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1

Effect of residual stress and surface roughness on the fatigue behaviour of aluminium matrix composites  

Science Journals Connector (OSTI)

In this investigation the fatigue properties of specimens manufactured with different turning parameters were investigated in stress-controlled constant amplitude tests at ambient temperature. The change of feed rate and depth of cut lead to a change in the near surface microstructure. Hence the fatigue properties were influenced significantly due to different surface roughness and surface residual stress resulting from the unequal turning processes. The cyclic deformation behaviour of AMC225xe is characterised by pronounced initial cyclic hardening. Continuous load increase tests allow a reliable estimation of the endurance limit of AMC225xe with one single specimen on the basis of cyclic deformation, temperature and electrical resistance data.

M Smaga; D Eifler

2010-01-01T23:59:59.000Z

2

Rough Diagrams Laurent Vigneron  

E-Print Network [OSTI]

that are not tautologies of modal logic S5. 1 Generalized Rough Sets The idea of rough set was proposed by Pawlak in 1982 [5]. The starting point of the rough set theory is the assumption that we have initially some informa have de#12;ned the notion of generalized rough sets: any topological space (X; I) with a clopen sets

Vigneron, Laurent

3

Rough Approximate Operators: Axiomatic Rough Set Theory  

Science Journals Connector (OSTI)

In rough set theory, the upper and lower approximations are ... are two abstract operators acting on the power set of U, the universe of discourse. ... The proof is an easy application of point set topology. Simi...

T. Y. Lin; Qing Liu

1994-01-01T23:59:59.000Z

4

Elementary Rough Set Granules: Toward a Rough Set Processor  

Science Journals Connector (OSTI)

In this chapter, the basics of the rough set approach are presented, and an outline of ... of a simple processor is based on elementary rough set granules and dependencies between them. The rough set processor (R...

Zdzis?aw Pawlak

2004-01-01T23:59:59.000Z

5

Rough Ride Test Procedure  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NTP005 NTP005 Revision 2 Effective December 1, 2004 Electric Vehicle Rough Road Course Test Prepared by Electric Transportation Applications Prepared by: _______________________________ Date:__________ Ryan Harkins Approved by: _________________________________________________ Date: _______________ Donald B. Karner ©2004 Electric Transportation Applications All Rights Reserved Procedure ETA-NTP005 Revision 2 2 TABLE OF CONTENTS 1.0 Objectives 3 2.0 Purpose 3 3.0 Documentation 3 4.0 Initial Conditions and Prerequisites 4 5.0 Testing Activity Requirements 6 6.0 Glossary 12 7.0 References 14 Appendices Appendix A - Electric Vehicle Rough Road Test Data Sheet 15

6

Improvement of Information Rough Communication on Rough Set  

Science Journals Connector (OSTI)

The concept of information rough communication based on knowledge base is proposed by Mousavi Amin, Jabedar-Maralani Parviz. In this paper, its limitation is discussed. The concept of information rough communi...

QinLi An

2011-01-01T23:59:59.000Z

7

On Generalized Rough Sets (extended abstract)  

E-Print Network [OSTI]

On Generalized Rough Sets (extended abstract) Anita Wasilewska Department of Computer Science State Rough Sets The idea of rough set was proposed by Pawlak in 1982 [10]. The starting point of the rough a rough set. The lower and upper approximations treated as one argument operations R and R in the ap

Vigneron, Laurent

8

COMBINATION OF ROUGH AND FUZZY SETS  

E-Print Network [OSTI]

1 COMBINATION OF ROUGH AND FUZZY SETS BASED ON -LEVEL SETS Y.Y. Yao Department of Computer Science set can be represented by a family of crisp sets using its -level sets, whereas a rough set can involved in the combination of rough-set and fuzzy-set models. The rough-fuzzy-set and fuzzy-rough-set

Yao, Yiyu

9

Plasma Radiation by Rough Surfaces  

Science Journals Connector (OSTI)

The recent observation of a peak of scattered radiation at the plasma frequency from thin metal foils irradiated with light can be explained in terms of a small amount of surface roughness of the foils.

Edward A. Stern

1967-12-04T23:59:59.000Z

10

Disk Roughness and Defect Monitoring  

Science Journals Connector (OSTI)

Disk surface monitoring and certification refer to the testing and certification of a disk surface in terms of roughness and defect ... as well as the capability to accommodate a flying slider. It includes glide ...

Gang Sheng; Jizhong He; Shuanlin Duan

2013-01-01T23:59:59.000Z

11

Design of Rough Neurons: Rough Set Foundation and Petri Net Model  

Science Journals Connector (OSTI)

This paper introduces the design of rough neurons based on rough sets. Rough neurons instantiate approximate reasoning in assessing knowledge ... to classifying inputs. The particular form of rough neuron conside...

J. F. Peters; A. Skowron; Z. Suraj; L. Han…

2010-01-01T23:59:59.000Z

12

Rough Set Approach to KDD (Extended Abstract)  

Science Journals Connector (OSTI)

This tutorial is a survey on rough set theory and some of its applications in ... to analysis of different real life problems using rough set methods as well as the presentation of Rough Set Exploration System (R...

Hung Son Nguyen; Andrzej Skowron

2008-01-01T23:59:59.000Z

13

Rough Sets in Economy and Finance  

Science Journals Connector (OSTI)

The Rough Set Theory makes it possible to represent and ... of the currently available literature covering applications of rough sets in the economy and finance. The classical rough set model and its important ex...

Mariusz Podsiad?o; Henryk Rybi?ski

2014-01-01T23:59:59.000Z

14

Rough sets determined by tolerances  

Science Journals Connector (OSTI)

Abstract We show that for any tolerance R on U, the ordered sets of lower and upper rough approximations determined by R form ortholattices. These ortholattices are completely distributive, thus forming atomistic Boolean lattices, if and only if R is induced by an irredundant covering of U, and in such a case, the atoms of these Boolean lattices are described. We prove that the ordered set RS of rough sets determined by a tolerance R on U is a complete lattice if and only if it is a complete subdirect product of the complete lattices of lower and upper rough approximations. We show that R is a tolerance induced by an irredundant covering of U if and only if RS is an algebraic completely distributive lattice, and in such a situation a quasi-Nelson algebra can be defined on RS. We present necessary and sufficient conditions which guarantee that for a tolerance R on U, the ordered set RS X is a lattice for all X ? U , where R X denotes the restriction of R to the set X and RS X is the corresponding set of rough sets. We introduce the disjoint representation and the formal concept representation of rough sets, and show that they are Dedekind–MacNeille completions of RS.

Jouni Järvinen; Sándor Radeleczki

2014-01-01T23:59:59.000Z

15

TOPOLOGICAL AND FUZZY ROUGH SETS Department of  

E-Print Network [OSTI]

TOPOLOGICAL AND FUZZY ROUGH SETS T. Y. Lin Department of Mathematics and Computer Science San Jose is studied via rough sets, fuzzy sets and topological spaces (more precisely, Frechet spaces). Rough set a knowledge base [1](pp. 14). Pawlak's rough set theory can be viewed as a study of concepts or knowledge via

Lin, Tsau Young

16

Trees, rough integration and differential equations  

E-Print Network [OSTI]

on the trajectory (x,y). mg (orsay) trees, rough paths, ... 3 / 27 #12;Trees L finite set. Trees labeled by L , TLTrees, rough integration and differential equations Massimiliano Gubinelli Laboratoire de Mathématiques Université Paris-Sud XI mg (orsay) trees, rough paths, ... 1 / 27 #12;Rough paths T. Lyons (Oxford

Gubinelli, Massimiliano

17

The Rough Set Engine GROBIAN Ivo Dntsch  

E-Print Network [OSTI]

The Rough Set Engine GROBIAN Ivo Düntsch School of Information and Software Engineering University semantische Informationsverarbeitung Universität Osnabrück Abstract Rough set analysis is a non rough set data analysis. In addition to the "traditional" procedures of rough set analysis

Düntsch, Ivo

18

residual magnetism  

Science Journals Connector (OSTI)

The magnetization, i.e., the magnetic polarization, that remains in a magnetized material after all attempts to remove the magnetization have been made. Note: An example of residual magnetization is the magnetiza...

2001-01-01T23:59:59.000Z

19

Rough Set Theory: An Introduction  

Science Journals Connector (OSTI)

In rough set theory, knowledge is interpreted as an ability...a, 81b]). These objects form a set called often a universe of discourse and their nature may vary from case to case: they may be e.g. medical patients...

Prof. Dr. Lech Polkowski

2002-01-01T23:59:59.000Z

20

Rough and fuzzy-rough methods for mammographic data Neil Mac Parthalain, Richard Jensen, Qiang Shen  

E-Print Network [OSTI]

in- vestigates the application of a number of rough set and fuzzy-rough set techniques to mammo for classification using rough sets, and fuzzy-rough sets and applied to this mammographic data, incorporating. In section 3, the fuzzy-rough set methodology and its application to both feature selection and the nearest

Lucas, Simon M.

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

A Rough Set Paradigm for Unifying Rough Set Theory and Fuzzy Set Theory  

Science Journals Connector (OSTI)

In this plenary address, we would like to discuss rough inclusions defined in Rough Mereology, a joint idea with A. ... , as a basis for common models for rough as well as fuzzy set theories. We would like to jus...

Lech Polkowski

2003-01-01T23:59:59.000Z

22

A New Treatment of Rough Surface Scattering  

Science Journals Connector (OSTI)

...1996 research-article A New Treatment of Rough Surface Scattering C. Macaskill P...narrow beam at a randomly rough surface where the height distribution...is Gaussian. The field at the surface is assumed to satisfy a Dirichlet...

1996-01-01T23:59:59.000Z

23

A Review of Rough Set Models  

Science Journals Connector (OSTI)

Since introduction of the theory of rough set in early eighties, considerable work has been ... The paper provides a review of the Pawlak rough set model and its extensions, with emphasis on ... the formulation, ...

Y. Y. Yao; S. K. M. Wong; T. Y. Lin

1997-01-01T23:59:59.000Z

24

A Rough Logic Formalism for Fuzzy Controllers  

E-Print Network [OSTI]

A Rough Logic Formalism for Fuzzy Controllers: A Hard and Soft Computing View T.Y. Lin Department are the design goal. Several new applications are identified. KEYWORDS: control, fuzzy logic, modal logic, rough process, called rough logic government, is proposed. In this process, fuzzy logic is viewed

Lin, Tsau Young

25

Electrokinetic transport in microchannels with random roughness  

SciTech Connect (OSTI)

We present a numerical framework to model the electrokinetic transport in microchannels with random roughness. The three-dimensional microstructure of the rough channel is generated by a random generation-growth method with three statistical parameters to control the number density, the total volume fraction, and the anisotropy characteristics of roughness elements. The governing equations for the electrokinetic transport are solved by a high-efficiency lattice Poisson?Boltzmann method in complex geometries. The effects from the geometric characteristics of roughness on the electrokinetic transport in microchannels are therefore modeled and analyzed. For a given total roughness volume fraction, a higher number density leads to a lower fluctuation because of the random factors. The electroosmotic flow rate increases with the roughness number density nearly logarithmically for a given volume fraction of roughness but decreases with the volume fraction for a given roughness number density. When both the volume fraction and the number density of roughness are given, the electroosmotic flow rate is enhanced by the increase of the characteristic length along the external electric field direction but is reduced by that in the direction across the channel. For a given microstructure of the rough microchannel, the electroosmotic flow rate decreases with the Debye length. It is found that the shape resistance of roughness is responsible for the flow rate reduction in the rough channel compared to the smooth channel even for very thin double layers, and hence plays an important role in microchannel electroosmotic flows.

Wang, Moran [Los Alamos National Laboratory; Kang, Qinjun [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

26

Rough Set Approximations in Formal Concept Analysis  

E-Print Network [OSTI]

Rough Set Approximations in Formal Concept Analysis Y.Y. Yao, Yaohua Chen Department of Computer}@cs.uregina.ca Abstract-- An important topic of rough set theory is the approximation of undefinable sets or concepts of approximation operators. In this paper, the notion of rough set approximations is introduced into formal concept

Yao, Yiyu

27

Vaguely Quantified Rough Sets Chris Cornelis1  

E-Print Network [OSTI]

Vaguely Quantified Rough Sets Chris Cornelis1 , Martine De Cock1 , and Anna Maria Radzikowska2 1@mini.pw.edu.pl Abstract. The hybridization of rough sets and fuzzy sets has focused on creating an end product they allow for gradual membership, fuzzy rough sets are still abrupt in a sense that adding or omitting

Gent, Universiteit

28

Intuitionistic fuzzy rough sets: at the cross-  

E-Print Network [OSTI]

U N C O R R EC TED PR O O F Intuitionistic fuzzy rough sets: at the cross- roads of imperfect: Just like rough set theory, fuzzy set theory addresses the topic of dealing with imperfect knowledge tentative definitions of the concept of an `intuitionistic fuzzy rough set' that were raised in their wake

Gent, Universiteit

29

A REVIEW OF ROUGH SET MODELS  

E-Print Network [OSTI]

1 A REVIEW OF ROUGH SET MODELS Y.Y. Yao*, S.K.M. Wong**, and T.Y. Lin*** * Department of Computer of rough set in early eighties, considerable work has been done on the development and application of this new theory. The paper provides a review of the Pawlak rough set model and its extensions

Lin, Tsau Young

30

Rough Sets and Matroids Victor W. Marek  

E-Print Network [OSTI]

Rough Sets and Matroids Victor W. Marek Department of Computer Science, University of Kentucky of that and related facts for the development of Rough Sets theory. 1 Introduction The goal of this note is to provide a proof of the recent statement by Liu and Zhu [2] and look at some properties of rough sets related

Marek, Victor W.

31

Rough Set Approximations in Formal Concept Analysis  

E-Print Network [OSTI]

Rough Set Approximations in Formal Concept Analysis Yiyu Yao and Yaohua Chen Department of Computer}@cs.uregina.ca Abstract. A basic notion shared by rough set analysis and formal concept anal- ysis is the definability to each other based on defin- ability. In this paper, the notion of rough set approximations is introduced

Yao, Yiyu

32

Wetting of rough surfaces: a homogenization approach  

Science Journals Connector (OSTI)

...plane xd = 0, and it is rough at a scale , where is...A (2005) Wetting of rough surfaces: a homogenization...where S1 is a closed set in Rd such that {xd 0...is finite, then L is a set with finite perimeter...A (2005) Wetting of rough surfaces: a homogenization...

2005-01-01T23:59:59.000Z

33

Ordered Weighted Average Based Fuzzy Rough Sets  

E-Print Network [OSTI]

Ordered Weighted Average Based Fuzzy Rough Sets Chris Cornelis 1 , Nele Verbiest1 , and Richard rough set model, which is based on a similar rationale, our proposal has the ad- vantage a feature selection application confirm the potential of the OWA-based model. Keywords: fuzzy rough sets

Gent, Universiteit

34

A logic for rough sets Ivo Dntsch  

E-Print Network [OSTI]

A logic for rough sets Ivo Düntsch School of Information and Software Engineering, University of a set forms a Boolean algebra under the usual set theoretic operations, while the collection of rough that regular double Stone algebras are a class of algebras appropriate for a logic of rough sets. Using

Düntsch, Ivo

35

ROUGH AND MODAL ALGEBRAS Laurent VIGNERON  

E-Print Network [OSTI]

automatically by the theorem prover. 1. INTRODUCTION The theory of rough sets provides a methodological frame, and market analysis. We present here two new connections for the rough set theory. We link]) relationship between the rough sets and modal S5 logic, and hence with some topological Boolean algebras

Vigneron, Laurent

36

Textures and covering based rough sets  

Science Journals Connector (OSTI)

This paper introduces the relations between covering and dicovering in the framework of rough sets. The natural counterpart of a covering in textures is given by a family of pairs of sets which is called a dicovering. This leads us to two dual concepts ... Keywords: Covering based approximation operators, Dicovering, Rough set, Textural rough set, Texture space

Murat Diker; Ay?egül Altay U?ur

2012-02-01T23:59:59.000Z

37

A New Multi-Gaussian Auto-Correlation Function for the Modeling of Realistic Shot Peened Random Rough Surfaces  

SciTech Connect (OSTI)

Shot peening is the primary surface treatment used to create a uniform, consistent, and reliable sub-surface compressive residual stress layer in aero engine components. A by-product of the shot peening process is random surface roughness that can affect the measurements of the resulting residual stresses and therefore impede their NDE assessment. High frequency eddy current conductivity measurements have the potential to assess these residual stresses in Ni-base super alloys. However, the effect of random surface roughness is expected to become significant in the desired measurement frequency range of 10 to 100 MHz. In this paper, a new Multi-Gaussian (MG) auto-correlation function is proposed for modeling the resulting pseudo-random rough profiles. Its use in the calculation of the Apparent Eddy Current Conductivity (AECC) loss due to surface roughness is demonstrated. The numerical results presented need to be validated with experimental measurements.

Hassan, W. [Honeywell Aerospace, 111 S. 34th Street, M/S 503-118 Phoenix, AZ 85034 (United States); Blodgett, M. [Air Force Research Laboratory (AFRL/MLLP), 2230 10th Street, Suite 1, Dayton, OH 45433 (United States)

2006-03-06T23:59:59.000Z

38

Dominance-Based Rough Set Approach and Bipolar Abstract Rough Approximation Spaces  

Science Journals Connector (OSTI)

We take into consideration Dominance-based Rough Set Approach and its recently proposed algebraic modeling...

Salvatore Greco; Benedetto Matarazzo…

2008-01-01T23:59:59.000Z

39

Attribute Selection Methods in Rough Set Theory.  

E-Print Network [OSTI]

?? Attribute selection for rough sets is an NP-hard problem, in which fast heuristic algorithms are needed to find reducts. In this project, two reduct… (more)

Li, Xiaohan

2014-01-01T23:59:59.000Z

40

Generalizing Rough Set Theory Through Dominance-Based Rough Set Approach  

Science Journals Connector (OSTI)

Ordinal properties of data related to preferences have been taken into account in the Dominance-based Rough Set Approach (DRSA). We show that DRSA ... a very general framework in which the classical rough set app...

Salvatore Greco; Benedetto Matarazzo…

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

The evolutionary development of roughness prediction models  

Science Journals Connector (OSTI)

The vigorous expansion of wind energy power generation over the last decade has also entailed innovative improvements to surface roughness prediction models applied to high-torque milling operations. Artificial neural networks are the most widely used ... Keywords: Dimensionality reduction, Genetic algorithm, High-torque milling, Surface roughness

Maciej Grzenda; Andres Bustillo

2013-05-01T23:59:59.000Z

42

Detonation limits in rough walled tubes  

Science Journals Connector (OSTI)

Abstract The present paper reports the results of a study of detonation limits in rough tubes. Detonation velocity is measured by photodiodes and ionization probes spaced at 10 cm intervals along the length of the tube. Short lengths of smoked foils inserted into the core of the rough tube is used to register the structure of the detonation wave. Pressure transducers are also used to obtain the pressure profile. The results indicate that in rough tubes, the detonation velocity is generally much lower than the corresponding values for smooth tubes. The velocity decreases slowly at first and then more rapidly as the limit is approached. The velocity variation is generally continuous and at the limits, the failure velocity is of the order of about 0.4 V CJ for all cases. The detonation limits in rough tubes are found to be wider than for a smooth tube. This indicates that the turbulence generated by the wall roughness facilitates the propagation of the detonation and extends the limits. Smoked foil records show that in the core of the rough tube the detonation front has a cellular structure corresponding to the usual cellular structure due to instability of the detonation. Thus the intrinsic unstable cellular structure is quite robust and retains its global characteristics in spite of the large perturbations generated by the rough wall. The detonation in the core of the rough tube goes from multi-headed to single headed as the limit is approached. Past the single headed spin, the low velocity detonation has no cellular structure but consists of interacting weak transverse waves from the rough wall. The averaged pressure of the low velocity detonation front corresponds to about the constant volume explosion pressure, in accord with the velocity of the low velocity detonation.

Amanda Starr; John H.S. Lee; Hoi Dick Ng

2014-01-01T23:59:59.000Z

43

TUNING ROUGH CONTROLLERS BY GENETIC ALGORITHMS Teresa Chiu  

E-Print Network [OSTI]

rough sets, rough logic, and evolutionary computing. Rough logic government starts with a symbolic model]. It is a variant of classical fuzzy controller that integrates rough sets, fuzzy logic, genetic algorithm) at the front, we add rough set methodology to extract linguistic rules from a set of ``training data,'' (2

Lin, Tsau Young

44

Rough Truth, Consequence, Consistency and Belief Revision  

Science Journals Connector (OSTI)

The article aims at re-visiting the notion of rough truth...proposed by Pawlak in 1987 [11] and investigating some of its ‘logical’ consequences. We focus on the formal deductive apparatus... ...

Mohua Banerjee

2004-01-01T23:59:59.000Z

45

Measuring the Surface Roughness of Stream Stones  

Science Journals Connector (OSTI)

Measuring the fine-scale heterogeneity of stones and other substrates is a challenge for benthic ecologists. I describe a method for measuring the roughness of stones that is based on the ratio of two surface ...

Elizabeth A. Bergey

2006-06-01T23:59:59.000Z

46

Rough surface reconstruction for ultrasonic NDE simulation  

SciTech Connect (OSTI)

The reflection of ultrasound from rough surfaces is an important topic for the NDE of safety-critical components, such as pressure-containing components in power stations. The specular reflection from a rough surface of a defect is normally lower than it would be from a flat surface, so it is typical to apply a safety factor in order that justification cases for inspection planning are conservative. The study of the statistics of the rough surfaces that might be expected in candidate defects according to materials and loading, and the reflections from them, can be useful to develop arguments for realistic safety factors. This paper presents a study of real rough crack surfaces that are representative of the potential defects in pressure-containing power plant. Two-dimensional (area) values of the height of the roughness have been measured and their statistics analysed. Then a means to reconstruct model cases with similar statistics, so as to enable the creation of multiple realistic realizations of the surfaces, has been investigated, using random field theory. Rough surfaces are reconstructed, based on a real surface, and results for these two-dimensional descriptions of the original surface have been compared with those from the conventional model based on a one-dimensional correlation coefficient function. In addition, ultrasonic reflections from them are simulated using a finite element method.

Choi, Wonjae; Shi, Fan; Lowe, Michael J. S. [UK Research Centre in NDE, Imperial College, London SW7 2AZ (United Kingdom); Skelton, Elizabeth A.; Craster, Richard V. [Department of Mathematics, Imperial College, London SW7 2AZ (United Kingdom)

2014-02-18T23:59:59.000Z

47

Perturbative Roughness Corrections to Electromagnetic Casimir Energies  

E-Print Network [OSTI]

Perturbative corrections to the Casimir free energy due to macroscopic roughness of dielectric interfaces are obtained in the framework of an effective low-energy field theory. It describes the interaction of electromagnetic fields with materials whose plasma frequency $\\omega_p$ determines the low-energy scale. The na\\"ive perturbative expansion of the single-interface scattering matrix in the variance of the profile is sensitive to short wavelength components of the roughness correlation function. We introduce generalized counter terms that subtract and correct these high-momentum contributions to the loop expansion. To leading order the counter terms are determined by the phenomenological plasmon model. The latter is found to be consistent with the low-energy description. The proximity force approximation is recovered in the limit of long correlation length and gives the upper limit for the roughness correction to the Casimir force. The renormalized low-energy theory is insensitive to the high-momentum behavior of the roughness correlation function. Predictions of the improved theory are compared with those of the unrenormalized model and with experiment. The Casimir interaction of interfaces with low levels of roughness is found to be well reproduced by that of flat parallel plates with the measured reflection coefficients at a distance that is slightly less than the mean separation of the rough surfaces.

Hua Yao Wu; Martin Schaden

2014-02-11T23:59:59.000Z

48

Speed Map for Autonomous Rovers over Rough Terrain  

E-Print Network [OSTI]

requires a training set to categorize rough terrain andis rough and what is not by driving over the training set.obstacles and rough. Within the crater data set, PTA detects

Loh, Jonathan Edau

2012-01-01T23:59:59.000Z

49

Computer Simulation of Uranyl Uptake by the Rough Lipopolysaccharide...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Computer Simulation of Uranyl Uptake by the Rough Lipopolysaccharide Membrane of Pseudomonas aeruginosa. Computer Simulation of Uranyl Uptake by the Rough Lipopolysaccharide...

50

Implementing algorithms of rough set theory and fuzzy rough set theory in the R package “RoughSets”  

Science Journals Connector (OSTI)

Abstract The package RoughSets, written mainly in the R language, provides implementations of methods from the rough set theory (RST) and fuzzy rough set theory (FRST) for data modeling and analysis. It considers not only fundamental concepts (e.g., indiscernibility relations, lower/upper approximations, etc.), but also their applications in many tasks: discretization, feature selection, instance selection, rule induction, and nearest neighbor-based classifiers. The package architecture and examples are presented in order to introduce it to researchers and practitioners. Researchers can build new models by defining custom functions as parameters, and practitioners are able to perform analysis and prediction of their data using available algorithms. Additionally, we provide a review and comparison of well-known software packages. Overall, our package should be considered as an alternative software library for analyzing data based on RST and FRST.

Lala Septem Riza; Andrzej Janusz; Christoph Bergmeir; Chris Cornelis; Francisco Herrera; Dominik ?le¸zak; José Manuel Benítez

2014-01-01T23:59:59.000Z

51

ROUGHNESS LENGTHS FOR THE SAVANNAH RIVER SITE  

SciTech Connect (OSTI)

Surface roughness values for the areas surrounding the H, D and N-Area meteorological towers were computed from archived 2010 meteorological data. These 15-minute-averaged data were measured with cup anemometers and bidirectional wind vanes (bivanes) 61 m above the surface. The results of the roughness calculation using the standard deviation of elevation angle {sigma}{sub E}, and applying the simple formula based on tree canopy height, gave consistent estimates for roughness around the H-Area tower in the range of 1.76 to 1.86 m (95% confidence interval) with a mean value of 1.81 m. Application of the {sigma}{sub E} method for the 61-m level at D and N-Areas gave mean values of 1.71 and 1.81 with confidence ranges of 1.62-1.81 and 1.73-1.88 meters, respectively. Roughness results are azimuth dependent, and thus are presented as averages over compass sectors spanning 22.5 degrees. Calculated values were compared to other methods of determining roughness, including the standard deviation of the azimuth direction, {sigma}{sub A}, and standard deviation of the wind speed, {sigma}{sub U}. Additional data was obtained from a sonic anemometer at 61-m on the H-Area tower during a period of a few weeks in 2010. Results from the sonic anemometer support our use of {sigma}{sub E} to calculate roughness. Based on the H-Area tower results, a surface roughness of 1.8 m using is recommended for use in dispersion modeling applications that consider the impacts of a contaminant release to individuals along the Site boundary. The canopy surrounding the H-Area tower is relatively uniform (i.e., little variance in roughness by upwind direction), and data supplied by the U.S. Forest Service at Savannah River show that the canopy height and composition surrounding the H-Area tower is reasonably representative of forested areas throughout the SRS reservation. For dispersion modeling analyses requiring assessments of a co-located worker within the respective operations area, recommended area-specific values range from 0.3 m for E Area to 0.7 m for A Area at the Savannah River National Laboratory. These area-specific values, summarized in Table 4-1, were determined using the Environmental Protection Agency's AERSURFACE computer algorithm.

Hunter, C.

2012-03-28T23:59:59.000Z

52

Probabilistic Rough Set Approximations Yiyu (Y.Y.) Yao  

E-Print Network [OSTI]

Probabilistic Rough Set Approximations Yiyu (Y.Y.) Yao Department of Computer Science University have been applied to the theory of rough set in sev- eral forms, including decision-theoretic analysis and rough inclusion functions, we revisit probabilistic rough set approximation operators and present

Yao, Yiyu

53

Web-based Support Systems with Rough Set Analysis  

E-Print Network [OSTI]

Web-based Support Systems with Rough Set Analysis JingTao Yao Joseph P. Herbert Department. The applications of rough set analysis for WSS is looked at in this article. In particular, our focus of the challenges of using rough sets in a WMSS and detail some of the applications of rough sets in analyzing

Yao, JingTao

54

Fuzzy-Rough Nearest Neighbour Classification Richard Jensen1  

E-Print Network [OSTI]

as with the recently intro- duced vaguely quantified rough sets. Preliminary results are very good, and in general FRNN] and rough sets [18] is representative of this. The success of rough set theory is due in part to three on a particular domain. Thirdly, it finds a minimal knowledge representation for data. As rough set theory handles

Gent, Universiteit

55

Fuzzy-Rough Instance Selection Richard Jensen and Chris Cornelis  

E-Print Network [OSTI]

Fuzzy-Rough Instance Selection Richard Jensen and Chris Cornelis Abstract-- Rough set theory. Recently, the value of fuzzy-rough sets for feature selection and rule induction has been established proposes three novel methods for instance selection based on fuzzy-rough sets. The initial experimentation

Gent, Universiteit

56

Rough operations on Boolean algebras Guilin Qi and Weiru Liu  

E-Print Network [OSTI]

; Rough operations; Uncertainty measures 1 Introduction Rough set theory was introduced by Pawlak [16] to generalize the classical set theory. In rough set theory, given an equivalence relation on a universe, we can is corresponding to the equivalence relation [11]. In [14,15], Yao generalized rough set theory by generalizing

Liu, Weiru

57

Decision-theoretic rough fuzzy set model and application  

Science Journals Connector (OSTI)

Abstract This article investigates the rough approximation of a fuzzy concept on a probabilistic approximation space. We propose the probabilistic rough fuzzy set by defining the conditional probability of a fuzzy event. Then we establish the model of probabilistic rough fuzzy set and discuss several properties in detail. Furthermore, three generalizations of probabilistic rough fuzzy set, namely, 0.5-probabilistic rough fuzzy set, variable precision probabilistic rough fuzzy set and Bayesian rough fuzzy set are reported. In order to give a systematic method of selecting parameters for the probabilistic rough fuzzy set, we propose a decision-theoretic rough fuzzy set. That is, we formulate a non-parametric definition of the probabilistic rough fuzzy set. Moreover, we illustrate the motivation and verify the validity of the decision-theoretic rough fuzzy set by using a credit card applicant decision-making problem. Furthermore, the interrelationship between the decision-theoretic rough fuzzy set and the probabilistic rough fuzzy set is explained. The main contribution of this paper is twofold. One is to extend the probabilistic rough set to fuzzy environment, i.e., the probabilistic rough fuzzy set model. Another is to present an approach to select parameters needed in probabilistic rough fuzzy set modeling by using the process of decision-making under conditions of risk.

Bingzhen Sun; Weimin Ma; Haiyan Zhao

2014-01-01T23:59:59.000Z

58

Naive Bayesian Rough Sets Yiyu Yao and Bing Zhou  

E-Print Network [OSTI]

Naive Bayesian Rough Sets Yiyu Yao and Bing Zhou Department of Computer Science, University assumptions, which is often used for ranking or constructing a binary classifier. The theory of rough sets decision-theoretic rough set model, or simply a naive Bayesian rough set (NBRS) model, to integrate

Yao, Yiyu

59

Parameterizing energy conversion on rough topography  

E-Print Network [OSTI]

Parameterizing energy conversion on rough topography using bottom pressure sensors to measure form and mixing U0 Form drag pressure Tidal energy conversion Form drag causes: - internal wave generation - eddy Sound, WA Point Three Tree Previous work McCabe et al., 2006 > Measured the internal form drag

Warner, Sally

60

Loan payment prediction using rough sets  

Science Journals Connector (OSTI)

In small business loans, there is always a risk for nonpayment or non-refunding of loans though very detailed examinations are made about the company. In this study, behaviors that increase the risk in loans or causing non-refunding are tried to be determined ... Keywords: classification, loan payment failure, prediction, rough sets

Bahadtin Ruzgar; Nursel Selver Ruzgar

2008-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Formal Concept Analysis Based on Rough Set Theory and a Construction Algorithm of Rough Concept Lattice  

Science Journals Connector (OSTI)

FCA(Formal Concept Analysis), which is accurate and complete in knowledge representation, is an effective tool for data analysis and knowledge discovery. A new lattice structure named RCL (Rough Concept Lattice) ...

Haifeng Yang

2011-01-01T23:59:59.000Z

62

Rough Mereological Reasoning in Rough Set Theory: Recent Results and Problems  

Science Journals Connector (OSTI)

This article comes up a couple of months after the death of Professor Zdzis?aw Pawlak who created in 1982 the theory of rough sets as a vehicle to carry out Concept...

Lech Polkowski

2006-01-01T23:59:59.000Z

63

Correlating toughness and roughness in ductile fracture  

E-Print Network [OSTI]

Three dimensional calculations of ductile crack growth under mode I plane strain, small scale yielding conditions are carried out using an elastic-viscoplastic constitutive relation for a progres- sively cavitating plastic solid with two populations of void nucleating second phase particles. Full field solutions are obtained for three dimensional material microstructures characterized by ran- dom distributions of void nucleating particles. Crack growth resistance curves and fracture surface roughness statistics are calculated using standard procedures. The range of void nucleating particle volume fractions considered give rise to values of toughness, JIC, that vary by a factor of four. For all volume fractions considered, the computed fracture surfaces are self-affine over a size range of about two orders of magnitude with a roughness exponent of 0.54 $\\pm$ 0.03. For small void nucleating particle volume fractions, the mean large particle spacing serves as a single dominant length scale. In this regime, the c...

Ponson, Laurent; Osovski, Shmulik; Bouchaud, Elisabeth; Tvergaard, Viggo; Needleman, Alan

2013-01-01T23:59:59.000Z

64

Smith-Purcell Radiation from Rough Surfaces  

E-Print Network [OSTI]

Radiation of a charged particle moving parallel to a inhomogeneous surface is considered. Within a single formalism periodic and random gratings are examined. For the periodically inhomogeneous surface we derive new expressions for the dispersion relation and the spectral-angular intensity. In particular, for a given observation direction two wavelengths are emitted instead of one wavelength of the standard Smith-Purcell effect. For a rough surface we show that the main contribution to the radiation intensity is given by surface polaritons induced on the interface between two media. These polaritons are multiply scattered on the roughness of surface and convert into real photons. The spectral-angular intensity is calculated and its dependence on different parameters is revealed.

Gevorkian, Zh S

2010-01-01T23:59:59.000Z

65

On multi-granulation covering rough sets  

Science Journals Connector (OSTI)

Abstract Recently, much attention has been given to multi-granulation rough sets (MGRS) and different kinds of multi-granulation rough set models have been developed from various viewpoints. In this paper, we propose four types of multi-granulation covering rough set (MGCRS) models under covering approximation space, where a target concept is approximated by employing the maximal or minimal descriptors of objects in a given universe of discourse U. And then, we investigate a number of basic properties of the four types of MGCRS models, and discuss the relationships and differences among the classical MGRS model and our MGCRS models. Moreover, the conditions for two distinct MGCRS models which produce identical lower and upper approximations of a target concept in a covering approximation space are also studied. Finally, the relationships among the four types of MGCRS models are explored. We find that for any subset X ? U , the lower approximations of X and the upper approximations of X under the four types of MGCRS models can construct a lattice, if we consider the binary relation of inclusion.

Caihui Liu; Duoqian Miao; Jin Qian

2014-01-01T23:59:59.000Z

66

Decision-theoretic Rough Sets and Beyond Zdzislaw Pawlak introduced rough sets 30 years ago as a theory for data analysis and  

E-Print Network [OSTI]

Decision-theoretic Rough Sets and Beyond Zdzislaw Pawlak introduced rough sets 30 years ago as a theory for data analysis and classification. Rough. Fundamental notions of rough sets are knowledge granulation induced by grouping objects

Yao, JingTao

67

Research on Rough Set Theory and Applications in China  

Science Journals Connector (OSTI)

This article gives a capsule view of research on rough set theory and applications ongoing at universities and ... China. Included in this capsule view of rough set research is a brief description of the followin...

Guoyin Wang; Qinghua Zhang; Houkuan Huang; Dongyi Ye…

2008-01-01T23:59:59.000Z

68

On the Climate Impact of Surface Roughness Anomalies  

Science Journals Connector (OSTI)

Large-scale deployment of wind power may alter climate through alteration of surface roughness. Previous research using GCMs has shown large-scale impacts of surface roughness perturbations but failed to elucidate the dynamic mechanisms that ...

Daniel B. Kirk-Davidoff; David W. Keith

2008-07-01T23:59:59.000Z

69

Diffuse scattering of hard x rays from rough surfaces  

Science Journals Connector (OSTI)

The diffuse scattering of hard x rays from rough solid surfaces has been measured and described quantitatively in terms of an improved distorted-wave Born approximation. The rough surface is characterized by the rms roughness ?, the height-height correlation length ?, and the roughness exponent h. The value for ? is in excellent agreement with that deduced from reflectivity. The significance of the parameters ?, ?, and h is tested by comparison with the results obtained from scanning force mircoscopy.

Wolfgang Weber and Bruno Lengeler

1992-09-15T23:59:59.000Z

70

Rough-Fuzzy MLP: Modular Evolution, Rule Generation, and Evaluation  

E-Print Network [OSTI]

they are integrated and evolved. Rough set dependency rules are generated directly from the real valued attribute Terms--Soft computing, knowledge-based fuzzy networks, rough sets, genetic algorithms, pattern efficient systems in soft computing paradigm. Recently, the theory of rough sets [2], [3] has emerged

Mitra, Sushmita

71

ROUGH EVOLUTION EQUATIONS MASSIMILIANO GUBINELLI AND SAMY TINDEL  

E-Print Network [OSTI]

with respect to [12], and set the basis of a real rough path expansion in order to define and solve equation (2ROUGH EVOLUTION EQUATIONS MASSIMILIANO GUBINELLI AND SAMY TINDEL Abstract. We show how to generalize Lyons' rough paths theory in order to give a pathwise meaning to some non-linear infinite

Tindel, Samy - Institut de Mathématiques �lie Cartan, Université Henri Poincaré

72

ROUGH SET APPROXIMATIONS: A CONCEPT ANALYSIS POINT OF VIEW  

E-Print Network [OSTI]

ROUGH SET APPROXIMATIONS: A CONCEPT ANALYSIS POINT OF VIEW Yiyu Yao University of Regina, Regina and content of data, definable concepts, lower and upper ap- proximations, rough set approximations Contents 1. Conclusion Bibliography Biographical Sketches Summary Rough set theory was proposed by Pawlak for analyzing

Yao, Yiyu

73

A study of the rough set for image understanding  

E-Print Network [OSTI]

A study of the rough set approach for image understanding by Peter Golibrzuch Supervisor: Prof. Dr . . . . . . . . . . . . . . . . . . . 8 2.4 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3 Rough Sets 15 3.1 Classical Set Theory and Rough Sets . . . . . . . . . . . . . . 15 3.2 Information Systems

74

Rough Set Approximations in Formal Concept Analysis and Knowledge Spaces  

E-Print Network [OSTI]

Rough Set Approximations in Formal Concept Analysis and Knowledge Spaces Feifei Xu1,2 , Yiyu Yao2 a generalized definition of rough set approximations, based on a subsystem of subsets of a universe. The sub set approximations. 1 Introduction Rough set theory [6, 7] is an extension of the set theory with two

Yao, Yiyu

75

Probabilistic Approaches to Rough Sets Department of Computer Science  

E-Print Network [OSTI]

Probabilistic Approaches to Rough Sets Y.Y. Yao Department of Computer Science University of Regina reviews probabilistic approaches to rough sets in gran- ulation, approximation, and rule induction and probabilistic rough set approximations are studied. The probabilistic approximations are defined in a decision

Yao, Yiyu

76

Rough Sets and Matroids Victor W. Marek1  

E-Print Network [OSTI]

Rough Sets and Matroids Victor W. Marek1 and Andrzej Skowron2 1 Department of Computer Science and Zhu [2] and discuss some consequences of that and related facts for the development of rough set theory. Key words: rough set, matroid 1 Introduction The goal of this note is to provide a proof

Marek, Victor W.

77

Relational Interpretations of Neighborhood Operators Rough Set Approximation Operators  

E-Print Network [OSTI]

Relational Interpretations of Neighborhood Operators and Rough Set Approximation Operators Y.Y. Yao and rough set approximations using the more familiar notion of binary relations. A special class of neigh sets, partitions, coverings. 1 INTRODUCTION The theory of rough sets is motivated by practical needs

Yao, Yiyu

78

Generalized Rough Set Models Department of Computer Science  

E-Print Network [OSTI]

Generalized Rough Set Models Y.Y. Yao Department of Computer Science Lakehead University Thunder the rough set theory in early eighties, many proposals have been made for generalizing and interpreting rough sets [3, 4, 19, 27, 37, 38, 39, 46, 47, 51, 52, 54, 55, 63, 65, 66, 67, 68, 69, 70, 71, 72, 83, 92

Yao, Yiyu

79

Scattering by infinite one-dimensional rough surfaces  

Science Journals Connector (OSTI)

...wave scattering by infinite rough surfaces and interfaces (see...but only if we assume that the rough surface approaches a flat boundary...plane-wave incidence), if our rough surface is periodic and the...we denote by BC(V ) the set of functions bounded and continuous...

1999-01-01T23:59:59.000Z

80

Attribute Reduction in Decision-Theoretic Rough Set Models  

E-Print Network [OSTI]

Attribute Reduction in Decision-Theoretic Rough Set Models Yiyu Yao, Yan Zhao Department of Computer Science, University of Regina, Regina, Saskatchewan, Canada S4S 0A2 Abstract Rough set theory can, and interpreted by, a decision-theoretic model, which is a probabilistic extension of the Pawlak rough set model

Yao, Yiyu

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Spinning rough disc moving in a rarefied medium  

Science Journals Connector (OSTI)

...body under consideration is a rough disc, that is, a set obtained from a circle by...Triangular cavity. The sets B m representing the rough disc B are regular m-gons...2009 bBilliard scattering on rough sets:two-dimensional caseSIAM...

2010-01-01T23:59:59.000Z

82

ROUGH VOLTERRA EQUATIONS 1: THE ALGEBRAIC INTEGRATION SETTING.  

E-Print Network [OSTI]

ROUGH VOLTERRA EQUATIONS 1: THE ALGEBRAIC INTEGRATION SETTING. AURÃ?LIEN DEYA AND SAMY TINDEL of the rough path theory called algebraic integration. In the Young case, that is for a driving signal with Volterra equations driven by rough paths. For an arbitrary positive constant T, this kind of equation can

Tindel, Samy - Institut de Mathématiques �lie Cartan, Université Henri Poincaré

83

ROUGH VOLTERRA EQUATIONS 1: THE ALGEBRAIC INTEGRATION SETTING  

E-Print Network [OSTI]

ROUGH VOLTERRA EQUATIONS 1: THE ALGEBRAIC INTEGRATION SETTING AUR´ELIEN DEYA AND SAMY TINDEL of the rough path theory called algebraic integration. In the Young case, that is for a driving signal with H equations driven by rough paths. For an arbitrary positive constant T, this kind of equation can be written

Paris-Sud XI, Université de

84

A New Approach to Fuzzy-Rough Nearest Neighbour Classification  

E-Print Network [OSTI]

-norm), as well as with the recently introduced vaguely quantified rough sets. Preliminary results are very good- gredients of rough set theory, i.e., lower and upper approximation. In this paper, therefore, we present, including the traditional implicator/t-norm based model [13], as well as the vaguely quantified rough set

Gent, Universiteit

85

Rough Set Approximation Framework for Smarter Vertical Handovers  

E-Print Network [OSTI]

2010 Rough Set Approximation Framework for Smarter Vertical Handovers Nalin ChakooO, Saewoong to support seamless mobility. In this paper, we propose rough set based decision framework for vertical handoff in heterogeneous networks. We apply fuzzy decision to fuzzy-rough set which gives us the advantage

Bahk, Saewoong

86

Learning Optimal Parameters in Decision-Theoretic Rough Sets  

E-Print Network [OSTI]

Learning Optimal Parameters in Decision-Theoretic Rough Sets Joseph P. Herbert JingTao Yao]@cs.uregina.ca Abstract. A game-theoretic approach for learning optimal parameter values for probabilistic rough set. The decision-theoretic rough set model acquires initial values for these parameters through a combination

Yao, JingTao

87

ROUGH VOLTERRA EQUATIONS 1: THE ALGEBRAIC INTEGRATION SETTING.  

