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1

Functional schematic diagrams  

Microsoft Academic Search

A carefully planned schematic diagram will simplify the study and servicing of electronic equipment. Whereas a conventional schematic merely shows the electrical components and how they are connected, a functional schematic will place these parts on the drawing in such a way as to delineate the circuits they build. This circuit concept versus component concept is the main thesis of

S. H. Larick

1946-01-01

2

Automated generation of analog schematic diagrams  

Microsoft Academic Search

An approach to the automated generation of analog schematic diagrams is presented. The algorithms expressly address the esthetic requirements for analog schematics. There are four major algorithms: (1) functional clustering; (2) block placement; (3) wiring between blocks; and (4) block expansion. Experiments show that schematics can be automatically generated with favorable run times for large networks. Typical SPICE networks of

L. D. Green; J. Andersen

1990-01-01

3

Schematic transformation diagrams for steel  

Microsoft Academic Search

This paper examines the diffusional transformations of austenite and concludes that separate C-curves are required for pearlite, upper bainite, lower bainite and isothermal martensite. A schematic isothermal transformation diagram incorporating the four curves is presented for a plain carbon eutectoid steel and used to develop a schematic continuous cooling transformation diagram. These diagrams are shown to be more compatible with

Noel F. Kennon

1978-01-01

4

Schematic transformation diagrams for steel  

Microsoft Academic Search

This paper examines the diffusional transformations of austenite and concludes that separateC-curves are required for pearlite, upper bainite, lower bainite and isothermal martensite. A schematic isothermal transformation\\u000a diagram incorporating the four curves is presented for a plain carbon eutectoid steel and used to develop a schematic continuous\\u000a cooling transformation diagram. These diagrams are shown to be more compatible with the

Noel F. Kennon

1978-01-01

5

Automatic Generation of Digital System Schematic Diagrams  

Microsoft Academic Search

A systematic approach to the automatic generation of schematic diagrams for digital systems¿diagrams described as networks of modules¿provides useful CAD applications. This approach transforms guidelines. traditionally followed in manual drawings of schematic diagrams, into quantitative objectives. In view of the complex relationship between these objectives, the schematic design process is broken into a lengthy sequence of steps. We will attempt

Anshul Kumar; Anjali Arya; V. V. Swaminathan; Amit Misra

1986-01-01

6

Automatic Generation of Digital System Schematic Diagrams  

Microsoft Academic Search

This paper presents a rigorours approach to automatic generation of schematic diagrams for digital systems described as networks of modules. This is very useful in comprehensive CAD environment. The approach is based on identification of some guidelines which are traditionally followed in mannual drawing of schematic diagrams. Theses guidelines are transformed into quantitative objectives. In view of the complex interrelationship

A. Arya; V. V. Swaminathan; A. Misra; A. Kumar

1985-01-01

7

Automatic generation of digital system schematic diagrams  

Microsoft Academic Search

This paper presents a rigorous approach to automatic generation of schematic diagrams for digital systems described as networks of modules. This is very useful in comprehensive CAD environment. The approach is based on identification of some guidelines which are traditionally followed in manual drawing of schematic diagrams. Theses guidelines are transformed into quantitative objectives. In view of the complex interrelationship

Anjali Arya; Anshul Kumar; V. V. Swaminathan; Amit Misra

1985-01-01

8

White is green: new schematic diagrams  

Microsoft Academic Search

Two new schematic diagrams are presented here that derive from the study of the value relationships of the primary colors of RGB computer and video color. The first diagram is a 'Truth Table' that presents true-false, on-off states of the three colors of RGB so that the colors are presented in the order of their brightness values. The second diagram

Hal Glicksman

2002-01-01

9

Schematic Diagrams, XML and Accessibility  

Microsoft Academic Search

This paper describes work in progress at Oxford Brookes University. The aim of the project is to define a higher-level diagram description language for the World Wide Web, which captures the structure and the semantics of a diagram and enables the generation of accessible presentations in different modalities such as speech, text, graphic, etc. This project, called Graphical Structure Semantic

Zaineb Ben Fredj; David A. Duce

2003-01-01

10

View southwest of carousel displaying schematic diagrams of electrical system; ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

View southwest of carousel displaying schematic diagrams of electrical system; operators console switchboard #1 is at lower right of photograph - Thirtieth Street Station, Power Director Center, Thirtieth & Market Streets in Amtrak Railroad Station, Philadelphia, Philadelphia County, PA

11

On the history of meridional overturning circulation schematic diagrams  

Microsoft Academic Search

Recent global warming caused by humans and the prediction of a reduced Atlantic Ocean meridional overturning circulation in the future has increased interest in the role of the overturning circulation in climate change. A schematic diagram of the overturning circulation called the “Great Ocean Conveyor Belt,” published by Wallace Broecker in 1987, has become a popular image that emphasizes the

Philip L. Richardson

2008-01-01

12

The Generation of Schematic Diagrams from Geographic Representations of Networks  

Microsoft Academic Search

Often, the geographic view of a network hides important connectivity information found in the network. In these cases a schematic diagram of the network data provides a representation in which connectivity relationships are highlighted. In this paper we explore issues relating to the development of information systems that not only support sche- matic representations of network data, but also allow

Paul Yates; Mark Humphreys

1998-01-01

13

A new system for the analysis of schematic diagrams  

Microsoft Academic Search

The objective of the work discussed consists of extracting all components (text, symbols, and connecting lines), constituting the schematic diagram, and recognizing them. For that, the author proposes a system which consists, in a first step, of building hypotheses and, in a second one, of validating these hypotheses by symbol recognition. The author explains the hypothesis building, which performs two

Anja Habacha Hamada; Batiment LORIA

1993-01-01

14

A Procedure for the Format of Schematic Diagrams for Design, Construction, and Maintenance  

Microsoft Academic Search

Electrical schematic diagrams serve many functions in industry. A continuous process manufacturing plant has unique requirements not always satisfied by existing formats. The varied applications of schematic diagrams are discussed from the stand-point of an industrial user. References to current industry standards are cited and several additional features are explained. A detailed procedure for the format of a schematic is

Tom B. Smith

1971-01-01

15

Telesynergy V3 Wiring Diagram  

Cancer.gov

Extron 8 port Video/Audio Switch WAVE Camera Telesynergy v3 Wiring Diagram ISDN T1/PRI Module CTRLR 0 Legend: S-Video Audio VGA DVI USB RS-232 Serial Microphone Ethernet Planar C5i AMD Exam Cam Canon Document Camera Olympus BX51 Sony DVD Recorder JVC

16

Attributed Programmed Graph Grammars and Their Application to Schematic Diagram Interpretation  

Microsoft Academic Search

Attributed programmed graph grammars are introduced in this paper and their application to the interpretation of schematic diagrams is proposed. In contrast with most of the approaches to syntactic pattern recognition, where the grammar controls a parser, the grammar in our system is used as a generative tool. Two classes of diagrams are studied, namely circuit diagrams and flowcharts. The

Horst Bunke

1982-01-01

17

Attributed programmed graph grammars and their application to schematic diagram interpretation.  

PubMed

Attributed programmed graph grammars are introduced in this paper and their application to the interpretation of schematic diagrams is proposed. In contrast with most of the approaches to syntactic pattern recognition, where the grammar controls a parser, the grammar in our system is used as a generative tool. Two classes of diagrams are studied, namely circuit diagrams and flowcharts. The task is in either case to extract a description from an input diagram. PMID:22499631

Bunke, H

1982-06-01

18

AUXILIARY TRACK SCHEMATIC DIAGRAM FOR PIEDMONT, WV (3.2 MILES WEST), ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

AUXILIARY TRACK SCHEMATIC DIAGRAM FOR PIEDMONT, WV (3.2 MILES WEST), MOUNTED AT WEST END OF OPERATOR?S DESK. ROTARY ELECTRICAL SWITCHES CONTROL TURNOUTS AND SIGNALS AT PIEDMONT. - Baltimore & Ohio Railroad, Z Tower, State Route 46, Keyser, Mineral County, WV

19

Concept Maps & Schematic Diagrams as Devices for Documenting the Growth of Mathematical Knowledge  

Microsoft Academic Search

The major focus of this study is to trace the cognitive development of students throughout a mathematics course and to seek the qualitative differences between those of different levels of achievement. The aspect of the project described here concerns the use of concept maps constructed by the students at intervals during the course. From these maps, schematic diagrams were constructed

Mercedes McGowen; David Tall

2006-01-01

20

Iron silicides grown by solid phase epitaxy on a Si(111) surface: Schematic phase diagram  

Microsoft Academic Search

We have determined the schematic phase diagram in detail with high reliability for Fe silicides grown by solid phase epitaxy (SPE) on a Si(111)7×7 surface at wide Fe coverage (0.2-56monolayers) and subsequent annealing temperatures from 300 to 800°C . In the SPE growth, delta-7×7 , 1×1 , bcc-Fe(111)1×1 , 2×2 , c(8×4) , 3D-2×2 (alpha-FeSi2) , 3×3-R30° , beta-FeSi2 ,

K. Kataoka; K. Hattori; Y. Miyatake; H. Daimon

2006-01-01

21

Iron silicides grown by solid phase epitaxy on a Si(111) surface: Schematic phase diagram  

Microsoft Academic Search

We have determined the schematic phase diagram in detail with high reliability for Fe silicides grown by solid phase epitaxy (SPE) on a Si(111)7x7 surface at wide Fe coverage (0.2-56 monolayers) and subsequent annealing temperatures from 300 to 800 deg. C. In the SPE growth, δ-7x7, 1x1, bcc-Fe(111)1x1, 2x2, c(8x4), 3D-2x2 (α-FeSiâ), â(3)xâ(3)-R30 deg., β-FeSiâ, and fine polycrystalline phases are

K. Kataoka; K. Hattori; H. Daimon; Y. Miyatake

2006-01-01

22

Iron silicides grown by solid phase epitaxy on a Si(111) surface: Schematic phase diagram  

SciTech Connect

We have determined the schematic phase diagram in detail with high reliability for Fe silicides grown by solid phase epitaxy (SPE) on a Si(111)7x7 surface at wide Fe coverage (0.2-56 monolayers) and subsequent annealing temperatures from 300 to 800 deg. C. In the SPE growth, {delta}-7x7, 1x1, bcc-Fe(111)1x1, 2x2, c(8x4), 3D-2x2 ({alpha}-FeSi{sub 2}), {radical}(3)x{radical}(3)-R30 deg., {beta}-FeSi{sub 2}, and fine polycrystalline phases are formed on the Si(111) surface depending on Fe coverage and annealing temperature. We have characterized the surface periodic structures and morphologies of all the above Fe silicide phases using low-energy electron diffraction and scanning tunneling microscopy. Reflection high-energy electron diffraction also has been used to determine three-dimensional structures. Based on the overall view regarding the formations and changes of Fe silicide phases on a Si(111) surface, we discuss the growth mechanisms.

Kataoka, K. [Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192 (Japan); Hattori, K.; Daimon, H. [Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192 (Japan); CREST-JST, Kawaguchi, Saitama 332-0012 (Japan); Miyatake, Y. [UNISOKU Co., Ltd., Hirakata, Osaka 573-0131 (Japan)

2006-10-15

23

NUCPLOT: a program to generate schematic diagrams of protein-nucleic acid interactions.  

PubMed

Proteins that bind to DNA are found in all areas of genetic activity within the cell. To help understand how these proteins perform their various functions, it is useful to analyse which residues are involved in binding to the DNA and how they interact with the bases and sugar-phosphate backbone of nucleic acids. Here we describe a program called NUCPLOT which can automatically identify these interactions from the 3D atomic coordinates of the complex from a PDB file and generate a plot that shows all the interactions in a schematic manner. The program produces a PostScript output file representing hydrogen, van der Waals and covalent bonds between the protein and the DNA. The resulting diagram is both clear and simple and allows immediate identification of important interactions within the structure. It also facilitates comparison of binding found in different structures. NUCPLOT is a completely automatic program, which can be used for any protein-DNA complex and will also work for certain protein-RNA structures. PMID:9396800

Luscombe, N M; Laskowski, R A; Thornton, J M

1997-12-15

24

Schematic phase diagram and collective excitations in the collisional regime for trapped boson–fermion mixtures at zero temperature  

Microsoft Academic Search

We discuss the ground state and the small-amplitude excitations of dilute boson–fermion mixtures confined in spherical harmonic traps at T=0, assuming repulsive boson–boson interactions and with each component being in a single hyperfine state. From previous studies of the equilibrium density profiles we propose a schematic phase diagram in a plane defined by the variables abf\\/abb and abbkf(0), where abb

A. Minguzzi; M. P. Tosi

2000-01-01

25

Variety of iron silicides grown on Si(0 0 1) surfaces by solid phase epitaxy: Schematic phase diagram  

Microsoft Academic Search

We systematically studied the formation of various iron–silicide phases, grown on Si(001) surfaces by solid phase epitaxy, with scanning tunneling microscopy, low-energy electron diffraction and reflection high-energy electron diffraction. We found and studied the phases of c(2×2) islands, rectangle-like islands, elongated islands, layered islands, dome-like islands, eddy and cracked structures, and small clusters. A schematic phase diagram of these phases

H. Nakano; K. Maetani; K. Hattori; H. Daimon

2007-01-01

26

Schematic phase diagram and collective excitation in the collisional regime for trapped boson-fermion mixtures at zero temperature  

Microsoft Academic Search

We discuss the ground state and the small-amplitude excitations of dilute boson-fermion mixtures confined in spherical harmonic traps at $T = 0$, assuming repulsive boson-boson interactions and with each component being in a single hyperfine state. From previous studies of the equilibrium density profiles we propose a schematic phase diagram in a plane defined by the variables $a_{bf}\\/a_{bb}$ and $a_{bb}k_f^{(0)}$,

A. Minguzzi

2000-01-01

27

Injection engine as a control object. I. Schematic diagram of the engine and synthesis of a mathematical model  

Microsoft Academic Search

The paper is devoted to the analysis of injection engine as an object of automatic control by a built-in microprocessor system.\\u000a The schematic diagram of the engine is presented; controlled, measured, and input variables are indicated; a mathematical\\u000a model of the engine oriented to the use in analysis and synthesis of control systems is described. Transient processes and\\u000a static characteristics

D. N. Gerasimov; H. Javaherian; D. V. Efimov; V. O. Nikiforov

2010-01-01

28

LIGPLOT: a program to generate schematic diagrams of protein-ligand interactions.  

PubMed

The LIGPLOT program automatically generates schematic 2-D representations of protein-ligand complexes from standard Protein Data Bank file input. The output is a colour, or black-and-white, PostScript file giving a simple and informative representation of the intermolecular interactions and their strengths, including hydrogen bonds, hydrophobic interactions and atom accessibilities. The program is completely general for any ligand and can also be used to show other types of interaction in proteins and nucleic acids. It was designed to facilitate the rapid inspection of many enzyme complexes, but has found many other applications. PMID:7630882

Wallace, A C; Laskowski, R A; Thornton, J M

1995-02-01

29

DOMPLOT: a program to generate schematic diagrams of the structural domain organization within proteins, annotated by ligand contacts.  

PubMed

A program is described for automatically generating schematic linear representations of protein chains in terms of their structural domains. The program requires the co-ordinates of the chain, the domain assignment, PROSITE information and a file listing all intermolecular interactions in the protein structure. The output is a PostScript file in which each protein is represented by a set of linked boxes, each box corresponding to all or part of a structural domain. PROSITE motifs and residues involved in ligand interactions are highlighted. The diagrams allow immediate visualization of the domain arrangement within a protein chain, and by providing information on sequence motifs, and metal ion, ligand and DNA binding at the domain level, the program facilitates detection of remote evolutionary relationships between proteins. PMID:10360977

Todd, A E; Orengo, C A; Thornton, J M

1999-05-01

30

HERA--a program to draw schematic diagrams of protein secondary structures.  

PubMed

A program is described which generates hydrogen bonding diagrams of protein structures and optionally helical wheels and helical nets. The program can also beta-strands beta-strands and to automatically extract simple structural motifs such as hairpins or Greek keys. The program greatly reduces the effort required to produce these diagrams and offers considerable flexibility in the information which can be represented. The usefulness of the program is illustrated by several examples including comparing homologous families, correlating protein structure with attributes of individual residues, and extracting all examples of the psi-loop motif from the Brookhaven Data Bank. PMID:2281084

Hutchinson, E G; Thornton, J M

1990-01-01

31

Evaluating the effectiveness of visualization techniques for schematic diagrams in maintenance tasks  

Microsoft Academic Search

In order to perform daily maintenance and repair tasks in complex electrical and mechanical systems, technicians commonly utilize a large number of diagrams and documents detailing system properties in both electronic and print formats. In electronic document views, users typically are only provided with traditional pan and zoom features; however, recent advances in information visualization and illustrative rendering styles should

SungYe Kim; Insoo Woo; Ross Maciejewski; David S. Ebert; Timothy D. Ropp; Krystal M. Thomas

2010-01-01

32

A schematic diagram showing the various components of the embryonic aortic arch complex in the retroesophageal right subclavian artery.  

PubMed

A retroesophageal right subclavian artery, arising from the arch of the aorta as the terminal branch and passing dorsal to the esophagus, was found in five (1.2%) of 428 bodies donated for student dissection at Kumamoto University between 1993 and 2008. The presence of a retroesophageal right subclavian artery has been generally explained to be caused by the persistence of the normally eliminated part of the right dorsal aorta caudal to the seventh intersegmental artery and the disappearance of the normally patent right fourth aortic arch and the part of the right dorsal aorta cranial to the seventh intersegmental artery during the developmental process. However, the parts which remain or disappear are different in each case. With the aim of determining the portions eliminated or persisting and thereby gaining an understanding of the developmental process of the retroesophageal right subclavian artery in each instance, we made schematic diagrams showing the various components of the embryonic aortic arch complex as the prototype just before the anomaly occurred. Based on these diagrams, we conclude that immediately preceding the disappearance of the distal part of the right dorsal aorta and the dorsal part of the right sixth aortic arch, the third intersegmental artery was situated opposite to the fourth aortic arch and the seventh intersegmental artery was situated cranial to the point of junction of the right and left dorsal aortae. PMID:21246420

Kawai, Katsushi; Honma, Satoru; Kumagai, Yoshihiro; Koba, Yoshikazu; Koizumi, Masahiro

2011-01-19

33

Communications and forum : The basic wiring diagram of the brain  

Microsoft Academic Search

Considers the two main problems believed to remain in biology: the flow chart of man and all other living things, and the wiring diagram of the human brain. Outlines the tasks involved and sees the second one as requiring the unfolding of the cortex. Believes that this work requires confirmation by accurate computerised transformation. Discusses the performance of the main

Brennig James

1998-01-01

34

Beyond the wiring diagram: signalling through complex neuromodulator networks  

PubMed Central

During the computations performed by the nervous system, its ‘wiring diagram’—the map of its neurons and synaptic connections—is dynamically modified and supplemented by multiple actions of neuromodulators that can be so complex that they can be thought of as constituting a biochemical network that combines with the neuronal network to perform the computation. Thus, the neuronal wiring diagram alone is not sufficient to specify, and permit us to understand, the computation that underlies behaviour. Here I review how such modulatory networks operate, the problems that their existence poses for the experimental study and conceptual understanding of the computations performed by the nervous system, and how these problems may perhaps be solved and the computations understood by considering the structural and functional ‘logic’ of the modulatory networks.

Brezina, Vladimir

2010-01-01

35

The dream and reality of automated wiring systems  

SciTech Connect

This article examines the use of computer programs for automated substation/switchgear wiring in order to cut production costs associated with wiring diagrams and documentation. The topics of the article include automating the process, schematic capture editor, wiring diagram editor, design aids and documentation, display formats, and system benefits.

Manno, R.; Dugan, D.

1994-01-01

36

Determination of the Superconductor-Insulator Phase Diagram for One-Dimensional Wires  

NASA Astrophysics Data System (ADS)

We establish the superconductor-insulator phase diagram for quasi-one-dimensional wires by measuring a large set of MoGe nanowires. This diagram is roughly consistent with the Chakravarty-Schmid-Bulgadaev phase boundary, namely, with the critical resistance being equal to RQ=h/4e2. Deviations from this boundary for a small fraction of the samples prompt us to suggest an alternative phase diagram, which matches the data exactly. Transport properties of wires in the superconducting phase are dominated by phase slips, whereas insulating nanowires exhibit a weak Coulomb blockade behavior.

Bollinger, A. T.; Dinsmore, R. C., III; Rogachev, A.; Bezryadin, A.

2008-11-01

37

Fluctuation diagrams for hot-wire anemometry in subsonic compressible flows  

NASA Astrophysics Data System (ADS)

The concept of using 'fluctuation diagrams' for describing basic fluctuations in compressible flows was reported by Kovasznay in the 1950's. The application of this technique, for the most part, was restricted to supersonic flows. Recently, Zinovev and Lebiga published reports where they considered the fluctuation diagrams in subsonic compressible flows. For the above studies, the velocity and density sensitivities of the heated wires were equal. However, there are considerable data, much taken in the 1950's, which indicate that under some conditions the velocity and density sensitivities are not equal in subsonic compressible flows. Therefore, possible fluctuation diagrams are described for the cases where the velocity and density sensitivities are equal and the more general cases where they are unequal.

Stainback, P. C.; Nagabushana, K. A.

1991-12-01

38

Schematization of road networks  

Microsoft Academic Search

We study the problem of computing schematized versions of network maps , like railroad maps. Every path of the schematized map has two or three links with restricted orientations, and topologically, the schematized map must be equivalent to the input map. Our approach applies to several types of schematizations, and certain additional constraints can be added. In the general case

Sergio Cabello; Mark de Berg; Steven van Dijk; Marc J. van Kreveld; Tycho Strijk

2001-01-01

39

Dosage suppression genetic interaction networks enhance functional wiring diagrams of the cell.  

PubMed

Dosage suppression is a genetic interaction in which overproduction of one gene rescues a mutant phenotype of another gene. Although dosage suppression is known to map functional connections among genes, the extent to which it might illuminate global cellular functions is unclear. Here we analyze a network of interactions linking dosage suppressors to 437 essential genes in yeast. For 424 genes, we curated interactions from the literature. Analyses revealed that many dosage suppression interactions occur between functionally related genes and that the majority do not overlap with other types of genetic or physical interactions. To confirm the generality of these network properties, we experimentally identified dosage suppressors for 29 genes from pooled populations of temperature-sensitive mutant cells transformed with a high-copy molecular-barcoded open reading frame library, MoBY-ORF 2.0. We classified 87% of the 1,640 total interactions into four general types of suppression mechanisms, which provided insight into their relative frequencies. This work suggests that integrating the results of dosage suppression studies with other interaction networks could generate insights into the functional wiring diagram of a cell. PMID:21572441

Magtanong, Leslie; Ho, Cheuk Hei; Barker, Sarah L; Jiao, Wei; Baryshnikova, Anastasia; Bahr, Sondra; Smith, Andrew M; Heisler, Lawrence E; Choy, John S; Kuzmin, Elena; Andrusiak, Kerry; Kobylianski, Anna; Li, Zhijian; Costanzo, Michael; Basrai, Munira A; Giaever, Guri; Nislow, Corey; Andrews, Brenda; Boone, Charles

2011-05-15

40

Nano-Resolution X-ray Tomography for Deciphering Wiring Diagram of Mammalian Brain  

NASA Astrophysics Data System (ADS)

Neural circuits in the central nervous system are the substrate of various high-order brain functions. However, little is known about the mechanisms underlying neuronal information processing in the brain. Anatomical and functional graph structures of neural networks with actual connections will provide us with perspectives to elucidate the brain complexity. Here, we aim to develop a three-dimensional mouse brain atlas of neural circuits using nano-resolution x-ray tomography by synchrotron radiation. In addition to identifying a large number of synapses, our research will also clarify the structure of neuronal networks for understanding the most complex organ in the body. In this study, we observed metal-stained biological tissues of the mouse brain using hard x-ray Zernike-type phase-contrast microscopy with 60-nm resolution at SPring-8. As a result, the nano-resolution hard x-ray phase-contrast microscope revealed nerve fibers and organelles including mitochondria and synapses in the neural tissue. In the near future, this information will be utilized to begin deciphering the wiring diagram of the brain by using nano-resolution x-ray tomography.

Mizutani, H.; Sagara, H.; Takeuchi, A.; Ohigashi, T.; Yashiro, W.; Uesugi, K.; Suzuki, Y.; Momose, A.; Takagi, T.

2011-09-01

41

Foundational model of structural connectivity in the nervous system with a schema for wiring diagrams, connectome, and basic plan architecture.  

PubMed

The nervous system is a biological computer integrating the body's reflex and voluntary environmental interactions (behavior) with a relatively constant internal state (homeostasis)-- promoting survival of the individual and species. The wiring diagram of the nervous system's structural connectivity provides an obligatory foundational model for understanding functional localization at molecular, cellular, systems, and behavioral organization levels. This paper provides a high-level, downwardly extendible, conceptual framework--like a compass and map--for describing and exploring in neuroinformatics systems (such as our Brain Architecture Knowledge Management System) the structural architecture of the nervous system's basic wiring diagram. For this, the Foundational Model of Connectivity's universe of discourse is the structural architecture of nervous system connectivity in all animals at all resolutions, and the model includes two key elements--a set of basic principles and an internally consistent set of concepts (defined vocabulary of standard terms)--arranged in an explicitly defined schema (set of relationships between concepts) allowing automatic inferences. In addition, rules and procedures for creating and modifying the foundational model are considered. Controlled vocabularies with broad community support typically are managed by standing committees of experts that create and refine boundary conditions, and a set of rules that are available on the Web. PMID:21078980

Swanson, Larry W; Bota, Mihail

2010-11-15

42

Foundational model of structural connectivity in the nervous system with a schema for wiring diagrams, connectome, and basic plan architecture  

PubMed Central

The nervous system is a biological computer integrating the body's reflex and voluntary environmental interactions (behavior) with a relatively constant internal state (homeostasis)—promoting survival of the individual and species. The wiring diagram of the nervous system's structural connectivity provides an obligatory foundational model for understanding functional localization at molecular, cellular, systems, and behavioral organization levels. This paper provides a high-level, downwardly extendible, conceptual framework—like a compass and map—for describing and exploring in neuroinformatics systems (such as our Brain Architecture Knowledge Management System) the structural architecture of the nervous system's basic wiring diagram. For this, the Foundational Model of Connectivity's universe of discourse is the structural architecture of nervous system connectivity in all animals at all resolutions, and the model includes two key elements—a set of basic principles and an internally consistent set of concepts (defined vocabulary of standard terms)—arranged in an explicitly defined schema (set of relationships between concepts) allowing automatic inferences. In addition, rules and procedures for creating and modifying the foundational model are considered. Controlled vocabularies with broad community support typically are managed by standing committees of experts that create and refine boundary conditions, and a set of rules that are available on the Web.

Swanson, Larry W.; Bota, Mihail

2010-01-01

43

Language, Perception, and the Schematic Representation of Spatial Relations  

ERIC Educational Resources Information Center

|Schemas are abstract nonverbal representations that parsimoniously depict spatial relations. Despite their ubiquitous use in maps and diagrams, little is known about their neural instantiation. We sought to determine the extent to which schematic representations are neurally distinguished from language on the one hand, and from rich perceptual…

Amorapanth, Prin; Kranjec, Alexander; Bromberger, Bianca; Lehet, Matthew; Widick, Page; Woods, Adam J.; Kimberg, Daniel Y.; Chatterjee, Anjan

2012-01-01

44

A direct control strategy for UPQC in three-phase four-wire system  

Microsoft Academic Search

Based on the p-q-r theory, this paper presents a direct control strategy of unified power quality conditioner (UPQC) used in the nonlinear and unbalance three-phase four-wire system. A algorithm of calculating the series compensation current and shunt compensation voltage in the proposed system is introduced. An analysis of the proposed control strategy and its schematic diagram is described in particular.

Tan Zhili; Li Xun; Chen Jian; Kang Yong; Duan Shanxu

2006-01-01

45

Gender Schematic Development within the Family Context.  

ERIC Educational Resources Information Center

|Organizing the world into masculine and feminine categories is a process called "gender schematicity." High gender schematicity has been linked with children's inclination to self-select out of certain learning opportunities that they deem gender-inappropriate. This study examined gender schematicity among kindergartners and fourth-graders and…

Sokal, Laura; Seifert, Kelvin; Piotrowski, Caroline

46

Language, perception, and the schematic representation of spatial relations.  

PubMed

Schemas are abstract nonverbal representations that parsimoniously depict spatial relations. Despite their ubiquitous use in maps and diagrams, little is known about their neural instantiation. We sought to determine the extent to which schematic representations are neurally distinguished from language on the one hand, and from rich perceptual representations on the other. In patients with either left hemisphere damage or right hemisphere damage, a battery of matching tasks depicting categorical spatial relations was used to probe for the comprehension of basic spatial concepts across distinct representational formats (words, pictures, and schemas). Left hemisphere patients underperformed right hemisphere patients across all tasks. However, focused residual analyses using voxel-based lesion-symptom mapping (VLSM) suggest that (1) left hemisphere deficits in the representation of categorical spatial relations are difficult to distinguish from deficits in naming these relations and (2) the right hemisphere plays a special role in extracting schematic representations from richly textured pictures. PMID:22070948

Amorapanth, Prin; Kranjec, Alexander; Bromberger, Bianca; Lehet, Matthew; Widick, Page; Woods, Adam J; Kimberg, Daniel Y; Chatterjee, Anjan

2011-11-08

47

Language, perception, and the schematic representation of spatial relations  

PubMed Central

Schemas are abstract nonverbal representations that parsimoniously depict spatial relations. Despite their ubiquitous use in maps and diagrams, little is known about their neural instantiation. We sought to determine the extent to which schematic representations are neurally distinguished from language on the one hand, and from rich perceptual representations on the other. In patients with either left hemisphere damage or right hemisphere damage, a battery of matching tasks depicting categorical spatial relations was used to probe for the comprehension of basic spatial concepts across distinct representational formats (words, pictures, and schemas). Left hemisphere patients underperformed right hemisphere patients across all tasks. However, focused residual analyses using VLSM (voxel-based lesion-symptom mapping) suggest that (1) left hemisphere deficits in the representation of categorical spatial relations are difficult to distinguish from deficits in naming these relations and (2) the right hemisphere plays a special role in extracting schematic representations from richly textured pictures.

Amorapanth, Prin; Kranjec, Alexander; Bromberger, Bianca; Lehet, Matthew; Widick, Page; Woods, Adam J.; Kimberg, Daniel Y.; Chatterjee, Anjan

2011-01-01

48

Computer-generated schematic diagrams of protein structures.  

PubMed

Computer-generated pictures are essential for studying and comparing the structures of proteins that have been solved by x-ray crystallography. Stereoscopic pairs produced by a computer program are particularly useful in providing an intelligible portrayal of the molecular topology. PMID:7071602

Lesk, A M; Hardman, K D

1982-04-30

49

Interactive Presentation of Schematic Diagrams for Performance Support  

Microsoft Academic Search

Sixty-seven United States Navy maintainers (55 men and 12 women) representing both the aviation and surface communities participated in an experiment examining the efficacy of a simulation to assist technicians in rapidly understanding a system's state. Participants were assigned to one of three groups based on the technicians' experience and one of two experimental conditions: simulation (SIM) or technical manual

Katrina E. Ricci; Tyson A. Griffin; John C. Hodak

2008-01-01

50

GraSSML: accessible smart schematic diagrams for all  

Microsoft Academic Search

Graphical representation is a powerful way of conveying information. Its use has made life much easier for most sighted users,\\u000a but people with disabilities or users who work in environments where visual representations are inappropriate, cannot access\\u000a information contained in graphics, unless alternative descriptions are included. This paper describes an approach called Graphical\\u000a Structure Semantic Markup Languages (GraSSML), which aims

Zaineb Ben Fredj; David A. Duce

2007-01-01

51

GraSSML: accessible smart schematic diagrams for all  

Microsoft Academic Search

Graphical representations are a powerful way of conveying information. Their use has made life much easier for most sighted users, but people with disabilities or users who work in environments where visual representations are inappropriate cannot access information contained in graphics, unless alternative descriptions are included. We describe an approach called Graphical Structure Semantic Markup Languages (GraSSML) which aims at

Zaineb Ben Fredj; David A. Duce

2006-01-01

52

Computer-Generated Schematic Diagrams of Protein Structures  

Microsoft Academic Search

Computer-generated pictures are essential for studying and comparing the structures of proteins that have been solved by x-ray crystallography. Stereoscopic pairs produced by a computer program are particularly useful in providing an intelligible portrayal of the molecular topology.

Arthur M. Lesk; Karl D. Hardman

1982-01-01

53

Schematic driven layout of Reed Solomon encoders  

NASA Astrophysics Data System (ADS)

Two Reed Solomon error correcting encoders are presented. Schematic driven layout tools were used to create the encoder layouts. Special consideration had to be given to the architecture and logic to provide scalability of the encoder designs. Knowledge gained from these projects was used to create a more flexible schematic driven layout system.

Arave, Kari; Canaris, John; Miles, Lowell; Whitaker, Sterling

54

Assessing Schematic Knowledge of Introductory Probability Theory  

ERIC Educational Resources Information Center

The ability to identify schematic knowledge is an important goal for both assessment and instruction. In the current paper, schematic knowledge of statistical probability theory is explored from the declarative-procedural framework using multiple methods of assessment. A sample of 90 undergraduate introductory statistics students was required to…

Birney, Damian P.; Fogarty, Gerard J.; Plank, Ashley

2005-01-01

55

So Far (Schematically) yet So Near (Semantically)  

Microsoft Academic Search

In a multidatabase system, schematic conflicts between two objects are usually of interestonly when the objects have some semantic affinity. In this paper we try to reconcilethe two perspectives. We first define the concept of semantic proximity and provide asemantic taxonomy. We then enumerate and classify the schematic and data conflicts.We discuss possible semantic similarities between two objects that have

Amit P. Sheth; Vipul Kashyap

1992-01-01

56

Schematic eye with a gradient-index lens and aspheric surfaces.  

PubMed

A new schematic eye with aspheric surfaces and a radially varying refractive-index distribution lens is proposed. Image quality and spherical aberration are determined by use of ray tracing, and the results are presented as spot diagrams and compared with five existing model eyes. The proposed model provides the best image quality and lowest spherical aberration. PMID:15209245

Siedlecki, Damian; Kasprzak, Henryk; Pierscionek, Barbara K

2004-06-01

57

Semiotic Activity of Young Children in Play: The Construction and Use of Schematic Representations.  

ERIC Educational Resources Information Center

|Examined four- through six-year olds' ability to diagram the configuration of a toy railway set they had assembled and to reconstruct the railway based on drawings. Found that motivation had a significant influence on the accuracy of drawings. Results suggest that semiotic activity with the help of schematic representations or drawings is in the…

van Oers, Bert

1994-01-01

58

Task Filtered Display of Functional Diagrams for Flightline Maintenance.  

National Technical Information Service (NTIS)

This paper discusses a proposed design of the display of simplified schematics and writing diagrams in Interactive Electronic Technical Manual (IETMs) to support flightline maintenance. The paper reviews current theoretical and applied solutions to the di...

J. L. Wampler

1998-01-01

59

A schematic classification of general psychology  

Microsoft Academic Search

The elementary student is often bewildered by the presentation of technical names used to describe the various branches of psychology. Frequently he cannot distinguish between differences in points of view, methods of approach, and fields of activity. To clarify this situation the author has schematized the subdivisions of psychology. This schema attempts to show the historical growth of psychology and

C. A. Ruckmick

1926-01-01

60

Platform-independent method for computer aided schematic drawings  

SciTech Connect

A CAD/CAM method is disclosed for a computer system to capture and interchange schematic drawing and associated design information. The schematic drawing and design information are stored in an extensible, platform-independent format.

Vell, Jeffrey L. (Slingerlands, NY); Siganporia, Darius M. (Clifton Park, NY); Levy, Arthur J. (Fort Lauderdale, FL)

2012-02-14

61

Neural Schematics as a unified formal graphical representation of large-scale Neural Network Structures.  

PubMed

One of the major outcomes of neuroscientific research are models of Neural Network Structures (NNSs). Descriptions of these models usually consist of a non-standardized mixture of text, figures, and other means of visual information communication in print media. However, as neuroscience is an interdisciplinary domain by nature, a standardized way of consistently representing models of NNSs is required. While generic descriptions of such models in textual form have recently been developed, a formalized way of schematically expressing them does not exist to date. Hence, in this paper we present Neural Schematics as a concept inspired by similar approaches from other disciplines for a generic two dimensional representation of said structures. After introducing NNSs in general, a set of current visualizations of models of NNSs is reviewed and analyzed for what information they convey and how their elements are rendered. This analysis then allows for the definition of general items and symbols to consistently represent these models as Neural Schematics on a two dimensional plane. We will illustrate the possibilities an agreed upon standard can yield on sampled diagrams transformed into Neural Schematics and an example application for the design and modeling of large-scale NNSs. PMID:24167490

Ehrlich, Matthias; Schüffny, René

2013-10-24

62

Neural Schematics as a unified formal graphical representation of large-scale Neural Network Structures  

PubMed Central

One of the major outcomes of neuroscientific research are models of Neural Network Structures (NNSs). Descriptions of these models usually consist of a non-standardized mixture of text, figures, and other means of visual information communication in print media. However, as neuroscience is an interdisciplinary domain by nature, a standardized way of consistently representing models of NNSs is required. While generic descriptions of such models in textual form have recently been developed, a formalized way of schematically expressing them does not exist to date. Hence, in this paper we present Neural Schematics as a concept inspired by similar approaches from other disciplines for a generic two dimensional representation of said structures. After introducing NNSs in general, a set of current visualizations of models of NNSs is reviewed and analyzed for what information they convey and how their elements are rendered. This analysis then allows for the definition of general items and symbols to consistently represent these models as Neural Schematics on a two dimensional plane. We will illustrate the possibilities an agreed upon standard can yield on sampled diagrams transformed into Neural Schematics and an example application for the design and modeling of large-scale NNSs.

Ehrlich, Matthias; Schuffny, Rene

2013-01-01

63

Schematic concepts for schematic models of the real world: The Newtonian concept of force  

NSDL National Science Digital Library

High school and college students often carry out of traditional physics courses loose bundles of vague and undifferentiated concepts about physical objects and their properties. Within the framework of schematic modeling, a scientific concept can be defined explicitly with five schematic dimensions: domain, organization, quantification, expression, and employment. Based on the level of commensurability between scientific concepts and individual students' own concepts, students' cognitive evolution into the scientific realm can take different directions ranging from reinforcing existing concepts to constructing novel ones on completely new foundations. Such evolution is promoted in a student-centered, model-based instruction. The newtonian concept of force is discussed for illustration, along with the results of tutoring two groups of Lebanese students to develop this concept in a schematic modeling approach.

Halloun, Ibrahim

2005-11-23

64

Schematic representation of residue-based protein context-dependent data: an application to transmembrane proteins.  

PubMed

An algorithmic method for drawing residue-based schematic diagrams of proteins on a 2D page is presented and illustrated. The method allows the creation of rendering engines dedicated to a given family of sequences, or fold. The initial implementation provides an engine that can produce a 2D diagram representing secondary structure for any transmembrane protein sequence. We present the details of the strategy for automating the drawing of these diagrams. The most important part of this strategy is the development of an algorithm for laying out residues of a loop that connects to arbitrary points of a 2D plane. As implemented, this algorithm is suitable for real-time modification of the loop layout. This work is of interest for the representation and analysis of data from (1) protein databases, (2) mutagenesis results, or (3) various kinds of protein context-dependent annotations or data. PMID:10736778

Campagne, F; Weinstein, H

65

The Effect of Conceptual Diagrams on Aviation Mechanics' Technical Systems Understanding.  

ERIC Educational Resources Information Center

|A quasi-experimental study explored the effect of functional flow diagrams on technical system understanding. An individualized field training package which contained schematic diagrams that illustrated an aircraft's electrical system was complimented with functional flow diagrams. In a 4-week treatment, a control group of 10 students enrolled in…

Satchwell, Richard E.; Johnson, Scott D.

66

Building protein diagrams on the web with the residue-based diagram editor RbDe.  

PubMed

The residue-based diagram editor (RbDe) is web-based software that greatly simplifies the construction of schematic diagrams of proteins. Residue-based diagrams display the sequence of a given protein in the context of its secondary and tertiary structure. Such diagrams are frequently used to summarize mutations or sequence features, in the context of the overall topology of a protein. The initial version of RbDe was designed for transmembrane proteins and has enabled many users to create diagrams of large systems such as G protein-coupled receptors or transporters. We present an extended diagram editor that supports other families of proteins. Users can now import custom-diagram layouts, use them to render members of any protein family and generate high-quality output for publication purposes. RbDe is available free over the web, at http://icb.mssm.edu/crt/RbDe PMID:12824436

Skrabanek, Lucy; Campagne, Fabien; Weinstein, Harel

2003-07-01

67

Positioning instructive captions to improve learning from process diagrams in unfamiliar environments  

NASA Astrophysics Data System (ADS)

Process diagrams play an important role in developing the individual learner's meaningful understanding and interpretation of scientific knowledge. However, researchers suggest that learners may not appreciate the diagram's importance as a learning tool. The primary purpose of this experiment was to contribute to the existing body of knowledge about how to enhance learning from process diagrams. In particular, this experiment explored the effect of an instructive caption when learning from a particular process diagram, identified in this experiment as a step schematic. The instructive caption emphasized the meaningful organization and integration of the to be learned information. The experiment compared the effects of learning on three instructional treatments: an instructive caption placed prior to a step schematic, a step schematic with no instructive caption, and an instructive caption placed after the step schematic. One hundred and twenty-eight college students, with little or no advanced formal knowledge of meteorology (weather systems), participated in the experiment. The results of this experiment indicated that an instructive caption does not significantly affect the free recall of explanative information or the generation of problem solutions when learning from a step schematic. However, results of this experiment found a significant relationship between the recall of explanative idea units and problem solving performance. Further exploratory data analysis revealed a significant treatment-preference interaction for recall and problem solving criterion measures. Those learners preferring not to use diagrams performed better with an instructive caption placed prior to the step schematic than an instructive caption placed after the step schematic. The opposite pattern was true for those subjects preferring to use diagrams. Further research is required to determine the role of instructive captions when learning from process diagrams. In addition, learner preference for diagrams may contribute to the learner's cognitive processing of the information portrayed in process diagrams.

Latz, Rachel Dubois

2000-10-01

68

Schematic effects of social attitudes on information processing and recall  

Microsoft Academic Search

Examined the proposal that social attitudes have schematic effects on the processing of attitude-relevant information. It was predicted that (a) such attitudes schemata would be bipolar, with information organized around \\

Charles M. Judd; James A. Kulik

1980-01-01

69

Gender-Based Schematic Processing: An Empirical Investigation and Reevaluation  

Microsoft Academic Search

This study was designed to provide a test of two models of gender-based schematic processing: gender schema theory (Bem, 1981b) and self-schema theory (Markus, Crane, Bernstein, & Saladi, 1982). The former position stipulates that only sex-typed individuals should provide strong evidence for schematic processing of gender-related information, whereas the latter contends that individuals may exhibit such processing with respect to

Thomas J. Payne; Jane M. Connor; Gep Colletti

1987-01-01

70

A schematic model for density dependent vector meson masses  

SciTech Connect

A schematic two-level model consisting of a 'collective' bosonic state and an 'elementary' meson is constructed that provides interpolation from a hadronic description (a la Rapp/Wambach) to B/R scaling for the description of properties of vector mesons in dense medium. The development is based on a close analogy to the degenerate schematic model of Brown for giant resonances in nuclei.