E-Print Network [OSTI]

ROUGH VOLTERRA EQUATIONS 1: THE ALGEBRAIC INTEGRATION SETTING. AURÃ?LIEN DEYA AND SAMY TINDEL, the main dierence between classical dierential equations driven by rough signals and our Volterra setting of the rough path theory called algebraic integration. In the Young case, that is for a driving signal

Deya, Aurélien - Institut de Mathématiques �lie Cartan, Université Henri Poincaré

88

An Incremental, Probabilistic Rough Set Approach to Rule Discovery  

E-Print Network [OSTI]

1 An Incremental, Probabilistic Rough Set Approach to Rule Discovery Ning Zhong, Ju­Zhen Dong, Setsuo Ohsuga, Tsau Young Lin Abstract--- This paper introduces an incremental, proba­ bilistic rough set. The approach is based on the combination of Generaliza­ tion Distribution Table (GDT) and the rough set

Lin, Tsau Young

89

Fuzzy Rough Sets: from Theory into Practice Chris Cornelis1  

E-Print Network [OSTI]

Fuzzy Rough Sets: from Theory into Practice Chris Cornelis1 , Martine De Cock1 , Anna Maria 1, 00-661 Warsaw, Poland annrad@mini.pw.edu.pl Abstract Fuzzy sets and rough sets address two], 1965), as well as the slightly younger rough sets (Pawlak [23], 1982), have left an important mark

Gent, Universiteit

90

Bounds on the electrical resistance between contacting elastic rough bodies  

Science Journals Connector (OSTI)

...conductance for the rough contact problem...be restricted to a set of microscopic `actual...comprises an in nite set of highly clustered...of indentation of a rough surface. These bounds...Consequences for fractal rough surfaces The bounds...comprises an in nite set of point contacts...

2003-01-01T23:59:59.000Z

91

Generalization of Rough Sets Using Relationships Between Attribute Values  

E-Print Network [OSTI]

Generalization of Rough Sets Using Relationships Between Attribute Values Y.Y. Yao Department2 E-mail: wong@cs.uregina.ca abstract The notion of rough sets is generalized by using an arbitrary attribute values. The adoption of other types of relations enables us to define various classes of rough set

Yao, Yiyu

92

Using Rough Sets Theory to predict German Word Stress  

E-Print Network [OSTI]

Using Rough Sets Theory to predict German Word Stress Stefan Rapp Michael Jessen Grzegorz Dogil 14 Rough Set Theory [Paw82, Paw91] is a framework for reasonably deal­ ing with imprecise or uncertain data application of a Rough Set based machine learning algorithm is presented that can predict german word stress

Reyle, Uwe

93

Fuzzy Rough Positive Region based Nearest Neighbour Classification  

E-Print Network [OSTI]

, Wales, UK Email: rkj@aber.ac.uk Abstract--This paper proposes a classifier that uses fuzzy rough set fuzzy rough set theory to improve the FNN algorithm have some shortcomings and we overcome them by using vaguely quantified rough sets (VQRSs, [7]). In this paper, we show that FRNN only takes into account one

Gent, Universiteit

94

Multi-Adjoint Fuzzy Rough Sets Chris Cornelisa,1  

E-Print Network [OSTI]

Multi-Adjoint Fuzzy Rough Sets Chris Cornelisa,1 , Jes´us Medinab,2 , Nele Verbiesta a Department/t-norm based fuzzy rough set model based on a family of adjoint pairs. Rather than using a fixed implicator use in data reduction. 1. Introduction Fuzzy sets and rough sets model two complementary

Gent, Universiteit

95

Uncertainty measures of rough set prediction Ivo Dntsch  

E-Print Network [OSTI]

Uncertainty measures of rough set prediction Ivo Düntsch School of Information and Software in rough set data analysis, the approximation quality, is of limited value when there is a choice of competing models for predicting a decision variable. In keeping within the rough set philosophy of non

Düntsch, Ivo

96

Statistical Evaluation of Rough Set Dependency Analysis Ivo Dntsch1  

E-Print Network [OSTI]

Statistical Evaluation of Rough Set Dependency Analysis Ivo Düntsch1 School of Information authorship implied #12;Summary Rough set data analysis (RSDA) has recently become a frequently studied databases; it is, however, not clear from within the methods of rough set analysis, whether the extracted

Düntsch, Ivo

97

Rough Sets, Kernel Set, and Spatiotemporal Outlier Detection  

E-Print Network [OSTI]

Rough Sets, Kernel Set, and Spatiotemporal Outlier Detection Alessia Albanese, Member, IEEE, Sankar with the outlier detection problem in spatiotemporal data and describe a rough set approach that finds the top outliers in an unlabeled spatiotemporal data set. The proposed method, called Rough Outlier Set Extraction

Pal, Sankar Kumar

98

Case Generation Using Rough Sets with Fuzzy Representation  

E-Print Network [OSTI]

Case Generation Using Rough Sets with Fuzzy Representation Sankar K. Pal, Fellow, IEEE, and Pabitra a fuzzy granulation of the feature space. Rough set theory is used to obtain dependency rules which model-life data sets. Index Terms--Case-based reasoning, linguistic representation, rough dependency rules

Mitra, Pabitra

99

Theory of free surface flow over rough seeping beds  

Science Journals Connector (OSTI)

...horizontal bed is assumed to be rough consisting of sediment...the other hand, in the rough flow regime (Re *70...the introduction, the set of equations (3.2...turbulent flow over a rough planar sand bed. The...The flow conditions were set in such a way that sediment...

2007-01-01T23:59:59.000Z

100

Constructive and Algebraic Methods of the Theory of Rough Sets  

E-Print Network [OSTI]

Constructive and Algebraic Methods of the Theory of Rough Sets Y.Y. Yao Department of Computer@flash.lakeheadu.ca This paper reviews and compares constructive and algebraic approaches in the study of rough sets operators using the binary relation. Different classes of rough set algebras are obtained from different

Yao, Yiyu

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Surface roughness of anodized titanium coatings.  

SciTech Connect (OSTI)

Samples of grade five 6Al4V titanium alloy were coated with two commercial fluoropolymer anodizations (Tiodize and Canadize) and compared. Neither coating demonstrates significant outgassing. The coatings show very similar elemental analysis, except for the presence of lead in the Canadize coating, which may account for its lower surface friction in humid environments. Surface roughness has been compared by SEM, contact profilometry, optical profilometry, power spectral density and bidirectional scattering distribution function (BSDF). The Tiodize film is slightly smoother by all measurement methods, but the Canadize film shows slightly less scatter at all angles of incidence. Both films exhibited initial friction coefficients of 0.2 to 0.4, increasing to 0.4 to 0.8 after 1000 cycles of sliding due to wear of the coating and ball. The coatings are very similar and should behave identically in most applications.

Dugger, Michael Thomas; Chinn, Douglas Alan

2010-10-01T23:59:59.000Z

102

A minimal axiom group for rough set based on quasi-ordering  

Science Journals Connector (OSTI)

Rough set axiomatization is one aspect of rough set study to characterize rough set theory using dependable and minimal axiom groups. Thus, rough set theory can be studied by logic and axiom system methods. The c...

Jian-hua Dai; Wei-dong Chen; Yun-he Pan

2004-07-01T23:59:59.000Z

103

Improving the Scalability of Reduct Determination in Rough Sets.  

E-Print Network [OSTI]

??Rough Set Data Analysis (RSDA) is a non-invasive data analysis approach that solely relies on the data to find patterns and decision rules. Despite its… (more)

Mahmood, Shahid

2013-01-01T23:59:59.000Z

104

Algebraic approach to dependency of knowledge on rough set  

Science Journals Connector (OSTI)

The explosion of knowledge crops up embarrassing situations for the human beings to advance the research work in respect of comprehending uncertainty. A number of critical studies by the researchers had developed new theories and models in the past decades about roughness and fuzziness of the objects. Rough set and intuitionistic fuzzy set are some advancing theories which help the quest of dealing with vagueness and uncertainty. The present paper aims at drawing rough set and intuitionistic fuzzy sets together for establishing a new concept of rough intuitionistic fuzzy set in algebraic method where core and dependency of knowledge has been re-conceptualised for a boarder perspective.

Debadutta Mohanty

2012-01-01T23:59:59.000Z

105

Effects of Atomic Scale Roughness at Metal/insulator Interfaces...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Work Function. Effects of Atomic Scale Roughness at Metalinsulator Interfaces on Metal Work Function. Abstract: We evaluate the performance of different van der Waals (vdW)...

106

Materials - Recycling - Shredder Residue  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Recovering Materials from Shredder Residue Recovering Materials from Shredder Residue Obsolete automobiles, home appliances and other metal-containing scrap are shredded for the recovery of metals. More than 50% of the material shredded is automobiles. In the United States, shredders generate about 5 million tons of shredder residue every year. Similar amounts are produced in Europe and in the Pacific Rim. Because recycling shredder waste has not been profitable, most of it ends up in landfills; smaller amounts are incinerated. Argonne researchers have developed and tested a process to recover polymers and metals from shredder residue. A 2-ton/hr pilot plant, consisting of a mechanical separation facility and a six-stage wet density/froth flotation plant, was built at Argonne. In the mechanical part of the plant, the shredder waste was separated into five primary components: a polymer fraction (about 45% by weight), a residual metals concentrate (about 10% by weight), a polyurethane foam portion (about 5% by weight), an organic-rich fraction (about 25% by weight) and a metal oxides fraction (about 15% by weight). The polymer fraction was then separated further in the wet density/froth flotation system to recover individual plastic types or compatible families of polymers.

107

Rough surface mitigates electron and gas emission  

SciTech Connect (OSTI)

Heavy-ion beams impinging on surfaces near grazing incidence (to simulate the loss of halo ions) generate copious amounts of electrons and gas that can degrade the beam. We measured emission coefficients of {eta}{sub e} {le} 130 and {eta}{sub 0} {approx} 10{sup 4} respectively, with 1 MeV K{sup +} incident on stainless steel. Electron emission scales as {eta}{sub e} {proportional_to} 1/cos({theta}), where {theta} is the ion angle of incidence relative to normal. If we were to roughen a surface by blasting it with glass beads, then ions that were near grazing incidence (90{sup o}) on smooth surface would strike the rims of the micro-craters at angles closer to normal incidence. This should reduce the electron emission: the factor of 10 reduction, Fig. 1(a), implies an average angle of incidence of 62{sup o}. Gas desorption varies more slowly with {theta} (Fig. 1(b)) decreasing a factor of {approx}2, and along with the electron emission is independent of the angle of incidence on a rough surface. In a quadrupole magnet, electrons emitted by lost primary ions are trapped near the wall by the magnetic field, but grazing incidence ions can backscatter and strike the wall a second time at an azimuth where magnetic field lines intercept the beam. Then, electrons can exist throughout the beam (see the simulations of Cohen, HIF News 1-2/04). The SRIM (TRIM) Monte Carlo code predicts that 60-70% of 1 MeV K{sup +} ions backscatter when incident at 88-89{sup o} from normal on a smooth surface. The scattered ions are mostly within {approx}10{sup o} of the initial direction but a few scatter by up to 90{sup o}. Ion scattering decreases rapidly away from grazing incidence, Fig. 1(c ). At 62 deg. the predicted ion backscattering (from a rough surface) is 3%, down a factor of 20 from the peak, which should significantly reduce electrons in the beam from lost halo ions. These results are published in Phys. Rev. ST - Accelerators and Beams.

Molvik, A

2004-09-03T23:59:59.000Z

108

Counterintuitive MCNPX Results for Scintillator Surface Roughness Effect  

SciTech Connect (OSTI)

We have reported on our recent MCNPX simulation results of energy deposition for a group of 8 scintillation detectors, coupled with various rough surface patterns. The MCNPX results generally favored the detectors with various rough surface patterns. The observed MCNPX results are not fully explained by this work.

None

2012-08-12T23:59:59.000Z

109

Integrating rough set and genetic algorithm for negative rule extraction  

Science Journals Connector (OSTI)

Rule extraction is an important issue in data mining field. In this paper, we study the extraction problem for the complete negative rules of the form ¬R ? ¬D. By integrating rough set theory and genetic algorithm, we propose ... Keywords: genetic algorithm, negative rule, rough sets, rule extraction

Junyu Liu; Yubao Liu; Yan Long

2009-09-01T23:59:59.000Z

110

Discovering Concurrent Process Models in Data: A Rough Set Approach  

Science Journals Connector (OSTI)

The aim of the lecture is to provide a survey of state of the art related to a research direction concerning relationships between rough set theory and concurrency in the context of process mining in data. The main goal of this review is the general ... Keywords: Knowledge discovery, Petri nets, concurrent systems, data mining, process mining, rough sets

Zbigniew Suraj

2009-12-01T23:59:59.000Z

111

Measurement of normal contact stiffness of fractal rough surfaces  

E-Print Network [OSTI]

We investigate the effects of roughness and fractality on the normal contact stiffness of rough surfaces. Samples of isotropically roughened aluminium surfaces are considered. The roughness and fractal dimension were altered through blasting using different sized particles. Subsequently, surface mechanical attrition treatment (SMAT) was applied to the surfaces in order to modify the surface at the microscale. The surface topology was characterised by interferometry based profilometry. The normal contact stiffness was measured through nanoindentation with a flat tip utilising the partial unloading method. We focus on establishing the relationships between surface stiffness and roughness, combined with the effects of fractal dimension. The experimental results, for a wide range of surfaces, showed that the measured contact stiffness depended very closely on surfaces' root mean squared (RMS) slope and their fractal dimension, with correlation coefficients of around 90\\%, whilst a relatively weak correlation coefficient of 57\\% was found between the contact stiffness and RMS roughness.

Chongpu Zhai; Sébastien Bevand; Yixiang Gan; Dorian Hanaor; Gwénaëlle Proust; Bruno Guelorget; Delphine Retraint

2014-08-26T23:59:59.000Z

112

Transport Theory for Shallow Water Propagation with Rough Boundaries  

SciTech Connect (OSTI)

At frequencies of about 1 kHz and higher, forward scattering from a rough sea surface (and/or a rough bottom) can strongly affect shallow water propagation and reverberation. The need exists for a fast, yet accurate method for modeling such propagation where multiple forward scattering occurs. A transport theory method based on mode coupling is described that yields the first and second moments of the field. This approach shows promise for accurately treating multiple forward scattering in one-way propagation. The method is presently formulated in two space dimensions, and Monte-Carlo rough surface PE simulations are used for assessing the accuracy of transport theory results.

Thorsos, Eric I.; Henyey, Frank S.; Elam, W. T.; Hefner, Brian T.; Reynolds, Stephen A.; Yang Jie [Applied Physics Laboratory, University of Washington, 1013 NE 40th Street, Seattle, WA 98105 (United States)

2010-09-06T23:59:59.000Z

113

2012 IEEE International Conference on Granular Computing Generalized Infinitive Rough Sets Based on  

E-Print Network [OSTI]

2012 IEEE International Conference on Granular Computing Generalized Infinitive Rough Sets Based propose equivalent form of lower and upper approximations in binary relational rough set model in ways variable precision rough set model to variable precision binary relational rough set model. Index Terms-rough

Lin, Tsau Young

114

Dark spot formation relative to ITO surface roughness for polyfluorene  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Dark spot formation relative to ITO surface roughness for polyfluorene Dark spot formation relative to ITO surface roughness for polyfluorene devices Title Dark spot formation relative to ITO surface roughness for polyfluorene devices Publication Type Journal Article Year of Publication 2004 Authors Liu, Gao, John B. Kerr, and Stephen G. Johnson Journal Synthetic Metals Volume 144 Pagination 1-6 Keywords dark spot, failure mechanism, interface, ito surface, oled Abstract The failure behaviors of ITO/PEDOT;PSS/polyfluorene/Al devices are different depending on the surface roughness of the sputtered ITO anode film. The spikes on ITO surface are responsible for the initial local shorts of the device, which develop into dark spots very quickly. Indium adsorption is observed on the polymer and Al cathode interface. A chemical etching procedure is used to smoothen the ITO surface without changing the ITO thickness and the sheet resistance. Devices made out of smooth ITO show minimum changes at polymer-cathode interface during operation.

115

Hypersonic Measurements of Roughness-Induced Transient Growth  

E-Print Network [OSTI]

The effects of surface roughness on boundary-layer disturbance growth and laminar-to-turbulent transition are not well understood, especially in hypersonic boundary layers. The transient growth mechanism that produces algebraic growth of stream wise...

Sharp, Nicole Susanne

2014-04-17T23:59:59.000Z

116

Influence of surface roughness and waviness upon thermal contact resistance  

E-Print Network [OSTI]

This work deals with the phenomenon of thermal resistance between contacting solids. Attention is directed towards contiguous solids possessing both surface roughness and waviness. When two such surfaces are brought together ...

Yovanovich, M. Michael

1967-01-01T23:59:59.000Z

117

Ice friction: The effects of surface roughness, structure, and hydrophobicity  

SciTech Connect (OSTI)

The effect of surface roughness, structure, and hydrophobicity on ice friction is studied systematically over a wide range of temperature and sliding speeds using several metallic interfaces. Hydrophobicity in combination with controlled roughness at the nanoscale is achieved by femtosecond laser irradiation to mimic the lotus effect on the slider's surface. The controlled roughness significantly increases the coefficient of friction at low sliding speeds and temperatures well below the ice melting point. However, at temperatures close to the melting point and relatively higher speeds, roughness and hydrophobicity significantly decrease ice friction. This decrease in friction is mainly due to the suppression of capillary bridges in spite of the presence of surface asperities that facilitate their formation. Finally, grooves oriented in the sliding direction also significantly decrease friction in the low velocity range compared to scratches and grooves randomly distributed over a surface.

Kietzig, Anne-Marie; Hatzikiriakos, Savvas G.; Englezos, Peter [Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3 (Canada)

2009-07-15T23:59:59.000Z

118

Hardware Accelerator Design Based on Rough Set Philosophy  

Science Journals Connector (OSTI)

This paper presents a design of hardware accelerator for algorithms of rough set theory. A hardware implementation of incremental reduct ... becomes more visible when dealing with larger data sets.

K. S. Tiwari; A. G. Kothari…

2014-01-01T23:59:59.000Z

119

Discovering Concurrent Process Models in Data: A Rough Set Approach  

Science Journals Connector (OSTI)

The aim of the lecture is to provide a survey of state of the art related to a research direction concerning relationships between rough set theory and concurrency in the context of process mining in data. The...

Zbigniew Suraj

2009-01-01T23:59:59.000Z

120

PROPAGATION OF SINGULARITIES FOR ROUGH METRICS HART F. SMITH  

E-Print Network [OSTI]

PROPAGATION OF SINGULARITIES FOR ROUGH METRICS HART F. SMITH Abstract. We use a wave packet the Simons Foundation (# 266371 to Hart Smith). 1 #12;2 HART F. SMITH H¨ormander's theorem [9] on propagation

Smith, Hart F.

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Effect of Surface Roughness on Wind Turbine Performance  

E-Print Network [OSTI]

Wind farm operators observe production deficits as machines age. Quantifying deterioration on individual components is difficult, but one potential explanation is accumulation of blade surface roughness. Historically, wind turbine airfoils were...

Ehrmann, Robert Schaefer

2014-06-25T23:59:59.000Z

122

Effect of surface roughness and adsorbates on superlubricity  

E-Print Network [OSTI]

We study the sliding of elastic solids in adhesive contact with flat and rough interfaces. We consider the dependence of the sliding friction on the elastic modulus of the solids. For elastically hard solids with planar surfaces with incommensurate surface structures we observe extremely low friction (superlubricity), which very abruptly increases as the elastic modulus decreases. We show that even a relatively small surface roughness or a low concentration of adsorbates may completely kill the superlubricity state.

V. N. Samoilov; C. Yang; U. Tartaglino; B. N. J. Persson

2006-07-12T23:59:59.000Z

123

Dominance-Based Rough Set Approach as a Proper Way of Handling Graduality in Rough Set Theory  

Science Journals Connector (OSTI)

Referring to some ideas of Leibniz, Frege, Boole and ?ukasie-wicz, we represent fundamental concepts of rough set theory in terms of a generalization that ... permits to deal with the graduality of fuzzy sets. Ou...

Salvatore Greco; Benedetto Matarazzo; Roman S?owi?ski

2007-01-01T23:59:59.000Z

124

On Asymptotic Properties of Rough— Set— Theoretic Approximations. Fractal Dimension, Exact Sets, and Rough Inclusion in Potentially Infinite Information Systems  

Science Journals Connector (OSTI)

We look at asymptotic properties of rough set approximations exploiting them to three-fold purpose ... , to define the notion of an exact set in infinite information system to the result that so defined exact sets

Lech Polkowski

2002-01-01T23:59:59.000Z

125

Game-theoretic rough sets for recommender systems  

Science Journals Connector (OSTI)

Abstract Recommender systems guide their users in decisions related to personal tastes and choices. The rough set theory can be considered as a useful tool for predicting recommendations in recommender systems. We examine two properties of recommendations with rough sets. The first property refers to accuracy or appropriateness of recommendations and the second property highlights the generality or coverage of recommendations. Making highly accurate recommendations for majority of the users is a major hindrance in achieving high quality performance for recommender systems. In the probabilistic rough set models, these two properties are controlled by thresholds ( ? , ? ) . One of the research issues is to determine effective values of these thresholds based on the two considered properties. We apply the game-theoretic rough set (GTRS) model to obtain suitable values of these thresholds by implementing a game for determining a trade-off and balanced solution between accuracy and generality. Experimental results on movielen dataset suggest that the GTRS improves the two properties of recommendations leading to better overall performance compared to the Pawlak rough set model.

Nouman Azam; JingTao Yao

2014-01-01T23:59:59.000Z

126

An improved attribute reduction scheme with covering based rough sets  

Science Journals Connector (OSTI)

Abstract Attribute reduction is viewed as an important preprocessing step for pattern recognition and data mining. Most of researches are focused on attribute reduction by using rough sets. Recently, Tsang et al. discussed attribute reduction with covering rough sets in the paper (Tsang et al., 2008), where an approach based on discernibility matrix was presented to compute all attribute reducts. In this paper, we provide a new method for constructing simpler discernibility matrix with covering based rough sets, and improve some characterizations of attribute reduction provided by Tsang et al. It is proved that the improved discernibility matrix is equivalent to the old one, but the computational complexity of discernibility matrix is relatively reduced. Then we further study attribute reduction in decision tables based on a different strategy of identifying objects. Finally, the proposed reduction method is compared with some existing feature selection methods by numerical experiments and the experimental results show that the proposed reduction method is efficient and effective.

Changzhong Wang; Mingwen Shao; Baiqing Sun; Qinghua Hu

2015-01-01T23:59:59.000Z

127

Generalisation of rough set for rule induction in incomplete system  

Science Journals Connector (OSTI)

Rough set models based on the tolerance and similarity relations, have been widely used to deal with incomplete information systems. However, tolerance and similarity relations have their own limitations because the former is too loose while the latter is too strict in classification analysis. To make a reasonable and flexible classification in incomplete information system, a new binary relation is proposed in this paper. Such binary relation is only reflexive and it is a generalisation of tolerance and similarity relations. Furthermore, rough set models based on the above three different binary relations are compared. Finally, the direct approach to rules induction is investigated by using the proposed rough set, some illustrative examples are analysed to substantiate the conceptual arguments.

Xibei Yang; Xiaoning Song; Xiaohua Hu

2011-01-01T23:59:59.000Z

128

Inhomogeneous Cooling of the Rough Granular Gas in Two Dimensions  

E-Print Network [OSTI]

We study the inhomogeneous clustered regime of a freely cooling granular gas of rough particles in two dimensions using large-scale event driven simulations and scaling arguments. During collisions, rough particles dissipate energy in both the normal and tangential directions of collision. In the inhomogeneous regime, translational kinetic energy and the rotational energy decay with time $t$ as power-laws $t^{-\\theta_T}$ and $t^{-\\theta_R}$. We numerically determine $\\theta_T \\approx 1$ and $\\theta_R \\approx 1.6$, independent of the coefficients of restitution. The inhomogeneous regime of the granular gas has been argued to be describable by the ballistic aggregation problem, where particles coalesce on contact. Using scaling arguments, we predict $\\theta_T=1$ and $\\theta_R=1$ for ballistic aggregation, $\\theta_R$ being different from that obtained for the rough granular gas. Simulations of ballistic aggregation with rotational degrees of freedom are consistent with these exponents.

Sudhir N. Pathak; Dibyendu Das; R. Rajesh

2014-07-03T23:59:59.000Z

129

Rough and Ready Biomass Facility | Open Energy Information  

Open Energy Info (EERE)

and Ready Biomass Facility and Ready Biomass Facility Jump to: navigation, search Name Rough and Ready Biomass Facility Facility Rough and Ready Sector Biomass Owner Rough and Ready Lumber Co. Location Cave Junction, Oregon Coordinates 42.1628912°, -123.6481235° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.1628912,"lon":-123.6481235,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

130

Determination of interfacial roughness using X-ray scattering  

SciTech Connect (OSTI)

Crystal truncation rod (CTR) scattering is shown to be a powerful technique for determining interfacial roughness non-destructively. By measuring the decay of scattering away from a Bragg reflection in the surface direction an rms roughness of the surface or interface can be extracted. The authors obtain rms roughness values with an accuracy of {+-} 0.1 {angstrom}. Sensitivity to lateral length scale roughness ranges from the wavelength of the x-rays to between 1,000--10,000 {angstrom} depending on the instrument function and the specific truncation rod. The influence of different cleans, as well as the thermal oxidation process, on the Si-SiO{sub 2} interface is investigated. A hot water treatment prior to the thermal oxidation is shown to roughen the Si-SiO{sub 2} interface. CTR scattering results also show a smoothing of the interface as a result of the oxidation process even for as little as 60 {angstrom} of thermal oxidation. Comparison between AFM and CTR scattering gives a consistent picture of the relative roughness of the wafers, although the absolute numbers do not agree. The differences in the absolute values can be explained by the lateral roughness scale that the two techniques measure, indicating that it is at periodicities below {approx} 100 {angstrom} that the increased roughness observed by the x-ray is found. Crystal truncation rods are shown to be perpendicular to the surface and not along the crystallographic axes of a miscut crystal. It is shown that for a crystal terminated by a regular step array both an atomistic and a continuum description of CTR scattering give identical results. Furthermore, the atomistic approach is used to show that a diamond cubic surface with a miscut is inherently rough. Even for a small miscut the tilt of the CTR with respect to the crystallographic axes results in complications for measuring the rod intensity. The authors present schemes for determining the exact position of the CTR in reciprocal space and for measuring the miscut of a single crystal. These methods were applied to the measurement of CTR intensities of silicon(001) wafers with miscuts of 0.1 and 4 degrees.

Munkholm, A.

1997-05-01T23:59:59.000Z

131

Development of Sol–Gel Icephobic Coatings: Effect of Surface Roughness and Surface Energy  

Science Journals Connector (OSTI)

Development of Sol–Gel Icephobic Coatings: Effect of Surface Roughness and Surface Energy ... ‡ Energy

Qitao Fu; Xinghua Wu; Divya Kumar; Jeffrey W. C. Ho; Pushkar D. Kanhere; Narasimalu Srikanth; Erjia Liu; Peter Wilson; Zhong Chen

2014-11-10T23:59:59.000Z

132

Duality, Conjugacy and Adjointness of Approximation Operators in Covering Based Rough Sets  

E-Print Network [OSTI]

Duality, Conjugacy and Adjointness of Approximation Operators in Covering Based Rough Sets Mauricio approximation operators in covering-based rough sets. In this paper, we establish relationships between the most for the generalized rough set model based on a binary relation. Key words: rough sets, coverings, approximations

Granada, Universidad de

133

Effective boundary condition at a rough surface starting from a slip condition.  

E-Print Network [OSTI]

, set in a channel with a rough boundary, of small amplitude and wavelength . It was shown recently thatEffective boundary condition at a rough surface starting from a slip condition. Anne, for any non-degenerate roughness pattern, and for any reasonable condition imposed at the rough boundary

Gerard-Varet, David - Institut de Mathématiques de Jussieu, Université Paris 7

134

Granular computing, rough entropy and object extraction Sankar K. Pal a,1  

E-Print Network [OSTI]

of image object extraction in the framework of rough sets and granular computing is addressed. A mea- sure of rough entropy are described. Ã? 2005 Elsevier B.V. All rights reserved. Keywords: Rough sets; Entropy in the process of prob- lem solving. Recently, rough set theory (Pawlak, 1991) has become a popular mathematical

Mitra, Pabitra

135

Algebra and Geometry of Rough Logic Controllers T. Y. Lin 1 tylin@cs.susu.edu  

E-Print Network [OSTI]

for intelligent controls, is a mathematical formalism that integrates fuzzy logic, rough sets , evolutionary: control, fuzzy logic, evolutionary computing, modal logic, rough logic, rough set. 1 IntroductionAlgebra and Geometry of Rough Logic Controllers T. Y. Lin 1 tylin@cs.susu.edu Martin Wildberger 2

Lin, Tsau Young

136

On Generalizing Rough Set Theory Department of Computer Science, University of Regina  

E-Print Network [OSTI]

On Generalizing Rough Set Theory Y.Y. Yao Department of Computer Science, University of Regina formulations of the standard rough set theory. It demonstrates how those formulations can be adopted to develop different generalized rough set theories. The relationships be- tween rough set theory and other theories

Yao, Yiyu

137

Characterization of neighborhood operators for covering based rough sets, using duality and  

E-Print Network [OSTI]

Characterization of neighborhood operators for covering based rough sets, using duality@ugr.es Abstract Covering based Rough Sets are an important general- ization of Rough Set Theory. Basically for these approximation operators. Keywords: rough sets, coverings, approximations, neighborhood operator, order relation

Granada, Universidad de

138

Semantics of Fuzzy Sets in Rough Set Theory Department of Computer Science  

E-Print Network [OSTI]

Semantics of Fuzzy Sets in Rough Set Theory Y.Y. Yao Department of Computer Science University of rough sets. Rough membership func- tions are viewed as a special type of fuzzy membership functions and rough membership functions, between core and support of fuzzy set theory and lower and upper

Yao, Yiyu

139

Improved global bathymetry, global sea floor roughness, and deep ocean mixing  

E-Print Network [OSTI]

ocean and the increased mixing over rough topography by proposing that tidal dissipation was a power

Becker, Joseph Jeffrey

2008-01-01T23:59:59.000Z

140

Improved Global Bathymetry, Global Sea Floor Roughness, and Deep Ocean Mixing  

E-Print Network [OSTI]

ocean and the increased mixing over rough topography by proposing that tidal dissipation was a power

Becker, Joseph J

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Hanford Tank Waste Residuals  

Broader source: Energy.gov (indexed) [DOE]

Hanford Hanford Tank Waste Residuals DOE HLW Corporate Board November 6, 2008 Chris Kemp, DOE ORP Bill Hewitt, YAHSGS LLC Hanford Tanks & Tank Waste * Single-Shell Tanks (SSTs) - ~27 million gallons of waste* - 149 SSTs located in 12 SST Farms - Grouped into 7 Waste Management Areas (WMAs) for RCRA closure purposes: 200 West Area S/SX T TX/TY U 200 East Area A/AX B/BX/BY C * Double-Shell Tanks (DSTs) - ~26 million gallons of waste* - 28 DSTs located in 6 DST Farms (1 West/5 East) * 17 Misc Underground Storage Tanks (MUST) * 43 Inactive MUST (IMUST) 200 East Area A/AX B/BX/BY C * Volumes fluctuate as SST retrievals and 242-A Evaporator runs occur. Major Regulatory Drivers * Radioactive Tank Waste Materials - Atomic Energy Act - DOE M 435.1-1, Ch II, HLW - Other DOE Orders * Hazardous/Dangerous Tank Wastes - Hanford Federal Facility Agreement and Consent Order (TPA) - Retrieval/Closure under State's implementation

142

First Order Rough LogicRevisited T.Y. Lin 1;2 and Qing Liu 3  

E-Print Network [OSTI]

on axiomatic rough set theory, first order rough logic was developed earlier. In this paper, a new model theory and rough set theory. Rough set theory is based on a known equivalence relation (indis­ cernibility relation equivalence relation. How­ ever, to see clearly the relationships between rough logic and rough set theories

Lin, Tsau Young

143

Title: Aerodynamic and Scalar Roughness over Snow and Sea Ice In Monin-Obukhov similarity theory, the aerodynamic roughness, z0, is the artificial height  

E-Print Network [OSTI]

Title: Aerodynamic and Scalar Roughness over Snow and Sea Ice Abstract: In Monin-Obukhov similarity theory, the aerodynamic roughness, z0, is the artificial height above the surface at which the wind speed the theory and measurement of the aerodynamic and scalar roughness lengths over snow and sea ice. The data

144

Fluid squeeze-out between solids with rough surfaces  

E-Print Network [OSTI]

We study the fluid squeeze-out from the interface between an elastic solid with a flat surface and a rigid solid with a randomly rough surface. As an application we discuss fluid squeeze-out between a tire tread block and a road surface. Some implications for the leakage of seals are discussed, and experimental data are presented to test the theory.

B. Lorenz; B. N. J. Persson

2010-04-07T23:59:59.000Z

145

Multilayer roughness and image formation in the Schwarzschild objective  

SciTech Connect (OSTI)

We present a study of the effect of multilayer-surface-roughness-induced scattering in the image formation of the Schwarzschild objective (SO) used in the spectromicroscope MAXIMUM. The two mirrors comprising the SO are coated with Ru/B{sub 4}C multilayers that have a peak reflectivity at 130 eV. We had long observed that a diffuse x-ray background surrounds the focused x-ray spot. The spatial resolution remains at 0.1 {mu}m in spite of this. However, since a significant fraction of the flux is lost to the background, since too large an area of the sample is illuminated, and since the S/N ratio is degraded, the origins of this effect merit investigation. This diffuse background resulting from x-ray scattering at the surface of the mirrors was mapped out using bidirectional knife edge scans. Complementary surface roughness simulations were carried out with the ray-tracing program SHADOW. AFM experiments were also done to directly measure the surface roughness and power spectrum of representative multilayers. Following curve fitting, it was possible to classify Gaussian components in both the measured and simulated profiles as arising from scattering occurring at either the convex primary mirror or the concave secondary mirror. Together with geometrical analysis, these techniques permitted us to track the image formation process of an actual optical system in the presence of surface roughness. {copyright} {ital 1996 American Institute of Physics.}

Singh, S.; Solak, H.; Cerrina, F. [University of Wisconsin, 3731 Schneider Drive, Stoughton, WI 53589 (United States)] [University of Wisconsin, 3731 Schneider Drive, Stoughton, WI 53589 (United States)

1996-09-01T23:59:59.000Z

146

Neutron scattering by rough surfaces at grazing incidence  

Science Journals Connector (OSTI)

There are a number of calculations in the literature of the effect of statistical surface roughness on the specular and diffuse scattering of neutrons and x rays which impinge on surfaces at grazing incidence. These calculations do not agree with one another and in some cases lack internal consistency. In this paper I show that these discrepancies can be resolved within the distorted-wave Born approximation. The result I obtain for the specular reflectivity is the widely used version of Nevot and Croce, while that for the diffuse scattering is the same as a recent calculation by Sinha, Sirota, Garoff, and Stanley. The approximations made by Nevot and Croce are clearly revealed by the distorted-wave Born approximation. A simple numerical algorithm is proposed for the calculation of diffuse scattering from a surface whose roughness is self-affine, and the form of the scattering is calculated for a range of parameters within this model. The calculation of diffusion scattering is extended in this paper to the case of films with rough surfaces. Correlation between roughness at the two film surfaces is considered and shown to be important for the description of neutron reflectivity data obtained with a thin film of titanium deposited on a sapphire substrate.

Roger Pynn

1992-01-01T23:59:59.000Z

147

Reduce redundant broadcasting in MANETs using rough sets  

Science Journals Connector (OSTI)

A Mobile Ad-Hoc Network (MANET) consists of wireless hosts which may move often. The movement of hosts results in frequent changes in paths. In these cases, finding a path from source to destination becomes difficult. The well-known Ad-hoc On-Demand Distance Vector Routing (AODV) and Dynamic Source Routing (DSR) are routing protocols which are in vogue to determine a route when no route exists or a route breaks. As such to establish a new path from source to destination, it broadcasts control packets (route request packets), which increase the network bandwidth consumption. As MANETs have limited bandwidth, it is essential to reduce the control packets. We propose mathematical models which use the concept of rough set and Weighted Rough Set (WRS) to minimise the route request packets in the existing AODV and DSR routing protocols. Rough set theory is a mathematical tool to deal with vagueness, uncertainty; and WRS theory is an extension to rough set theory which also considers the importance of the objects.

A. Nagaraju; S. Ramachandram

2014-01-01T23:59:59.000Z

148

Graph and matrix approaches to rough sets through matroids  

Science Journals Connector (OSTI)

Abstract Rough sets are efficient for attribute reduction and rule extraction in data mining. However, many important problems including attribute reduction in rough sets are NP-hard, therefore the algorithms to solve them are often greedy. Matroids, generalized from linear independence in vector spaces, provide well-established platforms for greedy algorithm design. In this paper, we use graph and matrix approaches to study rough sets through matroids. First, we construct an isomorphism from equivalence relations to 2-circuit matroids, and then propose graph representations of lower and upper approximations through the graphic matroid. We also study graph representations of lower and upper approximations by that of the dual of the matroid. Second, in light of the fact that the relational matrix is a representable matrix of the matroid induced by an equivalence relation, matrix representations of lower and upper approximations are obtained with the representable matrix of the matroid. In a word, borrowing from matroids, this work presents two interesting views, graph and matrix ones, to investigate rough sets.

Shiping Wang; Qingxin Zhu; William Zhu; Fan Min

2014-01-01T23:59:59.000Z

149

Stereo-Vision-Based Obstacle Avoidance in Rough Outdoor Terrain  

E-Print Network [OSTI]

on chemical or nuclear plants are only a few possible scenarios. Unmanned vehicles could patrol frontiers and powerful robot navigation system for rough and vegetated outdoor terrain. Vegetation in that context of natural disasters, large-scale accidents and terrorism. Fire infernos, hurricanes, air crashes and attacks

Berns, Karsten

150

Mask roughness induced LER: geometric model at long correlation lengths  

SciTech Connect (OSTI)

Collective understanding of how both the resist and line-edge roughness (LER) on the mask affect the final printed LER has made significant advances. What is poorly understood, however, is the extent to which mask surface roughness couples to image plane LER as a function of illumination conditions, NA, and defocus. Recently, progress has been made in formulating a simplified solution for mask roughness induced LER. Here, we investigate the LER behavior at long correlation lengths of surface roughness on the mask. We find that for correlation lengths greater than 3/NA in wafer dimensions and CDs greater than approximately 0.75/NA, the previously described simplified model, which remains based on physical optics, converges to a 'geometric regime' which is based on ray optics and is independent of partial coherence. In this 'geometric regime', the LER is proportional to the mask slope error as it propagates through focus, and provides a faster alternative to calculating LER in contrast to either full 2D aerial image simulation modeling or the newly proposed physical optics model. Data is presented for both an NA = 0.32 and an NA = 0.5 imaging system for CDs of 22-nm and 50-nm horizontal-line-dense structures.

McClinton, Brittany M.; Naulleau, Patrick P.

2011-02-11T23:59:59.000Z

151

Multilayer roughness and image formation in the Schwarzschild objective  

Science Journals Connector (OSTI)

We present a study of the effect of multilayer?surface?roughness?induced scattering in the image formation of the Schwarzschild objective (SO) used in the spectromicroscope MAXIMUM. The two mirrors comprising the SO are coated with Ru/B4C multilayers that have a peak reflectivity at 130 eV. We had long observed that a diffuse x?ray background surrounds the focused x?ray spot. The spatial resolution remains at 0.1 ?m in spite of this. However since a significant fraction of the flux is lost to the background since too large an area of the sample is illuminated and since the S/N ratio is degraded the origins of this effect merit investigation. This diffuse background resulting from x?ray scattering at the surface of the mirrors was mapped out using bidirectional knife edge scans. Complementary surface roughness simulations were carried out with the ray?tracing program SHADOW. AFM experiments were also done to directly measure the surface roughness and power spectrum of representative multilayers. Following curve fitting it was possible to classify Gaussian components in both the measured and simulated profiles as arising from scattering occurring at either the convex primary mirror or the concave secondary mirror. Together with geometrical analysis these techniques permitted us to track the image formation process of an actual optical system in the presence of surface roughness.

S. Singh; H. Solak; F. Cerrina

1996-01-01T23:59:59.000Z

152

Studies of the 3D surface roughness height  

SciTech Connect (OSTI)

Nowadays nano-coatings occupy more and more significant place in technology. Innovative, functional coatings acquire new aspects from the point of view of modern technologies, considering the aggregate of physical properties that can be achieved manipulating in the production process with the properties of coatings’ surfaces on micro- and nano-level. Nano-coatings are applied on machine parts, friction surfaces, contacting parts, corrosion surfaces, transparent conducting films (TCF), etc. The equipment available at present for the production of transparent conducting oxide (TCO) coatings with highest quality is based on expensive indium tin oxide (ITO) material; therefore cheaper alternatives are being searched for. One such offered alternative is zink oxide (ZnO) nano-coatings. Evaluating the TCF physical and mechanical properties and in view of the new ISO standard (EN ISO 25178) on the introduction of surface texture (3D surface roughness) in the engineering calculations, it is necessary to examine the height of 3D surface roughness, which is one of the most significant roughness parameters. The given paper studies the average values of 3D surface roughness height and the most often applied distribution laws are as follows: the normal distribution and Rayleigh distribution. The 3D surface is simulated by a normal random field.

Avisane, Anita; Rudzitis, Janis; Kumermanis, Maris [Institute of Mechanical Engineering, Riga Technical University, Ezermalas str. 6k, Riga (Latvia)

2013-12-16T23:59:59.000Z

153

On the union and intersection operations of rough sets based on various approximation spaces  

Science Journals Connector (OSTI)

Abstract Algebraic structures and lattice structures of rough sets are basic and important topics in rough sets theory. In this paper we pointed out that a basic problem had been overlooked, that is the closeness of union and intersection operations of rough approximation pairs, i.e. (lower approximation, upper approximation). We present that the union and intersection operations of rough approximation pairs are closed for classical rough sets and two kinds of covering based rough sets, but not for twenty kinds of covering based rough sets and the generalized rough sets based on fuzzy approximation space. Moreover, we proved that the union and intersection operations of rough fuzzy approximation pairs are closed and a bounded distributive lattice can be constructed.

Xiaohong Zhang; Jianhua Dai; Yucai Yu

2015-01-01T23:59:59.000Z

154

Impact of Ice Crystal Roughness on Satellite Retrieved Cloud Properties  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ice Crystal Roughness on Satellite Retrieved Cloud Properties Ice Crystal Roughness on Satellite Retrieved Cloud Properties P. Minnis 1 , P. W. Heck 2 , R. F. Arduini 3 , R. Palikonda 3 , J. K. Ayers 3 , M. M. Khaiyer 3 , P. Yang 4 , Y. Xie 4 3 Science Systems & Applications, Inc. Hampton, VA 1 NASA Langley Research Center Hampton, VA Current Cirrus Models Inadequate Cirrus cloud optical depths Ï„ (heights z e ) are often over (under) estimated when derived from solar reflectances. In situ data suggest smaller asymmetry factors, g, than used in most retrieval models. Multi-angle measurements point to smoother phase functions than for solid, smooth xtals. Calculations show that solid crystals with roughened facets or embedded bubbles --both observed in real cirrus particles-- yield smoother phase functions & smaller g

155

A modified electrospark alloying method for low surface roughness  

Science Journals Connector (OSTI)

A modified electrospark alloying method has been developed. The method allows the formation of deposits with low surface roughness compared to that of the conventional electrospark alloying method. It is based on the employment of a sequence of identical pulse groups. The process of electrospark deposition and the process of electrospark grinding were combined by forming pulse groups consisting of a high energy pulse for mass transfer from treating electrode to substrate and low energy pulses for grinding during deposition. Low as-deposited surface roughness was succeeded by properly selecting parameters of the pulses in a group and pauses between them. Experimental results revealed that the proposed method is useful in forming one–two layers of deposition.

Alexander V. Ribalko; Orhan Sahin; Kemal Korkmaz

2009-01-01T23:59:59.000Z

156

Investigating memetic algorithm in solving rough set attribute reduction  

Science Journals Connector (OSTI)

Attribute reduction is the problem of selecting a minimal subset from the original set of attributes. Rough set theory has been used for attribute reduction with much success. Since it is well known that finding a minimal subset is a NP-hard problem; therefore, it is necessary to develop efficient algorithms to solve this problem. In this work, we propose a memetic algorithm-based approach inside the rough set theory which is a hybridisation of genetic algorithm and simulated annealing. The proposed method has been tested on UCI data sets. Experimental results demonstrate the effectiveness of this memetic approach when compared with previous available methods. Possible extensions upon this simple approach are also discussed.

Majdi Mafarja; Salwani Abdullah

2013-01-01T23:59:59.000Z

157

Essential Substrate Residues for Action of Endopeptidases  

Science Journals Connector (OSTI)

Endopeptidases, which are influenced in their specificity primarily by basic residues of arginine or lysine are treated in seven sections, according to the position of the essential residue: ...

Prof. Dr. Borivoj Keil

1992-01-01T23:59:59.000Z

158

Distributed Roughness Receptivity in a Flat Plate Boundary Layer  

E-Print Network [OSTI]

- Distributed Receptivity . . . . . 6 2. FACILITY DESCRIPTION - THE KLEBANOFF–SARIC WIND TUNNEL 11 2.1 Test Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2 Fan and Motor... of this dissertation describes the Klebanoff–Saric Wind Tunnel facility, which was used for this experiment. Section 3 describes the experimental setup (roughness design and the flat plate model) and defines the metrics by which the flow field is decomposed...

Kuester, Matthew Scott

2014-04-18T23:59:59.000Z

159

Capillary adhesion between elastic solids with randomly rough surfaces  

E-Print Network [OSTI]

I study how the contact area and the work of adhesion, between two elastic solids with randomly rough surfaces, depend on the relative humidity. The surfaces are assumed to be hydrophilic, and capillary bridges form at the interface between the solids. For elastically hard solids with relative smooth surfaces, the area of real contact and therefore also the sliding friction, are maximal when there is just enough liquid to fill out the interfacial space between the solids, which typically occurs for $d_{\\rm K} \\approx 3 h_{\\rm rms}$, where $d_{\\rm K}$ is the height of the capillary bridge and $h_{\\rm rms}$ the root-mean-square roughness of the (combined) surface roughness profile. For elastically soft solids, the area of real contact is maximal for very low humidity (i.e., small $d_{\\rm K}$), where the capillary bridges are able to pull the solids into nearly complete contact. In both case, the work of adhesion is maximal (and equal to $2\\gamma {\\rm cos}\\theta$, where $\\gamma$ is the liquid surface tension and $\\theta$ the liquid-solid contact angle) when $d_{\\rm K} >> h_{\\rm rms}$, corresponding to high relative humidity.

B. N. J. Persson

2008-05-06T23:59:59.000Z

160

Rough-fuzzy Classifier Modeling Using Data Repository Sets  

Science Journals Connector (OSTI)

Abstract This paper reflects the trends of the past years based on the diffusion of various traditional approaches and methods when tackling new problems. Two components of the computational intelligence (CI) are applied, rough and fuzzy sets theory. These components permit one to operate with uncertainty data. The current knowledge in the investigated field is summarized and briefly explained. It also deals with uncertainty in an information system and the two approaches, the fuzzy sets (FSs) and rough sets theory (RST), for operating it. The proposal and implementation of a rough-fuzzy classifier (RFC) is modified. RFC uses the rules generated by RSTbox. The databases IRIS and WINE were chosen for verification. The classification results were compared with the results of other classification methods are applied on these databases. Finally, we summarized the presented problems. Based on the above stated facts it can be claimed that the proposed modified algorithm, \\{RSTbox\\} and RFC model are functional. The model is relatively successful (compared to other approaches), and by using it two classification databases can be carried out. This model is proposed in MATLAB.

Jiri Krupka; Pavel Jirava

2014-01-01T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Interpretation of equilibria in game-theoretic rough sets  

Science Journals Connector (OSTI)

Abstract Intelligent decision making models aim at improving the quality of decision making under uncertainty. The fundamental issues that are generally encountered in these models are too many options to choose from and the involvement of contradictory decision making criteria. The game-theoretic rough set (GTRS) model provides an intelligent decision making mechanism that exploits a game-theoretic environment for analyzing strategic situations between cooperative or conflicting decision making criteria in the probabilistic rough set framework. The concept of equilibria is of central importance in the GTRS model which has not been sufficiently addressed in the current literature. Two key issues in this regard are the interpretation of equilibria and the establishment of their existence. By reviewing, examining and defining the basic game constructs in the GTRS model, we are able to interpret an equilibrium in terms of the decision thresholds that control the rough sets based decision regions. In particular, an equilibrium is defined in terms of a pair of thresholds such that no player has a unilateral incentive to change these thresholds within the game. An example game is considered to demonstrate the use of the interpretation in determining the thresholds. The issue of existence of equilibria is addressed by considering a couple of typical two-player games in the GTRS model. The results suggest that the existence of equilibria may be established under certain limited conditions.

Nouman Azam; JingTao Yao

2015-01-01T23:59:59.000Z

162

Dimensional variation and roughness of LIGA fabricated microstructures  

SciTech Connect (OSTI)

We have measured the dimensional variation and sidewall roughness of features on PMMA micro- components fabricated by deep x-ray lithography in order to assess the effect of dimensional variation on subsequent assembly operations. Dimensional measurements were made using a stylus profilometer with a repeatability in step height of better than 0.01 {mu}m. Roughness measurements were made with the same profilometer scanning in a direction perpendicular to the length of the parts. 22 {mu}m and 54 {mu}m features exhibited dimensional variations described by a Gaussian distribution with standard deviations of 0.202 {mu}m and 0.381 {mu}m, respectively. This corresponds to a maximum relative variation of between 0.6% and 0.9%. Sidewall roughnesses were found to be in the range of 0.02 {mu}m to 0. 03 {mu}m, an insignificant contribution to the total variation when compared to overall dimensional variation. Several potential sources of this variation are discussed, but no single cause was identified as the source of the significant dimensional variation observed here.

Egert, C.M. [Oak Ridge National Lab., TN (United States); Wood, R. [Microelectronics Center of North Carolina, Research Triangle Park, NC (United States); Malek, C.K. [Louisiana State Univ., Baton Rouge, LA (United States)

1996-10-01T23:59:59.000Z

163

DISSOLUTION OF NEPTUNIUM OXIDE RESIDUES  

SciTech Connect (OSTI)

This report describes the development of a dissolution flowsheet for neptunium (Np) oxide (NpO{sub 2}) residues (i.e., various NpO{sub 2} sources, HB-Line glovebox sweepings, and Savannah River National Laboratory (SRNL) thermogravimetric analysis samples). Samples of each type of materials proposed for processing were dissolved in a closed laboratory apparatus and the rate and total quantity of off-gas were measured. Samples of the off-gas were also analyzed. The quantity and type of solids remaining (when visible) were determined after post-dissolution filtration of the solution. Recommended conditions for dissolution of the NpO{sub 2} residues are: Solution Matrix and Loading: {approx}50 g Np/L (750 g Np in 15 L of dissolver solution), using 8 M nitric acid (HNO{sub 3}), 0.025 M potassium fluoride (KF) at greater than 100 C for at least 3 hours. Off-gas: Analysis of the off-gas indicated nitric oxide (NO), nitrogen dioxide (NO{sub 2}) and nitrous oxide (N{sub 2}O) as the only identified components. No hydrogen (H{sub 2}) was detected. The molar ratio of off-gas produced per mole of Np dissolved ranged from 0.25 to 0.4 moles of gas per mole of Np dissolved. A peak off-gas rate of {approx}0.1 scfm/kg bulk oxide was observed. Residual Solids: Pure NpO{sub 2} dissolved with little or no residue with the proposed flowsheet but the NpCo and both sweepings samples left visible solid residue after dissolution. For the NpCo and Part II Sweepings samples the residue amounted to {approx}1% of the initial material, but for the Part I Sweepings sample, the residue amounted to {approx}8 % of the initial material. These residues contained primarily aluminum (Al) and silicon (Si) compounds that did not completely dissolve under the flowsheet conditions. The residues from both sweepings samples contained minor amounts of plutonium (Pu) particles. Overall, the undissolved Np and Pu particles in the residues were a very small fraction of the total solids.

Kyser, E

2009-01-12T23:59:59.000Z

164

Rough Fuzzy Set Model for Set-Valued Ordered Fuzzy Decision System  

Science Journals Connector (OSTI)

The classical rough set theory can not be directly used to reduce knowledge in set-valued ordered fuzzy decision system. Firstly, we propose a dominance relation-based rough fuzzy set model in set-valued ordered ...

Zhongkui Bao; Shanlin Yang; Ju Zhao

2014-01-01T23:59:59.000Z

165

Data Mining in Uniform Hospital Discharge Data Set Using Rough Set Model  

Science Journals Connector (OSTI)

Purpose: The purpose of this study were to apply rough set model to nursing knowledge discovery process. Method: Data mining based on rough set model was conducted on a large clinical data set containing Nursing ...

M. Park

2013-01-01T23:59:59.000Z

166

Using Variable Precision Rough Set Model to Build FP-Tree of Association Rules  

Science Journals Connector (OSTI)

The main mission of the variable precision rough set is to solve the problem of non- ... of association rules algorithms based on variable precision rough set model in e-commerce. The experiments show...

SuJuan Qian; ZhiQiang Zhang

2012-01-01T23:59:59.000Z

167

E-Print Network 3.0 - angle deposited nano-rough Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

nano-rough Search Powered by Explorit Topic List Advanced Search Sample search results for: angle deposited nano-rough Page: << < 1 2 3 4 5 > >> 1 Advanced techniques for glancing...

168

Fundamenta Informaticae 108(3-4), 2011, pp. 267286 267 Game-Theoretic Rough Sets  

E-Print Network [OSTI]

Fundamenta Informaticae 108(3-4), 2011, pp. 267­286 267 IOS Press Game-Theoretic Rough Sets Joseph@cs.uregina.ca Abstract. This article investigates the Game-theoretic Rough Set (GTRS) model and its capability of analyzing a major decision problem evident in existing probabilistic rough set models. A major challenge

Yao, JingTao

169

Space Exploration and Global Optimization for Computationally Intensive Design Problems: A Rough Set Based Approach  

E-Print Network [OSTI]

, and transparent. This work proposes a rough set based approach that can identify multip,le sub-regions in a design than a given level. The rough set method is applied iteratively on a growing sample set. A novel with a few well-known global optimization algorithms. Keywords: rough set, design optimization, space

Wang, Gaofeng Gary

170

Game-Theoretic Risk Analysis in Decision-Theoretic Rough Sets  

E-Print Network [OSTI]

Game-Theoretic Risk Analysis in Decision-Theoretic Rough Sets Joseph P. Herbert JingTao Yao,jtyao]@cs.uregina.ca Abstract. Determining the correct threshold values for probabilistic rough set models has been a heated these tolerance values. 1 Introduction In rough sets [10], a set within the universe of discourse is approximated

Yao, JingTao

171

From Rough Sets to Soft Computing Department of Mathematics and Computer Science, San Jose State University,  

E-Print Network [OSTI]

From Rough Sets to Soft Computing T.Y. Lin Department of Mathematics and Computer Science, San Jose By the invitation of the Conference Chair Professor Paul Wang, a Workshop on Rough Set Theory was held in the Second­October 1, 1995. The workshop in the setting of joint conferences provides a forum for rough setters

Lin, Tsau Young

172

Prediction of Dominant Genes Responsible for Lung Adenocarcinoma using Rough Set Theory  

E-Print Network [OSTI]

Prediction of Dominant Genes Responsible for Lung Adenocarcinoma using Rough Set Theory Abhinandan responsible for Lung Adenocarcinoma using Rough Set Theory. The work takes a microarray dataset containing and attributes. Using rough set theory, redundant attributes are then determined and eliminated. The core

Gesbert, David

173

Implicator-Conjunctor Based Models of Fuzzy Rough Sets: Definitions and Properties  

E-Print Network [OSTI]

Implicator-Conjunctor Based Models of Fuzzy Rough Sets: Definitions and Properties Lynn D'eer1 those proposals which generalize the logical connectives and quantifiers present in the rough set, rough sets, hybridization, lower and upper ap- proximation, implication, conjunction, axiomatic approach

Granada, Universidad de

174

Introduction to the Special Issue on Rough Sets and Soft Computing.  

E-Print Network [OSTI]

Introduction to the Special Issue on Rough Sets and Soft Computing. T. Y. Lin Department, California 94720 . The notion of rough sets was introduced by Zdzislaw Pawlak in his seminal paper of 1982 of information systems. From the outset, rough set theory has been a methodology of database mining or knowledge

Lin, Tsau Young

175

FRPS: A Fuzzy Rough Prototype Selection method Nele Verbiest a,n  

E-Print Network [OSTI]

: Classification Fuzzy rough sets Instance selection k NN Prototype Selection a b s t r a c t The k Nearest with a reduced but reinforced dataset to pick its neighbours from. We use fuzzy rough set theory to express are instance selection methods specifically designed to improve k NN classification. Rough set theory [6

Gent, Universiteit

176

Relations in Mathematical Morphology with applications to Graphs and Rough Sets  

E-Print Network [OSTI]

Relations in Mathematical Morphology with applications to Graphs and Rough Sets John G. Stell School of Computing, University of Leeds Leeds, LS2 9JT, U.K. jgs@comp.leeds.ac.uk Abstract. Rough sets for granularity, and the question of how rough sets relate to mathe- matical morphology has been raised by Bloch

Stell, John

177

Comparison of Rough-set and Interval-set Models for Uncertain Reasoning  

E-Print Network [OSTI]

Comparison of Rough-set and Interval-set Models for Uncertain Reasoning Y.Y. Yao and Xining Li Department of Computer Science Lakehead University Thunder Bay, Ontario, Canada P7B 5E1 Abstract In the rough-set of their extended set-theoretic operators. The operators in the rough-set model are not truth-functional, while

Yao, Yiyu

178

Fundamenta Informaticae 108 (2011) 249265 249 Two Semantic Issues in a Probabilistic Rough Set Model  

E-Print Network [OSTI]

Rough Set Model Yiyu Yao Department of Computer Science University of Regina Regina, Canada yyao@cs.uregina.ca Abstract. Probabilistic rough set models are quantitative generalizations of the classical and qual in a probabilistic rough set model. This paper examines two fundamental semantics-related questions. One

Yao, Yiyu

179

Rough Set Model Selection for Practical Decision Making Joseph P. Herbert JingTao Yao  

E-Print Network [OSTI]

Rough Set Model Selection for Practical Decision Making Joseph P. Herbert JingTao Yao Department}@cs.uregina.ca Abstract One of the challenges a decision maker faces is choos- ing a suitable rough set model to use for data analysis. The traditional algebraic rough set model classifies objects into three regions, namely

Yao, JingTao

180

Personalizing information retrieval in CRISs with Fuzzy Sets and Rough Sets  

E-Print Network [OSTI]

Personalizing information retrieval in CRISs with Fuzzy Sets and Rough Sets Germán Hurtado Martín? Our approach proposes using fuzzy and rough sets to make the matching process between the users. Furthermore, both fuzzy and rough sets perform well in the presence of imperfect or missing information

Gent, Universiteit

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Rough Sets for Uncertainty Reasoning S.K.M. Wong1  

E-Print Network [OSTI]

Rough Sets for Uncertainty Reasoning S.K.M. Wong1 and C.J. Butz2 1 Department of Computer Science & Engineering, University of Ottawa, Ottawa, Canada, K1N 6N5, butz@site.uottawa.ca Abstract. Rough sets have traditionally been applied to decision (clas- sification) problems. We suggest that rough sets are even better

Butz, Cory J.

182

Fundamenta Informaticae XX (2004) 118 1 A New Rough Sets Model Based on Database Systems  

E-Print Network [OSTI]

Fundamenta Informaticae XX (2004) 1­18 1 IOS Press A New Rough Sets Model Based on Database Systems, USA jhan@csudh.edu Abstract. Rough sets theory was proposed by Pawlak in the 1980s and has been applied success- fully in a lot of domains. One of the major limitations of the traditional rough sets

Lin, Tsau Young

183

Concept Lattices in Rough Set Theory Department of Computer Science, University of Regina  

E-Print Network [OSTI]

Concept Lattices in Rough Set Theory Y.Y. Yao Department of Computer Science, University of Regina-- An alternative formulation of rough set theory can be developed based on a binary relation between two universes, one is a finite set of objects and the other is a finite set of properties. Rough set approximation

Yao, Yiyu

184

Fundamenta Informaticae 34 (1999) 1{21 1 Contributions to the Theory of Rough Sets  

E-Print Network [OSTI]

Fundamenta Informaticae 34 (1999) 1{21 1 IOS Press Contributions to the Theory of Rough Sets V, KY 40506{0046 marek|mirek@cs.uky.edu Abstract. We study properties of rough sets, that is system. A rough set is a pair hL; U i such that L; U are de nable in the information system and L U

Truszczynski, Miroslaw

185

A Comparative Study of Formal Concept Analysis and Rough Set Theory in Data Analysis  

E-Print Network [OSTI]

A Comparative Study of Formal Concept Analysis and Rough Set Theory in Data Analysis Yiyu (Y@cs.uregina.ca; http://www.cs.uregina.ca/yyao Abstract. The theory of rough sets and formal concept analysis. Formal concept analysis focuses on concepts that are definable by conjuctions of properties, rough set

Yao, Yiyu

186

Neurocomputing 36 (2001) 1}3 Presenting the special issue on Rough-neuro computing  

E-Print Network [OSTI]

, adaptation, and self-organization on the other. Granular computing including rough sets and fuzzy sets of neural networks and granular computing, in particular rough sets and fuzzy sets. There are 10 papers a way of integrating rough set theory with a fuzzy MLP using a modular evolutionary algorithm

Pal, Sankar Kumar

187

Improving SMOTE with Fuzzy Rough Prototype Selection to detect Noise in Imbalanced  

E-Print Network [OSTI]

). Using fuzzy rough set theory, the noise level of each instance is measured, and instances for which Rough Set The- ory 1 Introduction Imbalanced classification has become an important field in data mining on fuzzy rough set theory [7]. Next, we remove all instances that have a noise

Gent, Universiteit

188

Ablation of carbon-based materials : investigation of roughness set-up from  

E-Print Network [OSTI]

Ablation of carbon-based materials : investigation of roughness set-up from heterogeneous reactions for roughness set-up is investigated, based on the coupling between diffusive transfer in the sur- rounding and heat transfers, the importance of which relies on the surface roughness. A new possible physical cause

Paris-Sud XI, Université de

189

Generalization of Rough Sets using Modal Logics Department of Computer Science, Lakehead University  

E-Print Network [OSTI]

Generalization of Rough Sets using Modal Logics Y.Y. Yao Department of Computer Science, Lakehead@cs.sjsu.edu Abstract The theory of rough sets is an extension of set theory with two addi­ tional unary set operators in modal logics. By explor­ ing the relationship between rough sets and modal logics, this paper

Lin, Tsau Young

190

Information Granulation and Approximation in a Decision-theoretic Model of Rough Sets  

E-Print Network [OSTI]

Information Granulation and Approximation in a Decision-theoretic Model of Rough Sets Y.Y. Yao in the gran- ulated universe are two related fundamental issues in the theory of rough sets. Many proposals of results from existing studies that are relevant to a decision-theoretic modeling of rough sets. Two

Yao, Yiyu

191

A Comparative Study of Fuzzy Sets and Rough Sets Department of Computer Science, Lakehead University  

E-Print Network [OSTI]

A Comparative Study of Fuzzy Sets and Rough Sets Y.Y. Yao 1 Department of Computer Science and compares theories of fuzzy sets and rough sets. Two approaches for the formulation of fuzzy sets are reviewed, one is based on many-valued logic and the other is based on modal logic. Two views of rough sets

Yao, Yiyu

192

Fundamenta Informaticae 34 (1999) 1--21 1 Contributions to the Theory of Rough Sets  

E-Print Network [OSTI]

Fundamenta Informaticae 34 (1999) 1--21 1 IOS Press Contributions to the Theory of Rough Sets V Lexington, KY 40506--0046 marek---mirek@cs.uky.edu Abstract. We study properties of rough sets, that is system. A rough set is a pair hL; Ui such that L; U are definable in the information system and L ` U

Truszczynski, Miroslaw

193

Two Views of the Theory of Rough Sets in Finite Universes  

E-Print Network [OSTI]

Two Views of the Theory of Rough Sets in Finite Universes Y.Y. Yao 1 Department of Computer Science This paper presents and compares two views of the theory of rough sets. The operator-oriented view interprets rough set theory as an extension of set theory with two additional unary operators. Under such a view

Yao, Yiyu

194

Fuzzy Rough Set Based Web Query Expansion Martine De Cock and Chris Cornelis  

E-Print Network [OSTI]

Fuzzy Rough Set Based Web Query Expansion Martine De Cock and Chris Cornelis Fuzziness, Krijgslaan 281 (S9), 9000 Gent, Belgium {Martine.DeCock, Chris.Cornelis}@UGent.be Abstract Fuzzy rough set on average -- we focus on query ex- pansion, i.e. the process of adding related terms to the query. Rough set

Gent, Universiteit

195

Fuzzy Rough Sets: Beyond the Obvious Martine De Cock, Chris Cornelis, Etienne Kerre  

E-Print Network [OSTI]

Fuzzy Rough Sets: Beyond the Obvious Martine De Cock, Chris Cornelis, Etienne Kerre Fuzziness.Kerre@UGent.be Abstract-- Rough set theory was introduced in 1982. Soon it was combined with fuzzy set theory, giving rise. I. INTRODUCTION Pawlak [12] launched rough set theory as a framework for the construction

Gent, Universiteit

196

Incorporating Game-theoretic Rough Sets in Web-based Medical Decision Support Systems  

E-Print Network [OSTI]

Incorporating Game-theoretic Rough Sets in Web-based Medical Decision Support Systems JingTao Yao of game-theoretic rough set (GTRS) component in WMDSS is explored and investigated for this purpose. The GTRS is a recent development in rough sets that takes advantages from data analysis capabilities

Yao, JingTao

197

A Rough Sets Based Approach to Feature Selection M. Zhang J. T. Yao  

E-Print Network [OSTI]

A Rough Sets Based Approach to Feature Selection M. Zhang J. T. Yao Department of Computer Science. The features are measured by their necessity in heuristic feature selection techniques. Rough set theory has been used to define the necessity of features in literature. We propose a new rough set based feature

Yao, JingTao

198

Decision-Theoretic Rough Set Models Department of Computer Science, University of Regina,  

E-Print Network [OSTI]

Decision-Theoretic Rough Set Models Yiyu Yao Department of Computer Science, University of Regina, Regina, Saskatchewan, Canada S4S 0A2 E-mail: yyao@cs.uregina.ca Abstract. Decision-theoretic rough set models are a probabilistic exten- sion of the algebraic rough set model. The required parameters

Yao, Yiyu

199

Interval-valued Fuzzy-Rough Feature Selection and Application for Handling Missing Values in Datasets  

E-Print Network [OSTI]

, UK {rkj,qqs}@aber.ac.uk Abstract One of the many successful applications of rough set theory has been to the area of feature selection. The rough set ideol- ogy of using only the supplied data and no other information has many benefits, where most other methods require sup- plementary knowledge. Fuzzy-rough set

Lucas, Simon M.

200

The effect of roughness on aerosol deposition in tubes  

E-Print Network [OSTI]

is the Reynolds number. The data formed a peculiar dip at a Reynolds number between 2000 and 10, 000 (depending on roughness) and remained fairly constant for increased Reynolds number. Nikuradse concluded that when the thickness of the laminar layer is greater...). The experiments of Wirtz and Chen (1991) were conducted on internally transverse finned (ribbed) tubes for a Reynolds number range of 2000 - 8000 and various rib spacings (3 - 18 mm) and heights (12 - 18 mm), using air as the fluid media. Their experimental...

Chavez, Mario Cesar

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Scaling laws governing the roughness of the swash edge line  

E-Print Network [OSTI]

The physics of swash i.e. a layer of water that washes up on the beach after an incoming wave has broken is complicated and intriguing. It includes perplexed hydrodynamic and sediment transport events. In our paper we address to the roughness of the moving swash boundary at which a beach, water and air meet. We treat the behavior of this boundary as an interfacial phenomenon, without going into details of formation of edge waves and beach cusps, covered broadly in literature. This "crude" approach turns out to be productive and revealing the resemblance of the swash line with a broad diversity of effects arising from the random pinning of moving boundaries.

Ed. Bormashenko; A. Musin; R. Grynuov

2014-02-23T23:59:59.000Z

202

On the relation between rough set reducts and typical testors  

Science Journals Connector (OSTI)

Abstract This paper studies the relations between rough set reducts and typical testors from the so-called logical combinatorial approach to pattern recognition. Definitions, comments and observations are formally introduced and supported by illustrative examples. Furthermore, some theorems expressing theoretical relations between reducts and typical testors are enunciated and proved. We also discuss several practical applications of these relations that can mutually enrich the development of research and applications in both areas. Although we focus on the relation between the classical concepts of testor and reduct, our study can be expanded to include other types of testors and reducts.

Manuel S. Lazo-Cortés; José Fco. Martínez-Trinidad; Jesús A. Carrasco-Ochoa; Guillermo Sanchez-Diaz

2015-01-01T23:59:59.000Z

203

Residual stresses in annealed zircaloy  

SciTech Connect (OSTI)

Neutron diffraction has been used to measure the lattice constants of single crystal and rod-textured polycrystalline Zircaloy-2 in the temperature range 300-900 K. While the single crystal remains strain-free during heating or cooling, large residual grain-interaction strains occur in the polycrystalline sample as the result of compatibility being maintained among grains with anisotropic thermal expansion coefficients. These residual thermal strains have been determined as a function of temperature from the difference between the single and polycrystal lattice constants. Analysis of the data has been done using a polycrystalline deformation model, QUEST, which accounts for anisotropic elasticity, plasticity and thermal expansion, and for crystallographic texture of the sample. It is found that slow cooling from 900 K introduces residual stresses of the order of 100 MPa in the polycrystalline sample. The calculations demonstrate that these residual stresses can explain not only the difference in the proportional limits in tension and compression (strength differential) but also differences in the initial work hardening behaviour when Zircaloy-2 is deformed in tension or compression.

Tome, C.; Faber, J.; MacEwen, S.R.

1989-03-01T23:59:59.000Z

204

Influence of roughness on near-field heat transfer between two plates  

E-Print Network [OSTI]

The surface roughness correction to the near-field heat transfer between two rough bulk materials is discussed by using second-order perturbation theory. The results allow for estimating the impact of surface roughness to the heat transfer in recent experiments between two plates and between a microsphere and a plate (using the Derjaguin approximation). Furthermore, we show that the proximity approximation for describing rough surfaces is valid for distances much smaller than the correlation length of the surface roughness even if the heat transfer is dominated by the coupling of surface modes.

Svend-Age Biehs; Jean-Jacques Greffet

2011-03-11T23:59:59.000Z

205

File:Wind rough example.pdf | Open Energy Information  

Open Energy Info (EERE)

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206

Rough set approach to the evaluation of stormwater pollution  

Science Journals Connector (OSTI)

This paper addresses the problem of urban stormwater quality and its impacts on the receiving water. In order to describe this phenomenon, research aimed at creating a mathematical model of pollution has been conducted. Although various deterministic and stochastic models exist already, the quality of stormwater phenomenon deserves a very careful and thoughtful validation. In order to take advantage of some empirical observations available, we introduce an inductive learning method to discover some regularities in form of ''if...then...'' rules. We suggest the use of the rough set theory for this purpose. This approach is able to process both quantitative and qualitative data and also accepts inconsistency in the dataset. The rules generated from the data explain the phenomenon in terms of relevant attributes, and can be used to predict the level of pollution from future events. We present the results of the rough set analysis of a dataset concerning five catchments in the urban area of Lausanne and Geneva, Switzerland. The application of the rules to events from other catchments, particularly in France, proves the good prediction ability of our model.

Luca Rossi; Roman Slowinski; Robert Susmaga

1999-01-01T23:59:59.000Z

207

Rough set-based regionalisation in air quality monitoring  

Science Journals Connector (OSTI)

Regionalisation is to organise a large set of spatial objects into spatially contiguous regions despite optimising the homogeneity of the derived regions, while representing social and economic geography. To confront this problem, it is necessary to classify the regions to form groups that are homogeneous in air quality attributes. It is to develop a system that applies data mining techniques to study the distribution of air pollutants in Chennai, a metro city in India using vehicular ad hoc networking and map the distribution on the geographical map for effective policy making. In conventional regionalisation methods, the data points are assigned to a single region in a multidimensional attribute space affecting air pollution response. However, some data points, having distributed membership to more than one region, could not be justified and allocated to a single region. Rough set-based clustering technique is applied to regionalisation problem to resolve vague or overlapping regions. The overlapping regions are restructured to guarantee the homogeneity of the regions formed or altered. The investigations of the cluster validity tests confirm the effectiveness of rough set-based regionalisation in air quality modelling.

Komathy Karuppanan; Christina Jayakumaran

2013-01-01T23:59:59.000Z

208

Evaluation of residue drum storage safety risks  

SciTech Connect (OSTI)

A study was conducted to determine if any potential safety problems exist in the residue drum backlog at the Rocky Flats Plant. Plutonium residues stored in 55-gallon drums were packaged for short-term storage until the residues could be processed for plutonium recovery. These residues have now been determined by the Department of Energy to be waste materials, and the residues will remain in storage until plans for disposal of the material can be developed. The packaging configurations which were safe for short-term storage may not be safe for long-term storage. Interviews with Rocky Flats personnel involved with packaging the residues reveal that more than one packaging configuration was used for some of the residues. A tabulation of packaging configurations was developed based on the information obtained from the interviews. A number of potential safety problems were identified during this study, including hydrogen generation from some residues and residue packaging materials, contamination containment loss, metal residue packaging container corrosion, and pyrophoric plutonium compound formation. Risk factors were developed for evaluating the risk potential of the various residue categories, and the residues in storage at Rocky Flats were ranked by risk potential. Preliminary drum head space gas sampling studies have demonstrated the potential for formation of flammable hydrogen-oxygen mixtures in some residue drums.

Conner, W.V.

1994-06-17T23:59:59.000Z

209

Residue management at Rocky Flats  

SciTech Connect (OSTI)

Past plutonium production and manufacturing operations conducted at the Rocky Flats Environmental Technology Site (RFETS) produced a variety of plutonium-contaminated by-product materials. Residues are a category of these materials and were categorized as {open_quotes}materials in-process{close_quotes} to be recovered due to their inherent plutonium concentrations. In 1989 all RFETS plutonium production and manufacturing operations were curtailed. This report describes the management of plutonium bearing liquid and solid wastes.

Olencz, J.

1995-12-31T23:59:59.000Z

210

The effects of the substrate surface roughness on graphene plasmons  

SciTech Connect (OSTI)

We investigate the effects of variation in the gap size between mono-layer graphene and a substrate with a randomly rough surface on the linear response of graphene’s ? electron bands within the approximation of Dirac fermions. We adopt the electrostatic Green’s function developed by Rahman and Maradudin [Phys. Rev. B 21, 2137–2143 (1980)] for the surface of a dielectric medium, which exhibits a Gaussian distributed height profile and combine it with the polarization function of graphene described as a zero-thickness planar layer at a fixed distance from the mean position of the substrate surface. We specifically consider the effects of a random gap size on the two-dimensional sheet plasmon mode in heavily doped graphene, both on its dispersion relation in the long-wavelength limit and its broadening due to Landau damping in the continuum of inter-band electron-hole excitations at shorter wavelengths.

Lyon, Keenan A.; Miskovic, Zoran L. [Department of Applied Mathematics, University of Waterloo, 200 University Ave W, N2L 3G1, Waterloo, Ontario (Canada)

2014-03-31T23:59:59.000Z

211

Scaling relations for contour lines of rough surfaces  

Science Journals Connector (OSTI)

Equilibrium and nonequilibrium growth phenomena, e.g., surface growth, generically yields self-affine distributions. Analysis of statistical properties of these distributions appears essential in understanding statistical mechanics of underlying phenomena. Here, we analyze scaling properties of the cumulative distribution of iso-height loops (i.e., contour lines) of rough self-affine surfaces in terms of loop area and system size. Inspired by the Coulomb gas methods, we find the generating function of the area of the loops. Interestingly, we find that, after sorting loops with respect to their perimeters, Zipf-like scaling relations hold for ranked loops. Numerical simulations are also provided in order to demonstrate the proposed scaling relations.

M. A. Rajabpour and S. M. Vaez Allaei

2009-07-13T23:59:59.000Z

212

Forward approximation and backward approximation in fuzzy rough sets  

Science Journals Connector (OSTI)

Abstract It is general to obtain rules by attribute reduction in fuzzy information systems. Instead of obtaining rules by attribute reduction, which may have a negative effect on inducting good rules, the objective of this paper is to extract rules without computing attribute reducts. Forward and backward approximations in fuzzy rough sets are first defined, and their important properties are discussed. Two algorithms based on forward and backward approximations, namely, mine rules based on the forward approximation (MRBFA) and mine rules based on the backward approximation (MRBBA), are proposed for rule extraction. The two algorithms are evaluated by several data sets from the UC Irvine Machine Learning Repository. The experimental results show that both MRBFA and MRBBA achieve better classification performances than the method based on attribute reduction.

Yi Cheng

2015-01-01T23:59:59.000Z

213

Transforms for prediction residuals in video coding  

E-Print Network [OSTI]

Typically the same transform, the 2-D Discrete Cosine Transform (DCT), is used to compress both image intensities in image coding and prediction residuals in video coding. Major prediction residuals include the motion ...

Kam??l?, Fatih

2010-01-01T23:59:59.000Z

214

Effects of the roughness characteristics on the wire tool surface for the electrical discharge machining properties  

SciTech Connect (OSTI)

Wire electrical discharge machining (WEDM) has been investigated to obtain the better discharge machining properties of the removal rate and the surface roughness in a few decades. Recently, it revealed that the rough tool electrodes can improve the WEDM properties for some sort of materials. In this study, the rough wire electrodes using a wet blasting method was developed and evaluated the machining performance for the insulated Si{sub 3}N{sub 4} in the WEDM processes. As the results, it could not recognize the advantage of roughness wire electrode under the high-energy condition, but it found that the electro-conductive layer thickness became thinner in comparison with those of normal wires. On the contrary, it could be obtained the better surface roughness in the low energy condition. It was supposed that the roughed wire surface generates the homogeneous dispersion discharges on the workpiece.

Fukuzawa, Yasushi; Yamashita, Masahide; Mamuro, Hiroaki; Yamashita, Ken [Nagaoka University of Technology, Department of Mechanical Engineering, 1603-1 Kamitomioka-machi, Nagaoka, Niigata, 940-2188 (Japan); Ogata, Masayoshi [Macoho Co., Ltd. 525 Kanawa, Isurugi-machi, Nagaoka, Niigata 940-2032 JAPAN (Japan)

2011-01-17T23:59:59.000Z

215

Rough Approximations under Level Fuzzy Sets W.-N. Liu J.T. Yao Y.Y.Yao  

E-Print Network [OSTI]

Rough Approximations under Level Fuzzy Sets W.-N. Liu J.T. Yao Y.Y.Yao Department of Computer]@cs.uregina.ca Abstract. The combination of fuzzy set and rough set theories lead to various models. Functional and set- mations based on the notion of level fuzzy sets. Two rough approximation models, namely -level rough set

Yao, JingTao

216

2012 IEEE International Conference on Granular Computing Granular and Rough Computing on Covering  

E-Print Network [OSTI]

@gmail.comxiejun@tyut.edu.cn San Jose, CA, USA tylin@cs.sjsu.edu Abstract-Covering-based rough set (CRS) is a meaningful and important generalization of Pawlak's rough set theory. The primary goal of this paper is to extend-covering-based rough set; the globaV2nd GrC Model; neighborhood system; best upper and lower approxi mations; largest

Lin, Tsau Young

217

Scattering of optical guided waves by waveguide surface roughness: a three-dimensional treatment  

Science Journals Connector (OSTI)

The scattering of optical guided waves by waveguide surface roughness has been analyzed in three dimensions. The scattered fields were determined by satisfying the boundary conditions...

Hall, D G

1981-01-01T23:59:59.000Z

218

Procedure of evaluating the surface roughness of the electrospark coating after burnishing with mineral ceramics  

Science Journals Connector (OSTI)

The procedure of evaluating the surface roughness of metal-cutting tools strengthened by the local electrospark deposition of coatings with the subsequent burnishing with...

V. N. Gadalov; D. N. Romanenko; V. V. Samoilov…

2012-07-01T23:59:59.000Z

219

Rough sets on fuzzy approximation spaces and applications to distributed knowledge systems  

Science Journals Connector (OSTI)

A fuzzy relation is an extension of crisp relation on any set U. Fuzzy proximity relations on U are much more general and abundant than equivalence relations. The fuzzy approximation space which depends upon a fuzzy proximity relation defined on a set U is a generalisation of the concept of knowledge base. So, rough sets defined on fuzzy approximation spaces extend the concept of rough sets on knowledge bases. The results of the present paper extend the basic properties of rough sets and results involving set theoretic operations on types of rough sets that have been established in Tripathy and Mitra (2008).

D.P. Acharjya; B.K. Tripathy

2008-01-01T23:59:59.000Z

220

A study on some topological aspects of fuzzy sets, rough sets and soft sets; -.  

E-Print Network [OSTI]

??This thesis consists of three major parts viz., study of the topological notions of fuzzy sets, rough sets and soft sets. The first part consists… (more)

Juthika, Mahanta

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Process to recycle shredder residue  

DOE Patents [OSTI]

A system and process for recycling shredder residue, in which separating any polyurethane foam materials are first separated. Then separate a fines fraction of less than about 1/4 inch leaving a plastics-rich fraction. Thereafter, the plastics rich fraction is sequentially contacted with a series of solvents beginning with one or more of hexane or an alcohol to remove automotive fluids; acetone to remove ABS; one or more of EDC, THF or a ketone having a boiling point of not greater than about 125.degree. C. to remove PVC; and one or more of xylene or toluene to remove polypropylene and polyethylene. The solvents are recovered and recycled.

Jody, Bassam J. (Chicago, IL); Daniels, Edward J. (Oak Lawn, IL); Bonsignore, Patrick V. (Channahon, IL)

2001-01-01T23:59:59.000Z

222

Investigation of rotor blade roughness effects on turbine performance  

SciTech Connect (OSTI)

The cold air test program was completed on the SSME (Space Shuttle Main Engine) HPFTP (High-Pressure Fuel Turbopump) turbine with production nozzle vane rings and polished coated rotor blades with a smooth surface finish of 30[mu]in. (0.76 [mu]m) rms (root mean square). The smooth blades were polished by an abrasive flow machining process. The test results were compared with the air test results from production rough-coated rotor blades with a surface finish of up to 400 [mu]in. (10.16 [mu]m) rms. Turbine efficiency was higher for the smooth blades over the entire range tested. Efficiency increased 2.1 percentage points at the SSME 104 percent RPL (Rated Power Level) conditions. This efficiency improvement could reduce the SSME HPFTP turbine inlet temperature by 57 R (32K), increasing turbine durability. The turbine flow parameter increased and the midspan outlet swirl angle became more axial with the smooth rotor blades.

Boynton, J.L.; Tabibzadeh, R. (Rockwell International Corp., Canoga Park, CA (United States). Rocketdyne Div.); Hudson, S.T. (NASA-Marshall Space Flight Center, Huntsville, AL (United States))

1993-07-01T23:59:59.000Z

223

An approach to configuring product family using rough set theory  

Science Journals Connector (OSTI)

Configuration design is one of the most important elements in the design for product family, with which designers could customise products for customers according to their specific requirements. The traditional approach to configuring products is based on configuration rules which reflect the mapping relations between customer requirements and design variables. But how to acquire the configuration rules is becoming the bottleneck. A kind of general way is to depend on design experts themselves to create such rules. It would take plenty of time for design experts to establish rules database. As such, this paper presents a framework of configuration design for product family through giving the variant components with different attribute values, in which the acquisition of configuration rules is connected with the idea of data mining using the rough set theory from large numbers of historical design data instead of the design expert's experience. It can help not only design experts but also novice designers analyse the dependence between customer requirements and design parameters, and acquire the configuration rules hidden in the historical data easily.

Bin Zhu; Pingyu Jiang

2005-01-01T23:59:59.000Z

224

QUANTIFICATION OF DEFORMATION-INDUCED SURFACE ROUGHENING USING MODIFIED ROUGHNESS PARAMETERS AND FOURIER FILTERING.  