Kim, Y. [Department of Physics, Hanyang University, Seoul 133-791 (Korea, Republic of); Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800 (United States); Rapp, R.; Brown, G. E. [Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800 (United States); Rho, Mannque [Service de Physique Theorique, CE Saclay, 91191 Gif-sur-Yvette (France)

1999-07-02

71

A schematic model for density dependent vector meson masses  

SciTech Connect

A schematic two-level model consisting of a {open_quotes}collective{close_quotes} bosonic state and an {open_quotes}elementary{close_quotes} meson is constructed that provides interpolation from a hadronic description (a la Rapp/Wambach) to B/R scaling for the description of properties of vector mesons in dense medium. The development is based on a close analogy to the degenerate schematic model of Brown for giant resonances in nuclei. {copyright} {ital 1999 American Institute of Physics.}

Kim, Y. [Department of Physics, Hanyang University, Seoul 133-791 (Korea); Rapp, R.; Brown, G.E. [Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800 (United States)] Rho, Mannque [Service de Physique Theorique, CE Saclay, 91191 Gif-sur-Yvette (France)

1999-07-01

72

High and low gender schematic children's release from proactive interference  

Microsoft Academic Search

Thirty-seven 4–5 year-old predominantly white children from moderate SES households, identified as high and low gender schematic, completed a Release from Proactive Interference task (RPI) comprised of drawings of same-sex gender-typed toys and animals. The RPI task assesses spontaneous comprehension, encoding, and short-term recall of items from two categories of information. As predicted, high gender schematic children demonstrated significantly greater

Gary D. Levy

1994-01-01

73

Venn Diagrams  

NSDL National Science Digital Library

This interactive problem provides an opportunity for children to become familiar with Venn diagrams, while reinforcing knowledge of number properties. Students must place the numbers from 1 to 40 into a Venn diagram of two sets with an intersection. The Teachers' Notes page offers rationale, suggestions for implementation, discussion questions, ideas for extension and support.

2007-09-01

74

Duality Diagrams  

Microsoft Academic Search

The duality between the s- and t-channel descriptions of strong-interaction scattering amplitudes and the assumption that in every channel the scattering proceeds via nonexotic resonances are exhibited by simple diagrams. The diagrams lead to simple derivations of some known consequences of these assumptions as well as to many new predictions which can be tested experimentally.

Haim Harari

1969-01-01

75

ApiNATOMY: a novel toolkit for visualizing multiscale anatomy schematics with phenotype-related information.  

PubMed

A significant proportion of biomedical resources carries information that cross references to anatomical structures across multiple scales. To improve the visualization of such resources in their anatomical context, we developed an automated methodology that produces anatomy schematics in a consistent manner,and provides for the overlay of anatomy-related resource information onto the same diagram. This methodology, called ApiNATOMY, draws upon the topology of ontology graphs to automatically lay out treemaps representing body parts as well as semantic metadata linking to such ontologies. More generally, ApiNATOMY treemaps provide an efficient and manageable way to visualize large biomedical ontologies in a meaningful and consistent manner. In the anatomy domain, such treemaps will allow epidemiologists, clinicians, and biomedical scientists to review, and interact with, anatomically aggregated heterogeneous data and model resources. Such an approach supports the visual identification of functional relations between anatomically colocalized resources that may not be immediately amenable to automation by ontology-based inferencing. We also describe the application of ApiNATOMY schematics to integrate, and add value to, human phenotype-related information—results are found at http://apinatomy.org. The long-term goal for the ApiNATOMY toolkit is to support clinical and scientific graphical user interfaces and dashboards for biomedical resource management and data analytics. PMID:22616108

de Bono, Bernard; Grenon, Pierre; Sammut, Stephen John

2012-05-01

76

Wire Maze  

NSDL National Science Digital Library

Students gain a basic understanding of electrical circuits. They build wire circuits and pass paperclips through the mazes, trying not to touch the wires. Touching a wire with a paperclip causes the circuit to close, which activates an indicator.

K-12 Outreach Office,

77

CDRP - TeleSynergy(R) - Wiring Diagrams  

Cancer.gov

Home About CDRP Background The Challenge Ahead Health Disparities Cooperative Planning Grant Objective and Scope U56 Award Mechanism Target Populations Funded Institutions Funded Institutions Programs' Presentations CDRP Symposium Presentations Clinical

78

COMPILATION OF UNCLASSIFIED PROJECT 102 CONTROLS AND INSTRUMENTATION SCHEMATIC DIAGRAMS, DRAWINGS AND PHOTOGRAPHS  

Microsoft Academic Search

A compilation is presented of drawings, photographs, sketches, and ; curves relevant to the D102-A system. It covers the reactor, engine, and ; auxiliary control systems with most emphasis being placed on the reactor control ; system. These drawings and photographs are assembled for reference and ; instruction purposes. (auth);

Showlater

1959-01-01

79

Schematic diagram editor and simulator on reliability and diagnostics of computer systems  

Microsoft Academic Search

A short analysis of the most popular types of tools for digital logic design is presented. The paper describes the design and implementation of software tools that could be used to teach students within the course \\

Galina Ivanova; Aneliya Ivanova; Ivailo Ivanov

2011-01-01

80

Using speech and touch to enable blind people to access schematic diagrams  

Microsoft Academic Search

A novel approach for enabling blind people to interact with computer-generated graphical information is presented. The paper discusses how computer-generated, text-based information is presented to blind people and then identifies the difficulties in providing similar access to the range of graphical information presented by computer systems. A computer-based system that allows blind users to read, create and edit one type

Paul Blenkhorn; David Gareth Evans

1998-01-01

81

NUCPLOT: a program to generate schematic diagrams of protein-nucleic acid interactions  

Microsoft Academic Search

Proteins that bind to DNA are found in all areas of genetic activity within the cell. To help understand how these proteins perform their various functions, it is useful to analyse which residues are involved in binding to the DNA and how they interact with the bases and sugar-phosphate backbone of nucleic acids. Here we describe a program called NUCPLOT

Nicholas M. Luscombe; Roman A. Laskowski; Janet M. Thornton

1997-01-01

82

Newborns' Recognition of Changing and Unchanging Aspects of Schematic Faces.  

ERIC Educational Resources Information Center

|Four experiments investigated newborns' ability to discriminate, recognize, and learn visual information embedded in the schematic face-like patterns preferred at birth. Results indicated that newborns discriminated face-like stimuli relying on their internal features and recognized a perceptual invariance between face-like configurations in…

Turati, Chiara; Simion, Francesca

2002-01-01

83

Internalization of Filmic Schematic Operations in Relation to Individual Differences.  

ERIC Educational Resources Information Center

|Two major hypotheses were tested in three experiments. The first hypothesis proposed that students can imitate and internalize filmic codes, to be used subsequently as covert schematized mediators. The second hypothesis was that subjects with low relevant aptitude scores would profit more than better able subjects from films which model for them…

Salomon, Gavrial

84

10. Photograph of a line drawing. 'PROCESS FLOW SCHEMATIC, GAS ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

10. Photograph of a line drawing. 'PROCESS FLOW SCHEMATIC, GAS PRODUCER PROCESS, BUILDING 10A.' Holston Army Ammunition Plant, Holston Defense Corporation. August 29, 1974. Delineator: G. A. Horne. Drawing # SK-1942. - Holston Army Ammunition Plant, Producer Gas Plant, Kingsport, Sullivan County, TN

85

Event-related potentials to schematic faces in social phobia  

Microsoft Academic Search

Social phobia has been associated with an attentional bias for angry faces. This study aimed at further characterising this attentional bias by investigating reaction times, heart rates, and ERPs while social phobics, spider phobics, and controls identified either the colour or the emotional quality of angry, happy, or neutral schematic faces. The emotional expression of angry faces did not interfere

Iris-Tatjana Kolassa; Stephan Kolassa; Frauke Musial; Wolfgang H. R. Miltner

2007-01-01

86

Simple procedure for schematic design of passive solar buildings  

SciTech Connect

A simple procedure for use during the schematic phase of passive solar building design is presented in this article. The procedure is quantitative and accurate enough to insure that designs based on the provided starting point values of the primary building parameters will be cost effective.

Wray, W.O.; Kosiewicz, C.E.

1984-01-01

87

Some Aspects of Individual Differences in Schematic Concept Formation.  

National Technical Information Service (NTIS)

A series of studies is presented in an initial attempt to address issues thought to be related to individual differences in schematic concept formation (SCF). The first two studies were concerned primarily with task development. It was found that a task w...

S. H. Evans S. H. Lane

1972-01-01

88

Basic Wiring.  

ERIC Educational Resources Information Center

|This module is the first in a series of three wiring publications; it serves as the foundation for students enrolled in a wiring program. It is a prerequisite to either "Residential Wiring" or "Commercial and Industrial Wiring." The module contains 16 instructional units that cover the following topics: occupational introduction; general safety;…

Kaltwasser, Stan; And Others

89

Phase Diagrams  

NSDL National Science Digital Library

This handout and problem set is a stand alone tutorial that introduces students to the basics of phase diagrams and the phase rule. It is a rather lengthy exercise, suitable as a homework assignment. It can replace lectures and yields superior learning.

Perkins, Dexter

90

Venn diagrams  

NSDL National Science Digital Library

These online resources offer varied opportunities to work with Venn diagrams, one of many tools used in logic and reasoning. Their use is especially helpful in learning foundational notions of definition and set theory. One of the five Process Standards promoted by NCTM, Reasoning and Proof requires middle school students to sharpen such skills as they learn to develop mathematical argument.

National Science Digital Library (NSDL) Middle School Portal Staff

2008-03-10

91

Thermodynamic Diagrams  

NASA Astrophysics Data System (ADS)

Thermodynamic data such as equilibrium constants, standard cell potentials, molar enthalpies of formation, and standard entropies of substances can be a very useful basis for an organized presentation of knowledge in diverse areas of applied chemistry. Thermodynamic data can become particularly useful when incorporated into thermodynamic diagrams that are designed to be easy to recall, to serve as a basis for reconstructing previous knowledge, and to determine whether reactions can occur exergonically or only with the help of an external energy source. Few students in our chemistry-based courses would want to acquire the depth of knowledge or rigor of professional thermodynamicists. But they should nevertheless learn how to make good use of thermodynamic data in their professional occupations that span the chemical, biological, environmental, and medical laboratory fields. This article discusses examples of three thermodynamic diagrams that have been developed for this purpose. They are the thermodynamic energy account (TEA), the total entropy scale, and the thermodynamic scale diagrams. These diagrams help in the teaching and learning of thermodynamics by bringing the imagination into the process of developing a better understanding of abstract thermodynamic functions, and by allowing the reader to keep track of specialist thermodynamic discourses in the literature.

Chaston, Scot

1999-02-01

92

Digital Wires  

NASA Astrophysics Data System (ADS)

We study hardware implementations of cellular automata as reliable, adjustable, and secure commication lines. We discuss energy efficient digital wires on a nano-scale, all-optical digital wires, and digital wires as power lines and present performance data of a prototype digital wire, a six cells wide and ten cells long Boolean network. We show that digital wires have the following advantages: (i) Fixed pulse shape (pulses have a rectangular shape with a constant height and a constant width and produce no echos); (ii) Robust against electric smog. Digital wires based on semiconductor technology are effectively inert against electro-magnetic radiation, except for low-frequency radiation (heat) and high frequency radiation (X-rays). Digital wires based on plasma technology have in addition a very high tolerance for heat and X-rays. In digital wire the pulse speed can be rapidly adjusted. Signals on digital wires can be encrypted. Some digital wires can be used as general purpose computers. The data and the code are the input of the wire. Then both travel along the wire and `collide'. The collision is the computation. The result travels to the end of the wire, for further processing, as parallel input by a CPU, an actuator, or another digital wire.

Brown, Benny; Hubler, Alfred

2009-03-01

93

A detailed paraxial schematic eye for the White Leghorn chick  

Microsoft Academic Search

We studied the normal ocular development of the chick (Gallus gallus domesticus, White Leghorn) up to 15 days of age using both longitudinal and cross-sectional methods. The change in refractive error,\\u000a corneal curvature and axial ocular distances were used to construct schematic eyes. Equations are presented which allow prediction\\u000a of refractive error changes associated with changes in vitreous chamber depth. The

Natalia V. Avila; Sally A. McFadden

2010-01-01

94

Modelled channel patterns in a schematized tidal inlet  

Microsoft Academic Search

Tidal inlets in the Dutch Wadden Sea show typical morphological features, i.e. westward oriented main inlet channel and ebb-tidal delta. The objective of this study is to find the governing physical processes of these morphological features. The study uses a 2DH process-based morphodynamic model (Delft3D) on a schematized model domain, with dimensions similar to the Ameland inlet in the Dutch

D. M. P. K. Dissanayake; J. A. Roelvink; M. van der Wegen

2009-01-01

95

Superconducting wire.  

National Technical Information Service (NTIS)

This invention consists of a method of producing superconducting wire by drawing a glass fiber with a melted powder of a superconducting wire inside the glass tube. After drawing, the glass fiber is heated to crystallize the superconducting compound. The ...

D. E. Day J. J. Petrovic F. D. Gac C. S. Ray

1991-01-01

96

Superconducting wire  

Microsoft Academic Search

This invention consists of a method of producing superconducting wire by drawing a glass fiber with a melted powder of a superconducting wire inside the glass tube. After drawing, the glass fiber is heated to crystallize the superconducting compound. The diameter of the superconducting wires is controlled by the rate at which the glass fiber s are drawn from the

D. E. Day; J. J. Petrovic; F. D. Gac; C. S. Ray

1991-01-01

97

Wire Maze  

NSDL National Science Digital Library

Learners create an electrical-circuit maze out of wire, then try to pass a paperclip through the maze without touching the wire. If the paper clip touches the wire, it closes the circuit, causing a light to come on or a buzzer to sound. This activity requires a basic understanding of how to build an electrical circuit.

Institute, Worcester P.

2005-01-01

98

Superconducting wire  

DOEpatents

This invention consists of a method of producing superconducting wire by drawing a glass fiber with a melted powder of a superconducting wire inside the glass tube. After drawing, the glass fiber is heated to crystallize the superconducting compound. The diameter of the superconducting wires is controlled by the rate at which the glass fiber s are drawn from the glass tube.

Day, D.E.; Petrovic, J.J.; Gac, F.D.; Ray, C.S.

1991-03-05

99

Effects of feature variations on attributions for schematic faces.  

PubMed

31 subjects classified 16 schematic faces on six dimensions. Attractiveness was generally associated with widely separated eyes, a short nose, and high feature placement. When features were considered in combination, faces with low placement were judged attractive, although the effect was mitigated by a narrow mouth. Previous findings concerning perceived age and gender were partially replicated, but folk wisdom linking intelligence to low placement (high forehead) was refuted. It is suggested that the relationship between individual features and attributions is nonlinear and interactive, and that researchers should investigate these hypotheses by exercising finer control over feature variations. PMID:8367568

McKelvie, S J

1993-08-01

100

Venn Diagrams  

NSDL National Science Digital Library

Unions, intersections, and differences: This can all be quite confusing to students trying to enter the potentially tricky world of Venn Diagrams. Fortunately, Alfredo Jiminez of Pennsylvania State University, Hazleton has created this handy Flash-enabled teaching application designed to provide students with an engaging way to learn about this subject. The project is party of the Digital Classroom Resources at the MAA Mathematical Sciences Digital Library, and visitors will find this particular learning activity quite easy to use. The interactive tool contains seven sections, including those dealing with the principles of union and intersection, distributive properties, and De Morgan's laws. Within each section, visitors can try their hand with a series of short questions and then take advantage of some review materials and, of course, a few basic tests.

Jiminez, Alfredo

101

Off-axis aberrations of a wide-angle schematic eye model.  

PubMed

A schematic eye model based on anatomical data, which had been previously designed to reproduce image quality on axis, has been transformed into a wide-angle model by simply adding a spherical image surface that plays the role of the retina. This model captures the main features of the wide-angle optical design of the human eye with minimum complexity: four conic optical surfaces plus a spherical image surface. Seidel aberrations (spherical aberration, coma, astigmatism, field curvature, and distortion), longitudinal and transverse chromatic aberrations, and overall monochromatic spot diagrams have been computed for this eye model and for field angles ranging from 0 degree to 60 degrees by both finite and third-order ray tracing. The modulation transfer function for each field angle has been computed as well. In each case our results have been compared with average experimental data found in the literature, showing a reasonably good agreement. The agreement between the model and experimental data is better off axis, mainly at moderate (10 degrees-40 degrees) field angles, than on axis. The model has been applied to simulate a variety of experimental methods in which image aberrations are estimated from measurements taken in the object space. Our results suggest that for some types of aberration, these methods may yield biased estimates. PMID:10435267

Escudero-Sanz, I; Navarro, R

1999-08-01

102

REVERSE FISHBONE DIAGRAM: A TOOL IN AID OF DESIGN FOR PRODUCT RETIREMENT  

Microsoft Academic Search

This paper describes a schematic representation of product retirement specification that aids in design for recycling and reuse. In the past decade, graphical representation of assembly process called the assembly fishbone diagram, has effectively assisted engineers to conduct design for assembly (DFA) and process failure modes and effects analysis (FMEA). On the other hand, environmentally conscious manufacturing requires engineers to

Kosuke Ishii; Burton Lee

1996-01-01

103

Mapping out the Superconductor-Insulator Phase Diagram for Nanowires.  

NASA Astrophysics Data System (ADS)

We establish the superconductor-insulator phase diagram for quasi-one-dimensional wires by measuring about 100 MoGe nanowires with length in a range 30-500 nm. All wires can be clearly separated into two groups: superconducting ones with the wire resistance dropping rapidly with cooling, roughly following the Arrhenius activation law, and insulating wires, which exhibit a weak Coulomb blockade behavior. The phase boundary between superconducting and insulating wires is consistent with the Chakravarty-Schmid-Bulgadaev criteria, namely with the critical resistance of a wire being equal to quantum resistance, i.e. 6.5 kOhms. We argue that small deviations from this phase boundary in short thin wires are caused by magnetic moments that forms on a wire surface. The evidence for the presence of the moments comes from an anomalous enhancement of the critical current by magnetic field detected at low temperatures.

Rogachev, Andrey

2009-03-01

104

Schematic of space-borne lidar surveying neritic seabed terrain  

NASA Astrophysics Data System (ADS)

Light Detection and Ranging (LiDAR) is a kind of new technical fast developing from 1960s especially in last 30 years. This technical processes high measurement accuracy, high resolution, powerful recognition capability and anti-interference capability. Space-Borne LiDAR which had wide field of view caused the big astronautic countries more attention, and it became an important part of global 3-D terrain detection, aerosphere detection, wind velocity detection, imagination and rendezvous and docking. In this paper, water depth measurement technology with airborne LiDAR was summarized. Neritic seabed terrain detection schematic was put forward, and then the key components and the different points of the schematic were analyzed. Pertinence suggestions were described in this paper which could supply further research on space-borne LiDAR.The space-borne laser emits several beams which form laser array, and detects the ground target by one dimension scanning. The laser includes multiple-beam emission system and multiple-signal reception system, but no flexible components in order to increasing the system dependability. The multiple-beam mode can make an observably increase of detection efficiency comparing with the single-beam mode. Each single laser pulse can return several different distance signals, so the repeat frequency can be lower. The laser pulse can be reflected by the sea surface and neritic seabed, so the depth can be calculated by the two reflection signals. The space-borne LiDAR data can be used to analyze sea gravitational field, change of the sea level and tide, sea weather and thickness of ice band.

Dou, Qiang; Zhang, Shuangna; Wang, Shaobo

2013-09-01

105

UN Wire  

NSDL National Science Digital Library

Provided by the UN Foundation, UN Wire is a new "daily news summary covering the United Nations, global affairs and key international issues." Users interested in the UN or global affairs will find UN Wire an excellent resource for quick, concise accounts of the day's major stories. Each day, UN Wire covers issues such as UN Affairs; Health; Women, Children, and Population; Environment; Trade; Humanitarian Aid; Human Rights; and Peacekeeping. Typical entries include a few short paragraphs and direct links to the original news source and/or related resources. Free registration is required and users can subscribe for free daily email summaries of the headlines. UN Wire should be available for email delivery in complete form in the next few months.

1999-01-01

106

16 CFR Figure 3 to Subpart A of... - Flooring Radiant Tester Schematic Side Elevation  

Code of Federal Regulations, 2010 CFR

...Commercial Practices 2 2009-01-01 2009-01-01 false Flooring Radiant Tester Schematic Side Elevation 3 Figure 3 to...Subpt. A, Fig. 3 Figure 3 to Subpart A of Part 1209âFlooring Radiant Tester Schematic Side Elevation...

2009-01-01

107

16 CFR Figure 3 to Subpart A of... - Flooring Radiant Tester Schematic Side Elevation  

Code of Federal Regulations, 2010 CFR

...Commercial Practices 2 2010-01-01 2010-01-01 false Flooring Radiant Tester Schematic Side Elevation 3 Figure 3 to...Subpt. A, Fig. 3 Figure 3 to Subpart A of Part 1209âFlooring Radiant Tester Schematic Side Elevation...

2010-01-01

108

Gender Schematicity, Gender Identity Salience, and Gender-Linked Language Use  

ERIC Educational Resources Information Center

Using self-categorization theory, the effects of sex, chronic gender accessibility (i.e., gender schematicity), and gender identity salience on gender-linked language use in e-mail are examined. Results confirmed interactive effects only. Gender schematic men and women whose gender was salient used typical gender-linked language (e.g., men used…

Palomares, Nicholas A.

2004-01-01

109

Stretching Wires  

NSDL National Science Digital Library

In this activity, learners determine the elastic and plastic properties of different types of metal wires. Learners discover that wires of the same gauge, but made of different metals, typically support different loads (masses) before going through the elastic to plastic transition. Learners also learn the difference between elastic deformation, which is recoverable after the load is removed, and plastic deformation, which is not recoverable. Note: one way to save time on this lab is to have different groups test different metals.

Urbana-Champaign, University O.

2013-01-04

110

Diagrams about Thoughts about Thoughts about Diagrams  

Microsoft Academic Search

The study of diagrammatic reasoning often focuses on computational models of diagram use rather than on studies of human performance. This paper considers diagrams as a notational system that can be used and studied in an experimental context. It presents a review of the experimental psychology literature rather than a complete theoretical framework, and is intended as an introduction to

Alan F. Blackwell

1997-01-01

111

No Wires.  

ERIC Educational Resources Information Center

|The University of California at Santa Cruz has completed a successful test of a wireless computer network that would enable students and professors to get on line from anywhere on campus. The network, linked by radio waves, could save millions of dollars in campus wiring costs and would better meet student and faculty information needs. (MSE)|

DeLoughry, Thomas J.

1995-01-01

112

Electrophysical properties of metallic wire photonic crystals  

NASA Astrophysics Data System (ADS)

Simple nonintersecting thin metallic wire photonic crystals are studied using the integral equation method based on the Green's function for periodically arranged sources. A wavenumber- and wavevector-dependent effective permittivity tensor is derived upon homogenization, and the band diagram and the per-mittivity for the lower dispersion branch are calculated.

Davidovich, M. V.; Stephuk, J. V.; Shilovskii, P. A.

2012-03-01

113

Nesting in Euler Diagrams  

Microsoft Academic Search

This paper outlines the notion of nesting in Euler diagrams, and how nesting aects the interpretation and construction of such diagrams. After setting up the necessary definitions for Euler diagrams at concrete syntax and abstract levels, the notion of nestedness is introduced at the concrete level, then an equivalent notion is given at the abstract level. The natural progression to

Jean Flower; John Howse; John Taylor

2003-01-01

114

Wide-field schematic eye models with gradient-index lens  

Microsoft Academic Search

We propose a wide-field schematic eye model, which provides a more realistic description of the optical system of the eye in relation to its anatomical structure. The wide-field model incorporates a gradient-index (GRIN) lens, which enables it to fulfill properties of two well-known schematic eye models, namely, Navarro's model for off-axis aberrations and Thibos's chromatic on-axis model (the Indiana eye).

Alexander V. Goncharov; Chris Dainty

2007-01-01

115

The effect of gender-schematic processing on decisions about sex-inappropriate sport behavior  

Microsoft Academic Search

This research investigates the effect of gender-schematic processing on decisions to reject sex-inappropriate sports. Sex-typed subjects expressly state concerns about the gender appropriateness of the sport more often than androgynous and undifferentiated subjects. Moreover, they rate gender-based factors as more important to their decisions than the latter two groups. Second, we assess whether gender-schematic processing of the self extends to

Sherri Matteo

1988-01-01

116

A schematic diagram showing the various components of the embryonic aortic arch complex in the retroesophageal right subclavian artery  

Microsoft Academic Search

A retroesophageal right subclavian artery, arising from the arch of the aorta as the terminal branch and passing dorsal to\\u000a the esophagus, was found in five (1.2%) of 428 bodies donated for student dissection at Kumamoto University between 1993 and\\u000a 2008. The presence of a retroesophageal right subclavian artery has been generally explained to be caused by the persistence\\u000a of

Katsushi Kawai; Satoru Honma; Yoshihiro Kumagai; Yoshikazu Koba; Masahiro Koizumi

117

[Different applications of various wire alloys in fixed appliance technic].  

PubMed

Steel, beta-Titanium and NiTi archwires (0.016 inch) as well as twisted steel wires (0.0175 inch) were subjected to a bending test. The results were presented graphically. Steel (Tru-Chrome), beta-Titanium (TMA), the twisted steel wires and only one NiTi wire (Nitinol) showed linear force-deflection-diagrams. The other NiTi alloys showed a curved line with a constant force in the middle part. The superelastic wires delivered the same initial force, whether 2 or 4 mm activated. The larger the deformation the longer became the range with a constant force (superelasticity). With an activation of 1 mm a conventional force deflection diagram was found. The steel wire (Tru-Chrome) showed the steepest curve, followed by TMA, Nitinol, some superelastic wires, Twistflex and Respond as well as Pentacat. The last two wires showed an identical diagram. The NiTi-alloy Sentalloy yellow was comparable to Wild Cat, Sentalloy blue to Respond. Some examples of the application of the different arch wires in patients are presented. PMID:2639865

Bantleon, H P; Droschl, H; Stern, G

1989-01-01

118

Superconducting wires  

SciTech Connect

The requirement of high critical current density has prompted extensive research on ceramic processing of high-T/sub c/ superconductors. An overview of wire fabrication techniques and the limitations they impose on component design will be presented. The effects of processing on microstructure and critical current density will also be discussed. Particle alignment has been observed in extruded samples which is attributed to high shear stresses during plastic forming. Composites of superconductor and silver in several configurations have been made with little deleterious effect on the superconducting properties. 35 refs., 2 figs., 1 tab.

Lanagan, M.T.; Poeppel, R.B.; Singh, J.P.; Dos Santos, D.I.; Lumpp, J.K.; Dusek, J.T.; Goretta, K.C.

1988-06-01

119

Individual Differences in Race Schematicity as Predictors of African American and White Children's Race-Relevant Memories and Peer Preferences  

Microsoft Academic Search

Race schematicity, memories for racially stereotyped portrayals, and race-based peer preferences of 70 young children (32 African American, 38 White) were assessed. Consistent with schema-based models of stereotyping, race schematicity was positively and significantly associated with memory distortions of racial stereotype-inconsistent drawings into stereotype-consistent ones. Conversely, race schematicity was negatively and significantly associated with accurate memories for racial stereotype-inconsistent content,

Gary D. Levy

2000-01-01

120

Hot-wire anemometry  

Microsoft Academic Search

A brief historical survey of hot-wire anemometry is presented and questions of hot-wire response are investigated, taking into account sensor properties, steady-heat-loss laws, the dynamic response of the wires, the sensitivity coefficients of the wires, the characteristics of a wire of finite length, the spatial resolution of hot wires, and the aerodynamic perturbations of the probes. A description of electronic

G. Comte-Bellot

1976-01-01

121

Structure Flow Diagram Generator.  

National Technical Information Service (NTIS)

The Structure Flow Diagram Generator provides the user with a convenient, easy-to-use, and less time-consuming way of diagramming the overall structure of a program. It allows for several options including segment and overlay numbers, and the inclusion of...

S. M. Adams

1989-01-01

122

Formalizing Spider Diagrams  

Microsoft Academic Search

Geared to complement UML and to the specification of large software systems by non-mathematicians,spider di- agrams are a visual language that generalizes the popu- lar and intuitive Venn diagrams and Euler circles. The language design emphasized scalability and expressiveness while retaining intuitiveness. In this extended abstract we describe spider diagrams from a mathematical standpoint and show how their formal semantics

Joseph Gil; John Howse; Stuart Kent

1999-01-01

123

Sequence Diagrams for Mobility  

Microsoft Academic Search

There are several kinds of UML diagrams for convenient modelling of behaviour, but these diagrams can be hardly used for modelling mobility. The situa- tion is not very different in the case of agent languages. There exist already some pro- posals for modelling mobility of interacting agents by graphical notations, but these notations are rather not very intuitive and hard

Piotr Kosiuczenko

2002-01-01

124

Lenses and Ray Diagrams  

NSDL National Science Digital Library

This is the first time that students will draw technical ray diagrams (in previous experiments, they simply sketched the rays). They need a little instruction in drawing ray diagrams before they can do it, so the activity is not purely inquiry. But it is

Horton, Michael

2009-05-30

125

Failure diagrams for unidirectional  

Microsoft Academic Search

Pertinent failure processes in unidirectional fiber metal-matrix composites (MMCs) have been identified and analyzed. The critical conditions for interface delamination in several composites are compared with the theoretical delamination diagram proposed by He and Hutchinson, in which interface delamination and fiber fracture are delineated on the basis of their relative tough-ness values. It is shown that the delamination diagram does

K. S. Chan

1993-01-01

126

Hertzsprung-Russell Diagram  

NASA Astrophysics Data System (ADS)

The Hertzsprung-Russell diagram (HR-diagram), pioneered independently by EJNAR HERTZSPRUNG and HENRY NORRIS RUSSELL, is a plot of the star luminosity versus the surface temperature. It stems from the basic relation for an object emitting thermal radiation as a black body: ...

Chiosi, C.; Murdin, P.

2000-11-01

127

How to Interpret Circuit Diagrams  

NSDL National Science Digital Library

This site presents an explanation of how to interpret circuit diagrams. Two diagrams show the difference between a "short hand" circuit diagram and a more detailed one. The detailed circuit diagram is useful for those first learning circuits in an effort to eventually understand the "short hand" diagram without difficulty.

Lesurf, Jim

2013-06-07

128

Perceptual Grouping, Not Emotion, Accounts for Search Asymmetries with Schematic Faces  

ERIC Educational Resources Information Center

|Several different explanations have been proposed to account for the search asymmetry (SA) for angry schematic faces (i.e., the fact that an angry face target among friendly faces can be found faster than vice versa). The present study critically tested the perceptual grouping account, (a) that the SA is not due to emotional factors, but to…

Becker, Stefanie I.; Horstmann, Gernot; Remington, Roger W.

2011-01-01

129

Recognition of Schematic Facial Displays of Emotion in Parents of Children with Autism  

ERIC Educational Resources Information Center

Performance on an emotional labeling task in response to schematic facial patterns representing five basic emotions without the concurrent presentation of a verbal category was investigated in 40 parents of children with autism and 40 matched controls. "Autism fathers" performed worse than "autism mothers," who performed worse than controls in…

Palermo, Mark T.; Pasqualetti, Patrizio; Barbati, Giulia; Intelligente, Fabio; Rossini, Paolo Maria

2006-01-01

130

Off-axis aberrations of a wide-angle schematic eye model  

Microsoft Academic Search

A schematic eye model based on anatomical data, which had been designed before to reproduce image quality on-axis, has been transformed into a wide angle model, by simply adding a spherical image surface that plays the role of the retina. This model captures the main features of the wide angle optical design of the human eye, with minimum complexity: 4

Isabel Escudero-Sanz; Rafael Navarro

1999-01-01

131

Memory for Schematic and Categorical Information: A Replication and Extension of Rabinowitz and Mandler (1983)  

Microsoft Academic Search

Rabinowitz and Mandler (1983) found that information organized schematically is better recalled than the same information organized categorically. This was taken as evidence that interitem connections are richer in a schema than in a category. The present experiment replicated this finding and revealed a confound in Rabinowitz and Mandler’s studies. Specifically, their schema list was easier to remember than their

Mustaq Khan; Allan Paivio

1988-01-01

132

Use of a Modified Stroop Task to Examine Appearance-Schematic Information Processing in College Women  

Microsoft Academic Search

A computerized Stroop color-naming task was usedto compare the information processing of 55appearance-schematic and 50 appearance-aschematic women,based on their scores on the Appearance SchemasInventory (ASI). Participants color-named appearancewords (e.g., OVERWEIGHT, LIPSTICK ) and nonappearancewords (e.g., OBNOXIOUS, BRIDEGROOM ) after exposure toeither a neutral condition or a \\

Andrew S. Labarge; Thomas F. Cash; Timothy A. Brown

1998-01-01

133

Recognition of schematic facial displays of emotion in parents of children with autism  

Microsoft Academic Search

Performance on an emotional labeling task in response to schematic facial patterns representing five basic emotions without the concurrent presentation of a verbal category was investigated in 40 parents of children with autism and 40 matched controls. ‘Autism fathers’ performed worse than ‘autism mothers’, who performed worse than controls in decoding displays representing sadness or disgust.This indicates the need to

Mark T. Palermo; Patrizio Pasqualetti; Giulia Barbati; Fabio Intelligente; Paolo Maria Rossini

2006-01-01

134

Recognition of Schematic Facial Displays of Emotion in Parents of Children with Autism  

ERIC Educational Resources Information Center

|Performance on an emotional labeling task in response to schematic facial patterns representing five basic emotions without the concurrent presentation of a verbal category was investigated in 40 parents of children with autism and 40 matched controls. "Autism fathers" performed worse than "autism mothers," who performed worse than controls in…

Palermo, Mark T.; Pasqualetti, Patrizio; Barbati, Giulia; Intelligente, Fabio; Rossini, Paolo Maria

2006-01-01

135

Word Completion in Chronic Pain: Evidence for Schematic Representation of Pain?  

Microsoft Academic Search

Schematic representation of pain information was investigated in chronic pain patients, health professionals, and nonpatient controls. Under the guise of an English-language experiment, Ss were presented with 12 word stems to be completed with the first 2 English words that came to mind. Four of the stems could be completed with sensory pain words, 4 with affective, and 4 with

Lindsey C. Edwards; Shirley A. Pearce

1994-01-01

136

Windows: Life after Wire.  

ERIC Educational Resources Information Center

|Although wired glass is extremely common in school buildings, the International Building Code adopted new standards that eliminate the use of traditional wired glass in K-12 schools, daycare centers, and athletic facilities. Wired glass breaks easily, and the wires can cause significant injuries by forming dangerous snags when the glass breaks.…

Razwick, Jerry

2003-01-01

137

Novel Gapped Quantum Wire  

NASA Astrophysics Data System (ADS)

High quality state of the art quantum wires (QWRs) can be fabricated by the novel cleaved edge overgrowth technique, proposed by (Pfeiffer et al., 1990). Transverse quantization in these QWRs leads to a succession of nested energy bands. With the lowest two successive energy levels occupied, gapped phases are possible including, e.g, an intersubband charge density wave (ICDW) and a Cooper phase with strong superconducting fluctuations (Starykh et al., 2000). Due to the possibility of density reorganization, in which it becomes favorable for the two lowest subbands to match their densities, the ICDW is usually the most likely state. Recently, by exploiting the valley degeneracy in AlAs, a single QWR has been fabricated with two degenerate nonoverlapping bands separated in k space by half an Umklapp vector (Moser et al. 2004). For low densities this structure is able to access a multiple subband regime that is not subject to the density reorganizing ICDW, leaving the Cooper phase to flourish. Using Abelian bosonization, we explore the relevant interaction terms for this system, including Umklapp assisted Cooper scattering, and discuss the phase diagram.

Datta, Trinanjan

2005-03-01

138

Novel Gapped Quantum Wire  

NASA Astrophysics Data System (ADS)

High quality state of the art quantum wires (QWRs) can be fabricated by the novel Cleaved Edge Overgrowth (CEO) technique, proposed by (Pfeiffer et al, 1990). Transverse quantization in these QWRs leads to a succession of nested energy bands. With the lowest two successive energy levels occupied, gapped phases are possible including, e.g., an intersubband charge density wave (ICDW) and a Cooper phase with strong superconducting fluctuations (Starykh et al, 2000). Due to the possibility of density reorganization, in which it becomes favorable for the two lowest subbands to match their densities, the ICDW is usually the most likely state. Recently, by exploiting the valley degeneracy in AlAs, a single QWR has been fabricated with two degenerate nonoverlapping bands separated in k space by half an Umklapp vector (Moser et al 2004). For low densities the structure is able to access a multiple subband regime that is not subject to the density reorganizing ICDW, leaving a Cooper phase to flourish. Using Abelian bosonization, we explore the relevant interaction terms for this system, including Umklapp assisted Cooper scattering and discuss the phase diagram.

Datta, Trinanjan

2005-04-01

139

16 CFR Figure 4 to Subpart A of... - Flooring Radiant Panel Tester Schematic Low Flux End, Elevation  

Code of Federal Regulations, 2010 CFR

...Commercial Practices 2 2009-01-01 2009-01-01 false Flooring Radiant Panel Tester Schematic Low Flux End, Elevation 4...Subpt. A, Fig. 4 Figure 4 to Subpart A of Part 1209âFlooring Radiant Panel Tester Schematic Low Flux End, Elevation...

2009-01-01

140

16 CFR Figure 4 to Subpart A of... - Flooring Radiant Panel Tester Schematic Low Flux End, Elevation  

Code of Federal Regulations, 2010 CFR

...Commercial Practices 2 2010-01-01 2010-01-01 false Flooring Radiant Panel Tester Schematic Low Flux End, Elevation 4...Subpt. A, Fig. 4 Figure 4 to Subpart A of Part 1209âFlooring Radiant Panel Tester Schematic Low Flux End, Elevation...

2010-01-01

141

Plutonium Predominance Region Diagrams.  

National Technical Information Service (NTIS)

Four plutonium predominance region diagrams, a technique for estimating the solubility of hydrous plutonium(IV) oxide, and a method for comparing valence state distributions of uranium, neptunium and plutonium are described.

G. L. Silver

1975-01-01

142

Network Legos: Building Blocks of Cellular Wiring Diagrams  

Microsoft Academic Search

Publicly-available data sets provide detailed and large-scale information on multiple types of molecular interaction networks in a number of model organisms. These multi-modal universal networks cap- ture a static view of cellular state. An important challenge in systems biology is obtaining a dynamic perspective on these networks by inte- grating them with gene expression measurements taken under multiple conditions. We

T. M. Murali; Corban G. Rivera

2007-01-01

143

Servo Motor Diagramming and Wiring Lab (Instructor Guide)  

NSDL National Science Digital Library

This lab activity was completed as part of an NSF-funded externship program administered by the High Tech Workforce Initiative at Maricopa Community Colleges. Students will apply their knowledge of electrical power, servo control systems and servo motor properties to real-world scenarios. This lab is part of a servo systems course in an Industrial Operations Technology AAS program, using Amatrol curriculum and equipment. It can be done in conjunction with, or as an adaptation or replacement of, Lab Experiments 4-2 and 4-3 in the Amatrol Electro Servo Learning System materials.

Perry, Clyde

2012-12-25

144

Stretched Wire Mechanics  

SciTech Connect

Stretched wires are beginning to play an important role in the alignment of accelerators and synchrotron light sources. Stretched wires are proposed for the alignment of the 130 meter long LCLS undulator. Wire position technology has reached sub-micron resolution yet analyses of perturbations to wire straightness are hard to find. This paper considers possible deviations of stretched wire from the simple 2-dimensional catenary form.

Bowden, Gordon; /SLAC

2005-09-06

145

Venn Diagram Shape Sorter  

NSDL National Science Digital Library

This interactive Java applet helps students explore attributes of objects by sorting different sized, colored, shapes into Venn Diagrams. The user chooses the type of Venn Diagram including 2 intersecting circles, 2 non-intersecting circles, or a single circle. Two modes include "make the rule," where users create the rules of the circles and then sort, or "guess the rule," where users attempt to sort the shapes into the circles in order to guess the rule the computer has chosen.

2005-01-01

146

Failure diagrams for unidirectional  

Microsoft Academic Search

Pertinent failure processes in unidirectional fiber metal-matrix composites (MMCs) have been identified and analyzed. The\\u000a critical conditions for interface delamination in several composites are compared with the theoretical delamination diagram\\u000a proposed by He and Hutchinson, in which interface delamination and fiber fracture are delineated on the basis of their relative\\u000a tough-ness values. It is shown that the delamination diagram does

K. S. Chan

1993-01-01

147

UV-diagram: A Voronoi diagram for uncertain data  

Microsoft Academic Search

The Voronoi diagram is an important technique for answering nearest-neighbor queries for spatial databases. In this paper, we study how the Voronoi diagram can be used on uncertain data, which are inherent in scientific and busines s applications. In particular, we propose the Uncertain-Voronoi Diagram (or UV-diagram in short). Conceptually, the data space is divided into distinct \\

Reynold Cheng; Xike Xie; Man Lung Yiu; Jinchuan Chen; Liwen Sun

2010-01-01

148

Concealed wire tracing apparatus  

SciTech Connect

An apparatus and method that combines a signal generator and a passive signal receiver to detect and record the path of partially or completely concealed electrical wiring without disturbing the concealing surface. The signal generator applies a series of electrical pulses to the selected wiring of interest. The applied pulses create a magnetic field about the wiring that can be detected by a coil contained within the signal receiver. An audible output connected to the receiver and driven by the coil reflects the receivers position with respect to the wiring. The receivers audible signal is strongest when the receiver is directly above the wiring and the long axis of the receivers coil is parallel to the wiring. A marking means is mounted on the receiver to mark the location of the wiring as the receiver is directed over the wiring's concealing surface. Numerous marks made on various locations of the concealing surface will trace the path of the wiring of interest.

Kronberg, James W. (Aiken, SC)

1994-01-01

149

Addressing water vaporization in the vicinity of an exploding wire  

SciTech Connect

The phase state of thin ({approx}1 {mu}m) layer of water adjacent to the surface of rapidly heated thin wire 100{+-}50 {mu}m in radius is analyzed by computer hydrodynamic calculation. It is shown that when heating of a wire to a temperature of 420 deg. C is achieved in less than {approx}500 ns, the trajectory of the phase state is contained in the liquid part of the phase diagram. This suggests additional proof of and an explanation for the absence of shunting plasma discharge in fast underwater electrical wire explosions.

Grinenko, A.; Gurovich, V. Tz.; Krasik, Ya. E.; Dolinsky, Yu. [Physics Department, Technion, 32000 Haifa (Israel); Department of Mechanical Engineering, Ben Gurion University, 84105 Beer-Sheva (Israel)

2006-12-01

150

Minkowski Diagram Model  

NSDL National Science Digital Library

The Minkowski Diagram model displays the spacetime diagrams for two inertial observers. One or two events may be displayed and moved with the mouse. Optionally, the corresponding light cones may be shown, as well as the simultaneity lines in both reference frames. The spacetime interval is automatically computed. The simulation may be used to discuss simultaneity and causality in special relativity. You can modify this simulation if you have Ejs installed by right-clicking within the plot and selecting "Open Ejs Model" from the pop-up menu item. The Minkowski Diagram model was created using the Easy Java Simulations (Ejs) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_ehu_special_relativity_minkowski.jar file will run the program if Java is installed. Please note that this resource requires at least version 1.5 of Java (JRE).

Aguirregabiria, Juan

2011-09-09

151

Scrutinizing UML Activity Diagrams  

NASA Astrophysics Data System (ADS)

Building an information system involves two processes: conceptual modeling of the “real world domain” and designing the software system. Object-oriented methods and languages (e.g., UML) are typically used for describing the software system. For the system analysis process that produces the conceptual description, object-oriented techniques or semantics extensions are utilized. Specifically, UML activity diagrams are the “flow charts” of object-oriented conceptualization tools. This chapter proposes an alternative to UML activity diagrams through the development of a conceptual modeling methodology based on the notion of flow.

Al-Fedaghi, Sabah

152

Schematic or taxonomic organisation of the reality and the development of class logic  

Microsoft Academic Search

The experiment studied the effect of various methods of organising reality (taxonomic vs. schematic) on success in inclusion and logical complementation tasks. Seventy-two nine-year-old children were divided into four groups on the basis of their logical structuring abilities. Using three sets of material (Animals, Plants, Means of Transportation), the subjects performed a sorting task and an evaluation task in which

Pierre Barrouillet

1994-01-01

153

Processing strategies used by dysphoric individuals: Self-derogating, non-self-enhancing, or schematic?  