E-Print Network [OSTI]

Surfaces of metal sheets initially contain high frequency, low amplitude roughness components imparted during the rolling process. When plastic deformation is imposed, the amplitude of these free surface components increases, producing various kinds of morphological features including randomness, periodicity and waviness. The features often control key functional aspects of a metal surface, such as reflected image clarity, lubricant transport, and spot weldability. The key to understanding the evolution of topographical features on plastically deformed sheet surfaces involves characterizing those features using appropriate quantitative measures. In this study, selected roughness characterization tools are used to 3-D surface roughening of 6022-T4 Al sheets deformed in plane strain. Modified roughness parameters, viz., peak-to-valley mean-height roughness (Rmh) and 10 % mean-height roughness (Rpv), were used to characterize roughness amplitude in order to overcome the deficiencies inherent with the root mean square roughness (Rq). A new approach, in which the roughness pattern is divided into several regimes, was also used to investigate the frequency components that provide the major contributions to surface roughening. The Fast Fourier

unknown authors

225

On the limiting aerodynamic roughness of the ocean in very strong winds  

E-Print Network [OSTI]

On the limiting aerodynamic roughness of the ocean in very strong winds M. A. Donelan,1 B. K. Haus January 2004; accepted 13 August 2004; published 28 September 2004. [1] The aerodynamic friction between, the ``aerodynamic roughness'') increases with the wind speed. Can one merely extrapolate this wind speed tendency

Saltzman, Eric

226

A rough set-based association rule approach implemented on exploring beverages product spectrum  

Science Journals Connector (OSTI)

When items are classified according to whether they have more or less of a characteristic, the scale used is referred to as an ordinal scale. The main characteristic of the ordinal scale is that the categories have a logical or ordered relationship to ... Keywords: Association rule, Data mining, Ordinal scale data processing, Product spectrum, Rough set, Rough set association rule

Shu-Hsien Liao, Yin-Ju Chen

2014-04-01T23:59:59.000Z

227

Maximum Class Separability for Rough-Fuzzy C-Means Based Brain MR Image Segmentation  

E-Print Network [OSTI]

Maximum Class Separability for Rough-Fuzzy C-Means Based Brain MR Image Segmentation Pradipta Maji of brain MR images. The RFCM algorithm comprises a judicious integration of the of rough sets, fuzzy sets with vagueness and incompleteness in class definition of brain MR images, the membership function of fuzzy sets

Pal, Sankar Kumar

228

The Position of Rough Set in Soft Set: A Topological Approach  

Science Journals Connector (OSTI)

In this paper, the author presents the concept of topological space that must be used to show a relation between rough set and soft set. There are two main results presented; firstly, a construction of a quasi-discrete topology using indiscernibility ... Keywords: Indiscernibility Relation, Quasi Discrete, Rough Set Theory, Soft Set Theory, Topological Space

Tutut Herawan

2012-07-01T23:59:59.000Z

229

Three-Way Decision: An Interpretation of Rules in Rough Set Theory  

E-Print Network [OSTI]

Three-Way Decision: An Interpretation of Rules in Rough Set Theory Yiyu Yao Department of Computer theory is to induce classification or de- cision rules that indicate the decision class of an object. A new interpretation of rules in rough set theory is intro- duced. According to the positive, boundary

Yao, Yiyu

230

Independent External Peer Review Report Rough River Dam 18 August 2011 ii  

E-Print Network [OSTI]

#12;Independent External Peer Review Report ­ Rough River Dam 18 August 2011 ii This page intentionally blank. #12;Independent External Peer Review Report ­ Rough River Dam 18 August 2011 iii Table.3 Preparation and Charge for Peer Review Panel 7 3.4 Performing the IEPR 8 3.5 Preparation and Review of Draft

US Army Corps of Engineers

231

Segmentation of Rough Surfaces Using a Polarization Imaging Patrick Terrier, Vincent Devlaminck, Jean Michel Charbois  

E-Print Network [OSTI]

methods, that do not require contact with the surface and allow for high measurement speed, have been, based on light scattering[4], our goal is not to measure precisely the roughness, but to obtain. INTRODUCTION The conventional method for measuring surface roughness consists in moving a stylus probe touching

Paris-Sud XI, Université de

232

Savannah River Tank Waste Residuals  

Broader source: Energy.gov (indexed) [DOE]

Savannah Savannah River Savannah River Tank Waste Residuals HLW Corporate Board November 6, 2008 1 November 6, 2008 Presentation By Sherri R. Ross Department of Energy Savannah River Operations Office The Issue * How clean is clean? * Ultimate Challenge - Justify highly radioactive radionuclides have been removed to the maximum extent practical? 2 removed to the maximum extent practical? - Building compelling regulatory documentation that will withstand intense scrutiny §3116 Requirements 1. Does not require disposal in deep geological repository 2. Highly radioactive radionuclides removed to the maximum extent practical 3. Meet the performance objectives in 10 CFR Part 3 3. Meet the performance objectives in 10 CFR Part 61, Subpart C 4. Waste disposed pursuant to a State-approved closure plan or permit Note: If it is anticipated that Class C disposal limits will be exceeded, additional

233

Near-field heat transfer between a nanoparticle and a rough surface  

E-Print Network [OSTI]

In this work we focus on the surface roughness correction to the near-field radiative heat transfer between a nanoparticle and a material with a rough surface utilizing a direct perturbation theory up to second order in the surface profile. We discuss the different distance regimes for the local density of states above the rough material and the heat flux analytically and numerically. We show that the heat transfer rate is larger than that corresponding to a flat surface at short distances. At larger distances it can become smaller due to surface polariton scattering by the rough surface. For distances much smaller than the correlation length of the surface profile, we show that the results converge to a proximity approximation, whereas in the opposite limit the rough surface can be replaced by an equivalent surface layer.

Svend-Age Biehs; Jean-Jacques Greffet

2011-03-11T23:59:59.000Z

234

?-Dominance relation and rough sets in interval-valued information systems  

Science Journals Connector (OSTI)

Abstract Though rough set has been widely used to study systems characterized by insufficient and incomplete information, its performance in dealing with initial interval-valued data needs to be seriously considered for improving the suitability and scalability. The aim of this paper is to present a parameterized dominance-based rough set approach to interval-valued information systems. First, by considering the degree that an interval-valued data is dominating another one, we propose the concept of ?-dominance relation. Second, we present the ?-dominance based rough set model in interval-valued decision systems. Finally, we introduce lower and upper approximate reducts into ?-dominance based rough set for simplifying decision rules, we also present the judgement theorems and discernibility functions, which describe how lower and upper approximate reducts can be calculated. This study suggests potential application areas and new research trends concerning rough set approach to interval-valued information systems.

Xibei Yang; Yong Qi; Dong-Jun Yu; Hualong Yu; Jingyu Yang

2015-01-01T23:59:59.000Z

235

Residual stress patterns in steel welds  

SciTech Connect (OSTI)

Neutron strain scanning of residual stress is a valuable nondestructive tool for evaluation of residual stress in welds. The penetrating characteristic of neutrons permits mapping of strain patterns with a spatial resolution approaching 1mm at depths of 20mm in steels. While the overall patterns of the residual stress tensor in a weld are understood, the detailed patterns depend on welding process parameters and the effects of solid state transformation. The residual strain profiles in two multi-pass austenitic welds and a ferritic steel weld are presented. The stress-free lattice parameters within the fusion zone and the adjacent heat affected zone in the two austenitic welds show that the interpretation of residual stress from strains are affected by welding parameters. An interpretation of the residual strain pattern in the ferritic steel plate can be made using the strain measurements of a Gleeble test bar which has undergone the solid state austenite decomposition.

Spooner, S.; Hubbard, C.R.; Wang, X.L.; David, S.A.; Holden, T.M. [Oak Ridge National Lab., TN (United States); Root, J.H.; Swainson, I. [Atomic Energy of Canada Ltd., Chalk River, ON (Canada)

1994-12-31T23:59:59.000Z

236

Residual Toxicities of Insecticides to Cotton Insects.  

E-Print Network [OSTI]

the effects of simulated wind and rain on the residues. Tempera- ture and humidity conditions incident to the holding period were sufficient to destroy most of the residual toxicity of this material. Effect of Simulated Wind Among the chlorinated... hydrocarbon insecticides, there was little difference between the effects of simu- lated wind and rain on residual toxicities. However, it is likely that under field conditions the effects of rain would be more noticeable. Simulated wind was less damaging...

Hightower, B. G.; Gaines, J. C.

1960-01-01T23:59:59.000Z

237

Residual Gas Mobility in Ormen Lange.  

E-Print Network [OSTI]

?? The topic of this report is "Mobility of Residual Gas in Ormen Lange" and it has been prepared as a part of the course… (more)

Undeland, Elisabeth

2012-01-01T23:59:59.000Z

238

,,,"Residual Fuel Oil(b)",,,," Alternative...  

U.S. Energy Information Administration (EIA) Indexed Site

Standard Errors for Table 10.5;" " Unit: Percents." ,,,"Residual Fuel Oil(b)",,,," Alternative Energy Sources(c)" ,,,"Coal Coke" "NAICS"," ","Total","...

239

Methods of separating particulate residue streams  

DOE Patents [OSTI]

A particulate residue separator and a method for separating a particulate residue stream may include an air plenum borne by a harvesting device, and have a first, intake end and a second, exhaust end; first and second particulate residue air streams that are formed by the harvesting device and that travel, at least in part, along the air plenum and in a direction of the second, exhaust end; and a baffle assembly that is located in partially occluding relation relative to the air plenum and that substantially separates the first and second particulate residue air streams.

Hoskinson, Reed L. (Rigby, ID); Kenney, Kevin L. (Idaho Falls, ID); Wright, Christopher T. (Idaho Falls, ID); Hess, J. Richard (Idaho Falls, ID)

2011-04-05T23:59:59.000Z

240

Assessment of secondary crop residues. Final report  

SciTech Connect (OSTI)

This report is the first of three reports assessing the feasibility of converting secondary agricultural residues to energy in the form of either methane gas or ethyl alcohol. Secondary agricultural residues are defined in this study as those residues resulting from biomass processing to produce primary products; e.g., whey from cheese processing, vegetable processing wastes, residues from paper pulping, etc. This report summarizes the first two phases of this study, data compilation, and evaluation. Subsequent reports will analyze the technical and economic feasibility of converting these residues to energy and the implementability of this technology. The industries for which data has been compiled in this report include vegetable, fruit, seafood, meat, poultry, and dairy processing and the pulp, paper, and paperboard industry. The data collected include raw product input, final processed product output, residue types, and quantity, residue concentration, biodegradability, seasonality of production, and geographic distribution of processing facilities. In general, these industries produce a relatively solid residue ranging in total solids concentration from 10 to 50% and a dilute liquid residue with an organic content (measured as COD or BOD) ranging from a few hundred to a few thousand mg/l. Due to the significant quantities of residues generated in each of the industries, it appears that the potential exists for generating a substantial quantity of energy. For a particular industry this quantity of energy can range from only one percent upwards to nearly thirty-five percent of the total processing energy required. The total processing energy required for the industries included in this study is approximately 2.5 quads per year. The potential energy which can be generated from these industrial residues will be 0.05 to 0.10 quads per year or approximately 2 to 4 percent of the total demand.

Ashare, E.; Leuschner, A.P.; West, C.E.; Langton, B.

1981-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Matroidal structure of covering-based rough sets through the upper approximation number  

Science Journals Connector (OSTI)

Covering-based rough set theory is a generalisation of rough set theory. Matroids are based on linear algebra and graph theory, and have a variety of applications in many fields. In this paper, we introduce matroid theory to covering-based rough sets, and explore the matroidal structure and properties of covering-based rough sets. Specifically, we define the upper approximation number to establish the matroidal structure of covering-based rough sets. So many important concepts and methods in matroid theory can be employed to investigate covering-based rough sets. The rank plays a very important role in a matrix, so we use the rank function of the matroid induced by a covering to measure the covering. With the rank function, a pair of approximation operators, namely, matroid approximation operators, are constructed. This type of approximation operators not only inherits the properties of those traditional ones which are defined from the perspective of set theory, but also presents some new properties. Finally, the matroid upper approximations are compared with the second upper approximations in covering-based rough sets.

Shiping Wang; William Zhu

2011-01-01T23:59:59.000Z

242

Auto shredder residue recycling: Mechanical separation and pyrolysis  

Science Journals Connector (OSTI)

Directive 2000/53/EC sets a goal of 85% material recycling from end-of-life vehicles (ELVs) by the end of 2015. The current ELV recycling rate is around 80%, while the remaining waste is called automotive shredder residue (ASR), or car fluff. In Europe, this is mainly landfilled because it is extremely heterogeneous and often polluted with car fluids. Despite technical difficulties, in the coming years it will be necessary to recover materials from car fluff in order to meet the ELV Directive requirement. This study deals with ASR pretreatment and pyrolysis, and aims to determine whether the ELV material recycling target may be achieved by car fluff mechanical separation followed by pyrolysis with a bench scale reactor. Results show that flotation followed by pyrolysis of the light, organic fraction may be a suitable ASR recycling technique if the oil can be further refined and used as a chemical. Moreover, metals are liberated during thermal cracking and can be easily separated from the pyrolysis char, amounting to roughly 5% in mass. Lastly, pyrolysis can be a good starting point from a “waste-to-chemicals” perspective, but further research should be done with a focus on oil and gas refining, in order both to make products suitable for the chemical industry and to render the whole recycling process economically feasible.

Alessandro Santini; Fabrizio Passarini; Ivano Vassura; David Serrano; Javier Dufour; Luciano Morselli

2012-01-01T23:59:59.000Z

243

Predicting protein residue–residue contacts using deep networks and boosting  

Science Journals Connector (OSTI)

......structure prediction, protein residue-residue contacts...i.e. homologous proteins with known structure...train large boosted ensembles of DN classifiers achieving...advanced search of the Protein Data Bank filtering...contained fewer than 20% disordered residues (i.e. coordinates......

Jesse Eickholt; Jianlin Cheng

2012-12-01T23:59:59.000Z

244

Seismic Travel-Time Residuals and Plates  

Science Journals Connector (OSTI)

......United States, Canada and Greenland under the auspices of Project Vela Uniform (Long Range Seismic Measurements 1966). Arrival...1 that if we plot residuals on the focal sphere, we are at liberty to ascribe these residuals to source effects, receiver effects......

D. Davies; D. P. McKenzie

1969-09-01T23:59:59.000Z

245

On the Feasibility of Eddy Current Characterization of the Near-Surface Residual Stress Distribution in Nickel-Base Superalloys  

SciTech Connect (OSTI)

In light of its frequency-dependent penetration depth, the measurement of eddy current conductivity has been suggested as a possible means to allow the nondestructive evaluation of subsurface residual stresses in shot-peened specimens. This technique is based on the so-called electroelastic effect, i.e., the stress-dependence of the electrical conductivity. Unfortunately, the relatively small ({approx}1%) change in electrical conductivity caused by the presence of compressive residual stresses is often distorted, or even completely overshadowed, by the accompanying conductivity loss caused by cold work and surface roughness effects. Recently, it was observed that, in contrast with most other materials, shot-peened Waspaloy and IN100 specimens exhibit an apparent increase in electrical conductivity at increasing inspection frequencies. This observation by itself indicates that in these materials the measured conductivity change is probably dominated by residual stress effects, since both surface roughness and increased dislocation density are known to decrease rather than increase the conductivity and the presence of crystallographic texture does not affect the electrical conductivity of these materials, which crystallize in cubic symmetry. Our preliminary experiments indicate that probably there exists a unique 'window of opportunity' for eddy current NDE in nickel-base superalloys. We identified five major effects that contribute to this fortunate constellation of material properties, which will be reviewed in this presentation.

Blodgett, Mark P. [Metals, Ceramics, and NDE Division, AFRL, Wright-Patterson Air Force Base, Dayton, Ohio 45433-7817 (United States); Nagy, Peter B. [Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, Ohio 45221-0070 (United States)

2004-02-26T23:59:59.000Z

246

Rough Set Based Information Retrieval from Argumentative Data Points in Sea Woo Kim*, Chin-Wan Chung  

E-Print Network [OSTI]

Rough Set Based Information Retrieval from Argumentative Data Points in Weblogs Sea Woo Kim*, Chin as an object oriented 3- Dimensional system. The goal of our approach is to generate rules from rough sets and to represent them in a 3-dimensional interactive program, Blog Cosmos. We used rough set theory as a candidate

Chung, Chin-Wan

247

The theory of rough sets, introduced by Pawlak in 1982, has recently emerged as a major mathe-  

E-Print Network [OSTI]

Preface The theory of rough sets, introduced by Pawlak in 1982, has recently emerged as a major. The focus of rough set theory is on the ambi- guity caused by limited discernibility of objects, rough set theory and granular computation has proven to be another soft com- puting tool which

Pal, Sankar Kumar

248

IEEE TRANSACTIONS ON FUZZY SYSTEMS, VOL. 15, NO. 1, FEBRUARY 2007 121 Fuzzy Rough Sets: The Forgotten Step  

E-Print Network [OSTI]

IEEE TRANSACTIONS ON FUZZY SYSTEMS, VOL. 15, NO. 1, FEBRUARY 2007 121 Fuzzy Rough Sets: The Forgotten Step Martine De Cock, Chris Cornelis, and Etienne E. Kerre Abstract--Traditional rough set theory-equivalence relation. However, none of the existing studies on fuzzy rough set theory tries to exploit the fact

Gent, Universiteit

249

On Sea Surface Roughness Parameterization and Its Effect on Tropical Cyclone Structure and Intensity  

E-Print Network [OSTI]

On Sea Surface Roughness Parameterization and Its Effect on Tropical Cyclone Structure and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI 96822 Yihong Duan National 10, 2009 (Revised) Dateline Revised for Advances in Atmospheric Sciences Corresponding author

Wang, Yuqing

250

Application of fuzzy SOFM neural network and rough set theory on fault diagnosis for rotating machinery  

Science Journals Connector (OSTI)

This paper presents a new method that applies fuzzy logic, rough set theory and SOFM neural network to rotating machinery fault diagnosis. In this method, firstly, relationships between the fault causations and fault symptoms are established by fuzzy ...

Dongxiang Jiang; Kai Li; Gang Zhao; Jinhui Diao

2005-05-01T23:59:59.000Z

251

Using support vector machines and rough sets theory for classifying faulty types of diesel engine  

Science Journals Connector (OSTI)

Support vector machines (SVM) and rough sets theory (RST) are two emerging techniques in data analysis. The RST can deal with vague data and remove redundant attributes without losing any information of the data; and SVM has powerful classification ability. ...

Ping-Feng Pai; Yu-Ying Huang

2007-08-01T23:59:59.000Z

252

Improved Global Bathymetry, Global Sea Floor Roughness, and Deep Ocean Mixing  

E-Print Network [OSTI]

substantial kinetic energy in the M2 tide and a rough seaenergy of M2 tide .75integrated kinetic energy of the M 2 tide (J/m 2 ) Figure 4-

Becker, Joseph J

2008-01-01T23:59:59.000Z

253

Improved global bathymetry, global sea floor roughness, and deep ocean mixing  

E-Print Network [OSTI]

substantial kinetic energy in the M2 tide and a rough seaenergy of M2 tide .75integrated kinetic energy of the M 2 tide (J/m 2 ) Figure 4-

Becker, Joseph Jeffrey

2008-01-01T23:59:59.000Z

254

Reduction of vortex induced forces and motion through surface roughness control  

DOE Patents [OSTI]

Roughness is added to the surface of a bluff body in a relative motion with respect to a fluid. The amount, size, and distribution of roughness on the body surface is controlled passively or actively to modify the flow around the body and subsequently the Vortex Induced Forces and Motion (VIFM). The added roughness, when designed and implemented appropriately, affects in a predetermined way the boundary layer, the separation of the boundary layer, the level of turbulence, the wake, the drag and lift forces, and consequently the Vortex Induced Motion (VIM), and the fluid-structure interaction. The goal of surface roughness control is to decrease/suppress Vortex Induced Forces and Motion. Suppression is required when fluid-structure interaction becomes destructive as in VIM of flexible cylinders or rigid cylinders on elastic support, such as underwater pipelines, marine risers, tubes in heat exchangers, nuclear fuel rods, cooling towers, SPAR offshore platforms.

Bernitsas, Michael M; Raghavan, Kamaldev

2014-04-01T23:59:59.000Z

255

Comprehensive Evaluation Model of Building Energy Efficiency Based on Rough Sets Theory  

E-Print Network [OSTI]

In order to improve the objectivity of building energy efficiency evaluation, this paper uses a new method to evaluate building energy efficiency on the basis of rough sets theory. The contribution of different subentry evaluation indicators...

Ding, L.; Ruan, X.; Huang, J.; Li, Y.

2006-01-01T23:59:59.000Z

256

Fuzzy Set Extensions of the Dominance-Based Rough Set Approach  

Science Journals Connector (OSTI)

Rough set theory has been proposed by Pawlak in ... operates on an information table composed of a set U of objects described by a set Q of condition and decision attributes. Decision attributes make a partition ...

Salvatore Greco; Benedetto Matarazzo…

2008-01-01T23:59:59.000Z

257

Comparative Study on Mathematical Foundations of Type-2 Fuzzy Set, Rough Set and Cloud Model  

Science Journals Connector (OSTI)

Mathematical representation of a concept with uncertainty is one of foundations of Artificial Intelligence. The type-2 fuzzy set introduced by Mendel studies fuzziness of the membership grade of a concept. Rough

Deyi Li

2010-01-01T23:59:59.000Z

258

Wind Speed Retrieval Based on Sea Surface Roughness Measurements from Spaceborne Microwave Radiometers  

Science Journals Connector (OSTI)

Wind speed is the main factor responsible for the increase in ocean thermal emission because sea surface emissivity strongly depends on surface roughness. An alternative approach to estimate the surface wind speed (SWS) as a function of surface ...

Sungwook Hong; Inchul Shin

2013-02-01T23:59:59.000Z

259

Estimation of sector roughness lengths and the effect on prediction of the vertical wind speed profile  

Science Journals Connector (OSTI)

An estimate of roughness length is required by some atmospheric models and is also used in the logarithmic profile to determine the increase of wind speed with height under neutral conditions. The choice ... thei...

R. J. Barthelmie; J. P. Palutikof; T. D. Davies

1993-10-01T23:59:59.000Z

260

Enhancement of induced V polarization due to rough interfaces in polycrystalline V/Fe/V trilayers  

E-Print Network [OSTI]

, and polarized neutron reflectometry. Trilayer samples were sputter deposited onto Si substrates at room with the neutron and resonant x-ray data. Notably, this value for structurally rough interfaces is significantly

Haskel, Daniel

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Roughness-induced Transient Growth: Continuous-spectrum Receptivity and Secondary Instability Analysis  

E-Print Network [OSTI]

] investigated the boundary layer response to an array of roughness elements that were both repeatable and of significant size. He arranged an array of spheres on a flat plate and contrasted results with single spheres and multi-sphere arrays. These spheres....S., Case Western Reserve University Chair of Advisory Committee: Dr. Edward White This dissertation analyzes the effect of periodic roughness elements on the stability of a flat plate boundary layer. Receptivity data is extracted from direct numerical...

Denissen, Nicholas Allen

2012-07-16T23:59:59.000Z

262

Mapping Residual Structure in Intrinsically Disordered Proteins at Residue Resolution Using Millisecond Hydrogen/Deuterium Exchange and Residue Averaging  

Science Journals Connector (OSTI)

Measurement of residual structure in intrinsically disordered proteins can provide insights into the mechanisms by which such proteins undergo coupled binding and folding. The present ... describes an approach to...

Theodore R. Keppel; David D. Weis

2014-12-01T23:59:59.000Z

263

Modeling shallow?water propagation with an appropriate sea?surface roughness spectrum  

Science Journals Connector (OSTI)

Predictions for shallow?water acoustic propagation are usually accomplished assuming a deep?water spectrum for the sea surface roughness. In addition the effect of surface roughness is normally included through a loss mechanism. However for waveguide propagation the surface roughness mainly causes a redistribution of energy and therefore the use of an accurate model to handle roughness is essential to obtaining accurate results. In order to properly model shallow?water surface roughness the parametric spectrum GONO [Sanders and Bruinsma Wave Dynamics and Radio Probing of the Ocean Surface edited by O. M. Phillips and K. Hassemann (Plenum New York 1986) pp. 615–637] has been implemented. This spectrum is appropriate for wind?driven surfaces in waters ranging in depth from 15 to 100 m. To investigate the impact that different spectra has on the propagating field predictions using GONO and Pierson–Moskowitz spectra are compared for different environments and at frequencies typical of active and passive sonars. An acoustic propagationmodel which includes a conformal mapping algorithm to properly handle sea surface roughness [Norton et al. J. Acoust. Soc. Am. 97 2173–2180 (1995)] is used to generate the numerical results. [Work supported by ONR.

Guy V. Norton; Jorge C. Novarini

1996-01-01T23:59:59.000Z

264

Predicting residual stresses in gas turbine components  

Science Journals Connector (OSTI)

This article describes work carried out by a major aircraft-engine builder and one of its suppliers to validate the numerical prediction of heat-treatment-induced residual stresses. For verification, the proje...

R. A. Wallis Ph.D.; I. W. Craighead B.Sc. Eng.

1995-10-01T23:59:59.000Z

265

SAR impulse response with residual chirps.  

SciTech Connect (OSTI)

A Linear Frequency-Modulated (LFM) chirp is a function with unit amplitude and quadratic phase characteristic. In a focused Synthetic Aperture Radar (SAR) image, a residual chirp is undesired for targets of interest, as it coarsens the manifested resolution. However, for undesired spurious signals, a residual chirp is often advantageous because it spreads the energy and thereby diminishes its peak value. In either case, a good understanding of the effects of a residual LFM chirp on a SAR Impulse Response (IPR) is required to facilitate system analysis and design. This report presents an analysis of the effects of a residual chirp on the IPR. As reference, there is a rich body of publications on various aspects of LFM chirps. A quick search reveals a plethora of articles, going back to the early 1950s. We mention here purely as trivia one of the earlier analysis papers on this waveform by Klauder, et al.

Doerry, Armin Walter

2009-06-01T23:59:59.000Z

266

Mechanisms of hydrocracking of heavy oil residues  

Science Journals Connector (OSTI)

Based on research data, a technology of low-pressure residual fuel oil hydrocracking with a suspended catalyst has been developed. The process has been refined on a laboratory setup. The reaction kinetics has ...

Kh. I. Abad-zade; F. M. Velieva…

2009-07-01T23:59:59.000Z

267

Residual stress in nanocrystalline nickel tungsten electrodeposits  

E-Print Network [OSTI]

Characterizing the residual stress of thick nanocrystalline electrodeposits poses several unique challenges due to their fine grain structure, thickness distribution, and matte surface. We employ a three-dimensional ...

Ziebell, Tiffany D. (Tiffany Dawn)

2011-01-01T23:59:59.000Z

268

ABSTRACT: Bioenergy Harvesting Technologies to Supply Crop Residues...  

Broader source: Energy.gov (indexed) [DOE]

ABSTRACT: Bioenergy Harvesting Technologies to Supply Crop Residues In a Densified Large Square Bale Format ABSTRACT: Bioenergy Harvesting Technologies to Supply Crop Residues In a...

269

Automatic determination about precision parameter value based on inclusion degree with variable precision rough set model  

Science Journals Connector (OSTI)

Abstract The rough set theory provides a powerful approach for attributes reduction and data analysis. The variable precision rough set (VPRS) model, an extension of the original rough set approach, tolerates misclassifications of the training data to some degree, which promotes the applications of rough set theory in inconsistent information systems. However, in most existing algorithms of feature reduction based on VPRS, the precision parameter (?) is introduced as prior knowledge, which restricts their applications because it is not clear how to set the ? value. By studying ?-consistency in the measurement of a decision table and the threshold value of the ?-consistent decision table, this paper presents an algorithm for automatic determination of the precision parameter value from a decision table based on VPRS. At the same time, the precision parameter value from our proposed method is compared with the thresholds from the decision-theoretic rough set (DTRS). The influences of the precision parameter are also discussed on attribute reduction, which shows the necessity of the estimated precision parameter from a decision table. The simulation results including VPRS and other classification methods in real data further indicate that different precision parameter values make a great difference on rules and setting a precise parameter near the threshold value of the ?-consistent decision table can precisely reflect the decision distribution of the decision table.

Yusheng Cheng; Wenfa Zhan; Xindong Wu; Yuzhou Zhang

2015-01-01T23:59:59.000Z

270

Residual turbulence from velocity shear stabilized interchange instabilities  

SciTech Connect (OSTI)

The stabilizing effect of velocity shear on the macroscopic, broad bandwidth, ideal interchange instability is studied in linear and nonlinear regimes. A 2D dissipative magnetohydrodynamic (MHD) code is employed to simulate the system. For a given flow shear, V Prime , linear growth rates are shown to be suppressed to below the shear-free level at both the small and large wavelengths. With increasing V Prime , the unstable band in wavenumber-space shrinks so that the peak growth results for modes that correspond to relatively high wavenumbers, on the scale of the density gradient. In the nonlinear turbulent steady state, a similar turbulent spectrum obtains, and the convection cells are roughly circular. In addition, the density fluctuation level and the degree of flattening of the initial inverted density profile are found to decrease as V Prime increases; in fact, unstable modes are almost completely stabilized and the density profile reverts to laminar when V Prime is a few times the classic interchange growth rate. Moreover, the turbulent particle flux diminishes with increasing velocity shear such that all the flux is carried by the classical diffusive flux in the asymptotic limit. The simulations are compared with measurements of magnetic fluctuations from the Maryland Centrifugal Experiment, MCX, which investigated interchange modes in the presence of velocity shear. The experimental spectral data, taken in the plasma edge, are in general agreement with the numerical data obtained in higher viscosity simulations for which the level of viscosity is chosen consistent with MCX Reynolds numbers at the edge. In particular, the residual turbulence in both cases is dominated by elongated convection cells. Finally, concomitant Kelvin-Helmholtz instabilities in the system are also examined. Complete stability to interchanges is obtained only in the parameter space wherein the generalized Rayleigh inflexion theorem is satisfied.

Hung, C. P.; Hassam, A. B. [University of Maryland at College Park, College Park, Maryland 20742 (United States)

2013-01-15T23:59:59.000Z

271

Disposal of Rocky Flats residues as waste  

SciTech Connect (OSTI)

Work is underway at the Rocky Flats Plant to evaluate alternatives for the removal of a large inventory of plutonium-contaminated residues from the plant. One alternative under consideration is to package the residues as transuranic wastes for ultimate shipment to the Waste Isolation Pilot Plant. Current waste acceptance criteria and transportation regulations require that approximately 1000 cubic yards of residues be repackaged to produce over 20,000 cubic yards of WIPP certified waste. The major regulatory drivers leading to this increase in waste volume are the fissile gram equivalent, surface radiation dose rate, and thermal power limits. In the interest of waste minimization, analyses have been conducted to determine, for each residue type, the controlling criterion leading to the volume increase, the impact of relaxing that criterion on subsequent waste volume, and the means by which rules changes may be implemented. The results of this study have identified the most appropriate changes to be proposed in regulatory requirements in order to minimize the costs of disposing of Rocky Flats residues as transuranic wastes.

Dustin, D.F.; Sendelweck, V.S. [EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant; Rivera, M.A. [Lamb Associates, Inc., Rockville, MD (United States)

1993-03-01T23:59:59.000Z

272

Disposal of Rocky Flats residues as waste  

SciTech Connect (OSTI)

Work is underway at the Rocky Flats Plant to evaluate alternatives for the removal of a large inventory of plutonium-contaminated residues from the plant. One alternative under consideration is to package the residues as transuranic wastes for ultimate shipment to the Waste Isolation Pilot Plant. Current waste acceptance criteria and transportation regulations require that approximately 1000 cubic yards of residues be repackaged to produce over 20,000 cubic yards of WIPP certified waste. The major regulatory drivers leading to this increase in waste volume are the fissile gram equivalent, surface radiation dose rate, and thermal power limits. In the interest of waste minimization, analyses have been conducted to determine, for each residue type, the controlling criterion leading to the volume increase, the impact of relaxing that criterion on subsequent waste volume, and the means by which rules changes may be implemented. The results of this study have identified the most appropriate changes to be proposed in regulatory requirements in order to minimize the costs of disposing of Rocky Flats residues as transuranic wastes.

Dustin, D.F.; Sendelweck, V.S. (EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant); Rivera, M.A. (Lamb Associates, Inc., Rockville, MD (United States))

1993-01-01T23:59:59.000Z

273

Fluid flow at the interface between elastic solids with randomly rough surfaces  

E-Print Network [OSTI]

I study fluid flow at the interface between elastic solids with randomly rough surfaces. I use the contact mechanics model of Persson to take into account the elastic interaction between the solid walls and the Bruggeman effective medium theory to account for the influence of the disorder on the fluid flow. I calculate the flow tensor which determines the pressure flow factor and, e.g., the leak-rate of static seals. I show how the perturbation treatment of Tripp can be extended to arbitrary order in the ratio between the root-mean-square roughness amplitude and the average interfacial surface separation. I introduce a matrix D(Zeta), determined by the surface roughness power spectrum, which can be used to describe the anisotropy of the surface at any magnification Zeta. I present results for the asymmetry factor Gamma(Zeta) (generalized Peklenik number) for grinded steel and sandblasted PMMA surfaces.

B. N. J. Persson

2010-04-07T23:59:59.000Z

274

Validity of the thin mask approximation in extreme ultraviolet mask roughness simulations  

SciTech Connect (OSTI)

In the case of extreme ultraviolet (EUV) lithography, modeling has shown that reflector phase roughness on the lithographic mask is a significant concern due to the image plan speckle it causes and the resulting line-edge roughness on imaged features. Modeling results have recently been used to determine the requirements for future production worthy masks yielding the extremely stringent specification of 50 pm rms roughness. Owing to the scale of the problem in terms of memory requirements, past modeling results have all been based on the thin mask approximation. EUV masks, however, are inherently three dimensional in nature and thus the question arises as to the validity of the thin mask approximation. Here we directly compare image plane speckle calculation results using the fast two dimensional thin mask model to rigorous finite-difference time-domain results and find the two methods to be comparable.

Naulleau, Patrick; George, Simi

2011-01-26T23:59:59.000Z

275

The friction factor of two-dimensional rough-boundary turbulent soap film flows  

E-Print Network [OSTI]

We use momentum transfer arguments to predict the friction factor $f$ in two-dimensional turbulent soap-film flows with rough boundaries (an analogue of three-dimensional pipe flow) as a function of Reynolds number Re and roughness $r$, considering separately the inverse energy cascade and the forward enstrophy cascade. At intermediate Re, we predict a Blasius-like friction factor scaling of $f\\propto\\textrm{Re}^{-1/2}$ in flows dominated by the enstrophy cascade, distinct from the energy cascade scaling of $\\textrm{Re}^{-1/4}$. For large Re, $f \\sim r$ in the enstrophy-dominated case. We use conformal map techniques to perform direct numerical simulations that are in satisfactory agreement with theory, and exhibit data collapse scaling of roughness-induced criticality, previously shown to arise in the 3D pipe data of Nikuradse.

Nicholas Guttenberg; Nigel Goldenfeld

2008-08-11T23:59:59.000Z

276

A decision making model using soft set and rough set on fuzzy approximation spaces  

Science Journals Connector (OSTI)

In modern era of computing, there is a need of development in data analysis and decision making. Most of our tools are crisp, deterministic and precise in character. But general real life situations contains uncertainties. To handle such uncertainties many theories are developed such as fuzzy set, rough set, rough set on fuzzy approximation spaces etc. But all these theories have their own limitations. To overcome the limitations, the concept of soft set is introduced. But, soft set also fails if the attributes in the information system are almost identical rather exactly identical. In this paper, we propose a decision making model that consists of two processes such as preprocess and postprocess to mine decisions. In preprocess we use rough set on fuzzy approximation spaces to get the almost equivalence classes whereas in postprocess we use soft set techniques to obtain decisions. The proposed model is tested over an institutional dataset and the results show practical viability of the proposed research.

T.K. Das; D.P. Acharjya

2014-01-01T23:59:59.000Z

277

Enhancement of induced V polarization due to rough interfaces in polycrystalline V/Fe/V trilayers  

SciTech Connect (OSTI)

The effect of interface roughness on the induced polarization of V in polycrystalline V/Fe/V trilayers was investigated with x-ray magnetic circular dichroism, x-ray resonant magnetic scattering, and polarized neutron reflectometry. Trilayer samples were sputter deposited onto Si substrates at room temperature to minimize interdiffusion. The films were polycrystalline and exhibited an average 0.5 nm root-mean-square interfacial roughness at the Fe/V interfaces. The induced polarization found in V was constrained to the Fe/V interface extending approximately up to 2-3 monolayers into the V and exhibited antiferromagnetic alignment to the Fe layer. A magnetic moment for V ranging between -0.46 and -0.86 {micro}{sub B}/V atom is consistent with the neutron and resonant x-ray data. Notably, this value for structurally rough interfaces is significantly larger than that reported for samples with atomically flat Fe/V interfaces.

Clavero, C.; Sanchez-Hanke, C.; Skuza, R.; Choi,Y.; Loloee,R.; Zhernenkov, M.; Fitzsimmons, M.R.; Lukaszew, R.A

2009-07-20T23:59:59.000Z

278

Interfacial separation between elastic solids with randomly rough surfaces: comparison of experiment with theory  

E-Print Network [OSTI]

We study the average separation between an elastic solid and a hard solid with a nominal flat but randomly rough surface, as a function of the squeezing pressure. We present experimental results for a silicon rubber (PDMS) block with a flat surface squeezed against an asphalt road surface. The theory shows that an effective repulse pressure act between the surfaces of the form p proportional to exp(-u/u0), where u is the average separation between the surfaces and u0 a constant of order the root-mean-square roughness, in good agreement with the experimental results.

B. Lorenz; B. N. J. Persson

2008-10-06T23:59:59.000Z

279

On the Compliance of Simbol-X Mirror Roughness with its Effective Area Requirements  

SciTech Connect (OSTI)

Surface microroughness of X-ray mirrors is a key issue for the angular resolution of Simbol-X to comply with the required one (<20 arcsec at 30 keV). The maximum tolerable microroughness for Simbol-X mirrors, in order to satisfy the required imaging capability, has already been derived in terms of its PSD (Power Spectral Density). However, also the Effective Area of the telescope is affected by the mirror roughness. In this work we will show how the expected effective area of the Simbol-X mirror module can be computed from the roughness PSD tolerance, checking its compliance with the requirements.

Spiga, D.; Basso, S.; Cotroneo, V.; Pareschi, G.; Tagliaferri, G. [INAF/Osservatorio Astronomico di Brera-Via Bianchi 46-23807 Merate (Italy)

2009-05-11T23:59:59.000Z

280

Investigation of wall friction in noncircular ducts with a rough liner  

E-Print Network [OSTI]

phenomena in circular rough ducts and. these test data are discussed. 2. The test data of this research are similar to that shown by Nikuradse for fluid flow in pipes having artifi- cially roughened, inside surfaces. It is doubtful if Golebrook... in the relative roughness of the duct. The curves of Reynolds number versus friction factor are somewhat similar to those plotted by Nikuradse for fluid flow in artificially roughened round pipe. The shape of the curves is quite similar, but there is a...

Tyler, John Charles

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Unsupervised feature selection in digital mammogram image using rough set theory  

Science Journals Connector (OSTI)

Feature Selection (FS) is a process which attempts to select features which are more informative. In this paper, a novel unsupervised FS in mammogram images, using rough set-based relative dependency measures, is proposed. A typical mammogram image processing system generally consists of mammogram image acquisition, pre-processing of image, segmentation and features extraction from the segmented mammogram image. The proposed unsupervised FS method is used to select features from data sets; the method is compared with existing rough set based supervised FS methods, and the classification performance of both methods are recorded and demonstrate the efficiency of this method.

K. Thangavel; C. Velayutham

2012-01-01T23:59:59.000Z

282

DEVELOPMENT OF A SUPPLEMENTAL RESIDUAL CONTAMINATION GUIDELINE  

Office of Legacy Management (LM)

DEVELOPMENT OF A SUPPLEMENTAL RESIDUAL CONTAMINATION GUIDELINE DEVELOPMENT OF A SUPPLEMENTAL RESIDUAL CONTAMINATION GUIDELINE FOR THE NFSS CENTRAL DRAINAGE DITCH DECEMBER 1986 Prepared for UNITED STATES DEPARTMENT OF ENERGY OAK RIDGE OPERATIONS OFFICE Under Contract No. DE-AC05-81OR20722 By Bechtel National, Inc. Oak Ridge, Tennessee Bechtel Job No. 14501 I 1.0 INTRODUCTION AND SUMMARY 1.1 OBJECTIVE AND SCOPE The objective of this report is to describe the methodology used for establishing a supplemental residual contamination guideline for the NFSS vicinity property known as the Central Drainage Ditch (CDD). Supplemental guidelines may exceed authorized guidelines if the resultant dose will not exceed the DOE radiation protection standard of 100 mrem/yr (Ref. 1). This evaluation is based on realistic exposure pathways that were

283

Minimal Residual Disease in Chronic Myeloid Leukemia  

Science Journals Connector (OSTI)

...treatment with chemotherapy. In a hematologic complete remission, we know that a large portion of the leukemic cells remain out of sight. These cells, invisible to the microscopist, are the components of an important clinical problem termed "minimal residual disease." The concept of minimal residual disease... For many years hematologists have used the microscope to identify a complete remission of leukemia after treatment with chemotherapy. In a hematologic complete remission, we know that a large portion of the leukemic cells remain out of sight. These cells, ...

Löwenberg B.

2003-10-09T23:59:59.000Z

284

Y.Y. Yao, Three-way decisions with probabilistic rough sets, Information Sciences, Vol. 180, No. 3, pp. 341-353, 2010.  

E-Print Network [OSTI]

model. The results enrich the rough set theory by ideas from Bayesian decision theory and hypothesis of incorrect decisions make the rough set theory practical in applications. Key words: Decision-theoretic roughY.Y. Yao, Three-way decisions with probabilistic rough sets, Information Sciences, Vol. 180, No. 3

Yao, Yiyu

285

FRICTION FACTOR IN HIGH PRESSURE NATURAL GAS PIPELINES FROM ROUGHNESS MEASUREMENTS  

E-Print Network [OSTI]

FRICTION FACTOR IN HIGH PRESSURE NATURAL GAS PIPELINES FROM ROUGHNESS MEASUREMENTS DETERMINATION DU and Technology, Norway ABSTRACT Pressure drop experiments on natural gas flow at 80 to 120 bar pressure and high of natural gas at typical operating pressures (100-180 bar). At such Reynolds numbers the classical Colebrook

Gudmundsson, Jon Steinar

286

Rough Set Dependency Analysis in Evaluation Studies An Application in the Study of Repeated Heart Attacks  

E-Print Network [OSTI]

of repeated heart attacks. 1 Introduction In many cases it is not possible to obtain complete ­ or certain analysis can be applied to an investi- gation into the causes of repeated heart attacks con- ductedRough Set Dependency Analysis in Evaluation Studies ­ An Application in the Study of Repeated Heart

Düntsch, Ivo

287

Numerical simulation of noise generated by multi asperity contact between rough surfaces  

E-Print Network [OSTI]

. The validation of the method is then discussed by comparison with the finite element software Abaqus and someNumerical simulation of noise generated by multi asperity contact between rough surfaces V.H. Dang at the interface that convert a part of the kinetic energy of the sliding solid into acoustical energy. 1

Paris-Sud XI, Université de

288

Application of an acoustic backscatter technique for characterizing the roughness of porous soil  

E-Print Network [OSTI]

allow the water from rainfall to pool. Much work has been done to examine the effects of roughness to erosion control of agricultural sur- faces since it impedes water run-off. If a fallow agricultural field on soil erosion.1­4 For soil conservation use it is important to have the ability to rapidly quantify

Illinois at Urbana-Champaign, University of

289

Safety First Safety Last Safety Always Roughly one out of every four accidents (25%) involves  

E-Print Network [OSTI]

Safety First Safety Last Safety Always Roughly one out of every four accidents (25%) involves at an unsafe speed · Failure to check mirrors often Fleet Safety: Backing Accidents Safety Tip #2 Accidents hurt-- safety doesn't. All backing accidents are preventable. The key is to plan ahead to avoid backing

Minnesota, University of

290

Experimental study on flow and ventilation behaviours over idealised urban roughness  

Science Journals Connector (OSTI)

Flows in the urban boundary layer (UBL) are strongly affected by the inhomogeneous roughness elements at the bottom surface. In particular, in the near-ground region (roughness sublayer), the effect of the surface roughness dominates that complicates the behaviours of mean flow and turbulence and subsequently the near-wall transport processes. To safeguard the health of urban inhabitants, it is crucial to develop an in-depth understanding of the correlation among near-wall fluid motions, UBL turbulence and city ventilation. However, rather limited information is available. In this study, physical modelling in a laboratory wind tunnel is employed to measure the profiles of both stream-wise and vertical velocities over an array consisting of idealised two-dimensional (2D) roughness elements. Various arrangements are adopted in attempt to cover different flow regimes to examine city ventilation problems. The ventilation performance is measured by the air exchange rate (ACH). Consistent with our previous large-eddy simulation (LES) results, the current wind tunnel measurements suggest that city ventilation is dominated by the ACH turbulent component, i.e., air masses are mainly driven by atmospheric turbulence (at least 80% of the total ACH).