Microsoft Academic Search

To competitively test four models of depressive cognition, this study compared the processing strategies used by dysphorics with those used by nondysphorics. Thus, the study was designed to detect which strategies dysphoric and nondysphoric subjects used to process information: (a) data-driven (unbiased), (b) self-derogating (negatively biased), (c) self-enhancing (positively biased), or (d) schematic (self-verifying bias). Subjects took five tests; after

Steven J. Morris

1996-01-01

154

Ratings of gender appropriateness of sports participation: Effects of gender-based schematic processing  

Microsoft Academic Search

The domain of sports and physical activity has traditionally been considered to be appropriate for men and not compatible with the feminine role. Because gender-based schematic processing has been shown to affect attitudes and behavior, there might be differences in the categorization of sports as masculine or feminine, between sex-typed and non-sex-typed individuals. The findings in this study, including 104

Nathalie Koivula

1995-01-01

155

Hierarchical Ordering of Schematic Knowledge Relating to Area-of-Rectangle Problems  

Microsoft Academic Search

Schematic knowledge was assessed by asking 195 9th- and 10th-grade students to classify area-of-rectangle problems in terms of whether the text of each problem provided insufficient, sufficient, or irrelevant information for solution. Problems involving adjacent sides information were most accurately classified, followed in increasing order of difficulty by problems involving one side and the ratio of sides, one side and

Renae Low; Ray Over

1992-01-01

156

Mechanics of Wire Rope  

Microsoft Academic Search

This presentation on the mechanics of wire rope will be divided into two parts: a theory for the static and dynamic response of wire rope, and practical examples in the form of consulting problems with which I have been associated.

George A. Costello

157

Schematic knowledge changes what judgments of learning predict in a source memory task  

PubMed Central

Source monitoring can be influenced by information external to the study context, such as beliefs and general knowledge (Johnson, Hashtroudi, & Lindsay, 1993). We investigated the extent to which metamnemonic judgments predict memory for items and sources when schematic information about the sources is or is not provided at encoding. Participants made judgments of learning (JOLs) to statements presented by two speakers, and were informed of the occupation of each speaker either before or after the encoding session. Prior knowledge decreased participants’ tendency to erroneously attribute statements to schematically consistent but episodically incorrect speakers, replicating earlier work. The origin of this effect can be understood by examining the relationship between JOLs and performance: In the absence of prior knowledge, JOLs were equally predictive of item and source memory, but were exclusively predictive of source memory when participants knew of the relationship between speakers and statements during study. Background knowledge determines the information that people solicit in service of metamnemonic judgments, suggesting that these judgments reflect control processes during encoding that reduce schematic errors.

Konopka, Agnieszka E.; Benjamin, Aaron S.

2009-01-01

158

Corrosion resistant wire for small diameter wire bonding applications  

Microsoft Academic Search

Wire bonding is now a major method of interconnection. Over the years, as electronic packages became more technologically advanced, the wire bonders and the wire had to mature at the same rate. Aluminum wire is one of the main components used in wire bonding these electronic devices. In some applications, this aluminum wire must be able to withstand harsh environments,

M. McKeown

1997-01-01

159

EMF wire code research  

SciTech Connect

This paper examines the results of previous wire code research to determines the relationship with childhood cancer, wire codes and electromagnetic fields. The paper suggests that, in the original Savitz study, biases toward producing a false positive association between high wire codes and childhood cancer were created by the selection procedure.

Jones, T.

1993-11-01

160

Slide the wire  

NSDL National Science Digital Library

The animation shows a top view of four wires in a conducting loop and a galvanometer. Determine the direction of the magnetic field, Bz(x), passing through the wires at various postions by click-dragging the black wire back and forth and observing the galvanometer reading.

Christian, Wolfgang; Belloni, Mario

2008-02-09

161

Wire-inhomogeneity detector  

Microsoft Academic Search

A device for uncovering imperfections in electrical conducting wire, particularly superconducting wire, by detecting variations in eddy currents. Eddy currents effect the magnetic field in a gap of an inductor, contained in a modified commercial ferrite core, through which the wire being tested is passed. A small increase or decrease in the amount of conductive material, such as copper, in

G. H. Gibson; R. G. Smits; P. H. Eberhard

1982-01-01

162

Impulse-Momentum Diagrams  

ERIC Educational Resources Information Center

|Multiple representations are a valuable tool to help students learn and understand physics concepts. Furthermore, representations help students learn how to think and act like real scientists. These representations include: pictures, free-body diagrams, energy bar charts, electrical circuits, and, more recently, computer simulations and…

Rosengrant, David

2011-01-01

163

Hierarchical Hybrid Block Diagrams  

Microsoft Academic Search

Block diagram languages are now commonly used to design and even implement embedded systems. In the design phase, they are used to model both plant and controller, typically with continuous and discrete modeling respectively. The semantics of these lan- guages are often vague and\\/or complex, which is fine for some users but leaves others puzzled by the behav- iors they

Ben Denckla; Pieter J. Mosterman

164

Knots and Feynman Diagrams  

NASA Astrophysics Data System (ADS)

1. Introduction; 2. Perturbative quantum field theory; 3. The Hopf algebra structure of renormalization; 4. Rationality: no knots, no transcendentals; 5. The simplest link diagrams; 6. Necessary topics from knot theory; 7. Knots to numbers; 8. One-loop words; 9. Euler-Zagier sums; 10. Knots and transcendentals; 11. The 4-term relation; 12. Hopf algebras, non-commutative geometry, and what else?

Kreimer, Dirk

2000-07-01

165

Venn Diagrams and Logic  

NSDL National Science Digital Library

This math lesson from Illuminations uses Venn diagrams to illustrate direct, indirect and transitive reasoning. Students will learn the definitions of direct, indirect and transitive reasoning and give examples of each. Several student activity sheets are included. The material is intended for grades 9-12 and should require 2 and a half class periods to complete.

2011-01-04

166

Acyclic Jacobi Diagrams  

Microsoft Academic Search

We propose a simple new combinatorial model to study spaces of acyclic Jacobi diagrams, in which they are identified with algebras of words modulo operations. This provides a starting point for a word-problem type combinatorial investigation of such spaces, and provides fresh insights on known results.

Daniel Moskovich

2005-01-01

167

Chromatic Number of Diagrams.  

National Technical Information Service (NTIS)

Conditions concerning a partially ordered set (poset (P)) and an orientation for an undirected graph diagram are given. An explicit construction of an order P with given chi(D(P)) is given. This order is the interval order, as N free. This leads to specia...

J. Gustedt S. Felsner M. Morvan J. Rampon

1991-01-01

168

Simultaneity Spacetime Diagram Model  

NSDL National Science Digital Library

The Simultaneity Spacetime Diagram model uses light-trajectories to show the effect of relative motion when observing (recording) events in special relativity. In the default scenario, an explosion (an event) at the center of a right-moving stick occurs at t=0 and the arrival of the explosion light signal at each end is recorded. The arrival event at the left end occurs before the arrival event at the right end because the stick is moving. How do the location and time of these events change if they are observed in a reference frame (the Other Frame) in which the stick is stationary?   The Simultaneity Spacetime Diagram model was written for the study of special relativity the Lorentz transformation using spacetime diagrams and is a supplemental simulation for an article by Sebastien Cromier and Richard Steinberg "The Twin Twin Paradox: Exploring Student Approaches to Understanding Relativistic Concepts" in the The Physics Teacher 48 (9), 598-601 (2010). Initial conditions, such as the locations of the explosion and the detectors, can be adjusted by dragging before the simulation is run. The slider can be used to change the speed of the stick. A third view shows the stick and the wavefront in space. More importantly, a checkbox allows users to compare the predictions of Galilean and special relativity in order to observe how the assumption of a constant speed of light leads to the relativity of simultaneity.   The Simultaneity Spacetime Diagram model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_sr_SimultaneitySpacetimeDiagram.jar file will run the program if Java is installed.

Christian, Wolfgang

2010-10-07

169

The Workup of Penetrometer Diagrams (Snyatie i Obrabotka Plotnomernykh Diagram).  

National Technical Information Service (NTIS)

During studies of operation and testing of agricultural machines and tools, penetrometers are used to plot diagrams for determining the density of the soil. The recorded registrations of the penetrometer diagrams as a function of the depth of cone submerg...

V. I. Buromski

1972-01-01

170

Processing of Ambiguous and Unambiguous Feedback by Depressed and Nondepressed College Students: Schematic Biases and Their Implications for Depressive Realism  

Microsoft Academic Search

Explored schematic processing as a mechanism for predicting (a) when depressed Ss would be negative relative to nondepressed Ss and (b) when depressed and nondepressed Ss would show biased or unbiased (i.e., \\

Benjamin M. Dykman; Lyn Y. Abramson; Lauren B. Alloy; Shirley Hartlage

1989-01-01

171

Proceedings of the Southwestern Psychological Association Symposium on Individual Difference Variables and Schematic Concept Formation: Explorations, April 1972.  

National Technical Information Service (NTIS)

Contents: Difficulties in the assessment of cognitive aptitudes in children of Mexican-American and other bicultural backgrounds; Applications of schematic concept formation to methodological problems and theoretical issues of cognitive development; Indiv...

S. H. Evans A. M. Ellis

1972-01-01

172

Automatic construction of intelligent diagram editors  

Microsoft Academic Search

The intelligent diagram is a recent metaphor for diagramming in which the underlying graphic editor parses the diagram as it is being constructed, performing error correction and collecting geometric constraints which capture the relationships between diagram components. During diagram manipulation a constraint solver uses these geometric constraints to maintain the diagram’s semantics. We describe the Penguins system. This automates the

Sitt Chen Chok; Kim Marriott

1998-01-01

173

Modeling process flow using diagrams  

Microsoft Academic Search

In the practice of process improvement, tools such as the flowchart, the value-stream map (VSM), and a variety of ad hoc variants of such diagrams are commonly used. The purpose of this paper is to present a clear, precise, and consistent framework for the use of such flow diagrams in process improvement projects. The paper finds that traditional diagrams, such

Benjamin Kemper; Jeroen de Mast; Michel Mandjes

2010-01-01

174

Sorting Helps for Voronoi Diagrams  

Microsoft Academic Search

It is well known that, using standard models of computation, ?(n logn) time is required to build a Voronoi diagram forn point sites. This follows from the fact that a Voronoi diagram algorithm can be used to sort. However, if the sites are sorted\\u000a before we start, can the Voronoi diagram be built any faster? We show that for certain

L. Paul Chew; Steven Fortune

1997-01-01

175

Diagram Techniques for Confluence  

Microsoft Academic Search

We,develop,diagram,techniques,for proving,confluence,in abstract reductions,systems. The underlying,theory,gives a systematic,and,uniform framework in which a number of known results, widely scattered throughout the literature, can be understood. These results include Newman’s lemma, Lemma 3.1 of Winkler and Buchberger, the HindleyRosen lemma, the Request lemmas of Staples, the Strong Confluence lemma of Huet, the lemma,of De Bruijn.,, 1998 Academic,Press

Marc Bezem; Jan Willem Klop; Vincent Van Oostrom

1998-01-01

176

Diagram Techniques for Confluence  

Microsoft Academic Search

We develop diagram techniques for proving confluence in abstract reductions systems. The underlying theory gives a systematic and uniform framework in which a number of known results, widely scattered throughout the literature, can be understood. These results include Newman's\\u000aLemma (1942), Lemma 3.1 of Winkler and Buchberger (1985), the\\u000aHindley-Rosen Lemma (1964), the Request Lemmas of Staples (1975),\\u000athe Strong

M. A. Bezem; J. W. Klop; V. van Oostrom

1996-01-01

177

TEP process flow diagram  

SciTech Connect

This presentation describes the development of the proposed Process Flow Diagram (PFD) for the Tokamak Exhaust Processing System (TEP) of ITER. A brief review of design efforts leading up to the PFD is followed by a description of the hydrogen-like, air-like, and waterlike processes. Two new design values are described; the mostcommon and most-demanding design values. The proposed PFD is shown to meet specifications under the most-common and mostdemanding design values.

Wilms, R Scott [Los Alamos National Laboratory; Carlson, Bryan [Los Alamos National Laboratory; Coons, James [Los Alamos National Laboratory; Kubic, William [Los Alamos National Laboratory

2008-01-01

178

Phosphatidylcholine: cholesterol phase diagrams.  

PubMed

Two mono-cis-unsaturated phosphatidylcholine (PC) lipid molecules, having very different gel-liquid crystalline phase transition temperatures as a consequence of the relative positions of the double bond, exhibit PC:cholesterol phase diagrams that are very similar to each other and to that obtained previously for a fully saturated PC:cholesterol mixture (Vist, M. R., and J. H. Davis. 1990. Biochemistry 29:451-464). This leads to the conjecture that PC:cholesterol membrane phase diagrams have a universal form which is relatively independent of the precise chemical structure of the PC molecule. One feature of this phase diagram is the observation over a wide temperature range of a fluid but highly conformationally ordered phase at bilayer concentrations of more than approximately 25 mol% cholesterol. This ;liquid ordered' phase is postulated to be the relevant physical state for many biological membranes, such as the plasma membrane of eukaryotic cells, that contain substantial amounts of cholesterol or equivalent sterols. PMID:19431848

Thewalt, J L; Bloom, M

1992-10-01

179

Thin wire pointing method  

NASA Astrophysics Data System (ADS)

A method is described for forming sharp tips on thin wires, in particular phosphor bronze wires of diameters such as one-thousandth inch used to contact micron size Schottky barrier diodes, which enables close control of tip shape and which avoids the use of highly toxic solutions. The method includes dipping an end of a phosphor bronze wire into a dilute solution of sulfamic acid and applying a current through the wire to electrochemically etch it. The humidity in the room is controlled to a level of less than 50%, and the voltage applied between the wire and another electrode in the solutions is a half wave rectified voltage. The current through the wire is monitored, and the process is stopped when the current falls to a predetermined low level.

Green, G.; Mattauch, R. J.

1983-03-01

180

Zinc wired rebar  

SciTech Connect

A novel method for corrosion protection of rebar in concrete is reported wherein it is galvanically protected by attaching a zinc wire along its length. The self-corrosion and galvanic-corrosion loss of the zinc wire is dependent on the water/cement ratio, the size of the cathode, and the concrete cover thickness. The wire acts as a sacrificial anode when the rebar embedded in concrete is exposed to corrosive environments.

Zhang, X.G.; Hwang, J. [COMINCO Product Technology Centre, Mississauga, Ontario (Canada)

1997-02-01

181

Failure of crane wire rope  

Microsoft Academic Search

A failure analysis of a broken multi strand wire rope from a crane was performed. The fracture of the steel wires in the wire rope showed characteristics of fatigue. On the wire surface were observed decarburised cracks which act as initiation sites for fatigue crack propagation during the application of the wire rope. The main reasons for the failure of

M. Torkar; B. Arzenšek

2002-01-01

182

Lubrication Basics for Wire Ropes  

Microsoft Academic Search

Wire rope forms an important part of many machines and structures. It is comprised of continuous wire strands wound around a central core. There are many kinds of wire rope designed for different applications. Most of them are steel wires made into strands wound with each other. The core can be made of steel, rope or even plastics. Wire ropes

Jeffrey E. Turner; Christopher Barnes

183

1998 wire development workshop proceedings  

SciTech Connect

This report consists of vugraphs of the presentations at the conference. The conference was divided into the following sessions: (1) First Generation Wire Development: Status and Issues; (2) First Generation Wire in Pre-Commercial Prototypes; (3) Second Generation Wire Development: Private Sector Progress and Issues; (4) Second Generation Wire Development: Federal Laboratories; and (5) Fundamental Research Issues for HTS Wire Development.

NONE

1998-04-01

184

How Much Information Do You Need? Schematic Maps in Wayfinding and Self Localisation  

NASA Astrophysics Data System (ADS)

The paper is concerned with the empirical investigation of different types of schematised maps. In two experiments a standard floor plan was compared to three strongly schematised maps providing only route knowledge. With the help of one of the maps, the participants had to localise themselves in two tasks and performed two wayfinding tasks in a multi-level building they didn't know before. We recorded map usage time and a range of task performance measures. Although the map provided much less information, participants performed better in wayfinding with an unambiguous schematic map than with a floor plan. In the self localisation tasks, participants performed equally well with the detailed floor plan and with the schematised map versions. Like the users of a schematic map, users of a floor map presumably oriented on the network structure rather than on local geometric features. This allows them to limit the otherwise potentially very large search space in map-based self localisation. In both types of tasks participants looked at the schematised maps for a shorter time. Providing less than standard information like in a highly schematised map can lead to better performance. We conclude that providing unambiguous turning information (route knowledge) rather than survey knowledge is most crucial for wayfinding in unknown environments.

Meilinger, Tobias; Hölscher, Christoph; Büchner, Simon J.; Brösamle, Martin

185

Army Wire Rope Inspection Program.  

National Technical Information Service (NTIS)

This report covers an investigation into the Army's wire rope nondestructive inspection procedures and needs. Major Army users of wire rope were located and surveyed for information on their wire rope inspection procedures. The Navy has conducted an inves...

K. S. Chapman

1983-01-01

186

Argument Diagramming: The Araucaria Project  

NASA Astrophysics Data System (ADS)

Formal arguments, such as those used in science, medicine and law to establish a conclusion by providing supporting evidence, are frequently represented by diagrams such as trees and graphs. We describe the software package Araucaria which allows textual arguments to be marked up and represented as standard, Toulmin or Wigmore diagrams. Since each of these diagramming techniques was devised for a particular domain or argumentation, we discuss some of the issues involved in translating between diagrams. The exercise of translating between different diagramming types illustrates that any one diagramming system often cannot capture all of the nuances inherent in an argument. Finally, we describe some areas, such as critical thinking courses in colleges and universities and the analysis of evidence in court cases, where Araucaria has been put to practical use.

Rowe, Glenn; Reed, Chris

187

International space station wire program  

NASA Astrophysics Data System (ADS)

Hardware provider wire systems and current wire insulation issues for the International Space Station (ISS) program are discussed in this viewgraph presentation. Wire insulation issues include silicone wire contamination, Tefzel cold temperature flexibility, and Russian polyimide wire insulation. ISS is a complex program with hardware developed and managed by many countries and hundreds of contractors. Most of the obvious wire insulation issues are known by contractors and have been precluded by proper selection.

May, Todd

1995-11-01

188

Graphical process diagrams ion—views and diagrams  

Microsoft Academic Search

Process design (and description) is largely an ad hoc discipline composed of several diagramming techniques with no clear definition of the process characteristics described by any one, usually with no definition of the relationship between the diagrams, and in most cases with no definition of the process design stages. This is in sharp contrast with product description and design, where

KOSTIA MANDEL

1990-01-01

189

Subthalamic nucleus location: relationships between stereotactic AC-PC-based diagrams and MRI anatomy-based contours.  

PubMed

Subthalamic nucleus (STN) targeting is classically performed based on AC-PC probabilistic position. Nevertheless, MRI allows direct visualization and targeting. We aimed to compare the position localized on MR images with standard stereotactic diagrams. The STN was manually contoured on MR images (22 Parkinson's disease patients); boundaries were simplified in a schematic polygonal form. Front and lateral stereotactic diagrams were constructed according to Talairach and Benabid. We compared x, y and z coordinates of the geometrical center of MRI-based polygons and stereotactic diagrams (Wilcoxon matched-pairs tests). There was significant discordance between MRI-based polygons and AC-PC-based images. MRI shows the STN as more posterior, medial and slightly inferior. PMID:19752592

Caire, François; Ouchchane, Lemlih; Coste, Jérôme; Gabrillargues, Jean; Derost, Philippe; Ulla, Miguel; Durif, Franck; Lemaire, Jean-Jacques

2009-09-10

190

30 CFR 77.1802 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...  

Code of Federal Regulations, 2010 CFR

30 Mineral Resources 1 2009-07-01 2009-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 77.1802 Section 77.1802...

2009-07-01

191

30 CFR 75.1003 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...  

Code of Federal Regulations, 2010 CFR

30 Mineral Resources 1 2009-07-01 2009-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 75.1003 Section 75.1003...

2009-07-01

192

30 CFR 77.1802 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...  

Code of Federal Regulations, 2010 CFR

30 Mineral Resources 1 2010-07-01 2010-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 77.1802 Section 77.1802...

2010-07-01

193

30 CFR 75.1003 - Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley...  

Code of Federal Regulations, 2010 CFR

30 Mineral Resources 1 2010-07-01 2010-07-01 false Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. 75.1003 Section 75.1003...

2010-07-01

194

Insertion demonstrations of digital gallium arsenide. OBP-80 report. Volume 1: Chip set schematics  

NASA Astrophysics Data System (ADS)

The OBP-80 is an Engineering Development Model (EDM) of a bit slice computer constructed by Martin Marietta Space Systems for the Naval Research Laboratory. The contract was performed in cooperation with the Defense Advanced Research Projects Agency technology insertion program for digital gallium arsenide. This system has been developed to demonstrate, in a laboratory environment, an architecture that can be used to perform advanced signal processing functions onboard a spacecraft. Primary emphasis is placed on the transfer of an existing CMOS architecture to a higher performance, more radiation tolerant technology of Gallium Arsenide. This volume provides the schematic data which was used to generate the physical design of all seven VLSI components used in the OBP-80 EDM. It also presents top level graphical representations of the seven components.

195

Schematic for efficient computation of GC, GC3, and AT3 bias spectra of genome.  

PubMed

Selection of synonymous codons for an amino acid is biased in protein translation process. This biased selection causes repetition of synonymous codons in structural parts of genome that stands for high N/3 peaks in DNA spectrum. Period-3 spectral property is utilized here to produce a 3-phase network model based on polyphase filterbank concepts for derivation of codon bias spectra (CBS). Modification of parameters in this model can produce GC, GC3, and AT3 bias spectra. Complete schematic in LabVIEW platform is presented here for efficient and parallel computation of GC, GC3, and AT3 bias spectra of genomes alongwith results of CBS patterns. We have performed the correlation coefficient analysis of GC, GC3, and AT3 bias spectra with codon bias patterns of CBS for biological and statistical significance of this model. PMID:22368390

Rizvi, Ahsan Z; Venu Gopal, T; Bhattacharya, C

2012-02-03

196

Schematic way to find solution of the outcoupled matter wave with a source term  

NASA Astrophysics Data System (ADS)

We propose a schematic way to obtain solution of the outcoupled atom laser beam wave function in the presence of a source term where the beam is influenced by gravity. In this case, we only focus on the external potentials inside the region of Bose-Einstein condensate that are generated by electromagnetic source and gravity. Since the evolution of the atom laser beam can be portrayed through the ordinary Schrödinger equation with a source, we are allowed to express the general solution as the superposition of the homogeneous solution and particular solution. With the given external potentials and ansatz solutions, we attain that the obtained energy depends on the parameter constituting to the ratio between the longitudinal frequency and transverse frequency.

Prayitno, T. B.

2013-09-01

197

Open-Source Semantic and Schematic Mediation in Hydrogeologic Spatial Data Infrastructures  

NASA Astrophysics Data System (ADS)

A common task in cyber-based data environments, hydrogeologic or otherwise, is an initial search for data amongst distributed heterogeneous sources, followed by amalgamation of the multiple results into a single file organized using a common structure and perhaps standard content. For example, querying water well databases to obtain a list of the rock materials that occur beyond a certain ground depth, represented in some specific XML dialect. This task is often achieved with the aid of open geospatial technologies (OGC), which conveniently enable interoperability at the system and syntax levels by providing standard web service interfaces (WMS, WFS, WCS) and a standard data transfer language (GML). However, at present such technologies, which are mainly non-open source, provide minimal support for interoperating at the schematic and semantic levels, meaning it is difficult to query the data sources and obtain results in a common data structure populated with standard content. Classical data integration systems provide mediator and wrapper middleware to address this issue: mediators dispatch queries to distributed data repositories and integrate query results, while wrappers perform translation to common standards for both queries and results, and these actions are typically supported by ontologies. Under this classical scenario existing open geospatial services can be considered wrappers with minimal translation capacity, thus requiring a mediator to both integrate and translate. Consequently, we have used open source components to develop a re-usable mediator that operates as a virtual open geospatial web service (WFS), one that integrates and translates both query requests and results from OGC-wrapped data sources to common standards. The mediator is designed as a customizable XML processing pipeline that operates on declarative descriptions that support schematic and semantic translation. It is being implemented in virtual environments for hydrogeology to enhance knowledge of Canada's watersheds, as well as in environments aimed at the delivery of geologic information. Discussed will be the role and design of the mediator and its implementation in a distributed groundwater information context.

Boisvert, E.; Brodaric, B.

2008-12-01

198

Distribution of wire deformation within strands of wire ropes  

Microsoft Academic Search

Using ANSYS software, we developed a modeling program for several kinds of wire ropes with metal cores and built a geometric model for the 6×19 IWS wire rope. Through proper grid partitioning, a finite element model for calculating the deformation of wire rope was obtained. Completely constraining one end of the wire rope and applying an axial force to the

Jun MA; Shi-rong GE; De-kun ZHANG

2008-01-01

199

Potential-pH Diagrams.  

ERIC Educational Resources Information Center

|Potential-pH diagrams show the domains of redoxpotential and pH in which major species are most stable. Constructing such diagrams provides students with opportunities to decide what species must be considered, search literature for equilibrium constants and free energies of formation, and practice in using the Nernst equation. (Author/JN)|

Barnum, Dennis W.

1982-01-01

200

Constructing Precise Object Relation Diagrams  

Microsoft Academic Search

The Object Relation Diagram (ORD) of a program is a class interdependence diagram which has applications in a wide variety of software engineering problems (e.g., in- tegration testing, integration coverage analysis, regression testing, impact analysis, program understanding, and re- verse engineering). Because the imprecision of the ORD directly affects the practicality of its usage, it is important to investigate techniques

Ana Milanova; Atanas Rountev; Barbara G. Ryder

2002-01-01

201

CLIMATE DIAGRAM - MILES CITY, MT  

Technology Transfer Automated Retrieval System (TEKTRAN)

Research conducted across the Great Plains has shown precipitation and temperature are the main factors affecting plant growth and development. A climate diagram was constructed with long-term (96-year) climate records from Miles City, Montana. The diagram describes the climate of the area. Maximum ...

202

VORONOI DIAGRAMS AND ORNAMENTAL DESIGN  

Microsoft Academic Search

A set of points in the plane induces a Voronoi diagram, a division of the plane based on proximity to points in the set. Voronoi diagrams have been used extensively in engineering and scientific disciplines, but the possibility of using them for creating abstract ornamental designs is largely unexplored. I present some techniques for creating attractive ornamental designs using Voronoi

Craig S. Kaplan

1999-01-01

203

Time-Based Voronoi Diagram  

Microsoft Academic Search

We consider a variation of Voronoi diagram, or time-based Voronoi diagram, for a set S of points in the presence of transportation lines or highways in the plane. A shortest time-distance path from a query point to any given point in S is a path that takes the least travelling time. The travelling speeds and hence travelling times of the

D. T. Lee; Chung-Shou Liao; Wei-Bung Wang

204

Spider Diagrams: A Diagrammatic Reasoning System  

Microsoft Academic Search

Spider diagrams combine and extend Venn diagrams and Euler circles to express constraints on sets and their relationships with other sets. These diagrams can be used in conjunction with object-oriented modelling notations such as the Unified Modelling Language. This paper summarises the main syntax and semantics of spider diagrams. It also introduces inference rules for reasoning with spider diagrams and

John Howse; Fernando Molina; John Taylor; Stuart Kent; JOSEPH YOSSI GIL

2001-01-01

205

Integrating UML diagrams for production control systems  

Microsoft Academic Search

This paper proposes to use SDL block diagrams, UML class diagrams, and UML behavior diagrams like collaboration diagrams, activity diagrams, and statecharts as a visual programming language. We describe a modeling approach for flexible, autonomous production agents, which are used for the decentralization of production control systems. In order to generate a (Java) implementation of a production control system from

Hans J. Köhler; Ulrich Nickel; Jörg Niere; Albert Zündorf

2000-01-01

206

Wire Rope Slings.  

National Technical Information Service (NTIS)

Safe working load tables, in metric units, were prepared for the Divisional Accident Prevention Advisory Committee. At the same time an investigation was made into the possibility of preparing a Divisional Standard for wire rope slings. It is recommended ...

P. J. Bramhill

1972-01-01

207

The Sagging Wire.  

ERIC Educational Resources Information Center

Described is an activity which can be used to investigate heat expansion in a solid. Included are background, materials, procedures, and suggested discussion questions. A diagram of the apparatus is provided. (CW)

Thompson, John Taylor

1989-01-01

208

Superconducting wire fabrication  

Microsoft Academic Search

Experiments were done leading to the fabrication of high-temperature superconducting composite wire. Bulk superconductor was characterized by using optical microscopy, scanning electron microscopy, and energy-dispersive x ray spectroscopy. The chemical compatibility of superconducting materials with a number of metal sheathing candidates was tested, with silver offering the best compatibility. Wire was fabricated by drawing 0.250-inch-diameter silver tubing packed with superconducting

W. E. Glad; G. G. Chase

1990-01-01

209

Comparative Study of the Effectiveness of Three Learning Environments: Hyper-Realistic Virtual Simulations, Traditional Schematic Simulations and Traditional Laboratory  

ERIC Educational Resources Information Center

|This study compared the educational effects of computer simulations developed in a hyper-realistic virtual environment with the educational effects of either traditional schematic simulations or a traditional optics laboratory. The virtual environment was constructed on the basis of Java applets complemented with a photorealistic visual output.…

Martinez, Guadalupe; Naranjo, Francisco L.; Perez, Angel L.; Suero, Maria Isabel; Pardo, Pedro J.

2011-01-01

210

Influences of Source-Item Contingency and Schematic Knowledge on Source Monitoring: Tests of the Probability-Matching Account  

ERIC Educational Resources Information Center

|The authors investigated conditions under which judgments in source-monitoring tasks are influenced by prior schematic knowledge. According to a probability-matching account of source guessing (Spaniol & Bayen, 2002), when people do not remember the source of information, they match source-guessing probabilities to the perceived contingency…

Bayen, Ute J.; Kuhlmann, Beatrice G.

2011-01-01

211

Comparative study of the effectiveness of three learning environments: Hyper-realistic virtual simulations, traditional schematic simulations and traditional laboratory  

NSDL National Science Digital Library

This study compared the educational effects of computer simulations developed in a hyper-realistic virtual environment with the educational effects of either traditional schematic simulations or a traditional optics laboratory. The virtual environment was constructed on the basis of Java applets complemented with a photorealistic visual output. This new virtual environment concept, which we call hyper-realistic, transcends basic schematic simulation; it provides the user with a more realistic perception of a physical phenomenon being simulated. We compared the learning achievements of three equivalent, homogeneous groups of undergraduatesâan experimental group who used only the hyper-realistic virtual laboratory, a first control group who used a schematic simulation, and a second control group who used the traditional laboratory. The three groups received the same theoretical preparation and carried out equivalent practicals in their respective learning environments. The topic chosen for the experiment was optical aberrations. An analysis of variance applied to the data of the study demonstrated a statistically significant difference (p value <0.05) between the three groups. The learning achievements attained by the group using the hyper-realistic virtual environment were 6.1 percentage points higher than those for the group using the traditional schematic simulations and 9.5 percentage points higher than those for the group using the traditional laboratory.

Martã­nez, Guadalupe; Naranjo, Francisco L.; Pã©rez, Ãngel L.; Suero, Maria I.; Pardo, Pedro J.

2012-06-06

212

Influences of Source-Item Contingency and Schematic Knowledge on Source Monitoring: Tests of the Probability-Matching Account  

ERIC Educational Resources Information Center

The authors investigated conditions under which judgments in source-monitoring tasks are influenced by prior schematic knowledge. According to a probability-matching account of source guessing (Spaniol & Bayen, 2002), when people do not remember the source of information, they match source-guessing probabilities to the perceived contingency…

Bayen, Ute J.; Kuhlmann, Beatrice G.

2011-01-01

213

Comparative study of the effectiveness of three learning environments: Hyper-realistic virtual simulations, traditional schematic simulations and traditional laboratory  

NASA Astrophysics Data System (ADS)

This study compared the educational effects of computer simulations developed in a hyper-realistic virtual environment with the educational effects of either traditional schematic simulations or a traditional optics laboratory. The virtual environment was constructed on the basis of Java applets complemented with a photorealistic visual output. This new virtual environment concept, which we call hyper-realistic, transcends basic schematic simulation; it provides the user with a more realistic perception of a physical phenomenon being simulated. We compared the learning achievements of three equivalent, homogeneous groups of undergraduates—an experimental group who used only the hyper-realistic virtual laboratory, a first control group who used a schematic simulation, and a second control group who used the traditional laboratory. The three groups received the same theoretical preparation and carried out equivalent practicals in their respective learning environments. The topic chosen for the experiment was optical aberrations. An analysis of variance applied to the data of the study demonstrated a statistically significant difference (p value <0.05) between the three groups. The learning achievements attained by the group using the hyper-realistic virtual environment were 6.1 percentage points higher than those for the group using the traditional schematic simulations and 9.5 percentage points higher than those for the group using the traditional laboratory.

Martínez, Guadalupe; Naranjo, Francisco L.; Pérez, Ángel L.; Suero, Maria Isabel; Pardo, Pedro J.

2011-12-01

214

Semiclassical quantization of the extended time-dependent Hartree-Fock equation: Schematic two-level model  

SciTech Connect

A semiclassical method of evaluating the path integral over collective (Bose) and independent-particle (Fermi) fields is represented. As an illustration, the schematic two-level model is adopted. The semiclassical calculations of the energy spectra is performed and the result obtained is compared with the exact one.

Kaneko, K.

1985-03-01

215

Wigner crystal physics in quantum wires.  

SciTech Connect

The physics of interacting quantum wires has attracted a lot of attention recently. When the density of electrons in the wire is very low, the strong repulsion between electrons leads to the formation of a Wigner crystal. We review the rich spin and orbital properties of the Wigner crystal, in both the one-dimensional and the quasi-one-dimensional regimes. In the one-dimensional Wigner crystal the electron spins form an antiferromagnetic Heisenberg chain with exponentially small exchange coupling. In the presence of leads, the resulting inhomogeneity of the electron density causes a violation of spin-charge separation. As a consequence the spin degrees of freedom affect the conductance of the wire. Upon increasing the electron density, the Wigner crystal starts deviating from the strictly one-dimensional geometry, forming a zigzag structure instead. Spin interactions in this regime are dominated by ring exchanges, and the phase diagram of the resulting zigzag spin chain has a number of unpolarized phases as well as regions of complete and partial spin polarization. Finally we address the orbital properties in the vicinity of the transition from a one-dimensional to a quasi-one-dimensional state. Due to the locking between chains in the zigzag Wigner crystal, only one gapless mode exists. Manifestations of Wigner crystal physics at weak interactions are explored by studying the fate of the additional gapped low-energy mode as a function of interaction strength.

Meyer, J. S.; Matveev, K. A.; Materials Science Division; Ohio State Univ.

2009-01-14

216

Application of the flammability diagram for evaluation of fire and explosion hazards of flammable vapors  

SciTech Connect

The safest method to prevent fires and explosions of flammable vapors is to prevent the existence of flammable mixtures in the first place. This method requires detailed knowledge of the flammability region as a function of the fuel, oxygen, and nitrogen concentrations. A triangular flammability diagram is the most useful tool to display the flammability region, and to determine if a flammable mixture is present during plant operations. This paper describes how to draw and use a flammability diagram. A procedure to estimate the flammability region using the available and sometimes limited data is discussed. The paper also shows how to use the flammability diagram with plant operations involving inerting and purging, and from bringing vessels into and out of service. A compilation of flammability diagrams for 30 materials, based on previously published data is provided. An automated apparatus for acquiring data for a flammability diagram is described. The apparatus consists of a 20-L sphere with an automated gas mixing system, a fuse-wire ignition system, and a high speed pressure measurement and data acquisition system. Data derived from the apparatus includes flammability limits, maximum pressure during combustion, and the maximum pressure rate. The effect of fuse-wire ignitor dynamics on the results is studied. A flammability diagram for methane drawn from data obtained from the apparatus, is presented.

Mashuga, C.V.; Crowl, D.A. [Michigan Technological Univ., Houghton, MI (United States). Dept. of Chemical Engineering

1998-12-01

217

Particles, Feynman Diagrams and All That  

ERIC Educational Resources Information Center

|Quantum fields are introduced in order to give students an accurate qualitative understanding of the origin of Feynman diagrams as representations of particle interactions. Elementary diagrams are combined to produce diagrams representing the main features of the Standard Model.|

Daniel, Michael

2006-01-01

218

Schematic diagram and calculation of the magnetic analyzer of electrons for investigations in relativistic atomic physics with internal targets of the Nuclotron  

Microsoft Academic Search

A specialized magnetic analyzer providing a possibility of experimental research in the field of relativistic atomic physics by means of registration of electrons from the internal target of the Nuclotron is proposed and calculated. At the selection of delta electrons, it provides a possibility of on-line (in each accelerator cycle) monitoring of the absolute intensity of the interaction of nuclei

A. S. Artemov; S. V. Afanas'ev; V. S. Alfeev; V. V. Borisov; V. N. Karpinskii; E. A. Matyushevskii; N. I. Tarantin

2007-01-01

219

Schematic diagram and calculation of the magnetic analyzer of electrons for investigations in relativistic atomic physics with internal targets of the Nuclotron  

Microsoft Academic Search

A specialized magnetic analyzer providing a possibility of experimental research in the field of relativistic atomic physics\\u000a by means of registration of electrons from the internal target of the Nuclotron is proposed and calculated. At the selection\\u000a of ? electrons, it provides a possibility of on-line (in each accelerator cycle) monitoring of the absolute intensity of the\\u000a interaction of nuclei

A. S. Artemov; S. V. Afanas’ev; V. S. Alfeev; V. V. Borisov; V. N. Karpinskii; E. A. Matyushevskii; N. I. Tarantin

2007-01-01

220

Photonic wires and trumpets for ultrabright single photon sources  

NASA Astrophysics Data System (ADS)

Photonic wires have recently demonstrated very attractive assets in the field of high-efficiency single photon sources. After presenting the basics of spontaneous emission control in photonic wires, we compare the two possible tapering strategies that can be applied to their output end so as to tailor their radiation diagram in the far-field. We highlight the novel "photonic trumpet" geometry, which provides a clean Gaussian beam, and is much less sensitive to fabrication imperfections than the more common needle-like taper geometry. S4Ps based on a single QD in a PW with integrated bottom mirror and tapered tip display jointly a record-high efficiency (0.75+/-0.1 photon per pulse) and excellent single photon purity. Beyond single photon sources, photonic wires and trumpets appear as a very attractive resource for solid-state quantum optics experiments.

Gérard, Jean-Michel; Claudon, Julien; Bleuse, Joël.; Munsch, Matthieu; Malik, Nitin S.; Gregersen, Niels; Mørk, Jesper

2013-03-01

221

Atemporal diagrams for quantum circuits  

SciTech Connect

A system of diagrams is introduced that allows the representation of various elements of a quantum circuit, including measurements, in a form which makes no reference to time (hence 'atemporal'). It can be used to relate quantum dynamical properties to those of entangled states (map-state duality), and suggests useful analogies, such as the inverse of an entangled ket. Diagrams clarify the role of channel kets, transition operators, dynamical operators (matrices), and Kraus rank for noisy quantum channels. Positive (semidefinite) operators are represented by diagrams with a symmetry that aids in understanding their connection with completely positive maps. The diagrams are used to analyze standard teleportation and dense coding, and for a careful study of unambiguous (conclusive) teleportation. A simple diagrammatic argument shows that a Kraus rank of 3 is impossible for a one-qubit channel modeled using a one-qubit environment in a mixed state.

Griffiths, Robert B.; Wu Shengjun; Yu Li; Cohen, Scott M. [Physics Department, Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213 (United States); Physics Department, Duquesne University, Pittsburgh, Pennsylvania 15282 (United States)

2006-05-15

222

Phase diagrams of magnetic nanotubes  

NASA Astrophysics Data System (ADS)

Analytical expressions for the total magnetic energy of two characteristic internal configurations of nanometric tubes are calculated. A magnetic phase diagram with respect to the aspect ratio of the tubes is obtained which allows a discussion about the possibility of getting ensembles of nanotubes with low coercive fields. A comparison with recently reported coercive fields of three different cobalt nanotube arrays agrees well with the phase diagram derived here.

Escrig, J.; Landeros, P.; Altbir, D.; Vogel, E. E.; Vargas, P.

2007-01-01

223

Introduction to Ternary Phase Diagrams  

NSDL National Science Digital Library

This exercise is intended as a group exercise to help students learn the fundamentals of using ternary phase diagrams. It is a much better way for students to learn about the diagrams than to lecture to them. Good students will be able to walk through this with little assistance from the instructor.Weaker students will struggle and need help from peers or instructors. The entire exercise takes 1-2 hours for most.

Perkins, Dexter

224

Diagram Designer 1.23  

NSDL National Science Digital Library

Turning out flowcharts and diagrams for presentations can be quite a hassle, so it's nice to lean about the Diagram Designer application. With the program's interface, visitors can take advantage of the customizable object palette, slide show viewer, and the ability to plot mathematical expressions. This version also allows users to import various image file formats, such as jpeg and gif files. This version is compatible with computers running Windows 98 and newer.

Vinther, Michael

225

Drawing Euler Diagrams with Circles  

Microsoft Academic Search

\\u000a Euler diagrams are a popular and intuitive visualization tool which are used in a wide variety of application areas, including\\u000a biological and medical data analysis. As with other data visualization methods, such as graphs, bar charts, or pie charts,\\u000a the automated generation of an Euler diagram from a suitable data set would be advantageous, removing the burden of manual\\u000a data

Gem Stapleton; Leishi Zhang; John Howse; Peter Rodgers

2010-01-01

226

[A comparison of two models of gender-related schematic processing].  

PubMed

An experiment was conducted to compare two models of gender-related schematic processing: Bem's gender schema theory (1981) and self-schema theory by Markus, Crane, Bernstein, and Saladi (1982). While the former argues for a construct that is unidimensional, the latter proposes separate masculine and feminine schemata. Two hundred and thirty-six college students (111 males and 125 females) completed Bem Sex Role Inventory, and then estimated subjective percentages of males and females who had each trait of BSRI. The subjective percentages were used to compute sex-typing scores. After the questionnaires, the subjects attempted free recall of the inventory items, and clustering scores were computed from the results. Data analyses, including those of covariance structure, yielded the following results: 1) The fit of the gender schema model was better than the self-schema model. 2) A strong gender schema was related to a high-congruent self-concept score, a low sex-incongruent self-concept score, a high sex-congruent sex-typing score, a high sex-incongruent sex-typing score, and a high sex-congruent clustering score. As a whole, the results could be summarized to support the gender schema theory. PMID:8022130

Dohi, I

1994-04-01

227

Schematic designs for penetration seals for a reference repository in bedded salt  

SciTech Connect

The isolation of radioactive wastes in geologic repositories requires that man-made penetrations such as shafts, tunnels, or boreholes are adequately sealed. This report describes schematic seal designs for a repository in bedded salt referenced to the straitigraphy of southeastern New Mexico. The designs are presented for extensive peer review and will be updated as site-specific conceptual designs when a site for a repository in salt has been selected. The principal material used in the seal system is crushed salt obtained from excavating the repository. It is anticipated that crushed salt will consolidate as the repository rooms creep close to the degree that mechanical and hydrologic properties will eventually match those of undisturbed, intact salt. For southeastern New Mexico salt, analyses indicate that this process will require approximately 1000 years for a seal located at the base of one of the repository shafts (where there is little increase in temperature due to waste emplacement) and approximately 400 years for a seal located in an access tunnel within the repository. Bulkheads composed of contrete or salt bricks are also included in the seal system as components which will have low permeability during the period required for salt consolidation.

Kelsall, P.C.; Case, J.B.; Meyer, D.; Coons, W.E.

1982-11-01

228

The face is more than its parts - Brain dynamics of enhanced spatial attention to schematic threat  

PubMed Central

A rapid response to environmental threat is crucial for survival and requires an appropriate attention allocation toward its location. Visual search paradigms have provided evidence for the enhanced capture of attention by threatening faces. In two EEG experiments, we sought to determine whether the detection of threat requires complete faces or salient features underlying the facial expression. Measuring the N2pc component as an electrophysiological indicator of attentional selection we investigated participants searching for either a complete discrepant schematic threatening or friendly face within an array of neutral faces, or single features (eyebrows and eyes vs. eyebrows) of threatening and friendly faces. Threatening faces were detected faster compared to friendly faces. In accordance, threatening angry targets showed a more pronounced occipital N2pc between 200 and 300 ms than friendly facial targets. Moreover, threatening configurations, were detected more rapidly than friendly-related features when the facial configuration contained eyebrows and eyes. No differences were observed when only a single feature (eyebrows) had to be detected. Threatening-related and friendly-related features did not show any differences in the N2pc across all configuration conditions. Taken together, the findings provide direct electrophysiological support for rapid prioritized attention to facial threat, an advantage that seems not be driven by low level visual features.