Yat-Kiu Ho; Chun-Ho Liu

2014-01-01T23:59:59.000Z

291

Entropy of English text: Experiments with humans and a machine learning system based on rough sets  

E-Print Network [OSTI]

different types of text material (Shannon used only a single book). We also show how the results are affected when we replace the human subjects with a machine learning system based on rough sets. Automating the play of the guessing game with this system...

Moradi, H.; Grzymala-Busse, Jerzy W.; Roberts, James A.

1998-01-01T23:59:59.000Z

292

Geometrical and transport properties of single fractures: influence of the roughness of the fracture  

E-Print Network [OSTI]

Geometrical and transport properties of single fractures: influence of the roughness of the fracture walls H. Auradou Univ Pierre et Marie Curie-Paris6, Univ Paris-Sud, CNRS, F-91405. Lab FAST, Bat reviews the main features of the transport properties of single fractures. A particular attention paid

Paris-Sud XI, Université de

293

Patch dynamics and stability in steep, rough streams E. M. Yager,1  

E-Print Network [OSTI]

Patch dynamics and stability in steep, rough streams E. M. Yager,1 W. E. Dietrich,2 J. W. Kirchner boulders and more mobile patches of gravel and cobbles. Little is known about how variability in flow and sediment flux affect the area, thickness, composition, and grain mobility of sediment patches. To better

Kirchner, James W.

294

Evaluation of bedload transport predictions using flow resistance equations to account for macro-roughness in  

E-Print Network [OSTI]

August 2011. [1] Steep mountain streams typically feature macro-roughness elements like boulders, step measured annually, and for the other seven streams sediment volume estimates were available for large flood during floods is a frequent natural haz- ard. Using data from the Swiss flood and landslide damage

Kirchner, James W.

295

Atmospheric Momentum Roughness Applied to Stage-Discharge Relationships in Flood Plains  

E-Print Network [OSTI]

­Weisbach formula is modified to account for vegetative resistance by application of surface roughness lengths appropriate friction factors. Schlicting 1955 reviews the relationship between the Ni- kuradsse's equivalent 1996 developed and calibrated procedures to estimate flow resistance based on the Colebrook

296

Department of Chemistry, University of California, Berkeley, CA 94720 Finding transition pathways: throwing ropes over rough  

E-Print Network [OSTI]

rugged line indicates the roughness that generally characterizes the potential energy surface of a high pass between the stable states, the resulting transmission coefficient would be very small, and its a plateau value that is very small compared to , so small that the computation is a nearly impractical route

Chandler, David

297

Chemical Stabilization of Hanford Tank Residual Waste  

SciTech Connect (OSTI)

Three different chemical treatment methods were tested for their ability to stabilize residual waste from Hanford tank C-202 for reducing contaminant release (Tc, Cr, and U in particular). The three treatment methods tested were lime addition [Ca(OH)2], an in-situ Ceramicrete waste form based on chemically bonded phosphate ceramics, and a ferrous iron/goethite treatment. These approaches rely on formation of insoluble forms of the contaminants of concern (lime addition and ceramicrete) and chemical reduction followed by co-precipitation (ferrous iron/goethite incorporation treatment). The results have demonstrated that release of the three most significant mobile contaminants of concern from tank residual wastes can be dramatically reduced after treatment compared to contact with simulated grout porewater without treatment. For uranium, all three treatments methods reduced the leachable uranium concentrations by well over three orders of magnitude. In the case of uranium and technetium, released concentrations were well below their respective MCLs for the wastes tested. For tank C-202 residual waste, chromium release concentrations were above the MCL but were considerably reduced relative to untreated tank waste. This innovative approach has the potential to revolutionize Hanford’s tank retrieval process, by allowing larger volumes of residual waste to be left in tanks while providing an acceptably low level of risk with respect to contaminant release that is protective of the environment and human health. Such an approach could enable DOE to realize significant cost savings through streamlined retrieval and closure operations.

Cantrell, Kirk J.; Um, Wooyong; Williams, Benjamin D.; Bowden, Mark E.; Gartman, Brandy N.; Lukens, Wayne W.; Buck, Edgar C.; Mausolf, Edward J.

2014-03-01T23:59:59.000Z

298

Automatic Methods for Predicting Functionally Important Residues  

E-Print Network [OSTI]

Pazos and Alfonso Valencia* Protein Design Group National Center for Biotechnology, Cantoblanco Madrid of protein families into subfamilies in the search for those positions that could have some functional families, testing the statistical meaning of the Tree-determinant residues predicted by three different

Pazos, Florencio

299

Residual Stresses in Weldments by Neutron Diffraction  

E-Print Network [OSTI]

Residual Stresses in Weldments by Neutron Diffraction Shanmukha Rao M, Jon James, Shirley Northover :- The neutron diffraction is determined from Bragg's law. When neutron propagate through crystal sample, Coherent, Incoherent and Absorption Scattering phenomena take place Weld MaterialsPlate materials Stress

Bandara, Arosha

300

Specific Nucleoprotein Residues Affect Influenza Virus Morphology  

Science Journals Connector (OSTI)

...these residues to the crystal structure of NP, we...in the production of spherical virions, as indicated...WSN-AichiM1 virus. (A) Crystal structure of NP highlighting...M1 to form straight or bent elongated ribbons and...filamentous virions to spherical ones. We anticipate...

Kristy M. Bialas; Kendra A. Bussey; Raychel L. Stone; Toru Takimoto

2013-12-11T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

E-Print Network 3.0 - automotive shredder residue Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

residue Search Powered by Explorit Topic List Advanced Search Sample search results for: automotive shredder residue...

302

E-Print Network 3.0 - automotive shredder residues Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

residues Search Powered by Explorit Topic List Advanced Search Sample search results for: automotive shredder residues...

303

Immobilization of Rocky Flats Graphite Fines Residues  

SciTech Connect (OSTI)

The Savannah River Technology Center (SRTC) is developing an immobilization process for graphite fines residues generated during nuclear materials production activities at the Rocky Flats Environmental Technology Site (Rocky Flats). The continued storage of this material has been identified as an item of concern. The residue was generated during the cleaning of graphite casting molds and potentially contains reactive plutonium metal. The average residue composition is 73 wt percent graphite, 15 wt percent calcium fluoride (CaF2), and 12 wt percent plutonium oxide (PuO2). Approximately 950 kilograms of this material are currently stored at Rocky Flats. The strategy of the immobilization process is to microencapsulate the residue by mixing with a sodium borosilicate (NBS) glass frit and heating at nominally 700 degrees C. The resulting waste form would be sent to the Waste Isolation Pilot Plant (WIPP) for disposal. Since the PuO2 concentration in the residue averages 12 wt percent, the immobilization process was required to meet the intent of safeguards termination criteria by limiting plutonium recoverability based on a test developed by Rocky Flats. The test required a plutonium recovery of less than 4 g/kg of waste form when a sample was leached using a nitric acid/CaF2 dissolution flowsheet. Immobilization experiments were performed using simulated graphite fines with cerium oxide (CeO2) as a surrogate for PuO2 and with actual graphite fines residues. Small-scale surrogate experiments demonstrated that a 4:1 frit to residue ratio was adequate to prevent recovery of greater than 4 g/kg of cerium from simulated waste forms. Additional experiments investigated the impact of varying concentrations of CaF2 and the temperature/heating time cycle on the cerium recovery. Optimal processing conditions developed during these experiments were subsequently demonstrated at full-scale with surrogate materials and on a smaller scale using actual graphite fines.In general, the recovery of cerium from the full-scale waste forms was higher than for smaller scale experiments. The presence of CaF2 also caused a dramatic increase in cerium recovery not seen in the small-scale experiments. However, the results from experiments with actual graphite fines were encouraging. A 4:1 frit to residue ratio, a temperature of 700 degrees C, and a 2 hr heating time produced waste forms with plutonium recoveries of 4 plus/minus 1 g/kg. With an increase in the frit to residue ratio, waste forms fabricated at this scale should meet the Rocky Flats product specification. The scale-up of the waste form fabrication process to nominally 3 kg is expected to require a 5:1 to 6:1 frit to residue ratio and maintaining the waste form centerline temperature at 700 degrees C for 2 hr.

Rudisill, T. S.

1998-11-06T23:59:59.000Z

304

Estimation of the aerodynamic roughness length in arid and semi-arid regions over the globe with the ERS scatterometer  

E-Print Network [OSTI]

Estimation of the aerodynamic roughness length in arid and semi-arid regions over the globe 2005. [1] Estimates of the aerodynamic roughness lengths z0 in arid and semi-arid regions: Prigent, C., I. Tegen, F. Aires, B. Marticorena, and M. Zribi (2005), Estimation of the aerodynamic

Aires, Filipe

305

Soft X-ray reflectometry applied to the evaluation of surface roughness variation during the deposition of thin films  

E-Print Network [OSTI]

1645 Soft X-ray reflectometry applied to the evaluation of surface roughness variation during). The surface roughness evolution was calculated as a function of thickness from the soft X-ray reflectance Abstracts 07.60H - 68.20 - 68.55 - 78.65 Introduction. Soft X-ray reflectometry (SXR) was introduced

Boyer, Edmond

306

X-ray resonant magnetic scattering from structurally and magnetically rough interfaces in multilayered systems. I. Specular reflectivity  

E-Print Network [OSTI]

X-ray resonant magnetic scattering from structurally and magnetically rough interfaces formulation of x-ray resonant magnetic scattering from rough surfaces and interfaces is given for specular/Fe multilayer. DOI: 10.1103/PhysRevB.68.224409 PACS number s : 75.70.Cn, 61.10.Kw I. INTRODUCTION X-ray

Haskel, Daniel

307

A weighted bee colony optimisation hybrid with rough set reduct algorithm for feature selection in the medical domain  

Science Journals Connector (OSTI)

Feature selection refers to the problem of selecting the set of most relevant features which produces the most predictive outcome. Rough set theory has been one of the most successful methods used for feature selection. However, this method is still not able to find the optimal subsets. This paper proposes a new feature selection method based on rough set theory hybrid with a weighted bee colony optimisation (WBCO) in an attempt to combat this. This proposed work is applied in the medical domain to find the minimal reducts and experimentally compared with the existing rough set methods, rough set methods with computational intelligence and non-rough set methods. The performance is analysed with a novel genetic algorithm-based k-nearest neighbour (GkNN) classifier. The experiments and results show that our proposed method could find optimum reducts than the other algorithms.

N. Suguna; K. Thanushkodi

2011-01-01T23:59:59.000Z

308

Chapter 8 - Coal Combustion Residue Disposal Options  

Science Journals Connector (OSTI)

Abstract Coal combustion residues (CCRs) are presently regulated as solid waste (Subtitle D) under the Resource Conservation Recovery Act. Such classification promotes beneficial use by end-users i.e. mitigating excessive liability. According to the US Environmental Protection agency (USEPA), about 131 million tons of coal combustion residuals—including 71 million tons of fly ash, 20 million tons of bottom ash and boiler slag, and 40 million tons of flue gas desulfurization (FGD) material—were generated in the US in 2007. Of this, approximately 36% was disposed of in landfills, 21% was disposed of in surface impoundments, 38% was beneficially reused, and 5% was used as minefill. Stringent regulation, as Subtitle C (hazardous waste), would impose a perceived liability upon end-users; greatly reducing beneficial use opportunities. Mandatory use of synthetic liners—would not have prevented dike wall failure and fails to consider inherent engineering characteristics of CCRs.

Richard W. Goodwin

2014-01-01T23:59:59.000Z

309

Thin layer chromatography residue applicator sampler  

DOE Patents [OSTI]

A thin layer chromatograph residue applicator sampler. The residue applicator sampler provides for rapid analysis of samples containing high explosives, chemical warfare, and other analyses of interest under field conditions. This satisfied the need for a field-deployable, small, hand-held, all-in-one device for efficient sampling, sample dissolution, and sample application to an analytical technique. The residue applicator sampler includes a sampling sponge that is resistant to most chemicals and is fastened via a plastic handle in a hermetically sealed tube containing a known amount of solvent. Upon use, the wetted sponge is removed from the sealed tube and used as a swiping device across an environmental sample. The sponge is then replaced in the hermetically sealed tube where the sample remains contained and dissolved in the solvent. A small pipette tip is removably contained in the hermetically sealed tube. The sponge is removed and placed into the pipette tip where a squeezing-out of the dissolved sample from the sponge into the pipette tip results in a droplet captured in a vial for later instrumental analysis, or applied directly to a thin layer chromatography plate for immediate analysis.

Nunes, Peter J. (Danville, CA); Kelly, Fredrick R. (Modesto, CA); Haas, Jeffrey S. (San Ramon, CA); Andresen, Brian D. (Livermore, CA)

2007-07-24T23:59:59.000Z

310

Site clean up of coal gasification residues  

SciTech Connect (OSTI)

The coal gasification plant residues tested in this research consists of various particle sizes of rock, gravel, tar-sand agglomerates, fine sand and soil. Most of the soils particles were tar free. One of the fractions examined contained over 3000 ppM polyaromatic hydrocarbons (PAHs). The residues were subjected to high pressure water jet washing, float and sink tests, and soil washing. Subsequent PAH analyses found less than 1 ppM PAHs in the water jet washing water. Soils washed with pure water lowered PAH concentrations to 276 ppM; the use of surfactants decreased PAHs to 47, 200, and 240 ppM for different test conditions. In the 47 ppM test, the surfactant temperature had been increased to 80 C, suggesting that surfactant washing efficiency can be greatly improved by increasing the solution temperature. The coal tar particles were not extracted by the surfactants used. Coke and tar-sand agglomerates collected from the float and sink gravimetric separation were tested for heating value. The tar exhibited a very high heating value, while the coke had a heating value close to that of bituminous coal. These processes are believed to have the potential to clean up coal gasification plant residues at a fairly low cost, pending pilot-scale testing and a feasibility study.

Wilson, J.W.; Ding, Y. [Univ. of Missouri, Rolla, MO (United States)

1995-12-31T23:59:59.000Z

311

In-Situ Method for Treating Residual Sodium  

DOE Patents [OSTI]

A unique process for deactivating residual sodium in Liquid Metal Fast Breeder Reactor (LMFBR) systems which uses humidified (but not saturated) carbon dioxide at ambient temperature and pressure to convert residual sodium into solid sodium bicarbonate.

Sherman, Steven R.; Henslee, S. Paul

2005-07-19T23:59:59.000Z

312

In-situ method for treating residual sodium  

SciTech Connect (OSTI)

A unique process for deactivating residual sodium in Liquid Metal Fast Breeder Reactor (LMFBR) systems which uses humidified (but not saturated) carbon dioxide at ambient temperature and pressure to convert residual sodium into solid sodium bicarbonate.

Sherman, Steven R. (Idaho Falls, ID); Henslee, S. Paul (Idaho Falls, ID)

2005-07-19T23:59:59.000Z

313

A Practical Model for Mobile, Residual, and Entrapped NAPL in...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A Practical Model for Mobile, Residual, and Entrapped NAPL in Water-Wet Porous Media. A Practical Model for Mobile, Residual, and Entrapped NAPL in Water-Wet Porous Media....

314

Heat transport by residual gases in multilayer vacuum insulation  

Science Journals Connector (OSTI)

The results of an experimental investigation of residual gas heat-transfer in multilayer vacuum insulation are reported. The “thermal paradox” observed ... variation of the residual gas pressure in the insulation

R. S. Mikhal'chenko; A. G. Gerzhin; V. T. Arkhipov…

1968-01-01T23:59:59.000Z

315

Quantifying Residual Strains in Specimens Prepared by Additive Layer Manufacturing  

Science Journals Connector (OSTI)

Residual stresses and strains are prevalent in many components, especially those that are made using additive layer manufacturing. The residual strains are superposed onto any ... analysis may lead to inaccurate ...

A. N. Okioga; R. J. Greene; R. A. Tomlinson

2014-01-01T23:59:59.000Z

316

Testing regression models with residuals as data by Xia Hua.  

E-Print Network [OSTI]

Abstract In polynomial regression ... . In this thesis, I developed a residual based test, the turning point test for residuals, which tests the hypothesis that the kth order polynomial regression holds with ... while the ...

Hua, Xia, Ph. D. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

317

NEURAL NETWORK RESIDUAL STOCHASTIC COSIMULATION FOR ENVIRONMENTAL DATA ANALYSIS  

E-Print Network [OSTI]

on radioactive soil contamination from the Chernobyl fallout. Introduction The problem of analysing environmentalNEURAL NETWORK RESIDUAL STOCHASTIC COSIMULATION FOR ENVIRONMENTAL DATA ANALYSIS V. Demyanov, M original method of stochastic simulation of environmental data -- Neural Network Residual Sequential

318

1-D Transforms for the Motion Compensation Residual  

E-Print Network [OSTI]

Transforms used in image coding are also commonly used to compress prediction residuals in video coding. Prediction residuals have different spatial characteristics from images, and it is useful to develop transforms that ...

Kamisli, Fatih

319

Interfacial Friction in Gas-Liquid Annular Flow: Analogies to Full and Transition Roughness  

SciTech Connect (OSTI)

New film thickness and pressure gradient data were obtained in a 5.08 by 101.6 mm duct for nitrogen and water in annular flow. Pressures of 3.4 and 17 atm and temperatures of 38 and 93 C were used to vary the gas density and liquid viscosity. These data are used to compute interfacial shear stresses and interfacial friction factors for comparison with several accepted literature correlations. These comparisons are reasonable for small values of the relative film thickness. However, the new data cover conditions not approached by the data used to construct those correlations. By combining the current data with the results of two other comprehensive modern experimental studies, a new correlation for the interfacial friction factor has been developed. This correlation adds elements of transition roughness to Wallis' fully-rough analogy to better predict interfacial friction factors over a wide range of gas Reynolds numbers and liquid film thicknesses.

Bauer, R.C.; Beus, S.G.; Fore, L.B.

1999-03-01T23:59:59.000Z

320

Partial order relation for approximation operators in covering based rough sets  

Science Journals Connector (OSTI)

Abstract Covering based rough sets are a generalization of classical rough sets, in which the traditional partition of the universe induced by an equivalence relation is replaced by a covering. Many definitions have been proposed for the lower and upper approximations within this setting. In this paper, we recall the most important ones and organize them into sixteen dual pairs. Then, to provide more insight into their structure, we investigate order relationships that hold among the approximation operators. In particular, we study a point-wise partial order for lower (resp., upper) approximation operators, that can be used to compare their respective approximation fineness. We establish the Hasse diagram for the partial order, showing the relationship between any pair of lower (resp., upper) operators, and identifying its minimal and maximal elements.

Mauricio Restrepo; Chris Cornelis; Jonatan Gómez

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

A rough set-based corporate memory for the case of ecotourism  

Science Journals Connector (OSTI)

Abstract Corporate memory (CM) is a major asset of any modern organization and provides access to the strategic knowledge and experience making a company more competitive. Until now, CM has not been broadly applied to tourisms, where changes are rapid, both in the nature of eco-tourist behavior and impact on the environment. In order to develop sustainable ecotourism, agile decision-making based on rules induced from data is required. However, ecotourism often provides numerous qualitative data. The qualitative nature of the data makes it difficult to analyze using standard statistical techniques. The rough set approach is suitable for processing qualitative information. In this paper, the proposed CM is incorporated within the rough set in the tourism sector, to provide efficient knowledge management for resolving the problems: (1) to understand the purposes for traveling of tourists and their feedback, and (2) to improve a travel package for attracting valued eco-tourists and reducing environmental damage.

Chun-Che Huang; Wen-Yau Liang; Tzu-Liang (Bill) Tseng; Ruo-Yin Wong

2015-01-01T23:59:59.000Z

322

An intelligent knowledge mining model for kidney cancer using rough set theory  

Science Journals Connector (OSTI)

Medical diagnosis processes vary in the degree to which they attempt to deal with different complicating aspects of diagnosis such as relative importance of symptoms, varied symptom pattern and the relation between diseases themselves. Rough set approach has two major advantages over the other methods. First, it can handle different types of data such as categorical, numerical etc. Secondly, it does not make any assumption like probability distribution function in stochastic modeling or membership grade function in fuzzy set theory. It involves pattern recognition through logical computational rules rather than approximating them through smooth mathematical functional forms. In this paper we use rough set theory as a data mining tool to derive useful patterns and rules for kidney cancer faulty diagnosis. In particular, the historical data of twenty five research hospitals and medical college is used for validation and the results show the practical viability of the proposed approach.

M.A. Saleem Durai; D.P. Acharjya; A. Kannan; N.Ch. Sriman Narayana Iyengar

2012-01-01T23:59:59.000Z

323

Electrochemical machining process for forming surface roughness elements on a gas turbine shroud  

DOE Patents [OSTI]

The back side recessed cooling surface of a shroud defining in part the hot gas path of a turbine is electrochemically machined to provide surface roughness elements and spaces therebetween to increase the heat transfer coefficient. To accomplish this, an electrode with insulating dielectric portions and non-insulating portions is disposed in opposition to the cooling surface. By passing an electrolyte between the cooling surface and electrode and applying an electrical current between the electrode and a shroud, roughness elements and spaces therebetween are formed in the cooling surface in opposition to the insulating and non-insulating portions of the electrode, hence increasing the surface area and heat transfer coefficient of the shroud.

Lee, Ching-Pang (Cincinnati, OH); Johnson, Robert Alan (Simpsonville, SC); Wei, Bin (Mechanicville, NY); Wang, Hsin-Pang (Rexford, NY)

2002-01-01T23:59:59.000Z

324

Bioassays of weathered residues of several organic phosphorus insecticides  

E-Print Network [OSTI]

residues on fruit, forage crops, and animals. The effects of temperature, relative humid? ity, light, wind, and simulated rain on the residual toxicities of many of the chlorinated hydrocarbon insecticides used for the control of cotton insects were... humidity. Sunlight was found to be an important factor in reducing the residual effectiveness of dieldrin. Wind and simulated rain reduced the period of residual effectiveness of many of the compounds tested. These investigators have shown...

Hightower, Billie Gene

2013-10-04T23:59:59.000Z

325

Roughing It: A Mantellid Poison Frog Shows Greater Alkaloid Diversity in Some Disturbed Habitats  

Science Journals Connector (OSTI)

Roughing It: A Mantellid Poison Frog Shows Greater Alkaloid Diversity in Some Disturbed Habitats# ... The alkaloids in mantellids are typically of a molecular weight less than 400 amu and are mainly of the “izidine” classes, e.g., pyrrolizidines, indolizidines, and quinolizidines, the latter two sometimes elaborated with complex side-chains as in the pumiliotoxin and homopumiliotoxin classes, respectively (Figure 1). ... Representative alkaloid structures of each class observed in the current study. ...

Nirina R. Andriamaharavo; H. Martin Garraffo; Ralph A. Saporito; John W. Daly; Christian R. Razafindrabe; Marta Andriantsiferana; Thomas F. Spande

2010-02-23T23:59:59.000Z

326

Global Distribution of Ice Cloud Particle Shape and Roughness from PARASOL Satellite Measurements  

E-Print Network [OSTI]

reflected back to space by a factor of two (Baran 2012; Ulanowski et al. 2006). Particle shape can also have a large impact on the radiative properties and can influence the cloud radiative forcing. To reduce these uncertainties and deliver more accurate... rosettes, plates, and columns. Surface roughness has been observed in laboratory measurements of ice and in field campaigns (Baran et al. 2011; Ulanowski et al. 2006). Thermodynamic conditions influence whether an ice particle is roughened and how...

Cole, Benjamin

2013-07-29T23:59:59.000Z

327

Dominance-based rough set approach and analytic network process for assessing urban transformation scenarios  

Science Journals Connector (OSTI)

The paper shows the contribution that two different multiple criteria decision aiding (MCDA) methods could provide in the field of strategic decisions and urban and territorial planning. In particular, the analytic network process and the dominance-based rough set approach have been considered and discussed in the work with reference to their role in supporting such decision-making processes, trying to compare the different contributions given by the two approaches in this specific domain of application.

Francesca Abastante; Marta Bottero; Salvatore Greco; Isabella M. Lami

2013-01-01T23:59:59.000Z

328

The Three-Dimensional Morphology of Stylolites: Roughness Analysis and Possible Genetic Implications  

SciTech Connect (OSTI)

Stylolites are dynamic roughly planar surfaces formed by pressure solution of blocks of rocks into each other. The three-dimensional geometry of 12 bedding-parallel stylolites in several limestones was measured using laser and mechanical profilometers, and statistical characteristics of the surfaces were calculated. All the stylolites analyzed turn out to have self-affine fractal roughness with a well-characterized crossover length scale separating two self-affine regimes. Strikingly, this characteristic length scale falls within a very narrow range for all the stylolites studied, regardless of the microstructure sizes. To explain the data, we propose a continuous phenomenological model that accounts for the development of the measured roughness from an initially flat surface. The model postulates that the complex interface morphology is the result of competition between the long-range elastic redistribution of local stress fluctuations, which roughen the surface, and surface tension forces along the interface, which smooth it. The model accounts for the geometrical variability of stylolite surfaces and predicts the dependence of the crossover length scale on the mechanical properties of the rock.

Francois Renard; Jean Schmittbuhl; Jean-Pierre Gratier; Paul Meakin; Enrique Merino

2004-02-01T23:59:59.000Z

329

Energy production rates in fluid mixtures of inelastic rough hard spheres  

E-Print Network [OSTI]

The aim of this work is to explore the combined effect of polydispersity and roughness on the partial energy production rates and on the total cooling rate of a granular fluid mixture. We consider a mixture of inelastic rough hard spheres of different number densities, masses, diameters, moments of inertia, and mutual coefficients of normal and tangential restitution. Starting from the first equation of the BBGKY hierarchy, the collisional energy production rates associated with the translational and rotational temperatures ($T_i^\\text{tr}$ and $T_i^\\text{rot}$) are expressed in terms of two-body average values. Next, those average values are estimated by assuming a velocity distribution function based on maximum-entropy arguments, allowing us to express the energy production rates and the total cooling rate in terms of the partial temperatures and the parameters of the mixture. Finally, the results are applied to the homogeneous cooling state of a binary mixture and the influence of inelasticity and roughness on the temperature ratios $T_1^\\text{tr}/T_1^\\text{rot}$, $T_2^\\text{tr}/T_1^\\text{tr}$, and $T_2^\\text{rot}/T_1^\\text{rot}$ is analyzed.

Andrés Santos; Gilberto M. Kremer; Vicente Garzó

2010-07-16T23:59:59.000Z

330

Ashot Minasyan SQ-universality and residual properties. . . -slide #1 The SQ-universality and residual properties of  

E-Print Network [OSTI]

Ashot Minasyan SQ-universality and residual properties. . . - slide #1 The SQ-universality Main Results Ashot Minasyan SQ-universality and residual properties. . . - slide #2 SQ-universality and residual properties. . . - slide #2 SQ-universality A group G is called SQ-universal if any countable group

Minasyan, Ashot

331

Dopant atom clustering and charge screening induced roughness of electronic interfaces in GaAs p-n multilayers  

Science Journals Connector (OSTI)

The roughness of the electronic interfaces of p-n GaAs multilayers is investigated by cross-sectional scanning tunneling microscopy. Two physically different contributions to the roughness are found, both much larger than the underlying atomically sharp “metallurgical” interface. The roughness arises from the individual electrostatic screening fields around each dopant atom near the interface and from a clustering of dopant atoms. The latter leads to charge-carrier-depleted zones extending locally through the entire nominally homogeneously doped layer for layer thicknesses close to the cluster dimension, hence limiting the precision of the spatial and energetic positioning of the Fermi energy in nanoscale semiconductor structures.

N. D. Jäger, K. Urban, E. R. Weber, and Ph. Ebert

2002-05-24T23:59:59.000Z

332

Evaluation of agricultural residues for paper manufacture  

SciTech Connect (OSTI)

Five agricultural residues-olive tree fellings, wheat straw, sunflower stalks, vine shoots, and cotton stalks-were evaluated for use as raw materials for paper manufacture. The untreated raw materials and their pulps were tested for hot-water solubles, 1%-NaOH solubles, alcohol-benzene extractables, ash, holocellulose, lignin, [alpha]-cellulose, and pentosans. Handsheets were tested for breaking length, stretch, burst index, and tear index. The results showed wheat straw to be the most promising material. Vine shoots showed the least promise.

Alcaide, L.J.; Baldovin, F.L.; Herranz, J.L.F. (Univ. of Cordoba (Spain))

1993-03-01T23:59:59.000Z

333

Kaisheng Biomass Residue Power Co Ltd | Open Energy Information  

Open Energy Info (EERE)

Kaisheng Biomass Residue Power Co Ltd Kaisheng Biomass Residue Power Co Ltd Jump to: navigation, search Name Kaisheng Biomass Residue Power Co., Ltd. Place Nanping City, Fujian Province, China Zip 365001 Sector Biomass Product Chinese developer of a CDM registered biomass plant. References Kaisheng Biomass Residue Power Co., Ltd.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Kaisheng Biomass Residue Power Co., Ltd. is a company located in Nanping City, Fujian Province, China . References ↑ "[ Kaisheng Biomass Residue Power Co., Ltd.]" Retrieved from "http://en.openei.org/w/index.php?title=Kaisheng_Biomass_Residue_Power_Co_Ltd&oldid=347879" Categories: Clean Energy Organizations

334

Washing treatment of automotive shredder residue (ASR)  

Science Journals Connector (OSTI)

Abstract Worldwide, the amount of end-of-life vehicles (ELVs) reaches 50 million units per year. Once the ELV has been processed, it may then be shredded and sorted to recover valuable metals that are recycled in iron and steelmaking processes. The residual fraction, called automotive shredder residue (ASR), represents 25% of the ELV and is usually landfilled. In order to deal with the leachable fraction of ASR that poses a potential threat to the environment, a washing treatment before landfilling was applied. To assess the potential for full-scale application of washing treatment, tests were carried out in different conditions (L/S = 3 and 5 L/kgTS; t = 3 and 6 h). Moreover, to understand whether the grain size of waste could affect the washing efficiency, the treatment was applied to ground (<4 mm) and not-ground samples. The findings obtained revealed that, on average, washing treatment achieved removal rates of more than 60% for dissolved organic carbon (DOC), chemical oxygen demand (COD) and total Kjeldahl nitrogen (TKN). With regard to metals and chlorides, sulphates and fluoride leachable fraction, a removal efficiency of approximately 60% was obtained, as confirmed also by EC values. The comparison between the results for ground and not-ground samples did not highlight significant differences.

Raffaello Cossu; Tiziana Lai

2013-01-01T23:59:59.000Z

335

Yao, Y.Y., Decision-theoretic Rough Set Models (DTRSM) Computer Science (Ji Suan Ji Ke Xue), Vol. 35, No. 8A, pp. 7-8, 2008.  

E-Print Network [OSTI]

Yao, Y.Y., Decision-theoretic Rough Set Models (DTRSM) Computer Science (Ji Suan Ji Ke Xue), Vol. 35, No. 8A, pp. 7-8, 2008. Decision-Theoretic Rough Set Models (DTRSM) Yiyu (Y.Y.) Yao Department://www.cs.uregina.ca/~yyao The standard rough sets model is a qualitative model that defines three regions for approximating a subset

Yao, Yiyu

336

44 IEEE TRANSACTIONS ON ELECTRONICS PACKAGING MANUFACTURING, VOL. 24, NO. 1, JANUARY 2001 Rough Set Theory: A Data Mining Tool for  

E-Print Network [OSTI]

44 IEEE TRANSACTIONS ON ELECTRONICS PACKAGING MANUFACTURING, VOL. 24, NO. 1, JANUARY 2001 Rough Set of new knowledge, and autonomous decision- making. In this paper, the basic concepts of rough set theory and other aspects of data mining are introduced. The rough set theory offers a viable approach

Kusiak, Andrew

337

Influences of Sea Surface Temperature Gradients and Surface Roughness Changes on the Motion of Surface Oil: A Simple Idealized Study  

Science Journals Connector (OSTI)

The authors' modeling shows that changes in sea surface temperature (SST) gradients and surface roughness between oil-free water and oil slicks influence the motion of the slick. Physically significant changes occur in surface wind speed, surface ...

Yangxing Zheng; Mark A. Bourassa; Paul Hughes

2013-07-01T23:59:59.000Z

338

Developing a Knowledge-Based System Using Rough Set Theory and Genetic Algorithms for Substation Fault Diagnosis  

Science Journals Connector (OSTI)

This chapter proposes a novel and hybrid approach using Rough Set Theory and a Genetic Algorithm (RS-GA) indexrough hybrid to extract knowledge from a set of events captured by (microprocessor based) protection, ...

Ching Lai Hor; Peter Crossley; Simon Watson…

2009-01-01T23:59:59.000Z

339

Positional cloning and characterization of the Rotten Ear (Rte) gene in Zea mays  

E-Print Network [OSTI]

with EcoRI and SalI, with Cold Fusion technology (System+2x35S cut with XhoI using Cold Fusion technology (SystemXhoI and XbaI cut sites using Cold Fusion technology (System

Tabi, Ma Zara Emilia Marañon

2011-01-01T23:59:59.000Z

340

Positional cloning and characterization of the Rotten Ear (Rte) gene in Zea mays  

E-Print Network [OSTI]

using the primers RE-cds-F1 with RE-cds-R3 and RE-cds-F3RE-cds- R2 for Rte, RteL-cds-F1 with RteL-cds-R1 and RteL-R6 for Rte, and RteL-RTPCR-F1 with RteL-RTPCR-R1 for Rte-L (

Tabi, Ma Zara Emilia Marañon

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Measurement and correlation of conditions for entrapment and mobilization of residual oil. Final report  

SciTech Connect (OSTI)

Six tasks are reported: capillary number relationships for rock samples, residual oil saturation near wellbore, residual oil structure, effect of gravity on residual saturation, magnitude of residual oil saturation, and effects of wettability on capillary number relationships. (DLC)

Morrow, N.R.

1981-10-01T23:59:59.000Z

342

Fluid squeeze-out between rough surfaces: comparison of theory with experiment  

E-Print Network [OSTI]

We study the time dependency of the (average) interfacial separation between an elastic solid with a flat surface and a rigid solid with a randomly rough surface, squeezed together in a fluid. We use an analytical theory describing the fluid flow factors, based on the Persson contact mechanics theory and the Bruggeman effective medium theory, to calculate the removal of the fluid from the contacting interface of the two solids. In order to test this approach, we have performed simple squeeze-out experiments. The experimental results are compared to the theory predictions.

B. Lorenz; B. N. J. Persson

2011-02-07T23:59:59.000Z

343

Anomalous scaling and super-roughness in the growth of CdTe polycrystalline films  

E-Print Network [OSTI]

CdTe films grown on glass substrates covered by fluorine doped tin oxide by Hot Wall Epitaxy (HWE) were studied through the interface dynamical scaling theory. Direct measures of the dynamical exponent revealed an intrinsically anomalous scaling characterized by a global roughness exponent $\\alpha$ distinct from the local one (the Hurst exponent $H$), previously reported [Ferreira \\textit{et al}., Appl. Phys. Lett. \\textbf{88}, 244103 (2006)]. A variety of scaling behaviors was obtained with varying substrate temperature. In particular, a transition from a intrinsically anomalous scaling regime with $H\

Angélica S. Mata; Silvio C. Ferreira, Jr.; Igor R. B. Ribeiro; Sukarno O. Ferreira

2011-01-06T23:59:59.000Z

344

Turbulent Friction in Rough Pipes and the Energy Spectrum of the Phenomenological Theory  

E-Print Network [OSTI]

The classical experiments on turbulent friction in rough pipes were performed by J. Nikuradse in the 1930's. Seventy years later, they continue to defy theory. Here we model Nikuradse's experiments using the phenomenological theory of Kolmog\\'orov, a theory that is widely thought to be applicable only to highly idealized flows. Our results include both the empirical scalings of Blasius and Strickler, and are otherwise in minute qualitative agreement with the experiments; they suggest that the phenomenological theory may be relevant to other flows of practical interest; and they unveil the existence of close ties between two milestones of experimental and theoretical turbulence.

G. Gioia; Pinaki Chakraborty

2005-07-08T23:59:59.000Z

345

Extraction of design rules from multi-objective design exploration (MODE) using rough set theory  

Science Journals Connector (OSTI)

Multi-objective design exploration (MODE) and its application for design rule extraction are presented. MODE reveals the structure of design space from the trade-off information. The self-organizing map (SOM) is incorporated into MODE as a visual data-mining tool for design space. SOM divides the design space into clusters with specific design features. The sufficient conditions for belonging to a cluster of interest are extracted using rough set theory. The resulting MODE was applied to the multidisciplinary wing design problem, which revealed a cluster of good designs, and we extracted the design rules of such designs successfully.

Shigeru Obayashi

2011-01-01T23:59:59.000Z

346

An efficient classifier design integrating Rough Set and Dempster-Shafer Theory  

Science Journals Connector (OSTI)

An integrated approach of knowledge discovery has been proposed in the paper using Rough Set Theory (RST) and Dempster-Shafer's (D-S) theory where high dimensional data is reduced in two folds. Firstly, unimportant attributes are eliminated using RST generating minimal subset of attributes, called reducts. Considering each core attribute as root of a decision tree, classification rules are built and grouped based on some similarity measure. Representative of each group constitute the new rule set and thus rules has been reduced while important information are retained. D-S theory ensembles the rules from which a classifier with highest accuracy has been selected.

Asit Kumar Das; Jaya Sil

2010-01-01T23:59:59.000Z

347

EFFECTS OF GRAPHITE SURFACE ROUGHNESS ON BYPASS FLOW COMPUTATIONS FOR AN HTGR  

SciTech Connect (OSTI)

Bypass flow in a prismatic high temperature gas reactor (HTGR) occurs between graphite blocks as they sit side by side in the core. Bypass flow is not intentionally designed to occur in the reactor, but is present because of tolerances in manufacture, imperfect installation and expansion and shrinkage of the blocks from heating and irradiation. It is desired to increase the knowledge of the effects of such flow, which has been estimated to be as much as 20% of the total helium coolant flow. Computational fluid dynamic (CFD) simulations can provide estimates of the scale and impacts of bypass flow. Previous CFD calculations have examined the effects of bypass gap width, level and distribution of heat generation and effects of shrinkage. The present contribution examines the effects of graphite surface roughness on the bypass flow for different relative roughness factors on three gap widths. Such calculations should be validated using specific bypass flow measurements. While such experiments are currently underway for the specific reference prismatic HTGR design for the next generation nuclear plant (NGNP) program of the U. S. Dept. of Energy, the data are not yet available. To enhance confidence in the present calculations, wall shear stress and heat transfer results for several turbulence models and their associated wall treatments are first compared for flow in a single tube that is representative of a coolant channel in the prismatic HTGR core. The results are compared to published correlations for wall shear stress and Nusselt number in turbulent pipe flow. Turbulence models that perform well are then used to make bypass flow calculations in a symmetric onetwelfth sector of a prismatic block that includes bypass flow. The comparison of shear stress and Nusselt number results with published correlations constitutes a partial validation of the CFD model. Calculations are also compared to ones made previously using a different CFD code. Results indicate that increasing surface roughness increases the maximum fuel and helium temperatures as do increases in gap width. However, maximum coolant temperature variation due to increased gap width is not changed by surface roughness.

Rich Johnson; Yu-Hsin Tung; Hiroyuki Sato

2011-07-01T23:59:59.000Z

348

Chapter 9 - Zinc and Residue Recycling  

Science Journals Connector (OSTI)

Abstract Annual global production of zinc is more than 13 million tons. More than 50% of this amount is used for galvanizing while the rest is mainly split into brass production, zinc-based alloys, semi manufacturers and zinc compounds such as zinc oxide and zinc sulfate. For the zinc and steel industries, recycling of zinc-coated steel provides an important new source of raw material. Historically, the generation of zinc-rich dusts from steel recycling was a source of loss from the life-cycle (landfill); however, technologies today provide incentive for steel recyclers to minimize waste. Thus, the recycling loop is endless—both zinc and steel can be recycled again and again without losing any of their physical or chemical properties. Depending on the composition of the scrap being recycled, it can either be remelted or returned to the refining process. This chapter describes the main processes for zinc recycling from different scraps and residues.

Jürgen Antrekowitsch; Stefan Steinlechner; Alois Unger; Gernot Rösler; Christoph Pichler; Rene Rumpold

2014-01-01T23:59:59.000Z

349

Investigating surface roughness, material removal rate and corrosion resistance in PMEDM of ?-TiAl intermetallic  

Science Journals Connector (OSTI)

Titanium aluminide intermetallics offer an attractive combination of low density and good oxidation, corrosion and ignition resistance with unique mechanical properties. In this study two series of machining tests are designed. Firstly the powder mixed electrical discharge machining (PMEDM) of ?-TiAl by means of different powders such as aluminum, chrome, silicon carbide, graphite and iron is performed to investigate the output characteristics of surface roughness and topography, material removal rate (MRR), electrochemical corrosion resistance of machined samples and also the machined surfaces are investigated by means of EDS and XRD analyses. Secondly after selection the aluminum powder as the most appropriate kind of powder, the current, pulse on time, powder size and powder concentration are changed in different levels for overall comparison between EDM and PMEDM output characteristics. In the first setting of input machining parameters, aluminum powder improves the surface roughness of TiAl sample about 32% comparing with EDM case and also aluminum particles with the size of 2 ?m, in the second setting of input parameters lead to 54% enhancement of MRR comparing with EDM case. The electrochemical corrosion results show that, corrosion resistance of the samples which are machined by graphite and chrome powders respectively are about three and two times more than the sample which is machined without powder.