Weymar, Mathias; Low, Andreas; Ohman, Arne; Hamm, Alfons O.

2012-01-01

229

Wire brush fastening device  

DOEpatents

A fastening device is provided which is a variation on the conventional nut and bolt. The bolt has a longitudinal axis and threading helically affixed thereon along the longitudinal axis. A nut having a bore extending therethrough is provided. The bore of the nut has a greater diameter than the diameter of the bolt so the bolt can extend through the bore. An array of wire bristles are affixed within the bore so as to form a brush. The wire bristles extend inwardly from the bore and are constructed and arranged of the correct size, length and stiffness to guide the bolt within the bore and to restrain the bolt within the bore as required. A variety of applications of the wire brush nut are disclosed, including a bolt capture device and a test rig apparatus.

Meigs, R.A.

1993-08-31

230

Flying wires at Fermilab  

SciTech Connect

Transverse beam profile measurement systems called ''Flying Wires'' have been installed and made operational in the Fermilab Main Ring and Tevatron accelerators. These devices are used routinely to measure the emittance of both protons and antiprotons throughout the fill process, and for emittance growth measurements during stores. In the Tevatron, the individual transverse profiles of six proton and six antiproton bunches are obtained simultaneously, with a single pass of the wire through the beam. Essential features of the hardware, software, and system operation are explained in the rest of the paper. 3 refs., 4 figs.

Gannon, J.; Crawford, C.; Finley, D.; Flora, R.; Groves, T.; MacPherson, M.

1989-03-01

231

Wiring and Cabling  

NSDL National Science Digital Library

Created by Work-Ready Electronics, a project of the Advanced Technological Education program, this module introduces students to wiring and cabling principles, including transmission lines, computer network and wireless systems, and troubleshooting. The Knowledge Probes allow students to answer open-ended questions covering the content of the module, and the Learning Resources present activities, laboratories, and games to further solidify the material. The Notebook function allows visitors to take notes and review them at any time. This is an excellent resource for vocational electronics educators as a ready-made classroom introduction to wiring and cabling.

2008-12-08

232

Problems in causal loop diagrams revisited  

Microsoft Academic Search

A reemerging problem Word-and-arrow diagrams (causal-loop diagrams, influence diagrams, cognitive maps, and the like) are enjoying widespread use in the system dynamics and systems thinking communities. It is increasingly common to see these diagrams with links labeled \\

George P. Richardson

1997-01-01

233

Characteristics of Group Development of Diagrams  

Microsoft Academic Search

One contributing factor to the lack of widespread usage of software for collaborative development of diagrams is the high degree of variability in the requirements for such software. The requirements are categorized in terms of diagram characteristics and diagram creation strategies. Various measures are proposed to characterize a potential collaborative diagramming need and to compare it to potential software systems.

Jeffrey D. Campbell

2002-01-01

234

A World without Wires  

ERIC Educational Resources Information Center

The wireless bandwagon is rolling across Mississippi, picking up a fresh load of converts and turning calamity into opportunity. Traditional wired school networks, many of which unraveled during Hurricane Katrina, are giving way to advanced wireless mesh networks that frequently include voice-over-IP (VoIP) capabilities. Vendor funding is helping…

Panettieri, Joseph C.

2006-01-01

235

WiredSafety  

NSDL National Science Digital Library

The Internet has afforded hundreds of millions of people the opportunity to access thousands of sites on almost every topic imaginable, and has created a myriad of new employment opportunities, interest groups, and cybercommunities. Regrettably, not every person merging onto the information superhighway is there for such laudable reasons. Stepping into the fray of n'er-do wells is the WiredSafety website, headed by Perry Aftab, an international cyberspace privacy and security lawyer and children's advocate. Registered as a non-profit organization, WiredSafety offers help for online victims of cybercrime and harassment, educational materials about cybercrime, and assistance for law enforcement worldwide on preventing and investigating cybercrimes. A good place to start on the site is Parry's Internet Safety Guide for Parents, which offers a number of helpful tips for parents about monitoring their children's interactions with others over the Internet. WiredSafety also offers Wired-Ed, which is offered free of charge and allows users to learn more about surfing the net safely. Also featured is a wide range of other online courses.

236

NewsWire, 2002.  

ERIC Educational Resources Information Center

|This document presents the 3 2002 issues of the newsletter "NewsWire," (volume 5). Issue Number One focuses on collaborative Web projects. This issue begins with descriptions of four individual projects: "iEARN"; "Operation RubyThroat"; "Follow the Polar Huskies!"; and "Log in Your Animal Roadkill!" Features that follow include: "Bringing the…

Byrom, Elizabeth, Ed.; Bingham, Margaret, Ed.; Bowman, Gloria, Ed.; Shoemaker, Dan, Ed.

2002-01-01

237

Basic Wiring. Second Edition.  

ERIC Educational Resources Information Center

|This guide is designed to assist teachers conducting a foundation course to prepare students for additional courses of training for entry-level employment in either the residential or commercial and industrial wiring trades. Included in the guide are 17 instructional units and the following sections of information for teachers: guidelines in…

Kaltwasser, Stan; And Others

238

Debate: Wired versus Wireless.  

ERIC Educational Resources Information Center

|Debates the issue of investing in wiring schools for desktop computer networks versus using laptops and wireless networks. Included are cost considerations and the value of technology for learning. Suggestions include using wireless networks for existing schools, hardwiring computers for new construction, and not using computers for elementary…

Meeks, Glenn; Nair, Prakash

2000-01-01

239

Vibrating Wire Viscometer.  

National Technical Information Service (NTIS)

The damping of transverse vibrations of a wire in a viscous fluid is the basis for a viscometer of high precision and versatility. A solution to the hydrodynamic problem is indicated, and shown to be valid for a wide range of physical parameters. The devi...

J. T. Tough W. D. McCormick J. G. Dash

1964-01-01

240

A World without Wires  

ERIC Educational Resources Information Center

|The wireless bandwagon is rolling across Mississippi, picking up a fresh load of converts and turning calamity into opportunity. Traditional wired school networks, many of which unraveled during Hurricane Katrina, are giving way to advanced wireless mesh networks that frequently include voice-over-IP (VoIP) capabilities. Vendor funding is helping…

Panettieri, Joseph C.

2006-01-01

241

Wires by Patchy Particles  

NSDL National Science Digital Library

Simulation Software: Glotzer Group Code Simulation Method: Brownian Dynamics A system of 80 spherical particles with two patches at a concentration of 0.20, was run starting at an effectively infinite temperature then instantaneously quenched to a temperature of 0.5. The final equillibrium structure is wires or chains. Simulation Model: United Atom Rigid Body with Lennard-Jones

Zhang, Zhenli

2005-01-31

242

Residential Wiring. Second Edition.  

ERIC Educational Resources Information Center

|This guide is designed to assist teachers conducting a course to prepare students for entry-level employment in the residential wiring trade. Included in the guide are six instructional units and the following sections of information for teachers: guidelines in using the unit components; academic and workplace skills classifications and…

Taylor, Mark; And Others

243

Plated Wire Memory Subsystem.  

National Technical Information Service (NTIS)

The design, construction, and test history of a 4096 word by 18 bit random access NDRO Plated Wire Memory for use in conjunction with a spacecraft input/output and central processing unit is reported. A technical and functional description is given along ...

K. H. Carpenter

1974-01-01

244

An exploration of the two-factor schematization of relation meaning and emotions among professional rugby union players  

Microsoft Academic Search

The aim of this paper was to explore Lazarus's two-factor schematization of losses and gains and the emotions generated in response to loss (threat and harm) and gain (challenge and benefit) relational meanings. Participants were 10 professional rugby union players aged between 24 and 35 years (M age?=?26.8 years, SD?=?5.92). The results revealed that at different times, the same stressor

Adam R. Nicholls; Andrew R. Levy; Leigh Jones; Malathy Rengamani; Remco C. J. Polman

2011-01-01

245

Deconstructing the concept of the healthy eater self-schematic: relations to dietary intake, weight and eating cognitions.  

PubMed

This study investigated differences in dietary intake, weight status, food preoccupation, and attributions about healthy eating lapses between individuals classified as healthy eater self-schematics and nonschematics. The study also assessed whether the separate dimensions of the self-schema construct (self-description as a healthy eater and perceived importance of being a healthy eater to self-image) are related to these health outcomes. College students (N=125; 82% female) completed questionnaires assessing healthy eater self-schema status, dietary intake, weight status, food preoccupation, and lapse attributions. Results revealed that females who were classified as healthy eater self-schematics ate more fruits and vegetables, ate less junk food and had lower BMIs than nonschematics. Healthy eater self-schematics also engaged in more positive thoughts and fewer negative thoughts about food, made less stable attributions about lapses in healthy eating and endorsed more personal control over lapses. When the two dimensions of the self-schema were examined separately, self-description appeared to be more related to these outcomes than perceived importance. PMID:22365791

Holub, Shayla C; Haney, Ann M; Roelse, Holly

2012-01-16

246

Extending wire rope service life  

SciTech Connect

Selecting the proper wire rope is not a simple procedure. Wire rope is a precision mining machine with scores of moving parts. It is therefore important for mining equipment users to know wire rope and how it is designed and constructed. Good lubrication and regular inspection is important for a safe and long service life.

Not Available

1982-06-01

247

Approximations to wire grid inductance.  

SciTech Connect

By using a multipole-conformal mapping expansion for the wire currents we examine the accuracy of approximations for the transfer inductance of a one dimensional array of wires (wire grid). A simple uniform fit is constructed by introduction of the decay factor from bipolar coordinates into existing formulas for this inductance.

Warne, Larry Kevin; Johnson, William Arthur; Merewether, Kimball O.

2004-06-01

248

Production of hot-wires  

NASA Astrophysics Data System (ADS)

Several methods for producing hot-wire probes are described. Discussion includes the manufacture of probe bodies, soldering plated wires to the prongs etching Walaston type wires, and finishing the probe. This report is written as an instruction manual for researchers who desire to produce or repair their own sensors.

Dickinson, S. C.

1983-04-01

249

High temperature superconducting composite wires  

Microsoft Academic Search

High temperature superconducting composite wires are fast emerging as a new advanced materials technology. Rapid progress has been made towards demonstrating practical levels of superconducting performance across long lengths of high temperature superconducting composite wire fabricated using a manufacturable process. This progress has allowed a first generation of composite wire products that is driving commercialization of high temperature superconductivity. Recent

G. N Riley; Q Li; L. G Fritzemeier

1999-01-01

250

Wire vibration, bowing, and breakage in wire electrical discharge machining  

NASA Astrophysics Data System (ADS)

This article provides an analysis of the wire electrical discharge machining (EDM) process. The causes of wire vibration, bowing, and breakage are identified. The cross sectional configuration of an eroded wire is derived from basic physics under the assumption that the erosion rate is constant. This configuration is verified experimentally with further explanation as to why numerous experimental studies have yielded different configurations. A computational model has been developed that can evaluate the systematic effects that lead to wire breakage by determining the stress induced by wire erosion and the stress induced by the sparks during the operation of a wire-cutting EDM machine. This model is also capable of determining the extent of wire bowing and vibrations in these machines but only in the frontal direction. The model is supported by data from experiments performed on an AGIECUT 612 wire machine cutting a 10 mm high copper bar with a 0.15 mm brass wire to acquire wire breakage data. The nearly parabolic shape of the bowed wire agrees with the results of other authors making more restrictive assumptions.

Arunachalam, C.; Aulia, M.; Bozkurt, B.; Eubank, P. T.

2001-04-01

251

Diagrams for laser materials processing  

NASA Astrophysics Data System (ADS)

An analytical heat flow model is used to identify dimensionless parameter groups which determine the temperature field produced in a material by a scanning laser beam. The groups are used to plot experimental data for metallic alloys on a processing diagram for a range of continuous CO2 laser treatments. Practical operating regions for each type of treatment are thus identified, which coincide with those predicted using the heat flow model. The model is extended in order to construct more detailed diagrams for transformation hardening, surface melting and keyhole welding, which quantify the depth of treatment. By using realistic estimates of certain poorly-known process variables, good agreement is observed between measured and predicted data. Methods for optimizing processing parameters with respect to various criteria are presented for transformation hardening. The diagrams, which are constructed on a personal computer, are a useful tool for summarizing current data, optimizing practical processing parameters, and assessing the potential of novel laser treatments on new materials.

Ion, J. C.; Shercliff, H. R.; Ashby, M. F.

1992-07-01

252

Matched designs and causal diagrams.  

PubMed

We use causal diagrams to illustrate the consequences of matching and the appropriate handling of matched variables in cohort and case-control studies. The matching process generally forces certain variables to be independent despite their being connected in the causal diagram, a phenomenon known as unfaithfulness. We show how causal diagrams can be used to visualize many previous results about matched studies. Cohort matching can prevent confounding by the matched variables, but censoring or other missing data and further adjustment may necessitate control of matching variables. Case-control matching generally does not prevent confounding by the matched variables, and control of matching variables may be necessary even if those were not confounders initially. Matching on variables that are affected by the exposure and the outcome, or intermediates between the exposure and the outcome, will ordinarily produce irremediable bias. PMID:23918854

Mansournia, Mohammad A; Hernán, Miguel A; Greenland, Sander

2013-06-01

253

Pseudohaptic interaction with knot diagrams  

NASA Astrophysics Data System (ADS)

To make progress in understanding knot theory, we need to interact with the projected representations of mathematical knots, which are continuous in three dimensions (3-D) but significantly interrupted in the projective images. One way to achieve such a goal is to design an interactive system that allows us to sketch two-dimensional (2-D) knot diagrams by taking advantage of a collision-sensing controller and explore their underlying smooth structures through a continuous motion. Recent advances of interaction techniques have been made that allow progress in this direction. Pseudohaptics that simulate haptic effects using pure visual feedback can be used to develop such an interactive system. We outline one such pseudohaptic knot diagram interface. Our interface derives from the familiar pencil-and-paper process of drawing 2-D knot diagrams and provides haptic-like sensations to facilitate the creation and exploration of knot diagrams. A centerpiece of the interaction model simulates a physically reactive mouse cursor, which is exploited to resolve the apparent conflict between the continuous structure of the actual smooth knot and the visual discontinuities in the knot diagram representation. Another value in exploiting pseudohaptics is that an acceleration (or deceleration) of the mouse cursor (or surface locator) can be used to indicate the slope of the curve (or surface) of which the projective image is being explored. By exploiting these additional visual cues, we proceed to a full-featured extension to a pseudohaptic four-dimensional (4-D) visualization system that simulates the continuous navigation on 4-D objects and allows us to sense the bumps and holes in the fourth dimension. Preliminary tests of the software show that main features of the interface overcome some expected perceptual limitations in our interaction with 2-D knot diagrams of 3-D knots and 3-D projective images of 4-D mathematical objects.

Weng, Jianguang; Zhang, Hui

2012-07-01

254

Novel quantum wire infrared photodetectors  

NASA Astrophysics Data System (ADS)

This paper describes novel semiconductor quantum wire infrared photodetectors in the long- and very long-wavelength regions. The infrared photodetectors are based on intersubband transitions in semiconductor quantum wires and have the potential for higher operational temperature, increased signal-to-noise ratio, reduced dark current, wider spectral range and sensitivity to normal incident radiation. The quantum wire IR detectors are implemented using a nonlithographic nanostructure fabrication technique that is capable of producing large arrays of semiconductor quantum wires of a variety of materials and on different substrates. This paper describes the operational principles, the design procedure as well as the implementation of the quantum wire photodetectors.

Das, Biswajit; Singaraju, Pavan

2005-01-01

255

Deformation of Electronic Structures Due to CoO6 Distortion and Phase Diagrams of NaxCoO2\\cdotyH2O  

NASA Astrophysics Data System (ADS)

Motivated by recently reported experimental phase diagrams, we study the effects of CoO6 distortion on the electronic structure in NaxCoO2\\cdotyH2O. We construct the multiband tight-binding model by employing the LDA result. Analyzing this model, we show the deformation of band dispersions and Fermi-surface topology as functions of CoO2-layer thickness. Considering these results together with previous theoretical ones, we propose a possible schematic phase diagram with three successive phases: the extended s-wave superconductivity (SC), the magnetic order, and the spin-triplet SC phases when the Co valence number s is +3.4. A phase diagram with only one phase of spin-triplet SC is also proposed for the s = +3.5 case.

Mochizuki, Masahito; Ogata, Masao

2006-11-01

256

Construct validity of the bem sex role inventory (BSRI): Does the BSRI distinguish between gender-schematic and gender-aschematic individuals?  

Microsoft Academic Search

Factor analyses were performed on the masculine, feminine, and neutral items of the Bem Sex Role Inventory (BSRI) for gender-schematic and gender-aschematic individuals separately. The analyses revealed bipolar masculinity\\/femininity factors for the gender-schematic group and two unipolar “aschematicity” factors for the gender-aschematic group. The results support gender schema theory's claim that the two types of individuals respond differently to the

Bernd H. Schmitt; Robert T. Millard

1988-01-01

257

Differential Effects of an Adult Observer’s Presence on Sex-Typed Play Behavior: A Comparison Between Gender-Schematic and Gender-Aschematic Preschool Children  

Microsoft Academic Search

The present study examined the differential effect of an adult observer’s presence on the sex-typed play behavior of gender\\u000a schematic and aschematic preschoolers. A total of 116 Israeli preschoolers (M age = 64.9 months) participated in the study. Children were classified as either gender schematic or aschematic based upon\\u000a responses to a computerized measure of different sex stereotype components. Children’s play behavior with

Pamela Wilansky-Traynor; Thalma E. Lobel

2008-01-01

258

Understanding Guitar Wiring  

NSDL National Science Digital Library

This zipped file provides a number of documents which will help students understand the particulars of guitar wiring. The documents cover the three-way toggle switch, the 5-way lever-action switch, magnetic pick-ups, mini toggle switches, output jacks, selector switches and other details. Once the zipped file is downloaded, the documents (which are in Microsoft Word doc file format) may be viewed.

2012-08-13

259

The Butterfly Diagram internal structure .  

NASA Astrophysics Data System (ADS)

A new graphic representation of the spotgroup distribution with respect to time and latitude is presented. At variance with Maunder's Butterfly Diagram, which registers the mere presence of spotgroups, the diagram presented here accounts for the spotgroup area. It shows that spotgroups aggregate in a few small, heavenly spotted portions (``knots'') of the diagram. Each knot is the signature of a photospheric region tightly limited in latitude, active for a short time. The butterfly diagram is but a cluster of knots and the spot zone is the latitude range inside which knots activate. The cycle is a sequence of knots activations and extinctions. Even though knots show the overall tendency to appear at lower and lower latitudes as the cycle goes on, a knot may appear at either lower or higher latitudes than previous ones. The examination of the knot distribution inside the ``butterfly wings'' suggests that - at any cycle and at any hemisphere - two ``activity waves" drift equatorward at a rate roughly twice the drift rate of the spot zone as a whole.

Ternullo, M.

260

Voronoi Diagrams and Spring Rain  

ERIC Educational Resources Information Center

|The goal of this geometry project is to use Voronoi diagrams, a powerful modeling tool across disciplines, and the integration of technology to analyze spring rainfall from rain gauge data over a region. In their investigation, students use familiar equipment from their mathematical toolbox: triangles and other polygons, circumcenters and…

Perham, Arnold E.; Perham, Faustine L.

2011-01-01

261

Concrete and Abstract Voronoi Diagrams  

Microsoft Academic Search

The Voronoi diagram of a set of sites is a partition of the plane into regions, one to each site, such that the region of each site contains all points of the plane that are closer to this site than to the other ones. Such partitions are of great importance to computer science and many other fields. The challenge is

Rolf Klein

1989-01-01

262

Animated Diagram: Sedimentary Rock Identification  

NSDL National Science Digital Library

This Flash-enabled diagram provides a scheme for sedimentary rock identification accompanied by pop-up images of the rocks. Rolling the mouse over highlighted boxes links texture, grain size, composition, and map symbols to images of a variety of sedimentary rocks. The animation is downloadable.

263

Validation of Causal Loop Diagrams  

Microsoft Academic Search

In this paper, we present techniques for manually assessing the structural validity of each link in a causal loop diagram (CLD). A link is defined as consisting of an origination quantity, a destination quantity and a connection edge between them. Each link is considered as a separate and distinct causal hypothesis whose validity should stand on its own merits. Following

James R. Burns

264

QCD phase diagram: an overview  

NASA Astrophysics Data System (ADS)

The aim of this review is to summarize the contemporary understanding of the QCD phase di- agram as a function of temperature T and baryo-chemical potential µB . The focus is on recent theoretical developments due to lattice simulations of the phase diagram.

Stephanov, Misha

2006-12-01

265

Precipitation and the Sounding Diagram  

NSDL National Science Digital Library

This undergraduate meteorology tutorial deals with the interplay between the vertical temperature structure of the atmosphere and the temperature of the ascending air in the formation of precipitation. Students learn about the dry and moist adiabatic lapse rates, reading and interpreting sounding diagrams, and determining the change in temperature as air parcels rise or sink.

Nielsen-Gammon, John

1996-01-01

266

Stability diagrams for Landau damping  

Microsoft Academic Search

Coherent modes which are present when there is no incoherent tune spread may be absent when such a spread exists. Such modes are “Landau damped”. There is instead an incoherent spectrum, a continuum of an infinite number of frequencies, which will decohere (filament), thus not leading to collective instabilities. A stability diagram indicates when Landau damping will be effective. It

J. Scott Berg; Francesco Ruggiero

1997-01-01

267

Voronoi Diagrams on Periodic Graphs  

Microsoft Academic Search

A periodic graph models various natural and artificial periodic patterns with repetitions of a given static graph, and have vast applications in crystallography, scheduling, VLSI circuits and systems of uniform recurrence equations. This paper considers a graph Voronoi diagram for a given subset of vertices on a periodic graph. The simplest two-dimensional periodic graph is a square lattice, and the

Norie Fu; Hiroshi Imai; Sonoko Moriyama

2010-01-01

268

Dual wire welding torch and method  

DOEpatents

A welding torch includes a nozzle with a first welding wire guide configured to orient a first welding wire in a first welding wire orientation, and a second welding wire guide configured to orient a second welding wire in a second welding wire orientation that is non-coplanar and divergent with respect to the first welding wire orientation. A method of welding includes moving a welding torch with respect to a workpiece joint to be welded. During moving the welding torch, a first welding wire is fed through a first welding wire guide defining a first welding wire orientation and a second welding wire is fed through a second welding wire guide defining a second welding wire orientation that is divergent and non-coplanar with respect to the first welding wire orientation.