Behzad Jabbaripour; Mohammad Hossein Sadeghi; Mohammad Reza Shabgard; Hossein Faraji

2013-01-01T23:59:59.000Z

350

Entropy based unsupervised Feature Selection in digital mammogram image using rough set theory  

Science Journals Connector (OSTI)

Feature Selection (FS) is a process, which attempts to select features, which are more informative. In the supervised FS methods various feature subsets are evaluated using an evaluation function or metric to select only those features, which are related to the decision classes of the data under consideration. However, for many data mining applications, decision class labels are often unknown or incomplete, thus indicating the significance of unsupervised FS. However, in unsupervised learning, decision class labels are not provided. The problem is that not all features are important. Some of the features may be redundant, and others may be irrelevant and noisy. In this paper, a novel unsupervised FS in mammogram image, using rough set-based entropy measures, is proposed. A typical mammogram image processing system generally consists of mammogram image acquisition, pre-processing of image, segmentation, features extracted from the segmented mammogram image. The proposed method is used to select features from data set, the method is compared with the existing rough set-based supervised FS methods and classification performance of both methods are recorded and demonstrates the efficiency of the method.

C. Velayutham; K. Thangavel

2012-01-01T23:59:59.000Z

351

Gene selection using rough set based on neighborhood for the analysis of plant stress response  

Science Journals Connector (OSTI)

Abstract Gene selection and sample classification based on gene expression data are important research trends in bioinformatics. It is very difficult to select significant genes closely related to classification because of the high dimension and small sample size of gene expression data. Rough set based on neighborhood has been successfully applied to gene selection, as it selects attributes without redundancy and deals with numerical attributes directly. Construction of neighborhoods, approximation operators and attribute reduction algorithm are three key components in this gene selection approach. In this study, a novel neighborhood named intersection neighborhood for numerical data was defined. The performances of two kinds of approximation operators were compared on gene expression data. A significant gene selection algorithm, which was applied to the analysis of plant stress response, was proposed by using positive region and gene ranking, and then this algorithm with thresholds optimization for intersection neighborhood was extended. The performance of the proposed algorithm, along with a comparison with other related methods, classical algorithms and rough set methods, was analyzed. The results of experiments on four data sets showed that intersection neighborhood was more flexible to adapt to the data with various structure, and approximation operator based on elementary set was more suitable for this application than that based on element. That was to say that the proposed algorithms were effective, as they could select significant gene subsets without redundancy and achieve high classification accuracy.

Jun Meng; Jing Zhang; Rui Li; Yushi Luan

2014-01-01T23:59:59.000Z

352

Precision coupling system modelling based on rough set and support vector machine  

Science Journals Connector (OSTI)

This paper presents the results of a research into the use of rough set (RS) for the precision coupling system modelling based on support vector machine (SVM). Because of the impact of multiple geometric parameters, there are more input variables in the precision coupling system modelling process. The high-dimensional data poses an interesting challenge to machine learning, as the presence of large numbers of redundant or highly correlated variables can seriously degrade modelling accuracy. In this study, a modelling method was developed based on rough set and support vector machine for precision coupling system. We used RS as the pre-processor for precision coupling system modelling, so as to realise dimension reduction of the high-dimensional data and improve the predictive performance of machine learning method, and then SVM was used for precision coupling system modelling. Experiments were carried out on a typical precision coupling, hydraulic valve. The results show that the use of RS method can improve the performance of machine learning in the modelling of high-dimensional data.

Jian-wei Ma; Fu-ji Wang; Zhen-yuan Jia; Wei Liu

2013-01-01T23:59:59.000Z

353

Feature selection for transient stability assessment based on kernelized fuzzy rough sets and memetic algorithm  

Science Journals Connector (OSTI)

Abstract A new feature selection method based on kernelized fuzzy rough sets (KFRS) and the memetic algorithm (MA) is proposed for transient stability assessment of power systems. Considering the possible real-time information provided by wide-area measurement systems, a group of system-level classification features are extracted from the power system operation parameters to build the original feature set. By defining a KFRS-based generalized classification function as the separability criterion, the memetic algorithm based on binary differential evolution (BDE) and Tabu search (TS) is employed to obtain the optimal feature subsets with the maximized classification capability. The proposed method may avoid the information loss caused by the feature discretization process of the rough-set based attribute selection, and comprehensively utilize the advantages of BDE and TS to improve the solution quality and search efficiency. The effectiveness of the proposed method is validated by the application results on the New England 39-bus power system and the southern power system of Hebei province.

Xueping Gu; Yang Li; Jinghua Jia

2015-01-01T23:59:59.000Z

354

Effect of nanoscale surface roughness on the bonding energy of direct-bonded silicon wafers  

Science Journals Connector (OSTI)

Direct wafer bonding of silicon wafers is a promising technology for manufacturing three-dimensional complex microelectromechanical systems as well as silicon-on-insulator substrates. Previous work has reported that the bond quality declines with increasing surface roughness however this relationship has not been quantified. This article explicitly correlates the bond quality which is quantified by the apparent bonding energy and the surface morphology via the bearing ratio which describes the area of surface lying above a given depth. The apparent bonding energy is considered to be proportional to the real area of contact. The effective area of contact is defined as the area sufficiently close to contribute to the attractive force between the two bonding wafers. Experiments were conducted with silicon wafers whose surfaces were roughened by a buffered oxide etch solution (BOE HF:NH 4 F =1:7) and/or a potassium hydroxide solution. The surface roughness was measured by atomic force microscopy. The wafers were direct bonded to polished “monitor” wafers following a standard RCA cleaning and the resulting bonding energy was measured by the crack-opening method. The experimental results revealed a clear correlation between the bonding energy and the bearing ratio. A bearing depth of ?1.4 nm was found to be appropriate for the characterization of direct-bonded silicon at room temperature which is consistent with the thickness of the water layer at the interface responsible for the hydrogen bonds that link the mating wafers.

N. Miki; S. M. Spearing

2003-01-01T23:59:59.000Z

355

Residuals, Sludge, and Composting (Maine) | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Residuals, Sludge, and Composting (Maine) Residuals, Sludge, and Composting (Maine) Residuals, Sludge, and Composting (Maine) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Maine Program Type Siting and Permitting Provider Department of Environmental Protection The Maine Department of Environmental Protection's Residuals, Sludge, and Composting program regulates the land application and post-processing of organic wastes, including sewage sludge, septage, food waste, and wood

356

Table 19. U.S. Refiner Residual Fuel Oil Prices  

U.S. Energy Information Administration (EIA) Indexed Site

Prices," source for backcast estimates prior to January 1983. 19. U.S. Refiner Residual Fuel Oil Prices 36 Energy Information Administration Petroleum Marketing Annual 1996...

357

Table 19. U.S. Refiner Residual Fuel Oil Prices  

U.S. Energy Information Administration (EIA) Indexed Site

Prices," source for backcast estimates prior to January 1983. 19. U.S. Refiner Residual Fuel Oil Prices 36 Energy Information Administration Petroleum Marketing Annual 1997...

358

Posters Residual Analysis of Surface Spectral Radiances Between...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 Posters Residual Analysis of Surface Spectral Radiances Between Instrument Observations and Line-by-Line Calculations S. A. Clough and P. D. Brown Atmospheric and Environmental...

359

Water dynamics clue to key residues in protein folding  

SciTech Connect (OSTI)

A computational method independent of experimental protein structure information is proposed to recognize key residues in protein folding, from the study of hydration water dynamics. Based on all-atom molecular dynamics simulation, two key residues are recognized with distinct water dynamical behavior in a folding process of the Trp-cage protein. The identified key residues are shown to play an essential role in both 3D structure and hydrophobic-induced collapse. With observations on hydration water dynamics around key residues, a dynamical pathway of folding can be interpreted.

Gao, Meng [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)] [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China); Zhu, Huaiqiu, E-mail: hqzhu@pku.edu.cn [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)] [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China); Yao, Xin-Qiu [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China) [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China); Department of Biophysics, Kyoto University, Sakyo Kyoto 606-8502 (Japan); She, Zhen-Su, E-mail: she@pku.edu.cn [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)] [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)

2010-01-29T23:59:59.000Z

360

Residual Stresses for Structural Analysis and Fatigue Life Prediction...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Analysis and Fatigue Life Prediction in Vehicle Components: Success stories from the High Temperature Materials Laboratory (HTML) User Program Residual Stresses for Structural...

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Disappearance of fusionlike residues and the nuclear equation of state  

SciTech Connect (OSTI)

The cross sections for massive residues from {sup 40}Ca+{sup 40}Ca and {sup 40}Ar+{sup 27}Al collisions were calculated with an improved Boltzmann-Uehling-Uhlenbeck equation. The calculated residue cross sections decrease with incident energy, an effect which does not appear related to the residue excitation energy. Larger residue cross sections result from calculations with larger in-medium nucleon-nucleon cross sections or with equations of state which are less attractive at subnuclear density. This dual sensitivity may be eliminated by measurements of observables associated with the coincident light particles.

Xu, H.M.; Lynch, W.G.; Danielewicz, P.; Bertsch, G.F. (National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI (USA) Department of Physics, Michigan State University, East Lansing, MI (USA))

1990-08-13T23:59:59.000Z

362

Optical measurement of the rms (root-mean-square) roughness of ion-bombarded surfaces. Final report, 1986-1987  

SciTech Connect (OSTI)

Ion-implantation and related ion-beam-processing techniques are used to modify the surface of materials and produce certain desirable properties. However, these methods sometimes roughen the surfaces to which they are applied. If undetected, such roughness can lead to erroneous interpretation of data gathered by most standard surface-analysis techniques. Many surface profilometers and scanning electron microscopes lack sufficient spatial resolution to detect fine-scale roughness that can complicate the data interpretation. A simple optical instrument was constructed to measure the root-mean-square (rms) roughness, below about 100 nm, of ion bombarded surfaces. This instrument measures the total integrated scatter (TIS) of almost normally incident laser light, which (under conditions specified by scalar scattering (theory)) is simply related to the rms surface roughness. This paper describes the construction and calibration of the TIS instrument. In addition, it presents results on the rms roughness of several ion-beam-processed systems, including TiN films on Si and Cr and Cr/sub 2/O/sub 3/ films on AISI 52100 steel, ion beam mixed Mo in Al, Si(x)N(1-x) refractive layers, and GaAs/AlAs superlattices.

Ferguson, C.D.

1987-05-19T23:59:59.000Z

363

Improved detection of rough defects for ultrasonic NDE inspections based on finite element modeling of elastic wave scattering  

SciTech Connect (OSTI)

Defects which posses rough surfaces greatly affect ultrasonic wave scattering behaviour, often reducing the magnitude of reflected signals. Ultrasonic inspections rely upon this response for detecting and sizing flaws. For safety critical components reliable characterisation is crucial. Therefore, providing an accurate means to predict reductions in signal amplitude is essential. An extension of Kirchhoff theory has formed the basis for the UK power industry inspection justifications. However, it is widely recognised that these predictions are pessimistic owing to analytical approximations. A numerical full field modelling approach does not fall victim to such limitations. Here, a Finite Element model is used to aid in setting a non-conservative reporting threshold during the inspection of a large pressure vessel forging that might contain embedded rough defects. The ultrasonic response from multiple rough surfaces defined by the same statistical class is calculated for normal incident compression waves. The approach is validated by comparing coherent scattering with predictions made by Kirchhoff theory. At lower levels of roughness excellent agreement is observed, whilst higher values confirm the pessimism of Kirchhoff theory. Furthermore, the mean amplitude in the specular direction is calculated. This represents the information obtained during an inspection, indicating that reductions due to increasing roughness are significantly less than the coherent component currently being used.

Pettit, J. R. [Rolls-Royce Nuclear, PO BOX 2000, Derby, UK, DE21 7XX and Research Centre for NDE, Imperial College London, Exhibition Road, London SW7 2AZ (United Kingdom); Walker, A. [Rolls-Royce Nuclear, PO BOX 2000, Derby DE21 7XX (United Kingdom); Lowe, M. J. S. [Research Centre for NDE, Imperial College London, Exhibition Road, London SW7 2AZ (United Kingdom)

2014-02-18T23:59:59.000Z

364

Phase Chemistry of Tank Sludge Residual Components  

SciTech Connect (OSTI)

The US Department of Energy (DOE) has millions of gallons of high level nuclear waste stored in underground tanks at Hanford, Washington and Savannah River, South Carolina. These tanks will eventually be emptied and decommissioned. This will leave a residue of sludge adhering to the interior tank surfaces that may contaminate nearby groundwaters with radionuclides and RCRA metals. Performance assessment (PA) calculations must be carried out prior to closing the tanks. This requires developing radionuclide release models from the sludges so that the PA calculations can be based on credible source terms. These efforts continued to be hindered by uncertainties regarding the actual nature of the tank contents and the distribution of radionuclides among the various phases. In particular, it is of vital importance to know what radionuclides are associated with solid sludge components. Experimentation on actual tank sludges can be difficult, dangerous and prohibitively expensive. The research funded under this grant for the past three years was intended to provide a cost-effective method for developing the needed radionuclide release models using non-radioactive artificial sludges. Insights gained from this work will also have more immediate applications in understanding the processes responsible for heel development in the tanks and in developing effective technologies for removing wastes from the tanks.

J.L. Krumhansl

2002-04-02T23:59:59.000Z

365

Phytoplankton biomass and residual nitrate in the pelagic ecosystem  

Science Journals Connector (OSTI)

...research-article Research Article Phytoplankton biomass and residual nitrate in the pelagic ecosystem...are linked to changes in the chlorophyll biomass. The model can be treated analytically...Mathematical bounds are found for the autotrophic biomass and the residual nitrate in terms of the...

2003-01-01T23:59:59.000Z

366

Maximum Residual Energy Routing with Reverse Energy Cost  

E-Print Network [OSTI]

node consumes energy, but the receiving node does not. This assumption is not true if acknowledgementsMaximum Residual Energy Routing with Reverse Energy Cost Qiling Xie, Chin-Tau Lea, Mordecai J-The Maximum Residual Energy Path (MREP) routing has been shown an effective routing scheme for energy

Fleischer, Rudolf

367

Modeling Sustainable Agricultural Residue Removal at the Subfield Scale  

SciTech Connect (OSTI)

This study developed a computational strategy that utilizes data inputs from multiple spatial scales to investigate how variability within individual fields can impact sustainable residue removal for bioenergy production. Sustainable use of agricultural residues for bioenergy production requires consideration of the important role that residues play in limiting soil erosion and maintaining soil C, health, and productivity. Increased availability of subfield-scale data sets such as grain yield data, high-fidelity digital elevation models, and soil characteristic data provides an opportunity to investigate the impacts of subfield-scale variability on sustainable agricultural residue removal. Using three representative fields in Iowa, this study contrasted the results of current NRCS conservation management planning analysis with subfield-scale analysis for rake-and-bale removal of agricultural residue. The results of the comparison show that the field-average assumptions used in NRCS conservation management planning may lead to unsustainable residue removal decisions for significant portions of some fields. This highlights the need for additional research on subfield-scale sustainable agricultural residue removal including the development of real-time variable removal technologies for agricultural residue.

Muth, D.J.; McCorkle, D.S.; Koch, J.B.; Bryden, K.M.

2012-05-02T23:59:59.000Z

368

AIAA-2001-0025 SPECTRUM FATIGUE LIFETIME AND RESIDUAL STRENGTH  

E-Print Network [OSTI]

fit of the two. Direct lifetime under a variety of loads spectra for wind tests of residual strength for a modified standard wind bone coupons were manufactured, tested and favorably turbine spectrum. When a single and residual strength. Over 900 tests spectrum loading and fatigue lifetimes of a typical wind have been run

369

Organic photosensitive cells grown on rough electrode with nano-scale morphology control  

DOE Patents [OSTI]

An optoelectronic device and a method for fabricating the optoelectronic device includes a first electrode disposed on a substrate, an exposed surface of the first electrode having a root mean square roughness of at least 30 nm and a height variation of at least 200 nm, the first electrode being transparent. A conformal layer of a first organic semiconductor material is deposited onto the first electrode by organic vapor phase deposition, the first organic semiconductor material being a small molecule material. A layer of a second organic semiconductor material is deposited over the conformal layer. At least some of the layer of the second organic semiconductor material directly contacts the conformal layer. A second electrode is deposited over the layer of the second organic semiconductor material. The first organic semiconductor material is of a donor-type or an acceptor-type relative to the second organic semiconductor material, which is of the other material type.

Yang, Fan (Piscataway, NJ); Forrest, Stephen R. (Ann Arbor, MI)

2011-06-07T23:59:59.000Z

370

A knowledge discovery from incomplete coronary artery disease datasets using rough set  

Science Journals Connector (OSTI)

Incompleteness of datasets is one of the important issues in the area of knowledge discovery in medicine. This study proposes a rough set theory (RST)-based knowledge discovery from coronary artery disease (CAD) datasets when there are only small number of objects and contain missing data (incomplete). At first, RST combined with artificial neural network (ANN) is developed to impute the missing data of the datasets. Then, the knowledge that is discovered from imputed datasets is used to evaluate the quality of the imputation. After that, RST is applied to extract rules from the imputed datasets. This will result in a large number of rules. Rule selection based on the quality of extracted rules is investigated. All the evaluation and selection are based on the complete datasets. Finally, the selected small number of rules is evaluated. The discovered selected rules are used as a classifier on the diagnosis of the presence of CAD to demonstrate their good performance.

Noor Akhmad Setiawan; P.A. Venkatachalam; M.H. Ahmad Fadzil

2011-01-01T23:59:59.000Z

371

Unsupervised feature selection using rough set and teaching learning-based optimisation  

Science Journals Connector (OSTI)

Feature selection is a valuable technique in data analysis for information preserving data reduction. This paper proposes to consider an information system without any decision attribute. The proposal is useful when we get unlabeled data, which contains only input information (condition attributes) but without decision (class attribute). TLBO clustering algorithm is applied to cluster the given information. Decision table could be formulated using this clustered data as the decision variable. Then rough set and TLBO algorithms are applied for selecting features. The experiments are carried out on datasets of UCI machine repository and from the website http://www.ailab.si/orange/datasets.asp to analyse the performance study of our proposed approach with other approaches like genetic algorithm, particle swarm optimisation and differential evolution techniques. The results clearly reveal that our proposed approach outperforms other approaches investigated in this paper.

Suresh Chandra Satapathy; Anima Naik; K. Parvathi

2013-01-01T23:59:59.000Z

372

Enhancement of Mahalanobis–Taguchi System via Rough Sets based Feature Selection  

Science Journals Connector (OSTI)

Abstract The current research presents a methodology for classification based on Mahalanobis Distance (MD) and Association Mining using Rough Sets Theory (RST). MD has been used in Mahalanobis Taguchi System (MTS) to develop classification scheme for systems having dichotomous states or categories. In MTS, selection of important features or variables to improve classification accuracy is done using Signal-to-Noise (S/N) ratios and Orthogonal Arrays (OAs). \\{OAs\\} has been reviewed for limitations in handling large number of variables. Secondly, penalty for over-fitting or regularization is not included in the feature selection process for the MTS classifier. Besides, there is scope to enhance the utility of MTS to a classification-cum-causality analysis method by adding comprehensive information about the underlying process which generated the data. This paper proposes to select variables based on maximization of degree-of-dependency between Subset of System Variables (SSVs) and system classes or categories (R). Degree-of-dependency, which reflects goodness-of-model and hence goodness of the SSV, is measured by conditional probability of system states on subset of variables. Moreover, a suitable regularization factor equivalent to L0 norm is introduced in an optimization problem which jointly maximizes goodness-of-model and effect of regularization. Dependency between \\{SSVs\\} and R is modeled via the equivalent sets of Rough Set Theory. Two new variants of MTS classifier are developed and their performance in terms of accuracy of classification is evaluated on test datasets from five case studies. The proposed variants of MTS are observed to be performing better than existing MTS methods and other classification techniques found in literature.

Ashif Sikandar Iquebal; Avishek Pal; Darek Ceglarek; Manoj Kumar Tiwari

2014-01-01T23:59:59.000Z

373

Detailed comparative study and a mechanistic model of resuspension of spherical particles from rough and smooth surfaces  

E-Print Network [OSTI]

Resuspension of solid particles by a tornado-like vortex from surfaces of different roughness is studied using a three-dimensional particle tracking velocimetry (3D-PTV) method. By utilizing the three-dimensional information on particle positions, velocities and accelerations before, during and after the resuspension (lift-off) event, we demonstrate that the resuspension efficiency is significantly higher from the rough surface, and propose a mechanistic model of this peculiar effect. The results indicate that for all Reynolds numbers tested, the resuspension rate, as well as particle velocities and accelerations, are higher over the rough surface, as compared to the smooth counterpart. The results and the model can help to improve modeling and analysis of resuspension rates in engineering and environmental applications.

Shnapp, Ron

2014-01-01T23:59:59.000Z

374

Numerical modelling of a magnetic fluid-based squeeze film between rotating transversely rough curved circular plates  

Science Journals Connector (OSTI)

An attempt has been made to analyse the behaviour of a magnetic fluid-based squeeze film between two curved rough rotating circular plates when the curved upper plate lying along a surface determined by hyperbolic function approaches the curved lower plate along the surface governed by a secant function. The concerned Reynolds equation is solved with appropriate boundary conditions in dimensionless form to get the pressure distribution. The results show that the bearing system records a considerably enhanced performance as compared to that of the bearing system working with a conventional lubricant. This investigation suggests that although the bearing suffers owing to transverse roughness in general, there are some scopes for getting a relatively better performance in the case of negatively skewed roughness by properly choosing curvature parameters and the rotation ratio. Interestingly enough this positive effect further enhances especially when negative variance is involved.

G.M. Deheri; Nikhilkumar Abhangi

2011-01-01T23:59:59.000Z

375

MINIMIZING WASTE AND COST IN DISPOSITION OF LEGACY RESIDUES  

SciTech Connect (OSTI)

Research is being conducted at the Los Alamos National Laboratory (LANL) which is directed toward development of a quantitative basis for disposition of actinide-bearing process residues (both legacy residues and residues generated from ongoing programmatic operations). This research is focused in two directions: (1) identifying minimum negative consequence (waste, dose, cost) dispositions working within regulatory safeguards termination criteria, and (2) evaluating logistics/consequences of across-the-board residue discards such as authorized at Rocky Flats under a safeguards termination variance. The first approach emphasizes Laboratory commitments to environmental stewardship, worker safety, and fiscal responsibility. This approach has been described as the Plutonium Disposition Methodology (PDM) in deference to direction provided by DOE Albuquerque. The second approach is born of the need to expedite removal of residues from storage for programmatic and reasons and residue storage safety concerns. Any disposition path selected must preserve the legal distinction between residues as Special Nuclear Material (SNM) and discardable materials as waste in order to insure the continuing viability of Laboratory plutonium processing facilities for national security operations.

J. BALKEY; M. ROBINSON

2001-05-01T23:59:59.000Z

376

Characterisation of rotary kiln residues from the pyrolysis of shredder residues: Issues with lead  

Science Journals Connector (OSTI)

Stringent legislation is being to be implemented across Europe relating to heavy metal contamination into the environment. This study thus focuses on developing a method for reliably determining the lead content of automotive shredder residue (ASR). The material is first pyrolysed to remove organic fractions. Different analytical methods were then used to investigate the concentrations of heavy metals in the burned char, which varies from chunks of metals in larger sized fractions to fine powders of mostly non-metals. By considering results from ICP-MS, EDXRF, WDXRF and a portable EDXRF, it was found that varying values were obtained but that consistent ‘consensus values’ could be determined. Such ‘consensus’ values of lead, copper, iron and zinc are thus reported, and show that properly depolluted \\{ELVs\\} have significantly lower lead levels than normal shredder residue (SR) feed ?8000 ppm versus 16,000 ppm. The finest fraction, <850 ?m, makes up around half of the mass of the SR and has only 2700 ppm and 5400 ppm lead concentration values for depolluted \\{ELVs\\} and normal SR, respectively, making it of interest for further work to develop uses as a feed in other industries.

Osric T. Forton; Lucas McGrady; M.M. Singh; E.R.M. Taylor; Norman R. Moles; Marie K. Harder

2007-01-01T23:59:59.000Z

377

Combined short scale roughness and surface dielectric function gradient effects on the determination of tip-sample force in atomic force microscopy  

SciTech Connect (OSTI)

The contribution of tip roughness to the van der Waals force between an atomic force microscopy probe tip and the sample is calculated using the multilayer effective medium model, which allows us to consider the relevant case of roughness characterized by correlation length and amplitude in the nanometer scale. The effect of the surface dielectric function gradient is incorporated in the tip-sample force model. It is concluded that for rms roughness in the few nanometers range the effect of short scale tip roughness is quite significant.

Gusso, André, E-mail: gusso@metal.eeimvr.uff.br [Departamento de Ciências Exatas-EEIMVR, Universidade Federal Fluminense, Volta Redonda, RJ 27255-125 (Brazil)] [Departamento de Ciências Exatas-EEIMVR, Universidade Federal Fluminense, Volta Redonda, RJ 27255-125 (Brazil)

2013-11-11T23:59:59.000Z

378

Pesticide and heavy metal residues in Louisiana river otter  

E-Print Network [OSTI]

chromatography. Hercury levels averaged 1. 29 porn in liver (N=100) and 3. 88 ppm in hair (N=24), Liver and hair mercury residues were highly correlated (r=0. 98). Fetal whole body mercury levels averaged 0. 07 ppm (N=4). Fetal and maternal mercury levels... correlations between ani- mal weights and residue levels were observed for mercury, dieldrin, and mirex. There were no apparent relationships between residue levels of mercury and liver weight or liver:carcass weight ratio. There was no significant...

Beck, Debra Lynn

2012-06-07T23:59:59.000Z

379

Automobile Shredder Residue (ASR) destruction in a plasma gasification reactor  

Science Journals Connector (OSTI)

Test results on Automobile Shredder Residue (ASR), or car fluff, demonstrated destruction efficiency and safe conversion to synthesis gas and a glass residue, in a plasma gasification system. The synthesis gas consists primarily of hydrogen and carbon monoxide in the range between 20 and 22 vol-% respectively, or 45 and 55 vol-% dry basis, when corrected for nitrogen. In dry reforming operation, carbon dioxide conversion approached 90%. The system is designed to work with oxygen in autothermal conditions, reducing thus the electric power requirement for the plasma reactor. The vitrified residue leach rate makes the product suitable for construction works.

Marco G. Tellini; Paolo Centola; James A. Batdorf; William J. Quapp

2007-01-01T23:59:59.000Z

380

A manual for implementing residual radioactive material guidelines  

SciTech Connect (OSTI)

This manual presents information for implementing US Department of Energy (DOE) guidelines for residual radioactive material at sites identified by the Formerly Utilized Sites Remedial Action Program (FUSRAP) and the Surplus Facilities Management Program (SFMP). It describes the analysis and models used to derive site-specific guidelines for allowable residual concentrations of radionuclides in soil and the design and use of the RESRAD computer code for calculating guideline values. It also describes procedures for implementing DOE policy for reducing residual radioactivity to levels that are as low as reasonably achievable. 36 refs., 16 figs, 22 tabs.

Gilbert, T.L.; Yu, C.; Yuan, Y.C.; Zielen, A.J.; Jusko, M.J.; Wallo, A. III

1989-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Vibrant fault diagnosis for hydroelectric generator units with a new combination of rough sets and support vector machine  

Science Journals Connector (OSTI)

The fault diagnosis for hydroelectric generator unit (HGU) is significant to prevent dangerous accidents from occurring and to improve economic efficiency. The faults of HGU involve overlapping fault patterns which may denote a kind of faults in the ... Keywords: Fault diagnosis, Hydroelectric generator unit, Rough sets, Support vector machine

Xiaoyuan Zhang; Jianzhong Zhou; Jun Guo; Qiang Zou; Zhiwei Huang

2012-02-01T23:59:59.000Z

382

Variation of urban momentum roughness length with land use in the upwind source area, as observed in two UK cities.  

E-Print Network [OSTI]

in two UK cities. G.G.Rooney (gabriel.rooney@metoffice.com), I.D.Longley and J.F.Barlow Met Office Field fraction of different cover types, Birmingham 20 4 roughness lengths against wind direction, Salford 21 5 in building wakes to its blended final state at some height above the urban canopy, for a real city, tests

Reading, University of

383

Shliomis model-based magnetic squeeze film in rotating rough curved circular plates: a comparison of two different porous structures  

Science Journals Connector (OSTI)

This study aims to analyse the effect of different porous structures on the performance of a Shliomis model-based magnetic squeeze film in rotating rough porous curved circular plates. For porous structures Kozeny-Carman's formulation and Irmay's model have been adopted. A Shliomis model-based magnetic fluid flow is considered. The stochastically averaging models of Christensen and Tonder have been used for characterising the effect of transverse roughness. The associated stochastically averaged Reynolds type equation is solved to obtain the pressure distribution leading to the calculation of the load carrying capacity. The results presented in graphical form show that the adverse effect of transverse roughness can be compensated by the positive effect of magnetisation in the case of negatively skewed roughness, suitably choosing the rotation ratio and the curvature parameters. Further, this compensation appears to be more in the case of Kozeny-Carman's formulation as compared to that of Irmay's model, which makes the Kozeny-Carman's model a superior choice.

Jimit R. Patel; Gunamani Deheri

2014-01-01T23:59:59.000Z

384

Wind assessment in complex terrain with the numeric model Aiolos implementation of the influence of roughness changes and stability  

E-Print Network [OSTI]

Wind assessment in complex terrain with the numeric model Aiolos ­ implementation of the influence of roughness changes and stability Ulrich Focken, Detlef Heinemann, Hans-Peter Waldl Department of Energy (EWA) gives good results for the wind potential estimation in flat areas. But besides many

Heinemann, Detlev

385

Sustainable Heat and Electricity from Sugarcane Residues Gasification in Brazil  

Science Journals Connector (OSTI)

Sugarcane residues, in the form of bagasse and cane tops and leaves, represent a large renewable biomass energy resource in Brazil. Bagasse is currently used to satisfy the energy needs of the sugar and alcohol i...

Ausilio Bauen

2002-01-01T23:59:59.000Z

386

Infrared thermography to detect residual ceramic in gas turbine blades  

Science Journals Connector (OSTI)

A serious problem in the production of gas turbine blades is the detection of residual ceramic cores inside the cooling passages; in ... the presence of even small ceramic pieces affects turbine performance and m...

C. Meola; G.M. Carlomagno; M. Di Foggia; O. Natale

2008-06-01T23:59:59.000Z

387

Erratum to: Crop Residue Considerations for Sustainable Bioenergy Feedstock Supplies  

Science Journals Connector (OSTI)

Two regrettable errors occurred in citing a critical funding source for the multi-location research summarized in the 2014 article entitled “Crop Residue Considerations for Sustainable Bioenergy Feedstock Supplie...

Douglas L. Karlen; Jane M. F. Johnson

2014-09-01T23:59:59.000Z

388

FIXED PRICE RESIDUAL FUNDS POLICY Policy dated March 29, 1999  

E-Print Network [OSTI]

FIXED PRICE RESIDUAL FUNDS POLICY Policy dated March 29, 1999 After completion of all deliverables required under a fixed-price award, after costs in fulfilling the requirements of the award have been

Weston, Ken

389

Tropical Residual Soils Geological Society Engineering Group Working Party Report  

Science Journals Connector (OSTI)

...Clanan, M. B. 1982. Settlement of a tower on residual soil. Proceedings of Conference...i trench [ ] ~-~=___ ,~'A dolly ;' ;i i [ l Jacking undisturbed core-cutter sampler. excavation...

390

Modeling, Optimization and Economic Evaluation of Residual Biomass Gasification  

E-Print Network [OSTI]

Gasification is a thermo-chemical process which transforms biomass into valuable synthesis gas. Integrated with a biorefinery it can address the facility’s residue handling challenges and input demands. A number of feedstock, technology, oxidizer...

Georgeson, Adam

2012-02-14T23:59:59.000Z

391

Present safeguards in Great Britain against pesticide residues and hazards  

Science Journals Connector (OSTI)

A description of the direct legislative measures taken in Great Britain to protect the public from contamination of food by pesticide residues would be brief for, today, but two regulations exist, specifying t...

H. Martin

1963-01-01T23:59:59.000Z

392

An urban infill : a residual site in Boston  

E-Print Network [OSTI]

This thesis is concerned with the treatment of residual sites in the context of the urban environment and in particular with the wounds inflicted by the passage of the Massachusetts Turnpike through the city of Boston. The ...

Savvides, Andreas L. (Andreas Loucas)

1996-01-01T23:59:59.000Z

393

RetroFILL : residual spaces as urban infill  

E-Print Network [OSTI]

In any city there are small slivers and chunks of awkward spaces - in between buildings, occupying edge conditions, not large enough to warrant many forms of traditional use - which can be termed residual. These areas of ...

Kobel, Marika

2010-01-01T23:59:59.000Z

394

RELATIVE RESIDUAL BOUNDS FOR INDEFINITE SINGULAR HERMITIAN MATRICES  

E-Print Network [OSTI]

residual bounds, indefinite Hermitian matrix, eigen- values, perturbation theory, relative perturbations. These theorems are proper generalization of results on a semi-definite Hermitian matrix SIAM Journal on Matrix

Truhar, Ninoslav

395

IDC Reengineering Phase 2 & 3 Rough Order of Magnitude (ROM) Cost Estimate Summary (Leveraged NDC Case).  

SciTech Connect (OSTI)

Sandia National Laboratories has prepared a ROM cost estimate for budgetary planning for the IDC Reengineering Phase 2 & 3 effort, based on leveraging a fully funded, Sandia executed NDC Modernization project. This report provides the ROM cost estimate and describes the methodology, assumptions, and cost model details used to create the ROM cost estimate. ROM Cost Estimate Disclaimer Contained herein is a Rough Order of Magnitude (ROM) cost estimate that has been provided to enable initial planning for this proposed project. This ROM cost estimate is submitted to facilitate informal discussions in relation to this project and is NOT intended to commit Sandia National Laboratories (Sandia) or its resources. Furthermore, as a Federally Funded Research and Development Center (FFRDC), Sandia must be compliant with the Anti-Deficiency Act and operate on a full-cost recovery basis. Therefore, while Sandia, in conjunction with the Sponsor, will use best judgment to execute work and to address the highest risks and most important issues in order to effectively manage within cost constraints, this ROM estimate and any subsequent approved cost estimates are on a 'full-cost recovery' basis. Thus, work can neither commence nor continue unless adequate funding has been accepted and certified by DOE.

Harris, James M.; Prescott, Ryan; Dawson, Jericah M.; Huelskamp, Robert M.

2014-11-01T23:59:59.000Z

396

A classification approach for less popular webpages based on latent semantic analysis and rough set model  

Science Journals Connector (OSTI)

Abstract Nowadays, with the explosive growth of web information, the webpage classification faces great challenge. Computers have difficulty in understanding the semantic meaning of textual or non-textual webpages. Fortunately, Web 2.0 based collaborative tagging system brings new opportunities to solve this problem. It abstracts structured tags from unstructured content in webpages. However, large numbers of webpages on the Internet are less popular. Their tagging information is sparse, which makes their topic unclear and leads to ambiguous classification. Illuminated by the “ambiguous classification”, we name the less popular webpage “hesitant webpage”. In this paper, we propose an advanced approach for hesitant webpages classification. Firstly, hesitant webpages are divided into bridges, hubs and attached webpages according to their roles on the Internet. Secondly, attached webpages are classified by mining and extending their information in two perspectives. One is the latent semantic analysis (LSA) which is applied to fully explore the semantic meaning of sparse tags. It promotes accurate cognition of webpages semantically close to attached webpages. Another is the proposed density-relation-based rough set model which measures the affiliation degree of attached webpages in different categories. Experiment on real data shows that our approach effectively classifies the hesitant webpages base on the semantic meaning.

Jun Wang; Jiaxu Peng; Ou Liu

2015-01-01T23:59:59.000Z

397

Robust Ordinal Regression for Dominance-based Rough Set Approach to multiple criteria sorting  

Science Journals Connector (OSTI)

Abstract We present a new multiple criteria sorting method deriving from Dominance-based Rough Set Approach (DRSA). The preference information supplied by the Decision Maker (DM) is a set of possibly imprecise and inconsistent assignment examples on a subset of reference alternatives relatively well-known to the DM. To structure the data we use DRSA, and subsequently, represent the assignment examples by all minimal sets of rules covering all alternatives from the lower approximations of class unions. Such a set of rules is called minimal-cover set – it is one of the instances of the preference model compatible with DM’s preference information. In this way, we implement the principle of Robust Ordinal Regression (ROR) to decision rule preference model. For each alternative, we derive the necessary and possible assignments specifying the range of classes to which the alternative is assigned by all or at least one compatible set of rules, respectively, as well as class acceptability indices. We also introduce the notion of a representative compatible minimal-cover set of rules whose selection builds on the results of ROR, addressing the robustness concern. Application of the approach is demonstrated by classifying 69 land zones in 4 classes representing different risk levels.

Mi?osz Kadzi?ski; Salvatore Greco; Roman S?owi?ski

2014-01-01T23:59:59.000Z

398

Incremental feature selection based on rough set in dynamic incomplete data  

Science Journals Connector (OSTI)

Abstract Feature selection plays a vital role in many areas of pattern recognition and data mining. The effective computation of feature selection is important for improving the classification performance. In rough set theory, many feature selection algorithms have been proposed to process static incomplete data. However, feature values in an incomplete data set may vary dynamically in real-world applications. For such dynamic incomplete data, a classic (non-incremental) approach of feature selection is usually computationally time-consuming. To overcome this disadvantage, we propose an incremental approach for feature selection, which can accelerate the feature selection process in dynamic incomplete data. We firstly employ an incremental manner to compute the new positive region when feature values with respect to an object set vary dynamically. Based on the calculated positive region, two efficient incremental feature selection algorithms are developed respectively for single object and multiple objects with varying feature values. Then we conduct a series of experiments with 12 UCI real data sets to evaluate the efficiency and effectiveness of our proposed algorithms. The experimental results show that the proposed algorithms compare favorably with that of applying the existing non-incremental methods.

Wenhao Shu; Hong Shen

2014-01-01T23:59:59.000Z

399

Engineering Application Way of Faults Knowledge Discovery Based on Rough Set Theory  

Science Journals Connector (OSTI)

For the knowledge acquisition puzzle of intelligence decision-making technology in mechanical industry, to use the Rough Set Theory (RST) as a kind of tool to solve the puzzle was researched. And the way to realize the knowledge discovery in engineering application is explored. A case extracting out the knowledge rules from a concise data table shows out some important information. It is that the knowledge discovery similar to the mechanical faults diagnosis is an item of complicated system engineering project. In where, first of all-important tasks is to preserve the faults knowledge into a table with data mode. And the data must be derived from the plant site and should also be as concise as possible. On the basis of the faults knowledge data obtained so, the methods and algorithms to process the data and extract the knowledge rules from them by means of RST can be processed only. The conclusion is that the faults knowledge discovery by the way is a process of rising upward. But to develop the advanced faults diagnosis technology by the way is a large-scale knowledge engineering project for long time. Every step in which should be designed seriously according to the tool's demands firstly. This is the basic guarantees to make the knowledge rules obtained have the values of engineering application and the studies have scientific significance. So, a general framework is designed for engineering application to go along the route developing the faults knowledge discovery technology.

Zhao Rongzhen; Li Chao; Dneg Linfeng

2011-01-01T23:59:59.000Z

400

MMeR: an algorithm for clustering heterogeneous data using rough set theory  

Science Journals Connector (OSTI)

Several cluster analysis techniques have been developed so far to group objects having similar characteristics. Clustering of categorical data is more challenging than that of numerical data. Most of the early cluster analysis techniques face problems due to the fact that much of the data contained in today's databases is categorical in nature. This necessitated the development of some algorithms for clustering categorical data. Uncertainty is an integral part of databases. The algorithms put forth either lack the capability to handle uncertainty or do not reach a steady state in a few iterations, which gives rise to the stability issues. Recently, an algorithm, termed MMR was proposed (Parmar et al., 2007), which uses the rough set theory to deal with the above problems in clustering categorical data. In this paper, we modified MMR to develop an improved algorithm and call it MMeR. This takes care of both numerical and categorical data simultaneously besides handling uncertainty. Also, this new algorithm provides much better performance than most of the existing algorithms including MMR. Some well known data sets are taken to test and illustrate the superiority of MMeR over most of the existing algorithms.

Prakash Kumar; B.K. Tripathy

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Systematic analysis of Persson's contact mechanics theory of randomly rough elastic surfaces  

E-Print Network [OSTI]

We systematically check explicit and implicit assumptions of Persson's contact mechanics theory. It casts the evolution of the pressure distribution ${\\rm Pr}(p)$ with increasing resolution of surface roughness as a diffusive process, in which resolution plays the role of time. The tested key assumptions of the theory are: (a) the diffusion coefficient is independent of pressure $p$, (b) the diffusion process is drift-free at any value of $p$, (c) the point $p=0$ acts as an absorbing barrier, i.e., once a point falls out of contact, it never reenters again, (d) the Fourier component of the elastic energy is only populated if the appropriate wave vector is resolved, and (e) it no longer changes when even smaller wavelengths are resolved. Using high-resolution numerical simulations, we quantify deviations from these approximations and find quite significant discrepancies in some cases. For example, the drift becomes substantial for small values of $p$, which typically represent points in real space close to a contact line. On the other hand, there is a significant flux of points reentering contact. These and other identified deviations cancel each other to a large degree, resulting in an overall excellent description for contact area, contact geometry, and gap distribution functions. Similar fortuitous error cancellations cannot be guaranteed under different circumstances, for instance when investigating rubber friction. The results of the simulations may provide guidelines for a systematic improvement of the theory.

Wolf B. Dapp; Nikolay Prodanov; Martin H. Müser

2014-06-24T23:59:59.000Z

402

Effect of Surface Roughness of Steels on Oxide Layer Formation in a Liquid Lead-Bismuth Flow  

SciTech Connect (OSTI)

Self-healed oxide layer formation on steel surfaces in liquid lead bismuth (Pb-Bi) may be effective to improve the compatibility problem for the development of the Pb-Bi cooled FBR and the ADS with a PB-Bi target. The growth, stability and property of the oxide layer may depend on the roughness of the substrate surface. The effect of convex part and dent part of the steel surfaces on the property of the oxide layer in a Pb-Bi flow was investigated for the steels which had the surface of smooth, rough and their middle roughness. The steels were exposed into a Pb- Bi flow at the temperature of 550 deg. C, the temperature difference of 150 deg. C, the flow velocity of 1 m/s and the oxygen concentration of 1.7x10{sup -8} wt% for 500 and 1,000 hours. The results showed that the initial surface roughness influenced on the oxide layer formation during the exposure. The oxide layer was cracked at the convex part of the surface. On the contrary, few cracks existed and the oxide layer remained at the dent part. That indicated thickened oxide layer caused stress due to the oxide growth, and the stress concentrated at the convex part. Few cracks appeared in a compact oxide layer which was formed on the rough surface of 9Cr steel and detached from the substrate. This was possibly caused by the stop of oxide layer growth since a metal element was not supplied from the substrate. (authors)

KONDO, Masatoshi [Tokyo Institute of Technology, Department of Nuclear Engineering 2-12-1, O-okayama, Meguro-ku, Tokyo, 152-8550 (Japan); TAKAHASHI, Minoru [Tokyo Institute of Technology, Research Laboratory for Nuclear Reactors, 2-12-1, O-okayama, Meguro-ku, Tokyo, 152-8550 (Japan); YOSHIDA, Susumu [Tokyo Institute of Technology, Research Laboratory for Nuclear Reactors, 2-12-1, O-okayama, Meguro-ku, Tokyo, 152-8550 (Japan); SAWADA, Naoki [Tokyo Institute of Technology, Research Laboratory for Nuclear Reactors, 2-12-1, O-okayama, Meguro-ku, Tokyo, 152-8550 (Japan)

2004-07-01T23:59:59.000Z

403

GEOCHEMICAL TESTING AND MODEL DEVELOPMENT - RESIDUAL TANK WASTE TEST PLAN  

SciTech Connect (OSTI)

This Test Plan describes the testing and chemical analyses release rate studies on tank residual samples collected following the retrieval of waste from the tank. This work will provide the data required to develop a contaminant release model for the tank residuals from both sludge and salt cake single-shell tanks. The data are intended for use in the long-term performance assessment and conceptual model development.

CANTRELL KJ; CONNELLY MP

2010-03-09T23:59:59.000Z

404

Residual strain measurements on drill cores from Reydarfjordur, Iceland  

E-Print Network [OSTI]

RESIDUAL STRAIN MEASUREMENTS ON DRILL CORES FROM REYDARFJORDUR, ICELAND A Thesis BESIM BASLANGIC Submitted to the Office oi' Graduate Studies of Texas A&M University in partial fulfillment of the requirements I' or the degree of MAST...'ER OF SCIENCE May 1989 Major Subject: Geophysics RESIDUAL STRAIN MEASLREMENTS ON DRILL CORES FROM REYDARFJORDUR, ICELAVD A Thesis BESIM BASLANGIC Approved as to style and content by: Earl R. Hoskins (Chair of Committee) Richard L. Carlson (Member...

Baslangic, Besim

2012-06-07T23:59:59.000Z

405

Opportunities and Challenges for Nondestructive Residual Stress Assessment  

SciTech Connect (OSTI)

For a long time, nondestructive residual stress assessment has been one of the greatest opportunities as well as one of the greatest challenges for the NDE community, and probably it will remain so in the foreseeable future. The most critical issue associated with nondestructive residual stress assessment seems to be that of selectivity. Numerous NDE methods have been found to be sufficiently sensitive to the presence of residual stress, but unfortunately also rather sensitive to other spurious variations that usually accompany residual stresses, such as anisotropic texture, microstructural inhomogeneity, plastic deformation, etc., which could interfere with, or even overshadow, the elastic strain caused by the sought residual stress. The only sufficiently selective NDE method that is more or less immune from these spurious effects is X-ray diffraction measurement, which however does not have the required penetration depth in most applications unless high-energy neutron radiation is used. It is timely for the community to sit back and ask where we are in this important area. This paper presents an overview of the various indirect techniques that have been used to measure residual stress in the past. It is shown that traditional techniques have a number of limitations, which have spurred several recent research programs. Some of the new techniques that are presently being examined in the NDE community are reviewed and the current status of these research efforts is assessed.

Nagy, P. B. [Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, Ohio 45221-0070 (United States)

2006-03-06T23:59:59.000Z

406

Hanford tank residual waste – contaminant source terms and release models  

SciTech Connect (OSTI)

Residual waste is expected to be left in 177 underground storage tanks after closure at the U.S. Department of Energy’s Hanford Site in Washington State (USA). In the long term, the residual wastes represent a potential source of contamination to the subsurface environment. Residual materials that cannot be completely removed during the tank closure process are being studied to identify and characterize the solid phases and estimate the release of contaminants from these solids to water that might enter the closed tanks in the future. As of the end of 2009, residual waste from five tanks has been evaluated. Residual wastes from adjacent tanks C-202 and C-203 have high U concentrations of 24 and 59 wt%, respectively, while residual wastes from nearby tanks C-103 and C-106 have low U concentrations of 0.4 and 0.03 wt%, respectively. Aluminum concentrations are high (8.2 to 29.1 wt%) in some tanks (C-103, C-106, and S-112) and relatively low (<1.5 wt%) in other tanks (C-202 and C-203). Gibbsite is a common mineral in tanks with high Al concentrations, while non-crystalline U-Na-C-O-P±H phases are common in the U-rich residual wastes from tanks C-202 and C-203. Iron oxides/hydroxides have been identified in all residual waste samples studied to date. Contaminant release from the residual wastes was studied by conducting batch leach tests using distilled deionized water, a Ca(OH)2-saturated solution, or a CaCO3-saturated water. Uranium release concentrations are highly dependent on waste and leachant compositions with dissolved U concentrations one or two orders of magnitude higher in the tests with high U residual wastes, and also higher when leached with the CaCO3-saturated solution than with the Ca(OH)2-saturated solution. Technetium leachability is not as strongly dependent on the concentration of Tc in the waste, and it appears to be slightly more leachable by the Ca(OH)2-saturated solution than by the CaCO3-saturated solution. In general, Tc is much less leachable (<10 wt% of the available mass in the waste) than previously predicted. This may be due to the coprecipitation of trace concentrations of Tc in relatively insoluble phases such as Fe oxide/hydroxide solids.

Deutsch, William J.; Cantrell, Kirk J.; Krupka, Kenneth M.; Lindberg, Michael J.; Serne, R. Jeffrey

2011-08-23T23:59:59.000Z

407

Residual life prediction methods for gas turbine components  

Science Journals Connector (OSTI)

The use of fracture mechanics in predicting the life of turbine components is reviewed with emphasis on the surface crack and R ratio effects. Several examples of life methods development and verification are reported. The described methodology, which does not directly model crack-closure behavior, accurately predicts the growth of physically short surface cracks and situations where oxide- and roughness-induced closure are expected to occur.

R.H. Van Stone

1988-01-01T23:59:59.000Z

408

Effects of grit roughness and pitch oscillations on the S810 airfoil  

SciTech Connect (OSTI)

An S810 airfoil model was tested in The Ohio State University Aeronautical and Astronautical Research Laboratory 3 x 5 subsonic wind tunnel under steady state and unsteady conditions. The test defined baseline conditions for steady state angles of attack from -20{degrees} to +40{degrees} and examined unsteady behavior by oscillating the model about its pitch axis for three mean angles, three frequencies, and two amplitudes. For all cases, Reynolds numbers of 0.75, 1, 1.25, and 1.5 million were used. In addition, the above conditions were repeated after the application of leading edge grit roughness (LEGR) to determine contamination effects on the airfoil performance. Baseline steady state results of the S810 testing showed a maximum lift coefficient of 1.15 at 15.2{degrees}angle of attack. The application of LEGR reduced the maximum lift coefficient by 12% and increased the 0.0085 minimum drag coefficient value by 88%. The zero lift pitching moment of -0.0286 showed a 16% reduction in magnitude to -0.0241 with LEGR applied. Data were also obtained for two pitch oscillation amplitudes: {plus_minus}5.5{degrees} and {plus_minus}10{degrees}. The larger amplitude consistently gave a higher maximum lift coefficient than the smaller amplitude and both sets of unsteady maximum lift coefficients were greater than the steady state values. Stall was delayed on the airfoil while the angle of attack was increasing, thereby causing an increase in maximum lift coefficient. A hysteresis behavior was exhibited for all the unsteady test cases. The hysteresis loops were larger for the higher reduced frequencies and for the larger amplitude oscillations. In addition to the hysteresis behavior, an unusual feature of these data were a sudden increase in the lift coefficient where the onset of stall was expected. As in the steady case, the effect of LEGR in the unsteady case was to reduce the lift coefficient at high angles of attack.

Ramsay, R.R.; Hoffman, M.J.; Gregorek, G.M. [Ohio State Univ., Columbus, OH (United States)

1996-01-01T23:59:59.000Z

409

Effects of grit roughness and pitch oscillations on the NACA 4415 airfoil  

SciTech Connect (OSTI)

A NACA 4415 airfoil model was tested in The Ohio State University Aeronautical and Astronautical Research Laboratory 3 x 5 subsonic wind tunnel under steady state and unsteady conditions. The test defined baseline conditions for steady state angles of attack from {minus}10{degree} to +40{degree} and examined unsteady behavior by oscillating the model about its pitch axis for three mean angles, three frequencies, and two amplitudes. For all cases, Reynolds numbers of 0.75, 1, 1.25, and 1.5 million were used. In addition, these were repeated after the application of leading edge grit roughness (LEGR) to determine contamination effects on the airfoil performance. Steady state results of the NACA 4415 testing at Reynolds number of 1.25 million showed a baseline maximum lift coefficient of 1.30 at 12.3{degree} angle of attack. The application of LEGR reduced the maximum lift coefficient by 20% and increased the 0.0090 minimum drag coefficient value by 62%. The zero lift pitching moment of {minus}0.0967 showed a 13% reduction in magnitude to {minus}0.0842 with LEGR applied. Data were also obtained for two pitch oscillation amplitudes: {+-}5.5{degree} and {+-}10{degree}. The larger amplitude consistently gave a higher maximum lift coefficient than the smaller amplitude, and both unsteady maximum lift coefficients were greater than the steady state values. Stall is delayed on the airfoil while the angle of attack is increasing, thereby causing an increase in maximum lift coefficient. A hysteresis behavior was exhibited for all the unsteady test cases. The hysteresis loops were larger for the higher reduced frequencies and for the larger amplitude oscillations. As in the steady case, the effect of LEGR in the unsteady case was to reduce the lift coefficient at high angles of attack. In addition, with LEGR, the hysteresis behavior persisted into lower angles of attack than for the clean case.

Hoffmann, M.J.; Reuss Ramsay, R.; Gregorek, G.M. [Ohio State Univ., Columbus, OH (United States)

1996-07-01T23:59:59.000Z

410

A critical review of developments in the pyrolysis of automotive shredder residue  

Science Journals Connector (OSTI)

Worldwide, automotive shredder residue (ASR) is considered an increasingly problematic mixture of materials that needs the development of a processing solution. Pyrolysis is a process that has many advantages to offer, but despite many studies and developments in recent years at various levels of commercialisation, it is still generally considered unproven for this purpose. This paper critically considers developmental work published in the field, presents new results, and suggests that a major reason for the lack of development is the complexity of the landscape created by strong, competing, economic, legislative, environmental and commercial drivers, which in turn make it unclear which products and processes are optimal. This is made doubly complex by the natural variation in the material composition of ASR, with contaminants that can critically affect its potential fate to anywhere in the range from hazardous waste, to energy source, to useful raw material for major cement or steel industries. New data on critical factors such as levels of chlorine and metals in raw and pyrolysed ASR are presented, alongside a much-needed summary of previously published values from references that are often difficult to source. The summaries emphasise the variation in the material, but also indicate rough boundaries for values, which are needed for the design of any potentially successful process. It is suggested that the heterogeneity seen across ASR types implies that specialised processing of SR on its own is unlikely. It is pointed out that small-scale processes that could be suitable for local requirements should be considered for development as they could be able to optimise a process sufficiently to make it viable, e.g. specialised local waste streams of paper pulp and a particular fraction of SR.

Marie K. Harder; Osric Tening Forton

2007-01-01T23:59:59.000Z

411

Measuring depth profiles of residual stress with Raman spectroscopy  

SciTech Connect (OSTI)

Knowledge of the variation of residual stress is a very important factor in understanding the properties of machined surfaces. The nature of the residual stress can determine a part`s susceptibility to wear deformation, and cracking. Raman spectroscopy is known to be a very useful technique for measuring residual stress in many materials. These measurements are routinely made with a lateral resolution of 1{mu}m and an accuracy of 0.1 kbar. The variation of stress with depth; however, has not received much attention in the past. A novel technique has been developed that allows quantitative measurement of the variation of the residual stress with depth with an accuracy of 10nm in the z direction. Qualitative techniques for determining whether the stress is varying with depth are presented. It is also demonstrated that when the stress is changing over the volume sampled, errors can be introduced if the variation of the stress with depth is ignored. Computer aided data analysis is used to determine the depth dependence of the residual stress.

Enloe, W.S.; Sparks, R.G.; Paesler, M.A.

1988-12-01T23:59:59.000Z

412

A rough set-based effective rule generation method for classification with an application in intrusion detection  

Science Journals Connector (OSTI)

In this paper, we use Rough Set Theory (RST) to address the important problem of generating decision rules for data mining. In particular, we propose a rough set-based approach to mine rules from inconsistent data. It computes the lower and upper approximations for each concept, and then builds concise classification rules for each concept satisfying required classification accuracy. Estimating lower and upper approximations substantially reduces the computational complexity of the algorithm. We use UCI ML Repository data sets to test and validate the approach. We also use our approach on network intrusion data sets captured using our local network from network flows. The results show that our approach produces effective and minimal rules and provides satisfactory accuracy.

Prasanta Gogoi; Dhruba K. Bhattacharyya; Jugal K. Kalita

2013-01-01T23:59:59.000Z

413

Generating an indicator for pump impeller damage using half and full spectra, fuzzy preference-based rough sets and PCA  

Science Journals Connector (OSTI)

Parameters that vary monotonically with damage propagation are useful in condition monitoring. However, it is not easy to find such parameters especially for complex systems like pumps. A method using half and full spectra, fuzzy preference-based rough sets and principal component analysis (PCA) is proposed to generate such an indicator for tracking impeller damage in a centrifugal slurry pump. Half and full spectra are used for extracting features related to pump health status. A fuzzy preference-based rough set model is employed in the process of selecting features reflecting the damage propagation monotonically. PCA is used to condense the features and generate an indicator which represents the damage propagation. The effectiveness of the proposed method is tested using laboratory experimental data. Results show that the indicator generated by the proposed method can clearly and monotonically distinguish the health status of the pump impeller.

Xiaomin Zhao; Ming J Zuo; Tejas H Patel

2012-01-01T23:59:59.000Z

414

A strategy to reduce flooding in grid Fisheye State routing (GFSR) protocol with weighted rough set model using MANET  

Science Journals Connector (OSTI)

A mobile ad hoc networks consist of wireless hosts that may move often. Movement of host results to changes in path. The well-known Fisheye State Routing (FSR) protocol determines a route when no route exists or route breaks. To establish new path from source to destination, it broadcast control packets (route request packets), which increases the network bandwidth consumption and to reduce flooding. As mobile ad hoc networks have limited bandwidth, it is important to reduce the flooding. This paper provides a protocol which uses the weighted rough set model to control the route request packets in the existing FSR protocol in GRID. Weighted rough set theory is a mathematical tool to deal with vagueness, uncertainty and it also considers the importance of the objects (nodes).

S. Nithya Rekha; C. Chandrasekar

2012-01-01T23:59:59.000Z

415

An intelligent oil reservoir identification approach by deploying quantum Levenberg-Marquardt neural network and rough set  

Science Journals Connector (OSTI)

An intelligent identification approach combining the features of parallel computation of quantum Levenberg-Marquardt neural network (Q-LM-NN) and information reduct of rough set is proposed as an improved alternative to common statistical identification methods and single-intelligent-based methods which are unable to attain satisfactory result in engineering applications. This approach has been tested to have better performance on reducing the cost and improving the identification accuracy than other methods in practical oil log applications.

Nanping Liu; Fei Zheng; Kewen Xia

2011-01-01T23:59:59.000Z

416

Evidence for residual elastic strain in deformed natural quartz  

SciTech Connect (OSTI)

Residual elastic strain in naturally deformed, quartz-containing rocks can be measured quantitatively in a petrographic thin section with high spatial resolution using Laue microdiffraction with white synchrotron x-rays. The measurements with a resolution of one micrometer allow the quantitative determination of the deviatoric strain tensor as a function of position within the crystal investigated. The observed equivalent strain values of 800-1200 microstrains represent a lower bound of the actual preserved residual strain in the rock, since the stress component perpendicular to the cut sample surface plane is released. The measured equivalent strain translates into an equivalent stress in the order of {approx} 50 MPa.

Kunz, Martin; Chen, Kai; Tamura,Nobumichi; Wenk, Hans-Rudolf

2009-01-30T23:59:59.000Z

417

A Residual Mass Ballistic Testing Method to Compare Armor Materials or Components (Residual Mass Ballistic Testing Method)  

SciTech Connect (OSTI)

A statistics based ballistic test method is presented for use when comparing multiple groups of test articles of unknown relative ballistic perforation resistance. The method is intended to be more efficient than many traditional methods for research and development testing. To establish the validity of the method, it is employed in this study to compare test groups of known relative ballistic performance. Multiple groups of test articles were perforated using consistent projectiles and impact conditions. Test groups were made of rolled homogeneous armor (RHA) plates and differed in thickness. After perforation, each residual projectile was captured behind the target and its mass was measured. The residual masses measured for each test group were analyzed to provide ballistic performance rankings with associated confidence levels. When compared to traditional V50 methods, the residual mass (RM) method was found to require fewer test events and be more tolerant of variations in impact conditions.

Benjamin Langhorst; Thomas M Lillo; Henry S Chu

2014-05-01T23:59:59.000Z

418

Surface smoothing effect of an amorphous thin film deposited by atomic layer deposition on a surface with nano-sized roughness  

SciTech Connect (OSTI)

Previously, Lau (one of the authors) pointed out that the deposition of an amorphous thin film by atomic layer deposition (ALD) on a substrate with nano-sized roughness probably has a surface smoothing effect. In this letter, polycrystalline zinc oxide deposited by ALD onto a smooth substrate was used as a substrate with nano-sized roughness. Atomic force microscopy (AFM) and cross-sectional transmission electron microscopy (XTEM) were used to demonstrate that an amorphous aluminum oxide thin film deposited by ALD can reduce the surface roughness of a polycrystalline zinc oxide coated substrate.

Lau, W. S., E-mail: liuweicheng@zju.edu.cn; Wan, X.; Xu, Y.; Wong, H. [Zhejiang University, Department of Information Science and Electronic Engineering, No. 38 Zheda Road, Hangzhou 310027 (China)] [Zhejiang University, Department of Information Science and Electronic Engineering, No. 38 Zheda Road, Hangzhou 310027 (China); Zhang, J. [Zhejiang University, Department of Materials Science and Engineering, No. 38 Zheda Road, Hangzhou 310027 (China)] [Zhejiang University, Department of Materials Science and Engineering, No. 38 Zheda Road, Hangzhou 310027 (China); Luo, J. K. [Zhejiang University, Department of Information Science and Electronic Engineering, No. 38 Zheda Road, Hangzhou 310027 (China) [Zhejiang University, Department of Information Science and Electronic Engineering, No. 38 Zheda Road, Hangzhou 310027 (China); Institute of Renewable Energy and Environment Technology, Bolton University, Deane Road, Bolton BL3 5 AB (United Kingdom)

2014-02-15T23:59:59.000Z

419

Residual Fuel Oil Prices, Average - Sales to End Users  

U.S. Energy Information Administration (EIA) Indexed Site

Product/Sales Type: Residual Fuel, Average - Sales to End Users Residual Fuel, Average - Sales for Resale Sulfur Less Than or Equal to 1% - Sales to End Users Sulfur Less Than or Equal to 1% - Sales for Resale Sulfur Greater Than 1% - Sales to End Users Sulfur Greater Than 1% - Sales for Resale Period: Monthly Annual Product/Sales Type: Residual Fuel, Average - Sales to End Users Residual Fuel, Average - Sales for Resale Sulfur Less Than or Equal to 1% - Sales to End Users Sulfur Less Than or Equal to 1% - Sales for Resale Sulfur Greater Than 1% - Sales to End Users Sulfur Greater Than 1% - Sales for Resale Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Show Data By: Product/Sales Type Area Apr-13 May-13 Jun-13 Jul-13 Aug-13 Sep-13 View History U.S. - - - - - - 1983-2013 East Coast (PADD 1) - - - - - - 1983-2013 New England (PADD 1A) - - - - - - 1983-2013 Connecticut - - - - - - 1983-2013 Maine - - - - - - 1983-2013 Massachusetts - - - - - - 1983-2013

420

Automotive shredder residue (ASR) characterization for a valuable management  

Science Journals Connector (OSTI)

Car fluff is the waste produced after end-of-life-vehicles (ELVs) shredding and metal recovery. It is made of plastics, rubber, glass, textiles and residual metals and it accounts for almost one-third of a vehicle mass. Due to the approaching of Directive 2000/53/EC recycling targets, 85% recycling rate and 95% recovery rate in 2015, the implementation of automotive shredder residue (ASR) sorting and recycling technologies appears strategic. The present work deals with the characterization of the shredder residue coming from an industrial plant, representative of the Italian situation, as for annual fluxes and technologies involved. The aim of this study is to characterize ASR in order to study and develop a cost effective and environmentally sustainable recycling system. Results show that almost half of the residue is made of fines and the remaining part is mainly composed of polymers. Fine fraction is the most contaminated by mineral oils and heavy metals. This fraction produces also up to 40% ashes and its LHV is lower than the plastic-rich one. Foam rubber represents around half of the polymers share in car fluff. Moreover, some chemical–physical parameters exceed the limits of some parameters fixed by law to be considered refuse derived fuel (RDF). As a consequence, ASR needs to be pre-treated in order to follow the energy recovery route.

Luciano Morselli; Alessandro Santini; Fabrizio Passarini; Ivano Vassura

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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421

Pyrolysis of automotive shredder residues: a lumped kinetic characterization  

Science Journals Connector (OSTI)

A lumped kinetic model for the pyrolysis of industrial wastes of unknown chemical composition is developed. The model is applied to the pyrolysis of automotive shredder residues (ASRs), studied by means of thermogravimetric and calorimetric analyses, in isothermal and non-isothermal conditions.

Oreste Patierno; Paola Cipriani; Fausto Pochetti; Massimiliano Giona

1998-01-01T23:59:59.000Z

422

Removal of heavy metals from samples of residual sludge  

Science Journals Connector (OSTI)

Nitric acid leaching processes were evaluated for removal of heavy metals from samples of residual sludge from an industrial and municipal wastewater plant. The study showed that an acid:water ratio of 1:1 and a nitric acid concentration of 2 mol 1?1 gave efficient removal of 86.7%, 100% and 100% of copper, nickel and arsenic.

Jose Abrego

1996-01-01T23:59:59.000Z

423

Removal of residual particulate matter from filter media  

DOE Patents [OSTI]

A method for removing residual filter cakes that remain adhered to a filter after typical particulate removal methodologies have been employed, such as pulse-jet filter element cleaning, for all cleanable filters used for air pollution control, dust control, or powder control.

Almlie, Jay C; Miller, Stanley J

2014-11-11T23:59:59.000Z

424

COMMUNICATION Are Residues in a Protein Folding Nucleus  

E-Print Network [OSTI]

COMMUNICATION Are Residues in a Protein Folding Nucleus Evolutionarily Conserved? Yan Yuan Tseng is the hallmark of life. It is important to understand how protein folding and evolution influence each other in protein folding nucleus as measured by experi- mental f-value and selection pressure as measured by v

Dai, Yang

425

Microwave calcination for plutonium immobilization and residue stabilization  

SciTech Connect (OSTI)

In the late 1980`s development was begun on a process using microwave energy to vitrify low level mixed waste sludge and transuranic mixed waste sludge generated in Building 374 at Rocky Flats. This process was shown to produce a dense, highly durable waste form. With the cessation of weapons production at Rocky Flats, the emphasis has changed from treatment of low level and TRU wastes to stabilizaiton of plutonium oxide and residues. This equipment is versatile and can be used as a heat source to calcine, react or vitrify many types of residues and oxides. It has natural economies in that it heats only the material to be treated, significantly reducing cycle times over conventional furnaces. It is inexpensive to operate in that most of the working components remain outside of any necessary contamination enclosure and therefore can easily be maintained. Limited testing has been successfully performed on cerium oxide (as a surrogate for plutonium oxide), surrogate electrorefining salts, surrogate residue sludge and residue ash. Future plans also include tests on ion exchange resins. In an attempt to further the usefullness of this technology, a mobile, self-contained microwave melting system is currently under development and expected to be operational at Rocky Flats Enviromental Technology Site by the 4th quarter of FY96.

Harris, M.J.; Rising, T.L.; Roushey, W.J.; Sprenger, G.S. [Kaiser-Hill Co., Golden, CO (United States)

1995-12-01T23:59:59.000Z

426

Sorption characteristics of polycyclic aromatic hydrocarbons in aluminum smelter residues  

SciTech Connect (OSTI)

High temperature carbon oxidation in primary aluminum smelters results in the release of polycyclic aromatic hydrocarbons (PAH) into the environment. The main source of PAH are the anodes, which are composed of petroleum coke (black carbon, BC) and coal tar pitch. To elucidate the dominant carbonaceous phase controlling the environmental fate of PAH in aluminum smelter residues (coke BC and/or coal tar), the sorptive behavior of PAHs has been determined, using passive samplers and infinite-sink desorption methods. Samples directly from the wet scrubber were studied as well as ones from an adjacent 20-year old storage lagoon and roof dust from the smelter. Carbon-normalized distribution coefficients of native PAHs were 2 orders of magnitude higher than expected based on amorphous organic carbon (AOC)/water partitioning, which is in the same order of magnitude as reported literature values for soots and charcoals. Sorption isotherms of laboratory-spiked deuterated phenanthrene showed strong (about 100 times stronger than AOC) but nonetheless linear sorption in both fresh and aged aluminum smelter residues. The absence of nonlinear behavior typical for adsorption to BC indicates that PAH sorption in aluminum smelter residues is dominated by absorption into the semi-solid coal tar pitch matrix. Desorption experiments using Tenax showed that fresh smelter residues had a relatively large rapidly desorbing fraction of PAH (35-50%), whereas this fraction was strongly reduced (11-16%) in the lagoon and roof dust material. Weathering of the coal tar residue and/or redistribution of PAH between coal tar and BC phases could explain the reduced availability in aged samples. 38 refs., 5 figs., 1 tab.

Gijs D. Breedveld; Emilien Pelletier; Richard St. Louis; Gerard Cornelissen [Norwegian Geotechnical Institute, Oslo (Norway)

2007-04-01T23:59:59.000Z

427

The Effect of Inaccuracies in Weather-Ship Data on Bulk-Derived Estimates of Flux, Stability and Sea-Surface Roughness  

Science Journals Connector (OSTI)

An analytical error analysis (or sensitivity study) is performed for the momentum, heat, and humidity flux estimates made from weather-ship observations by using the bulk flux method. Bulk-derived stability and roughness errors are also examined. ...

Theodore V. Blanc

1986-03-01T23:59:59.000Z

428

A Global Climatology of Albedo, Roughness Length and Stomatal Resistance for Atmospheric General Circulation Models as Represented by the Simple Biosphere Model (SiB)  

Science Journals Connector (OSTI)

Components of the Simple Biosphere Model (SiB) of Sellers et al. were used to generate global monthly fields of surface albedo (0.4–4.0 ?m), roughness length and minimum surface (stomatal) resistance.

J. L. Dorman; P. J. Sellers

1989-09-01T23:59:59.000Z

429

D etailed m odeling ofreactive flow s th rough geologicm edia is necessary to understand a num ber of environm entalproblem s of national  

E-Print Network [OSTI]

Abstract D etailed m odeling ofreactive flow s th rough geologicm edia is necessary to understand porous m edia. PFLOTRAN is built on top of th e PETSc parallelscientific toolk it and uses its efficient

Mills, Richard

430

On the elastic energy and stress correlation in the contact between elastic solids with randomly rough surfaces  

E-Print Network [OSTI]

When two elastic solids with randomly rough surfaces are brought in contact, a very inhomogeneous stress distribution sigma(x) will occur at the interface. Here I study the elastic energy and the correlation function , where sigma(q) is the Fourier transform of sigma(x) and where stands for ensemble average. I relate to the elastic energy stored at the interface, and I show that for self affine fractal surfaces, quite generally \\sim q^{-(1+H)}, where H is the Hurst exponent of the self-affine fractal surface.

B. N. J. Persson

2008-05-06T23:59:59.000Z

431

Frequency-Rank Correlations of Rhodopsin Mutations with Tuned Hydropathic Roughness Based on Self-Organized Criticality  

E-Print Network [OSTI]

The behavior of disease-linked mutations of membrane proteins is especially simple in rhodopsin, where they are well-studied, as they are responsible for retinitis pigmentosa, RP (retinal degeneration). Here we show that the frequency of occurrence of single RP mutations is strongly influenced by their posttranslational survival rates, and that this survival correlates well (82%) with a long-range, non-local hydropathic measure of the roughness of the water interfaces of ex-membrane rhodopsin based on self-organized criticality (SOC). It is speculated that this concept may be generally useful in studying survival rates of many mutated proteins.

J. C. Phillips

2012-01-05T23:59:59.000Z

432

Combing rough set and RBF neural network for large-scale ship recognition in optical satellite images  

Science Journals Connector (OSTI)

Large scale ship recognition in optical remote sensing images is of great importance for many military applications. It aims to recognize the category information of the detected ships for effective maritime surveillance. The contributions of the paper can be summarized as follows: Firstly, based on the rough set theory, the common discernibility degree is used to compute the significance weight of each candidate feature and select valid recognition features automatically; Secondly, RBF neural network is constructed based on the selected recognition features. Experiments on recorded optical satellite images show the proposed method is effective and can get better classification rates at a higher speed than the state of the art methods.

Lu Chunyan; Zou Huanxin; Sun Hao; Zhou Shilin

2014-01-01T23:59:59.000Z

433

Use of a temporal approach to the three-dimensional image formation of a distant rough nonplanar object  

SciTech Connect (OSTI)

A method is proposed to reconstruct three-dimensional images of a distant nonplanar rough object by the speckle pattern of its flat image, which is calculated using the temporal approach based on the time correlation function of probe radiation with a coherence length smaller than the size of the probed object. We analyse the influence of the angular resolution of the optical system, forming an image of the object, and additive noises on the reconstruction accuracy of the object surface shape using the proposed method. (imaging)

Mandrosov, V I [Moscow Institute of Physics and Technology (State University), Dolgoprudnyi, Moscow Region (Russian Federation)

2011-02-28T23:59:59.000Z

434

Residual Stresses in 21-6-9 Stainless Steel Warm Forgings  

SciTech Connect (OSTI)

Forging residual stresses are detrimental to the production and performance of derived machined parts due to machining distortions, corrosion drivers and fatigue crack drivers. Residual strains in a 21-6-9 stainless steel warm High Energy Rate Forging (HERF) were measured via neutron diffraction. The finite element analysis (FEA) method was used to predict the residual stresses that occur during forging and water quenching. The experimentally measured residual strains were used to calibrate simulations of the three-dimensional residual stress state of the forging. ABAQUS simulation tools predicted residual strains that tend to match with experimental results when varying yield strength is considered.

Everhart, Wesley A.; Lee, Jordan D.; Broecker, Daniel J.; Bartow, John P.; McQueen, Jamie M.; Switzner, Nathan T.; Neidt, Tod M.; Sisneros, Thomas A.; Brown, Donald W.

2012-11-14T23:59:59.000Z

435

FIRST DRAFT OF OUTLINE: RPSEA 1 RESIDUAL OIL ZONE RESEARCH  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Commercial Exploitation and the Origin of Commercial Exploitation and the Origin of Residual Oil Zones: Developing a Case History in the Permian Basin of New Mexico and West Texas RPSEA PROJECT NUMBER.FINAL Commercial Exploitation and the Origin of Residual Oil Zones: Developing a Case History in the Permian Basin of New Mexico and West Texas Contract 81.089 08123-19-RPSEA June 28, 2012 Dr. Robert Trentham Director, Center for Energy and Economic Diversification The University of Texas of the Permian Basin Odessa, Texas 79762 L. Steven Melzer Melzer Consulting Midland, Texas 79701 David Vance Arcadis, U. S. Midland, Texas 79701 LEGAL NOTICE This report was prepared by Dr Robert Trentham as an account of work sponsored by the Research Partnership to Secure Energy for America, RPSEA. Neither RPSEA

436

The Particle Adventure | What holds it together? | Residual EM force  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

EM force EM force Residual EM force Atoms usually have the same numbers of protons and electrons. They are electrically neutral, therefore, because the positive protons cancel out the negative electrons. Since they are neutral, what causes them to stick together to form stable molecules? The answer is a bit strange: we've discovered that the charged parts of one atom can interact with the charged parts of another atom. This allows different atoms to bind together, an effect called the residual electromagnetic force. So the electromagnetic force is what allows atoms to bond and form molecules, allowing the world to stay together and create the matter you interact with all of the time. Amazing, isn't it? All the structures of the world exist simply because protons and electrons have opposite charges!

437

In situ ultrahigh vacuum residual gas analyzer 'calibration'  

SciTech Connect (OSTI)

Knowing the residual gas spectrum is essential for many applications and research in ultrahigh vacuum (UHV). Residual gas analyzers (RGAs) are used for both qualitative and quantitative gas analyses, where the quadrupole mass analyzers are now the most popular. It was found that RGAs supplied by different manufacturers are not necessarily well calibrated for quantitative gas analysis. A procedure applied for in situ RGA 'calibration' against a calibrated UHV total pressure gauge is described in this article. It was found that special attention should be paid to H{sub 2} calibration, as RGAs are usually much more sensitive to H{sub 2} than ionization gauges. The calibration coefficients are quite reproducible in Faraday cup mode, however, using the secondary electron multiplier requires frequent checks of the calibration coefficients. The coefficients obtained for the RGA allow the use of the RGA as an accurate device for gas spectrum analysis.

Malyshev, O. B.; Middleman, K. J. [ASTeC, STFC Daresbury Laboratory, Warrington WA4 4AD (United Kingdom)

2008-11-15T23:59:59.000Z

438

Vacuum pyrolysis of bark residues and primary sludges  

SciTech Connect (OSTI)

Black spruce bark residues and primary sludges derived from the operation of the Daishowa pulp and paper plant in Quebec City, PQ, were processed by vacuum pyrolysis in a laboratory-scale batch reactor. The pyrolysis oil, water, charcoal, and gas were recovered and analyzed. The bark residues yielded 30.6% oil and 34.1% charcoal, and the primary sludges gave 40.1% oil and 30.1% charcoal on a feedstock air-dry basis. The oil phases recovered from the two pyrolysis experiments were fractionated into eight fractions; they were analyzed by gas chromatography/mass spectrometry. Both pyrolysis oil samples had a high content of phenolic compounds. These oils contained various fine chemicals that have possible commercial potential. Aliphatic and aromatic hydrocarbons, as well as long- and short-chain carboxylic acids, are also present in both pyrolysis oils.

Pakdel, H.; Couture, G.; Roy, C. (Univ. Laval, Ste-Foy, Quebec (Canada))

1994-07-01T23:59:59.000Z

439

Combustion of textile residues in a packed bed  

SciTech Connect (OSTI)

Textile is one of the main components in the municipal waste which is to be diverted from landfill for material and energy recovery. As an initial investigation for energy recovery from textile residues, the combustion of cotton fabrics with a minor fraction of polyester was investigated in a packed bed combustor for air flow rates ranging from 117 to 1638 kg/m{sup 2} h (0.027-0.371 m/s). Tests were also carried out in order to evaluate the co-combustion of textile residues with two segregated waste materials: waste wood and cardboard. Textile residues showed different combustion characteristics when compared to typical waste materials at low air flow rates below 819 kg/m{sup 2} h (0.186 m/s). The ignition front propagated fast along the air channels randomly formed between packed textile particles while leaving a large amount of unignited material above. This resulted in irregular behaviour of the temperature profile, ignition rate and the percentage of weight loss in the ignition propagation stage. A slow smouldering burn-out stage followed the ignition propagation stage. At air flow rates of 1200-1600 kg/m{sup 2} h (0.272-0.363 m/s), the bed had a maximum burning rate of about 240 kg/m{sup 2} h consuming most of the combustibles in the ignition propagation stage. More uniform combustion with an increased burning rate was achieved when textile residues were co-burned with cardboard that had a similar bulk density. (author)

Ryu, Changkook; Phan, Anh N.; Sharifi, Vida N.; Swithenbank, Jim [Sheffield University Waste Incineration Centre (SUWIC), Department of Chemical and Process Engineering, The University of Sheffield, Mappin Street, Sheffield S1 3JD (United Kingdom)

2007-08-15T23:59:59.000Z

440

Wave induced residual pore-water pressures in sandbeds  

E-Print Network [OSTI]

for her help in typing and proofreading the text, and especially for her undying moral support during our stay in College Station. ACKNOWLED6NENTS The author is grateful to Drs. John B. Herbich and Wayne A. Dunlap for their advice and guidance... Size Analysis for Glass Beads . . . . . . . . 24 Waterproof Housing for Pressure Transducers 27 10 Experiment 1 Experiment 2 Experiment 3 Experiment 4 Experiment 5 Experiment 6 32 33 34 35 36 37 12 13 Effect of Residual Pore...

DeVries, Jack Walter

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Type Ia Supernova Hubble Residuals and Host-Galaxy Properties  

SciTech Connect (OSTI)

Kim et al. (2013) [K13] introduced a new methodology for determining peak- brightness absolute magnitudes of type Ia supernovae from multi-band light curves. We examine the relation between their parameterization of light curves and Hubble residuals, based on photometry synthesized from the Nearby Supernova Factory spec- trophotometric time series, with global host-galaxy properties. The K13 Hubble residual step with host mass is 0.013 ? 0.031 mag for a supernova subsample with data coverage corresponding to the K13 training; at ? 1?, the step is not significant and lower than previous measurements. Relaxing the data coverage requirement the Hubble residual step with host mass is 0.045 ? 0.026 mag for the larger sample; a calculation using the modes of the distributions, less sensitive to outliers, yields a step of 0.019 mag. The analysis of this article uses K13 inferred luminosities, as distinguished from previous works that use magnitude corrections as a function of SALT2 color and stretch param- eters: Steps at> 2? significance are found in SALT2 Hubble residuals in samples split by the values of their K13 x(1) and x(2) light-curve parameters. x(1) affects the light- curve width and color around peak (similar to the?m15 and stretch parameters), and x(2) affects colors, the near-UV light-curve width, and the light-curve decline 20 to 30 days after peak brightness. The novel light-curve analysis, increased parameter set, and magnitude corrections of K13 may be capturing features of SN Ia diversity arising from progenitor stellar evolution.

Nearby Supernova Factory; Kim, A. G.; Aldering, G.; Antilogus, P.; Aragon, C.; Bailey, S.; Baltay, C.; Bongard, S.; Buton, C.; Canto, A.; Cellier-Holzem, F.; Childress, M.; Chotard, N.; Copin, Y.; Fakhouri, H. K.; Feindt, U.; Fleury, M.; Gangler, E.; Greskovic, P.; Guy, J.; Kowalski, M.; Lombardo, S.; Nordin, J.; Nugent, P.; Pain, R.; Pecontal, E.; Pereira, R.; Perlmutter, S.; Rabinowitz, D.; Rigault, M.; Runge, K.; Saunders, C.; Scalzo, R.; Smadja, G.; Tao, C.; Thomas, R. C.; Weaver, B. A.

2014-01-17T23:59:59.000Z

442

Diesel engine lubrication with poor quality residual fuel  

SciTech Connect (OSTI)

The quality of marine residual fuel is declining. This is being caused by a gradual trend towards production of heavier crudes and increased residuum conversion processes in refineries to meet light product demand while holding down crude runs. Additionally, more stringent inland fuel sulfur regulations have caused the higher sulfur residues to be used for marine residual fuel blending. Engine manufacturers are making major efforts in design so that their engines can burn these fuels at high efficiency with minimum adverse effects. The oil industry is developing improved lubricants to reduce as much as possible the increased wear and deposit formation caused by these poor quality fuels. To guide the development of improved lubricants, knowledge is required about the impact of the main fuel characteristics on lubrication. This paper summarizes work conducted to assess the impact of fuel sulfur, Conradson carbon and asphaltenes on wear and deposit formation in engines representative of full scale crosshead diesel engines and medium speed trunk piston engines. Results obtained with improved lubricants in these engines are reviewed.

Van der Horst, G.W.; Hold, G.E.

1983-01-01T23:59:59.000Z

443

Residual Stress Evaluation within a Crimped Splice Connector Assembly  

SciTech Connect (OSTI)

In power transmission, connectors play an important role in the efficiency and reliability of the system. Due to the increase of power demand and lack of new infrastructure, existing overhead power transmission lines often need to operate at temperatures higher than the original design criteria. However, this had led to the accelerated aging and degradation of splice connectors, which has been manifested by the formation of hot-spots that have been revealed by infrared imaging during inspection of transmission lines operating at elevated temperatures. The implications of connector aging is two-fold: (1) significant increase in resistivity of the splice connector (i.e., less efficient transmission of electricity) and (2) significant reduction in the connector clamping strength, which ultimately results in separation of the power transmission line at the joint. Therefore, the splice connector has become the weakest link in the electric power transmission infrastructure. The compressive residual stresses induced by the crimping process within the splice provide the clamping forces to secure the conductor and therefore, the determination of the state of residual stresses in splice connectors is a necessary requirement to provide an accurate estimate of their service lifetime. This paper presents a protocol of utilizing finite-element analysis and neutron scattering experiments for evaluating the residual stress fields within a crimped single-stage splice connector assembly.

Wang, Jy-An John [ORNL; An, Ke [ORNL; Lara-Curzio, Edgar [ORNL; Hubbard, Camden R [ORNL; King Jr, Thomas J [ORNL; Graziano, Joe [Tennessee Valley Authority (TVA); Chan, John [Electric Power Research Institute (EPRI)

2006-01-01T23:59:59.000Z

444

Washing of Rocky Flats Combustible Residues (Conducted March - May 1995)  

SciTech Connect (OSTI)

The scope of this project is to determine the feasibility of washing plutonium-containing combustible residues using ultrasonic disruption as a method for dislodging particulate. Removal of plutonium particulate and, to a lesser extent, solubilized plutonium from the organic substrate should substantially reduce potential fire, explosion or radioactive release hazards due to radiolytic hydrogen generation or high flammability. Tests were conducted on polypropylene filters which were used as pre-filters in the rich-residue ion-exchange process at the Los Alamos Plutonium Facility. These filters are similar to the Ful-Flo{reg_sign} cartridges used at Rocky Flats that make up a substantial fraction of the combustible residues with the highest hazard rating. Batch experiments were run on crushed filter material in order to determine the amount of Pu removed by stirring, stirring and sonication, and stirring and sonication with the introduction of Pu-chelating water-soluble polymers or surfactants. Significantly more Pu is removed using sonication and sonication with chelators than is removed with mechanical stirring alone.

Mary E. Barr; Ann R. Schake; David A. Romero; Gordon D. Jarvinen

1999-03-01T23:59:59.000Z

445

Crop Residue Removal for Bioenergy Reduces Soil Carbon Pools: How Can We Offset Carbon Losses?  

Science Journals Connector (OSTI)

Crop residue removal for bioenergy can deplete soil organic carbon (SOC) ... been, however, widely discussed. This paper reviews potential practices that can be used to offset the SOC lost with residue removal. Literature

Humberto Blanco-Canqui

2013-03-01T23:59:59.000Z

446

A Systematic Investigation for Reducing Shredder Residue for Complex Automotive Seat Subassemblies  

Science Journals Connector (OSTI)

Automotive shredder residue is a byproduct of the automotive recycling infrastructure and represents 15% of the ... in order to remove a large portion of automotive shredder residue before the shredding process i...

Siobhan Barakat; Jill Urbanic

2011-01-01T23:59:59.000Z

447

Making Photosynthetic Biofuel Renewable: Recovering Phosphorus from Residual Biomass J. M. Gifford and P. Westerhoff  

E-Print Network [OSTI]

Making Photosynthetic Biofuel Renewable: Recovering Phosphorus from Residual Biomass J. M. Gifford to global warming. Biofuel from phototrophic microbes like algae and bacteria provides a viable substitute improves biofuel sustainability by refining phosphorus recycling. Biomass Production Residual Biomass

Hall, Sharon J.

448

Bioenergy Production via Microbial Conversion of Residual Oil to Natural Gas  

Science Journals Connector (OSTI)

...Microbiology May 15, 2008 ARTICLE PHYSIOLOGY AND BIOTECHNOLOGY Bioenergy Production via Microbial Conversion of Residual Oil to Natural...alkanes by anaerobic microorganisms. Nature 401: 266-269. Bioenergy production via microbial conversion of residual oil to natural...

Lisa M. Gieg; Kathleen E. Duncan; Joseph M. Suflita

2008-03-31T23:59:59.000Z

449

Techniques for identifying long-range residue correlations in the fifth binding module of LDLR  

E-Print Network [OSTI]

The study of correlations between residues in distal regions of a protein structure may provide insights into the mechanism of protein folding. Such long-range correlations may exist between distant residues that are ...

Lin, Jennifer W

2006-01-01T23:59:59.000Z

450

E-Print Network 3.0 - air-pollution-control residues leaching...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

leaching Search Powered by Explorit Topic List Advanced Search Sample search results for: air-pollution-control residues leaching Page: << < 1 2 3 4 5 > >> 1 Solid Residues from...

451

Incremental update of approximations in dominance-based rough sets approach under the variation of attribute values  

Science Journals Connector (OSTI)

Abstract Dominance-based Rough Sets Approach (DRSA) has received much attention since it is able to acquire knowledge from information with preference ordered attribute domains and decision classes. In many real-life applications, the information systems may evolve over time dynamically. In a dynamic information system, the obtained knowledge, e.g., approximations in DRSA, need to be updated for decision making and other related tasks. As a useful technique, the incremental update can be applied to process dynamic information with revising the obtained knowledge. In this paper, we propose an incremental approach for maintaining approximations of DRSA when attribute values vary over time. Some numerical examples illustrate that the incremental approach can renew approximations of DRSA without beginning from scratch. Experimental evaluations show that the incremental algorithm can effectively reduce the computational time in comparison with the non-incremental one when the ratio of the attribute values varied is less than a threshold.

Shaoyong Li; Tianrui Li

2015-01-01T23:59:59.000Z

452

Residual Strain Distribution in Bent Composite Boiler Tubes  

SciTech Connect (OSTI)

Kraft recovery boilers are typically constructed of carbon steel boiler tubes clad with a corrosion resistant layer, and these composite tubes are bent and welded together to form air port panels which enable the combustion air to enter the boiler. In this paper, the through-thickness residual strain in the carbon steel layer of non-heat-treated and heat-treated composite bent tubes were measured by neutron diffraction techniques and modeled by finite element modeling. The results can be used to optimize material selection and manufacturing processes to prevent stress corrosion and corrosion fatigue cracking in the boiler tubes.

Hubbard, Camden R [ORNL; Gorti, Sarma B [ORNL; Tang, Fei [ORNL

2006-01-01T23:59:59.000Z

453

Sorption Characteristics of Polycyclic Aromatic Hydrocarbons in Aluminum Smelter Residues  

Science Journals Connector (OSTI)

Carbon-normalized distribution coefficients of native PAHs were 2 orders of magnitude higher than expected based on amorphous organic carbon (AOC)/water partitioning, which is in the same order of magnitude as reported literature values for soots and charcoals. ... Desorption experiments using Tenax showed that fresh smelter residues had a relatively large rapidly desorbing fraction of PAH (35?50%), whereas this fraction was strongly reduced (11?16%) in the lagoon and roof dust material. ... To determine the BC levels, the Gelinas modification (15) of the chemo-thermal oxidation (CTO) method by Gustafsson (16) was applied. ...

Gijs D. Breedveld; Émilien Pelletier; Richard St. Louis; Gerard Cornelissen

2007-02-17T23:59:59.000Z

454

Heavy residue properties in intermediate energy nuclear collisions with gold  

SciTech Connect (OSTI)

We have measured the target fragment production cross sections and angular distributions for the interaction of 32, 44 and 93 MeV/nucleon argon, 35 and 43 MeV/nucleon krypton with gold. The fragment isobaric yield distributions, moving frame angular distributions and velocities have been deduced from these data. This fission cross section decreases with increasing projectile energy and the heavy residue cross section increases. The ratio v{sub {parallel}}/v{sub cn} increases approximately linearly with mass removed from the target. 21 refs., 8 figs.

Aleklett, K.; Sihver, L. (Uppsala Univ., Nykoeping (Sweden). Studsvik Neutron Research Lab.); Loveland, W. (Oregon State Univ., Corvallis, OR (USA)); Liljenzin, J.O. (Chalmers Univ. of Tech., Goeteborg (Sweden)); Seaborg, G.T. (Lawrence Berkeley Lab., CA (USA). Nuclear Science Div.)

1990-10-01T23:59:59.000Z

455

Subsidiary Regge Trajectories with Singular Residues. Nucleon-Nucleon Scattering  

Science Journals Connector (OSTI)

It is pointed out that the existence of secondary Regge trajectories with intercepts ?(0) which differ by integers from that of the leading trajectory at t=0, and residues which are singular at that point, is a very general phenomenon which should occur both in the scattering of particles with spin, and in the scattering of particles of unequal mass. Rules are given for determining if such trajectories exist, and for determining their properties. The case of nucleon-nucleon scattering is discussed as an example.

Loyal Durand; III

1967-01-09T23:59:59.000Z

456

Alternative cooling resource for removing the residual heat of reactor  

SciTech Connect (OSTI)

The Recirculated Cooling Water (RCW) system of a Candu reactor is a closed cooling system which delivers demineralized water to coolers and components in the Service Building, the Reactor Building, and the Turbine Building and the recirculated cooling water is designed to be cooled by the Raw Service Water (RSW). During the period of scheduled outage, the RCW system provides cooling water to the heat exchangers of the Shutdown Cooling System (SDCS) in order to remove the residual heat of the reactor, so the RCW heat exchangers have to operate at all times. This makes it very hard to replace the inlet and outlet valves of the RCW heat exchangers because the replacement work requires the isolation of the RCW. A task force was formed to prepare a plan to substitute the recirculated water with the chilled water system in order to cool the SDCS heat exchangers. A verification test conducted in 2007 proved that alternative cooling was possible for the removal of the residual heat of the reactor and in 2008 the replacement of inlet and outlet valves of the RCW heat exchangers for both Wolsong unit 3 and 4 were successfully completed. (authors)

Park, H. C.; Lee, J. H.; Lee, D. S.; Jung, C. Y.; Choi, K. Y. [Korea Hydro and Nuclear Power Co., Ltd., 260 Naa-ri Yangnam-myeon Gyeongju-si, Gyeonasangbuk-do, 780-815 (Korea, Republic of)

2012-07-01T23:59:59.000Z

457

Estimating Residual Solids Volume In Underground Storage Tanks  

SciTech Connect (OSTI)

The Savannah River Site liquid waste system consists of multiple facilities to safely receive and store legacy radioactive waste, treat, and permanently dispose waste. The large underground storage tanks and associated equipment, known as the 'tank farms', include a complex interconnected transfer system which includes underground transfer pipelines and ancillary equipment to direct the flow of waste. The waste in the tanks is present in three forms: supernatant, sludge, and salt. The supernatant is a multi-component aqueous mixture, while sludge is a gel-like substance which consists of insoluble solids and entrapped supernatant. The waste from these tanks is retrieved and treated as sludge or salt. The high level (radioactive) fraction of the waste is vitrified into a glass waste form, while the low-level waste is immobilized in a cementitious grout waste form called saltstone. Once the waste is retrieved and processed, the tanks are closed via removing the bulk of the waste, chemical cleaning, heel removal, stabilizing remaining residuals with tailored grout formulations and severing/sealing external penetrations. The comprehensive liquid waste disposition system, currently managed by Savannah River Remediation, consists of 1) safe storage and retrieval of the waste as it is prepared for permanent disposition; (2) definition of the waste processing techniques utilized to separate the high-level waste fraction/low-level waste fraction; (3) disposition of LLW in saltstone; (4) disposition of the HLW in glass; and (5) closure state of the facilities, including tanks. This paper focuses on determining the effectiveness of waste removal campaigns through monitoring the volume of residual solids in the waste tanks. Volume estimates of the residual solids are performed by creating a map of the residual solids on the waste tank bottom using video and still digital images. The map is then used to calculate the volume of solids remaining in the waste tank. The ability to accurately determine a volume is a function of the quantity and quality of the waste tank images. Currently, mapping is performed remotely with closed circuit video cameras and still photograph cameras due to the hazardous environment. There are two methods that can be used to create a solids volume map. These methods are: liquid transfer mapping / post transfer mapping and final residual solids mapping. The task is performed during a transfer because the liquid level (which is a known value determined by a level measurement device) is used as a landmark to indicate solids accumulation heights. The post transfer method is primarily utilized after the majority of waste has been removed. This method relies on video and still digital images of the waste tank after the liquid transfer is complete to obtain the relative height of solids across a waste tank in relation to known and usable landmarks within the waste tank (cooling coils, column base plates, etc.). In order to accurately monitor solids over time across various cleaning campaigns, and provide a technical basis to support final waste tank closure, a consistent methodology for volume determination has been developed and implemented at SRS.

Clark, Jason L.; Worthy, S. Jason; Martin, Bruce A.; Tihey, John R.

2014-01-08T23:59:59.000Z

458

Discrepancy between Subcritical and Fast Rupture Roughness: A Cumulant Analysis N. Mallick, P.-P. Cortet, S. Santucci,* S. G. Roux, and L. Vanel  

E-Print Network [OSTI]

Discrepancy between Subcritical and Fast Rupture Roughness: A Cumulant Analysis N. Mallick, P the slow (subcritical) and the fast growth regime. DOI: 10.1103/PhysRevLett.98.255502 PACS numbers: 62, crack growth starts in a subcritical regime where the growth is slow (v 10ÿ5­10ÿ2 m sÿ1) and reaches

Roux, Stephane

459

Immiscible displacements in rough-walled fractures: Competition between roughening by random aperture variations and smoothing by in-plane curvature  

E-Print Network [OSTI]

Immiscible displacements in rough-walled fractures: Competition between roughening by random-walled fractures is controlled by the competition between random aperture variability which tends to roughen parameters: one that controls roughening the coefficient of variation of the aperture field, and another

Detwiler, Russell

460

Roughness-based monitoring of transparency and conductivity in boron-doped ZnO thin films prepared by spray pyrolysis  

SciTech Connect (OSTI)

Graphical abstract: Display Omitted Highlights: ? We report surface roughness dependent transparency and conductivity in ZnO films. ? The surface roughness with respected to boron doping concentrations is studied. ? Boron doped and pristine Zinc oxide thin films have showed ?95% transmittance. ? Increased carrier concentration of 9.21 × 10{sup 21} cm{sup ?3} revealed from Hall measurement. -- Abstract: Sprayed polycrystalline ZnO and boron-doped ZnO thin films composed of spherical grains of 25–32 nm in diameters are used in roughness measurement and further correlated with the transparency and the conductivity characteristics. The surface roughness is increased up to Zn{sub 0.98}B{sub 0.02}O and then declined at higher boron concentrations. The sprayed ZnO films revealed ?95% transmittance in the visible wavelength range, 1.956 × 10{sup ?4} ? cm electrical resistivity, 46 cm{sup 2}/V s Hall mobility and 9.21 × 10{sup 21} cm{sup ?3} charge carrier concentration. The X-ray photoelectron spectroscopy study has confirmed 0.15 eV binding energy change for Zn 2p{sub 3/2} when 2 at% boron content is mixed without altering electro-optical properties substantially. Finally, using soft modeling importance of these textured ZnO over non-textured films for enhancing the solar cells performance is explored.

Gaikwad, Rajendra S. [Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 130-650 (Korea, Republic of) [Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 130-650 (Korea, Republic of); Department of Physics, Yashwantrao Mohite College, Bharati Vidyapeeth Deemed University, Pune 411038, Maharashtra (India); Bhande, Sambhaji S. [Centre for Nanomaterials and Energy Devices, School of Physical Sciences, Swami Ramand Teerth Marathwada University, Nanded (India)] [Centre for Nanomaterials and Energy Devices, School of Physical Sciences, Swami Ramand Teerth Marathwada University, Nanded (India); Mane, Rajaram S., E-mail: rsmane_2000@yahoo.com [Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 130-650 (Korea, Republic of); Inorganic Nanomaterials Laboratory, Department of Chemistry, Hanyang University, Seoul 133-791 (Korea, Republic of); Centre for Nanomaterials and Energy Devices, School of Physical Sciences, Swami Ramand Teerth Marathwada University, Nanded (India); Pawar, Bhagwat N. [Department of Physics, Yashwantrao Mohite College, Bharati Vidyapeeth Deemed University, Pune 411038, Maharashtra (India)] [Department of Physics, Yashwantrao Mohite College, Bharati Vidyapeeth Deemed University, Pune 411038, Maharashtra (India); Gaikwad, Sanjay L. [Centre for Nanomaterials and Energy Devices, School of Physical Sciences, Swami Ramand Teerth Marathwada University, Nanded (India)] [Centre for Nanomaterials and Energy Devices, School of Physical Sciences, Swami Ramand Teerth Marathwada University, Nanded (India); Han, Sung-Hwan [Inorganic Nanomaterials Laboratory, Department of Chemistry, Hanyang University, Seoul 133-791 (Korea, Republic of)] [Inorganic Nanomaterials Laboratory, Department of Chemistry, Hanyang University, Seoul 133-791 (Korea, Republic of); Joo, Oh-Shim, E-mail: jookat@kist.ac.kr [Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 130-650 (Korea, Republic of)] [Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 130-650 (Korea, Republic of)

2012-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Roughly speaking, a set is a collection of objects. The objects are called the members or the elements of the set.  

E-Print Network [OSTI]

2-24-2007 Sets Roughly speaking, a set is a collection of objects. The objects are called the members or the elements of the set. Set theory is the basis for mathematics, and there are a number of axiom systems for set theory; von Neumann-G¨odel-Bernays (NBG) and Zermelo-Fraenkel-Choice (ZFC

Ikenaga, Bruce

462

Mineral Sequestration Utilizing Industrial By-Products, Residues, and Minerals  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

J. Fauth and Yee Soong J. Fauth and Yee Soong U.S. Department of Energy National Energy Technology Laboratory Pittsburgh PA, 15236-0940 Mineral Sequestration Workshop National Energy Technology Laboratory August 8, 2001 Mineral Sequestration Utilizing Industrial By-Products, Residues, and Minerals Mineral Sequestration Workshop, U.S. Department of Energy, NETL, August 8, 2001 Overview * Introduction - Objective - Goals - NETL Facilities * Effect of Solution Chemistry on Carbonation Efficiency - Buffered Solution + NaCl - Buffered Solution + MEA * Effect of Pretreatment on Carbonation Efficiency - Thermal Treatments - Chemical Treatments * Carbonation Reaction with Ultramafic Minerals - Serpentine - Olivine Mineral Sequestration Workshop, U.S. Department of Energy, NETL, August 8, 2001 Overview * Carbonation Reaction with Industrial By-products

463

Residual energy in magnetohydrodynamic turbulence and in the solar wind  

E-Print Network [OSTI]

Recent observations indicate that kinetic and magnetic energies are not in equipartition in the solar wind turbulence. Rather, magnetic fluctuations are more energetic and have somewhat steeper energy spectrum compared to the velocity fluctuations. This leads to the presence of the so-called residual energy E_r=E_v-E_b in the inertial interval of turbulence. This puzzling effect is addressed in the present paper in the framework of weak turbulence theory. Using a simple model of weakly colliding Alfv\\'en waves, we demonstrate that the kinetic-magnetic equipartition indeed gets broken as a result of nonlinear interaction of Alfv\\'en waves. We establish that magnetic energy is indeed generated more efficiently as a result of these interactions, which proposes an explanation for the solar wind observations.

Stanislav Boldyrev; Jean Carlos Perez; Vladimir Zhdankin

2011-08-30T23:59:59.000Z

464

Quantification of residual stress from photonic signatures of fused silica  

SciTech Connect (OSTI)

A commercially available grey-field polariscope (GFP) instrument for photoelastic examination is used to assess impact damage inflicted upon the outer-most pane of Space Shuttle windows made from fused silica. A method and apparatus for calibration of the stress-optic coefficient using four-point bending is discussed. The results are validated on known material (acrylic) and are found to agree with literature values to within 6%. The calibration procedure is then applied to fused-silica specimens and the stress-optic coefficient is determined to be 2.43 ± 0.54 × 10{sup ?12} Pa{sup ?1}. Fused silica specimens containing impacts artificially made at NASA’s Hypervelocity Impact Technology Facility (HIT-F), to simulate damage typical during space flight, are examined. The damage sites are cored from fused silica window carcasses and examined with the GFP. The calibrated GFP measurements of residual stress patterns surrounding the damage sites are presented.

Cramer, K. Elliott; Yost, William T. [NASA Langley Research Center, Hampton, VA 23681 (United States); Hayward, Maurice [College of William and Mary, Williamsburg, VA 23185 (United States)

2014-02-18T23:59:59.000Z

465

Evaluation of the residue from microset on various metal surfaces.  

SciTech Connect (OSTI)

Fast-curing impression materials are sometimes used to cast negative-mold replications of physical defects on material surfaces. The negative-mold impressions can then be used for further measurements to record the nature of the defect. These impression materials have been designed to cure quickly, and with very low adhesion, so that they can be easily removed from the surface leaving little residual contamination. Unfortunately, some contaminant is retained by the substrate material. This investigation seeks to identify the composition and quantity of the remaining material upon removal of Microset Synthetic Rubber Replicating Compound from several material surfaces. Coe-Flex was used as a relative comparison to Microset. On fifteen different substrate materials the Microset leaves no visible trace of contaminant, however, X-ray photoelectron spectroscopy shows evidence of a thin silicone-based contaminant film of approximately 2 nm thickness.

Brumbach, Michael Todd

2011-04-01T23:59:59.000Z

466

Residual Stress Determination for A Ferritic Steel Weld Plate  

SciTech Connect (OSTI)

The primary objective of this experiment is to demonstrate the capability of neutron diffraction technique to reproducibly map residual strains in a ferritic steel weld. The objective includes the identification of corrections for variations in metal composition due to the welding process which produces changes in lattice parameter that are not due to mechanical effects. The second objective is to develop and demonstrate a best practice for neutron diffraction strain mapping of steel welds. The appropriate coordinate system for the measurement of a weld, which is strongly distorted from planar geometry, has to be defined. The coordinate system is important in determining the procedures for mounting and positioning of the weld so that mapping details, especially in regions of high gradients, can be conveniently inter-compared between laboratories.

Wang, D.-Q.; Hubbard, C.R.; Spooner, S.

1999-10-01T23:59:59.000Z

467

Residue temperatures in intermediate energy nucleus-nucleus collisions  

SciTech Connect (OSTI)

With an improved Boltzmann-Uehling-Uhlenbeck (BUU) model, we have investigated the reaction dynamics leading to the thermal freeezout for [sup 40]Ar+[sup 124]Sn collisions. Several criteria are assessed for defining the proper thermal freezout time which separates preequilibrium processes from equilbrium processes. One of these criteria, the time dependence of the thermal excitation energy, provides consistent results for defining the thermal freezeout. The other two criteria, the emission rate of nucleons and the quadrupole moment of the momentum distributions, do not consistently provide accurate freezeout times due to the existence of long time scale collective vibrations. The predicted values for the excitation energies and temperatures, obtained assuming Fermi gas level densities, are quite sensitive to the equation of state and the impact parameter. Surprisingly, both the thermal excitation energies and the residue temperatures, in the limit of a large ensemble of parallel collisions, show little sensitivity to the in-medium nucleon-nucleon cross section.

Xu, H.M.; Lynch, W.G.; Danielewicz, P. (National Superconducting Cyclotron Laboratory and Department of Physics, Michigan State University, East Lansing, Michigan 48824 (United States) Cyclotron Institute, Texas A M University, College Station, Texas 77843 (United States))

1994-09-01T23:59:59.000Z

468

Region-based quantitative and hierarchical attribute reduction in the two-category decision theoretic rough set model  

Science Journals Connector (OSTI)

Abstract Quantitative attribute reduction exhibits applicability but complexity when compared to qualitative reduction. According to the two-category decision theoretic rough set model, this paper mainly investigates quantitative reducts and their hierarchies (with qualitative reducts) from a regional perspective. (1) An improved type of classification regions is proposed, and its preservation reduct (CRP-Reduct) is studied. (2) Reduction targets and preservation properties of set regions are analyzed, and the set-region preservation reduct (SRP-Reduct) is studied. (3) Separability of set regions and rule consistency is verified, and the quantitative and qualitative double-preservation reduct (DP-Reduct) is established. (4) Hierarchies of CRP-Reduct, SRP-Reduct, and DP-Reduct are explored with two qualitative reducts: the Pawlak-Reduct and knowledge-preservation reduct (KP-Reduct). (5) Finally, verification experiments are provided. CRP-Reduct, SRP-Reduct, and DP-Reduct expand layer by layer Pawlak-Reduct and exhibit quantitative applicability, and the experimental results indicate their effectiveness and hierarchies regarding Pawlak-Reduct and KP-Reduct.

Xianyong Zhang; Duoqian Miao

2014-01-01T23:59:59.000Z

469

E-Print Network 3.0 - agricultural residues Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Use in the United States Summary: , livestock commodities, agricultural residues, and bioenergy crops. Drawing on ORNL and APAC county... , developed and maintained at the...

470

E-Print Network 3.0 - automobile shredder residue Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Powered by Explorit Topic List Advanced Search Sample search results for: automobile shredder residue Page: << < 1 2 3 4 5 > >> 1 NASHVILLE INCINERATOR PERFORMANCE TESTS...

471

Recycling waste polymers from automotive shredder residue (ASR); application in iron making.  

E-Print Network [OSTI]

??An investigation was performed on characterisation of automotive shredder residue which resulted in application of its polymeric fraction as a substitute for coke, as reducing… (more)

Fahandej Sadi, Seyed Habib

2013-01-01T23:59:59.000Z

472

Methods of analysis modified size exchange chromatography method for analysis of heavy oil residues  

Science Journals Connector (OSTI)

A modified size exchange chromatography method is used to obtain molecular weight distributions, average molecular weight, and other characteristics of heavy oil residues: coal asphalt, petroleum asphalt, vacu...

Changming Zhang; Adnan Alhajji…

2012-09-01T23:59:59.000Z

473

An Experimental Investigation into Additive Manufacturing-Induced Residual Stresses in 316L Stainless Steel  

Science Journals Connector (OSTI)

Additive manufacturing (AM) technology provides unique opportunities for...i.e., neutron diffraction). Good agreement between the two measurement techniques is observed. Furthermore, a reduction in residual stres...

Amanda S. Wu; Donald W. Brown; Mukul Kumar…

2014-12-01T23:59:59.000Z

474

A SAFEGUARDED DUAL WEIGHTED RESIDUAL METHOD RICARDO H. NOCHETTO, ANDREAS VEESER, AND MARCO VERANI  

E-Print Network [OSTI]

A SAFEGUARDED DUAL WEIGHTED RESIDUAL METHOD RICARDO H. NOCHETTO, ANDREAS VEESER, AND MARCO VERANI safeguarded by additional asymptotically higher order a posteriori terms. In particular, the enhanced

Nochetto, Ricardo H.

475

E-Print Network 3.0 - acs residual ischemic Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Sample search results for: acs residual ischemic Page: << < 1 2 3 4 5 > >> 1 Brain Research 961 (2003) 2231 www.elsevier.comlocatebrainres Summary: further...

476

E-Print Network 3.0 - acid residues required Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering, Columbia University Collection: Engineering ; Biology and Medicine 13 Protein folding with stochastic L-systems Gemma Danks1 Summary: 70 amino acid residues to 1000s...

477

E-Print Network 3.0 - acid residues determine Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering, Columbia University Collection: Engineering ; Biology and Medicine 14 Protein folding with stochastic L-systems Gemma Danks1 Summary: 70 amino acid residues to 1000s...

478

Residual Stress Evaluation of Materials Manufactured by High-Energy Process  

Science Journals Connector (OSTI)

This paper presents several applications of the step by step hole drillling method for measuring residual stress distribution introduced in different components manufactured by the high energy process.

J. F. Flavenot; J. Lu

1990-01-01T23:59:59.000Z

479

The preparation of a cabbage candidate reference material to be certified for residues of agrochemicals  

Science Journals Connector (OSTI)

A new cabbage candidate reference material has been prepared for the determination of residues of agrochemicals. The cabbage was grown with deliberate application...

Rolf Zeisler; Vladimir Strachnov…

480

E-Print Network 3.0 - africa quantifying residual Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Powered by Explorit Topic List Advanced Search Sample search results for: africa quantifying residual Page: << < 1 2 3 4 5 > >> 1 Satellite observations of the...

Note: This page contains sample records for the topic "residues rough rotten" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

"Table A10. Total Consumption of LPG, Distillate Fuel Oil, and Residual Fuel"  

U.S. Energy Information Administration (EIA) Indexed Site

0. Total Consumption of LPG, Distillate Fuel Oil, and Residual Fuel" 0. Total Consumption of LPG, Distillate Fuel Oil, and Residual Fuel" " Oil for Selected Purposes by Census Region and Economic Characteristics of the" " Establishment, 1991" " (Estimates in Barrels per Day)" ,,,," Inputs for Heat",,," Primary Consumption" " "," Primary Consumption for all Purposes",,," Power, and Generation of Electricity",,," for Nonfuel Purposes",,,"RSE" ," ------------------------------------",,," ------------------------------------",,," -------------------------------",,,"Row" "Economic Characteristics(a)","LPG","Distillate(b)","Residual","LPG","Distillate(b)","Residual","LPG","Distillate(b)","Residual","Factors"

482

MCELROY REPORT; ROUGH DRAFT  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Combining a New 3-D Seismic S-Wave Propagation Analysis Combining a New 3-D Seismic S-Wave Propagation Analysis for Remote Fracture Detection with a Robust Subsurface Microfracture-Based Verification Technique FINAL REPORT June 6, 2000-December 31, 2003 Principal Authors: Bob Hardage, M. M. Backus, M. V. DeAngelo, R. J. Graebner, S. E. Laubach, and Paul Murray Report Issue Date: February 2004 DOE Contract No. DE-AC26-00NT40690 Submitting Organization: Bureau of Economic Geology The University of Texas at Austin University Station, Box X Austin, TX 78713-8924 Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal

483

Gas Generation Test Support for Transportation and Storage of Plutonium Residue Materials - Part 1: Rocky Flats Sand, Slag, and Crucible Residues  

SciTech Connect (OSTI)

The purpose of this report is to present experimental results that can be used to establish one segment of the safety basis for transportation and storage of plutonium residue materials.

Livingston, R.R.

1999-08-24T23:59:59.000Z

484

POST-OPERATIONAL TREATMENT OF RESIDUAL NA COOLLANT IN EBR-2 USING CARBONATION  

SciTech Connect (OSTI)

At the end of 2002, the Experimental Breeder Reactor Two (EBR-II) facility became a U.S. Resource Conservation and Recovery Act (RCRA) permitted site, and the RCRA permit1 compelled further treatment of the residual sodium in order to convert it into a less reactive chemical form and remove the by-products from the facility, so that a state of RCRA 'closure' for the facility may be achieved (42 U.S.C. 6901-6992k, 2002). In response to this regulatory driver, and in recognition of project budgetary and safety constraints, it was decided to treat the residual sodium in the EBR-II primary and secondary sodium systems using a process known as 'carbonation.' In early EBR-II post-operation documentation, this process is also called 'passivation.' In the carbonation process (Sherman and Henslee, 2005), the system containing residual sodium is flushed with humidified carbon dioxide (CO{sub 2}). The water vapor in the flush gas reacts with residual sodium to form sodium hydroxide (NaOH), and the CO{sub 2} in the flush gas reacts with the newly formed NaOH to make sodium bicarbonate (NaHCO{sub 3}). Hydrogen gas (H{sub 2}) is produced as a by-product. The chemical reactions occur at the exposed surface of the residual sodium. The NaHCO{sub 3} layer that forms is porous, and humidified carbon dioxide can penetrate the NaHCO{sub 3} layer to continue reacting residual sodium underneath. The rate of reaction is controlled by the thickness of the NaHCO{sub 3} surface layer, the moisture input rate, and the residual sodium exposed surface area. At the end of carbonation, approximately 780 liters of residual sodium in the EBR-II primary tank ({approx}70% of original inventory), and just under 190 liters of residual sodium in the EBR-II secondary sodium system ({approx}50% of original inventory), were converted into NaHCO{sub 3}. No bare surfaces of residual sodium remained after treatment, and all remaining residual sodium deposits are covered by a layer of NaHCO{sub 3}. From a safety standpoint, the inventory of residual sodium in these systems was greatly reduced by using the carbonation process. From a regulatory standpoint, the process was not able to achieve deactivation of all residual sodium, and other more aggressive measures will be needed if the remaining residual sodium must also be deactivated to meet the requirements of the existing environmental permit. This chapter provides a project history and technical summary of the carbonation of EBR-II residual sodium. Options for future treatment are also discussed.

Sherman, S.; Knight, C.

2011-03-08T23:59:59.000Z

485

Continued development of the residue baler. Final report  

SciTech Connect (OSTI)

The baling concept discussed in this report has evolved from work started in 1975. The objective of this activity was to develop a method for transporting entire above ground portions of both pine and hardwood stems to a mill or centralized processing point in a form that was compatible with truck, trailer, rail and barge hauls and with sufficient bulk density to optimize load sizes on the various carriers while expending a minimum amount of capital and energy in the woods operations. The year's work resulted in the baling concept and a prototype baler being tested under a wide variety of field conditions material types and operating scenarios. The work in the Pacific Northwest demonstrated that baling offers a means of preparing forest residues for transport which results in a near maximum solid wood content in a load. The reworking of the hydraulic circuits significantly reduced the cycle time on the prototype without increasing the power requirements. The installation of the wire feed assembly moved the development of an automatic banding and tying system one step closer. Both sets of field trials also pointed out that a true field demonstration of the commercial ability of the baline concept will have to await the construction of a second generation prototype producing a larger bale and designed to accept several different infeed types. 7 figures, 3 tables.

Stuart, W.B.

1984-01-01T23:59:59.000Z

486

Catalytic gasification of automotive shredder residues with hydrogen generation  

Science Journals Connector (OSTI)

Hydrogen is a clean and new energy carrier to generate power through the Proton exchange membrane fuel cell (PEMFC) system. Hydrogen can be effectively turned out through the catalytic gasification of organic material such as automotive shredder residues (ASR). The main objective of this manuscript is to present an analysis of the catalytic gasification of ASR for the generation of high-purity hydrogen in a lab-scale fixed-bed downdraft gasifier using 15 wt.% NiO/Al2O3 catalysts at 760–900 K. In the catalytic gasification process, reduction of Ni(II) catalyst into Ni(0) has been confirmed through XANES spectra and consequently EXAFS data shows that the central Ni atoms have Ni–O and Ni–Ni bonds with bond distances of 2.03 ± 0.05 and 2.46 ± 0.05 Å, respectively. ASR is partially oxidized and ultimately converts into hydrogen rich syngas (CO and H2) and increases of the reaction temperature are favored the generation of hydrogen with decomposition of the CO. As well, approximately 220 kg h?1 of ASR would be catalytically gasified at 760–900 K and 46.2 atm with the reactor volume 0.27 m3 to obtain approximately 3.42 × 105 kcal h?1 of thermal energy during over 87% syngas generation with the generation of 100 kW electric powers.

Kuen-Song Lin; Sujan Chowdhury; Ze-Ping Wang

2010-01-01T23:59:59.000Z

487

Analysis of lead content in automotive shredder residue (ASR)  

Science Journals Connector (OSTI)

Automotive shredder residue (ASR) is a very heterogeneous waste, which could have a very high metal content on finest fractions ?  < 6 mm produced by the shredding of end of live vehicles. The approval of Directive 2000/53/EC and its transposition to the European Union member states requires an analytical technique for in-situ checking of the content of some metals in ASR wastes. The objective of this study is the evaluation of total Pb content in the different fractions using a rapid measurement method to easily accomplish the current legislation. An experimental Energy Dispersive X-ray Fluorescence (EDXRF) spectrometer with tri-axial geometry was used to analyse the ASR in order to test the feasibility of this analytical technique. Likewise, a correction of the intensities by the incoherent scattering (Compton) radiation was made to compensate the matrix effects. The results show that values in the smaller fractions are bigger (11,600 mg kg?1 in the fraction <125 ?m) than in the coarser fractions (4600 mg kg?1 in the fraction between 2 and 6 mm) and that such type of instrumentation enables a fast measurement with a limit of detection of 1.1 mg kg?1 for 1000 s measurement).

Oscar Gonzalez-Fernandez; Sofia Pessanha; Ignacio Queralt; Maria Luisa Carvalho

2009-01-01T23:59:59.000Z

488

Valorization of automotive shredder residue in building materials  

Science Journals Connector (OSTI)

Every year in EU nations, it is estimated that 3 million tonnes of automotive shredder residue (ASR) are generated. Half of the ASR is composed of rubber, textiles and plastics, which can be either transformed into alternative fuel or recycled. The second half, which is landfilled, is incombustible and has not yet been valorized. This waste contains 30% organic matter, as well as inorganic compounds such as quartz, calcite, magnetite, hematite, and anhydrite. It is also very rich in zinc (1–3.5%) and lead (0.7–3.3%). These elements are powerful retarders of ordinary Portland cement. For this reason, two ways of processing of this waste have been investigated: (1) transformation into aggregates after a thermal treatment followed by a chemical treatment or (2) directly into concrete with the use of calcium sulfoaluminate cement. This second way is especially very interesting for engineers and scientists. As established by leaching tests, zinc and lead are integrated and fixed in the structure of ettringite, the main hydration product of calcium sulfoaluminate cement. Therefore, it is possible to produce concrete for some applications including road construction from this currently landfilled “waste” (i.e., the ASR is shown to be useful recyclable material that can be converted into an environmentally friendly “green” concrete).

J. Péra; J. Ambroise; M. Chabannet

2004-01-01T23:59:59.000Z

489

Production of aggregate from non-metallic automotive shredder residues  

Science Journals Connector (OSTI)

In this paper, the results of an experimentation on the production of granules suitable to be used as aggregates in cementitious or asphalt mixes are presented and discussed. The granules were obtained by granulating the non-metallic fraction of automotive shredder residues. In a preliminary separation step the fluff fraction containing mainly inert and non-metallic materials was sieved and analyzed for the metal content. In the following granulation step, the sieved fraction was mixed with binding materials, fly ash and a densifier agent, to produce granules of 5–30 mm of diameter and up to 1400 kg/m3 of specific weight. The granulation was carried out at room temperature in a rotating tank. Concrete samples prepared using as aggregates the produced granules showed a specific weight up to 1800 kg/m3 and a compressive strength up to about 55% of reference samples prepared using a calcareous aggregate, depending on the fluff content of the mixes, and on the nature of the binder and of the other components used.

Vito Alunno Rossetti; Luca Di Palma; Franco Medici

2006-01-01T23:59:59.000Z

490

Recovery of flexible polyurethane foam from shredder residue.  

SciTech Connect (OSTI)

Argonne National Laboratory has developed a patented, continuous process for the recovery of flexible polyurethane foam (PUF) from auto shredder residue (ASR). To test the process, Argonne researchers conceived of, designed, and built a continuous foam washing and drying system that was pilot-tested at a shredder facility for six months. Economic analysis of the process, using manufacturers' quotes and operating data from Argonne's pilot plant, indicates a payback of less than two years for a plant producing about 1,000 ton/yr of foam. Samples of clean foam were shipped to three major foam reprocessors; all three indicated that the quality of the PUF recovered by the Argonne process met their requirements. Tests of the recovered foam by an independent testing laboratory showed that the recycled foam met the specifications for several automotive applications, including carpet padding, headliner, and sound-suppression support materials. Recovery of foam reduces the mass and the volume of material going to the landfill by about 5% and 30%, respectively. Annually, recovery will save about 1.2 x 10{sup 12} Btu of energy, cut the amount of solid waste being landfilled by about 150,000 tons, and eliminate the emission of about 250 tons of volatile organic compounds (VOCs) into the air.

Daniels, E. J.; Jody, b. J.

1999-06-29T23:59:59.000Z

491

Experimental program to assess the effect of residual stresses on fracture behavior  

SciTech Connect (OSTI)

A series of ``model material`` tests were previously undertaken on aluminium alloy tensile loaded plate specimens containing a central through-thickness crack to investigate the effect of in-plane self-balancing residual stresses on ductile tearing behavior in the context of the R6 methodology. Residual stresses were generated by an electron-beam welding method and this resulted in stress levels of the order of 1/3 yield stress in the test specimens. Provisional results of these tests were presented at the 1993 ASME PVP conference. The value of 1/3 yield is commonly considered as the level of residual stress for fracture assessments of structural components which have been stress relieved. For non stress relieved components, higher values of residual stress need to be considered. A new design of test specimen has therefore been developed. Further ductile tearing experiments have been undertaken on this new design of specimen. The results obtained from these, and the previous tests, have quantitatively demonstrated the influence of residual stress on fracture behavior in terms of both the level of residual stress and the region under consideration on the R6 failure assessment diagram. The general conservatism of the current R6 method for dealing with residual stresses has been confirmed for the type of geometry, loading and residual stress field under consideration.

Sharples, J.K.; Sanderson, D.J.; Bowdler, B.R.; Wightman, A.P. [AEA Technology, Risley (United Kingdom). Technical Services Division; Ainsworth, R.A. [Nuclear Electric plc, Berkeley (United Kingdom)

1995-11-01T23:59:59.000Z

492

Residual stress and self-assembly during deposition and etching of MEMS  

E-Print Network [OSTI]

with no residual stresses. Residual stresses are investigated as a means of self-assembling MEMS and NEMS during material deposition and etching. The assembly of two components is considered: one component is subjected to deposition or etching and is modeled...

Mani, Sathyanarayanan

2012-06-07T23:59:59.000Z

493

Residual Magnetic Flux Leakage: A Possible Tool for Studying Pipeline Defects  

E-Print Network [OSTI]

Residual Magnetic Flux Leakage: A Possible Tool for Studying Pipeline Defects Vijay Babbar1 weaker flux signals. KEY WORDS: Magnetic flux leakage; residual magnetization; pipeline defects; pipeline pipelines, which may develop defects such as corrosion pits as they age in service.(1) Under the ef- fect

Clapham, Lynann

494

U.S. Department of Energy Guidelines for Residual Radioactive Material at  

Broader source: Energy.gov (indexed) [DOE]

U.S. Department of Energy Guidelines for Residual Radioactive U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites (Revision 2, March 1987) U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites (Revision 2, March 1987) More Documents & Publications

495

Vast Energy Resource in Residual Oil Zones, FE Study Says | Department of  

Broader source: Energy.gov (indexed) [DOE]

Vast Energy Resource in Residual Oil Zones, FE Study Says Vast Energy Resource in Residual Oil Zones, FE Study Says Vast Energy Resource in Residual Oil Zones, FE Study Says July 20, 2012 - 1:00pm Addthis Washington, DC - Billions of barrels of oil that could increase domestic supply, help reduce imports, and increase U.S. energy security may be potentially recoverable from residual oil zones, according to initial findings from a study supported by the U.S. Department of Energy's Office of Fossil Energy (FE). The recently completed study, conducted by researchers at the University of Texas-Permian Basin (UTPB), is one of several FE-supported research projects providing insight that will help tap this valuable-but-overlooked resource. Residual oil zones, called ROZs, are areas of immobile oil found below the oil-water contact of a reservoir. ROZs are similar to reservoirs in the

496

U.S. Department of Energy Guidelines for Residual Radioactive Material at  

Broader source: Energy.gov (indexed) [DOE]

U.S. Department of Energy Guidelines for Residual Radioactive U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites (Revision 2, March 1987) U.S. Department of Energy Guidelines for Residual Radioactive Material at Formerly Utilized Sites Remedial Action Program and Remote Surplus Facilities Management Program Sites (Revision 2, March 1987) More Documents & Publications

497

Model for Gasification of Residual Fuels from Petroleum Refineries Using the Equation Oriented (EO) Approach  

Science Journals Connector (OSTI)

An attractive way to use residual fuels from petroleum refineries (vacuum residue and petcoke) is their gasification to produce syngas, which contains mainly H2, CO and small quantities of CH4, CO2, as well as nitrogen and sulfur compounds. ... Vacuum residue and petroleum coke (petcoke) are, respectively, heavy liquid and solid byproducts from crude oil refining, they are often used as fuel in boilers for power production, natural gas has been more commonly used in the past few years in power generation; reducing the market for both vacuum residue and petcoke. ... Regarding petroleum refinery residuals Uson et al.(1) developed a model for cogasification of coal, petcoke and biomass, based on reaction kinetics. ...

Jorge E. Marin-Sanchez; Miguel A. Rodriguez-Toral

2010-07-29T23:59:59.000Z

498

Experimental determination of residual stress by neutron diffraction in a boiling water reactor core shroud  

SciTech Connect (OSTI)

Residual strains in a 51 mm (2-inch) thick 304L stainless steel plate have been measured by neutron diffraction and interpreted in terms of residual stress. The plate, measuring (300 mm) in area, was removed from a 6m (20-ft.) diameter unirradiated boiling water reactor core shroud, and included a multiple-pass horizontal weld which joined two of the cylindrical shells which comprise the core shroud. Residual stress mapping was undertaken in the heat affected zone, concentrating on the outside half of the plate thickness. Variations in residual stresses with location appeared consistent with trends expected from finite element calculations, considering that a large fraction of the residual hoop stress was released upon removal of the plate from the core shroud cylinder.

Payzant, A.; Spooner, S.; Zhu, Xiaojing; Hubbard, C.R. [and others

1996-06-01T23:59:59.000Z

499

EA-1120: Solid Residues Treatment, Repackaging and Storage at the Rocky  

Broader source: Energy.gov (indexed) [DOE]

0: Solid Residues Treatment, Repackaging and Storage at the 0: Solid Residues Treatment, Repackaging and Storage at the Rocky Flats Environmental Technology Site, Golden, Colorado EA-1120: Solid Residues Treatment, Repackaging and Storage at the Rocky Flats Environmental Technology Site, Golden, Colorado SUMMARY This EA evaluates the environmental impacts of the proposal to stabilize, if necessary, and/or repackage the residues for safe interim storage at the Site while awaiting the completion and opening of a suitable repository to which they would be shipped for disposal from the U.S. Department of Energy Rocky Flats Environmental Technology Site in Golden, Colorado. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD April 1, 1996 EA-1120: Finding of No Significant Impact Solid Residues Treatment, Repackaging and Storage at the Rocky Flats

500

Applied study of method to presume decision class by variable precision rough sets model: a case study of how to decide the design concept of a digital camera  

Science Journals Connector (OSTI)

It has been shown from case studies that the method of presuming the decision class is important for extracting the features of a product design. The method we used is the variable precision rough set model proposed by Ziarko, which can deal with the contradiction between data. Applying the idea of a contradiction between data to the contradiction of the evaluations between many subjects, we propose a new approach of presuming the decision class by the variable precision rough set model. In addition, we propose a technique, called the decision class synthesis method, to clarify the design concept of a product. We verified the validity of this proposed technique through the case study of a digital camera.

Akira Sekiguchi; Katsuo Inoue; Tomoko Kashima

2012-01-01T23:59:59.000Z