Diez, Fernando Martinez (Peoria, IL); Stump, Kevin S. (Sherman, IL); Ludewig, Howard W. (Groveland, IL); Kilty, Alan L. (Peoria, IL); Robinson, Matthew M. (Peoria, IL); Egland, Keith M. (Peoria, IL)

2009-04-28

269

Influence of Grain Boundaries and Sn Distribution on the HT Phase Diagram of Nb3Sn  

Microsoft Academic Search

We measured the 1st and 3rd harmonics of the AC magnetic susceptibility as a function of the temperature and the DC magnetic field, on several Nb3Sn samples (single crystal, polycrystalline samples and multifilamentary wires), with different pinning properties. From these measurements, the Bragg phase, the disordered one and the irreversibility line have been identified in the H-T phase diagram of

Maria G. Adesso; Rene Flukiger; Davide Uglietti; Massimiliano Polichetti; Sandro Pace

2007-01-01

270

Causal Construction of the Massless Vertex Diagram  

NASA Astrophysics Data System (ADS)

The massless one-loop vertex diagram is constructed by exploiting the causal structure of the diagram in configuration space, which can be translated directly into dispersive relations in momentum space.

Aste, Andreas

2006-11-01

271

Hero's journey in bifurcation diagram  

NASA Astrophysics Data System (ADS)

The hero's journey is a narrative structure identified by several authors in comparative studies on folklore and mythology. This storytelling template presents the stages of inner metamorphosis undergone by the protagonist after being called to an adventure. In a simplified version, this journey is divided into three acts separated by two crucial moments. Here we propose a discrete-time dynamical system for representing the protagonist's evolution. The suffering along the journey is taken as the control parameter of this system. The bifurcation diagram exhibits stationary, periodic and chaotic behaviors. In this diagram, there are transition from fixed point to chaos and transition from limit cycle to fixed point. We found that the values of the control parameter corresponding to these two transitions are in quantitative agreement with the two critical moments of the three-act hero's journey identified in 10 movies appearing in the list of the 200 worldwide highest-grossing films.

Monteiro, L. H. A.; Mustaro, P. N.

2012-06-01

272

A Formal Semantics of Data Flow Diagrams  

Microsoft Academic Search

This document presents a full version of the formal semantics of data ow diagrams reported in [Larsen&93]. Data Flow Diagrams are used in Structured Analysis and are based on an abstract model for data flow transformations. The semantics consists of a collection of VDM functions, transforming an abstract syntax representation of a data flow diagram into an abstract syntax representation

Peter Gorm Larsen; Nico Plat; Hans Toetenel

1994-01-01

273

Retrieving Information from Data Flow Diagrams  

Microsoft Academic Search

For reverse engineering, we need tools that can extract information from documents written before routine digital storage was feasible. Documents contain both text and diagrams; data flow diagrams play a prominent role in software documents. Using current techniques, it is possible to recover the information in a data flow diagram by scanning the printed document and processing the data obtained.

Gregory Butler; Peter Grogono; Rajjan Shinghal; Indra A. Tjandra

1995-01-01

274

A Layout Algorithm for Data Flow Diagrams  

Microsoft Academic Search

A layout algorithm is presented that allows the automatic drawing of data flow diagrams, a diagrammatic representation widely used in the functional analysis of information systems. A grid standard is defined for such diagrams, and aesthetics for a good readability are identified. The layout algorithm receives as input an abstract graph, specifying connectivity relations between the elements of the diagram,

Carlo Batini; Enrico Nardelli; Roberto Tamassia

1986-01-01

275

Semantics of the Domain of Flow Diagrams  

Microsoft Academic Search

A domain of flow diagrams similar to that proposed by Scott, a domain of linear flow diagrams proposed by Goguen et al , a domain of decision table diagrams involving mfimtary branching, and a domain of processes based on the ideas of Milner and Beklc are each provided with a direct semantics, closely related to partial-function semantics, and a continuation

John C. Reynolds

1977-01-01

276

Arrows in Comprehending and Producing Mechanical Diagrams  

ERIC Educational Resources Information Center

|Mechanical systems have structural organizations--parts, and their relations--and functional organizations--temporal, dynamic, and causal processes--which can be explained using text or diagrams. Two experiments illustrate the role of arrows in diagrams of mechanical systems. In Experiment 1, people described diagrams with or without arrows,…

Heiser, Julie; Tversky, Barbara

2006-01-01

277

Calculations of forming limit diagrams  

Microsoft Academic Search

The right-hand side of the forming limit diagram (FLD) was calculated using a Marciniak-Kuczynski analysis with a nonquadratic\\u000a anisotropic yield criterion. Effects of changing the strain-hardening exponent, n, strain-rate exponent, m, strain ratio,\\u000a R, stress exponent in the anisotropic yield criterion, a, and the inhomogeneity factor, f, were explored. For a ? 6, the effect\\u000a of R is negligible. The

Alejandro Graf; William F. Hosford

1990-01-01

278

T-X Phase Diagrams  

NSDL National Science Digital Library

This is a 15 page tutorial and problem set designed to get students familiar with T-X diagrams, their implications, and uses. Students start by reading but, after 10-15 minutes, the room becomes noisy as they work their way through the questions at the end. Often there are "Eureka" moments as they all of a sudden grasp some fundamental principles. It is also interesting to hear them try to explain these insights to others.

Perkins, Dexter

279

Phase Diagrams and Chemographic Projections  

NSDL National Science Digital Library

This exercise is a good way to get students thinking about the phase rule, metastable and stable reactions and phase diagrams. The exercise contains a lot of reading, and is suitable for in-class work or for homework. The idea is that students can do this on their own with little help from their instructor. The students only answer a few questions making this is more of a tutorial than a worksheet.

Perkins, Dexter

280

INCONEL 718: A solidification diagram  

Microsoft Academic Search

As part of a program studying weldability of Ni-base superalloys, results of an integrated analytical approach are used to\\u000a generate a constitution diagram for INCONEL 718* in the temperature range associated with solidification. Differential thermal analysis of wrought material and optical and\\u000a scanning electron microscopy, electron probe microanalysis, and analytical electron microscopy of gas tungsten arc welds are\\u000a used in

G. A. Knorovsky; M. J. Cieslak; T. J. Headley; A. D. Romig; W. F. Hammetter

1989-01-01

281

Phase Diagram of Tetragonal Manganites  

Microsoft Academic Search

The phase diagram of La1-xSrxMnO3, as a function of hole doping x and tetragonal distortion c\\/a, which consists of ferromagnetic (FM), A-, C-, and G-type antiferromagnetic (AF) states, is obtained by the first-principles band structure calculations. Effects of tetragonal distortion on the magnetic ordering are discussed in terms of orbital ordering and anisotropy in the hopping integrals. The general sequence

Z. Fang; I. V. Solovyev; K. Terakura

2000-01-01

282

Causal diagrams in systems epidemiology  

PubMed Central

Methods of diagrammatic modelling have been greatly developed in the past two decades. Outside the context of infectious diseases, systematic use of diagrams in epidemiology has been mainly confined to the analysis of a single link: that between a disease outcome and its proximal determinant(s). Transmitted causes ("causes of causes") tend not to be systematically analysed. The infectious disease epidemiology modelling tradition models the human population in its environment, typically with the exposure-health relationship and the determinants of exposure being considered at individual and group/ecological levels, respectively. Some properties of the resulting systems are quite general, and are seen in unrelated contexts such as biochemical pathways. Confining analysis to a single link misses the opportunity to discover such properties. The structure of a causal diagram is derived from knowledge about how the world works, as well as from statistical evidence. A single diagram can be used to characterise a whole research area, not just a single analysis - although this depends on the degree of consistency of the causal relationships between different populations - and can therefore be used to integrate multiple datasets. Additional advantages of system-wide models include: the use of instrumental variables - now emerging as an important technique in epidemiology in the context of mendelian randomisation, but under-used in the exploitation of "natural experiments"; the explicit use of change models, which have advantages with respect to inferring causation; and in the detection and elucidation of feedback.

2012-01-01

283

INCONEL 718: A solidification diagram  

NASA Astrophysics Data System (ADS)

As part of a program studying weldability of Ni-base superalloys, results of an integrated analytical approach are used to generate a constitution diagram for INCONEL 718* in the temperature range associated with solidification. Differential thermal analysis of wrought material and optical and scanning electron microscopy, electron probe microanalysis, and analytical electron microscopy of gas tungsten arc welds are used in conjunction with solidification theory to generate data points for this diagram. The important features of the diagram are an austenite (?)/Laves phase eutectic which occurs at ?19.1 wt pct Nb between austenite containing ?9.3 wt pct Nb and a Laves phase which contains ?22.4 wt pct Nb. The distribution coefficient for Nb was found to be ?0.5. The solidification sequence of INCONEL 718 was found to be (1) proeutectic ?, followed by (2) a ?/NbC eutectic at ?1250°C, followed by (3) continued ? solidification, followed by (4) a ?/Laves phase eutectic at ?1200°C. An estimate of the volume fraction eutectic is made using the Scheil solidification model, and the fraction of each phase in the eutectic is calculated via the lever rule. These are compared with experimentally determined values and found to be in good agreement.

Knorovsky, G. A.; Cieslak, M. J.; Headley, T. J.; Romig, A. D.; Hammetter, W. F.

1989-10-01

284

Nonchiral edge states at the chiral metal-insulator transition in disordered quantum Hall wires  

NASA Astrophysics Data System (ADS)

The quantum phase diagram of disordered wires in a strong magnetic field is studied as a function of wire width and energy. The two-terminal conductance shows zero-temperature discontinuous transitions between exactly integer plateau values and zero. In the vicinity of this transition, the chiral metal-insulator transition (CMIT), states are identified that are superpositions of edge states with opposite chirality. The bulk contribution of such states is found to decrease with increasing wire width. Based on exact diagonalization results for the eigenstates and their participation ratios, we conclude that these states are characteristic for the CMIT, have the appearance of nonchiral edges states, and are thereby distinguishable from other states in the quantum Hall wire, namely, extended edge states, two-dimensionally (2D) localized, quasi-1D localized, and 2D critical states.

Struck, Alexander; Kramer, Bernhard; Ohtsuki, Tomi; Kettemann, Stefan

2005-07-01

285

Asteroseismology "on a WIRE"  

NASA Astrophysics Data System (ADS)

The Wide-field Infra Red Explorer (WIRE) was launched in March 1999. Its main mission failed due to loss of coolant, but the 52 mm aperture star camera was used for asteroseismology. A few results are already published, but other bright variable stars were observed as well. Here we present an overview of the preliminary results and detailed period analyses on WIRE data of massive main-sequence pulsators. The period of the ? Scuti star ? Cas could be easily recovered. In an almost uninterrupted observing run of 17 days on the 16 Msolar star ? Crucis (Mimosa) multiperiodicity could be found in the light variations of this ? Cephei variable. Ground-based photometry so far revealed only one period for this star. Although the amplitudes are small (3, 2.7 and 0.6 millimag for the dominant modes), the periods are in perfect agreement with the results of a recent line profile study of this star. Indications of more periods, including a previously suggested one, are present. The results obtained during this unintentional and unadapted asteroseismology project are extremely promising. They show only a tiny fraction of the outcome of a fully adapted asteroseismological mission like Eddington.

Cuypers, J.; Aerts, C.; Buzasi, D.; Catanzarite, J.; Conrow, T.; Laher, R.

2002-01-01

286

The impact of map orientation and generalisation on congestion decisions: a comparison of schematic-egocentric and topographic-allocentric maps.  

PubMed

Map information for drivers is usually presented in an allocentric-topographic form (as with printed maps) or in an egocentric-schematic form (as with road signs). The advent of new variable message boards on UK motorways raises the possibility of presenting road maps to reflect congestion ahead. Should these maps be allocentric-topographic or egocentric-schematic? This was assessed in an eye tracking study, with participants viewing maps of a motorway network in order to identify whether any congestion was relevant to their intended route. The schematic-egocentric maps were responded to most accurately with shorter fixation durations suggesting easier processing. In particular, the driver's entrance and intended exit from the map were attended to more in the allocentric maps. Individual differences in mental rotation ability also seem to contribute to poor performance on allocentric maps. The results favour schematic-egocentric maps for roadside congestion information, but also provide theoretical insights into map-rotation and individual differences. Statement of Relevance: This study informs designers and policy makers about optimum representations of traffic congestion on roadside variable message signs and, furthermore, demonstrates that individual differences contribute to problems with processing certain sign types. Schematic-egocentric representations of a motorway network produced the best results, as noted in behavioural and eye movement measures. PMID:21846309

Crundall, David; Crundall, Elizabeth; Burnett, Gary; Shalloe, Sally; Sharples, Sarah

2011-08-01

287

The Current in a Wire  

ERIC Educational Resources Information Center

|This little problem arose because I was frustrated with the standard electromagnetism texts, which show the magnetic field due to a current-bearing wire outside the wire [proportional to] 1/r and inside [proportional to] r. However, they never point out that the moving electrons must be influenced by the magnetic field created by the other moving…

Thompson, Keith

2009-01-01

288

Dry reclamation of wire scrap  

Microsoft Academic Search

A method for recovering plastic from plastic insulated wire scrap involving separating the plastic from short segments of the wire by agitating the segments in a heated dry powder medium until the metal is released from the plastic insulation, separating the metal from the plastic insulation leaving at least 0.5 percent by weight of the powder intermixed with the plastic

Scalco

1976-01-01

289

Plastic properties of crumpled wires  

Microsoft Academic Search

In this letter we study nonlinear irreversible mechanical properties of crumpled wires in a large interval of deformations. Power laws connecting the geometrical and mechanical variables for this kind of disordered system are examined. Critical exponents are obtained from experiments and from scaling arguments. The behaviour of crumpled wires and crumpled surfaces are compared.

M. A. F. Gomes; F. F. Lima; V. M. Oliveira

1991-01-01

290

Aircraft wiring program status report  

Microsoft Academic Search

In this Naval Air Warfare Center (NAWC) Aircraft Division status report, the general and wire and cable component activities, the systems engineering activities, the aircraft wiring lead maintenance activities, the NAVAIR\\/NASA interface activities, and the Base Realignment and Closure (BRAC) Commission recommendations are presented.

Rex Beach

1995-01-01

291

Wire Detection Algorithms for Navigation.  

National Technical Information Service (NTIS)

In this research we addressed the problem of obstacle detection for low altitude rotorcraft flight. In particular, the problem of detecting thin wires in the presence of image clutter and noise was studied. Wires present a serious hazard to rotorcrafts. S...

R. Kasturi O. I. Camps

2002-01-01

292

HTS Wire: status and prospects  

Microsoft Academic Search

Practical, robust high temperature superconducting (HTS) wire is a composite of high temperature superconductor and metal. The composite provides many advantages, including improved mechanical properties and stability. Multi-filamentary composite fabricated with the BSCCO HTS material has achieved performance for commercial applications, and commercial price\\/performance is on the near horizon. This wire enables HTS applications such as power cables, marine propulsion

A. P. Malozemoff; D. T. Verebelyi; S. Fleshler; D. Aized; D. Yu

2003-01-01

293

Aircraft wiring program status report  

NASA Astrophysics Data System (ADS)

In this Naval Air Warfare Center (NAWC) Aircraft Division status report, the general and wire and cable component activities, the systems engineering activities, the aircraft wiring lead maintenance activities, the NAVAIR/NASA interface activities, and the Base Realignment and Closure (BRAC) Commission recommendations are presented.

Beach, Rex

1995-11-01

294

Flying hot-wire anemometry  

Microsoft Academic Search

A flying hot-wire arrangement has been developed for the measurement of the velocity characteristics of the flow around airfoils, and particularly in regions where negative values of instantaneous velocity occur. The mechanism and signal processing system are described and appraised by comparing stationary and flying wire measurements obtained in the trailing edge region of a flap at an angle of

B. E. Thompson; J. H. Whitelaw

1984-01-01

295

Tungsten wire for incandescent lamps  

SciTech Connect

Tungsten wire for incandescent lamp filaments must operate at high temperatures and for long times. To meet these requirements, the grain morphology of the wire must be controlled to reduce the propensity for grain boundary sliding. The morphology is a function of the distribution of very small pockets of potassium in the wire and the mechanical processing from ingot to wire. The behavior of the filament is directly related to the grain morphology. This paper describes the mechanism by which the potassium is incorporated into and distributed in the ingot. The elongation and spheroidization of the bubbles during hot rolling and swaging is also examined and related to the grain morphology of wire. Some indications of the relationship between grain morphology and filament behavior are also given.

Walter, J.L.; Briant, C.L. (General Electric Corporate Research and Development, Schenectady, NY (USA))

1990-09-01

296

Electrode carrying wire for GTAW welding  

NASA Astrophysics Data System (ADS)

A welding torch for gas tungsten arc welding apparatus has a hollow tungsten electrode including a ceramic liner and forms the filler metal wire guide. The wire is fed through the tungsten electrode thereby reducing the size of the torch to eliminate clearance problems which exist with external wire guides. Since the wire is preheated from the tungsten more wire may be fed into the weld puddle, and the wire will not oxidize because it is always within the shielding gas.

Morgan, Gene E.; Dyer, Gerald E.

1990-05-01

297

Measurement of wire electrode temperature in WEDM  

Microsoft Academic Search

Wire temperature is an important parameter in the wire electro-discharge machining (WEDM) process because overheating of the\\u000a wire can cause the wire to break. It is difficult, however, to measure the wire temperature directly under the condition that\\u000a the wire is emerged in water and surrounded by the workpiece. Only mathematical analyses by now have been reported to determine\\u000a such

Fuzhu Han; Gang Cheng; Zhijing Feng; Isago Soichiro

2009-01-01

298

Sintered wire cathode  

DOEpatents

A porous cathode structure is fabricated from a plurality of wires which are placed in proximity to each other in elevated temperature and pressure for a sintering time. The sintering process produces the porous cathode structure which may be divided into a plurality of individual porous cathodes, one of which may be placed into a dispenser cathode support which includes a cavity for containing a work function reduction material such as BaO, CaO, and Al.sub.2O.sub.3. The work function reduction material migrates through the pores of the porous cathode from a work replenishment surface adjacent to the cavity of the dispenser cathode support to an emitting cathode surface, thereby providing a dispenser cathode which has a uniform work function and therefore a uniform electron emission.

Falce, Louis R. (San Jose, CA); Ives, R. Lawrence (Saratoga, CA)

2009-06-09

299

Nano-storage wires.  

PubMed

We report the development of "nano-storage wires" (NSWs), which can store chemical species and release them at a desired moment via external electrical stimuli. Here, using the electrodeposition process through an anodized aluminum oxide template, we fabricated multisegmented nanowires composed of a polypyrrole segment containing adenosine triphosphate (ATP) molecules, a ferromagnetic nickel segment, and a conductive gold segment. Upon the application of a negative bias voltage, the NSWs released ATP molecules for the control of motor protein activities. Furthermore, NSWs can be printed onto various substrates including flexible or three-dimensional structured substrates by direct writing or magnetic manipulation strategies to build versatile chemical storage devices. Since our strategy provides a means to store and release chemical species in a controlled manner, it should open up various applications such as drug delivery systems and biochips for the controlled release of chemicals. PMID:23859333

Lee, Dong Jun; Kim, Eunji; Kim, Daesan; Park, Juhun; Hong, Seunghun

2013-07-19

300

Phase diagram of tetragonal manganites  

PubMed

The phase diagram of La1-xSrxMnO3, as a function of hole doping x and tetragonal distortion c/a, which consists of ferromagnetic (FM), A-, C-, and G-type antiferromagnetic (AF) states, is obtained by the first-principles band structure calculations. Effects of tetragonal distortion on the magnetic ordering are discussed in terms of orbital ordering and anisotropy in the hopping integrals. The general sequence of the magnetic ground states, FM --> A-AF --> C-AF --> G-AF with increasing of x, is also explained based on the instability of FM states with respect to the spin-wave excitations. PMID:11019039

Fang; Solovyev; Terakura

2000-04-01

301

Structural Phase Diagram of Ca  

SciTech Connect

To help the understanding of the physical behavior of Ca{sub 1-x}Y{sub x}MnO{sub 3}, its phase diagram in the whole x concentration range was investigated taking into account the stability of phases and the possible coexistence of different structural phases. By careful analysis of powder X-ray diffraction (XRD) patterns, we were able to observe the following phase diagram: (i) Orthorhombic phases were detected both in the region of 0 {le} x {le} 0.25 (O type phase with Ca site twelve fold coordinated) and in the region of 0.5 {le} x {le} 0.75 (O' type phase with Ca site ninefold coordinated). (ii) Phase segregation for 0.25 {le} x {le} 0.5 and for x > 0.75 that have not been reported previously, hexagonal YMnO{sub 3} segregates as a separate phase for x > 0.75, and for 0.25 {le} x {le} 0.5 the coexistence of Ca{sub 0.75}Y{sub 0.25}MnO{sub 3} (O) and Ca{sub 0.5}Y{sub 0.5}MnO{sub 3} (O') have to be included in the refinement for it to converge.

Vega, D.; Polla, G.; Leyva, A. G.; Konig, P.; Lanza, H.; Esteban, A.; Aliaga, H.; Causa, M. T.; Tovar, M.; Alascio, B.

2001-02-01

302

HTS Wire: status and prospects  

NASA Astrophysics Data System (ADS)

Practical, robust high temperature superconducting (HTS) wire is a composite of high temperature superconductor and metal. The composite provides many advantages, including improved mechanical properties and stability. Multi-filamentary composite fabricated with the BSCCO HTS material has achieved performance for commercial applications, and commercial price/performance is on the near horizon. This wire enables HTS applications such as power cables, marine propulsion motors, utility generators and magnets for materials processing. Coated conductor is also a composite, combining the YBCO HTS material with a metal or metal-alloy substrate; this technology is in the stage of research and development. The status and commercial prospects of these wire technologies are reviewed.

Malozemoff, A. P.; Verebelyi, D. T.; Fleshler, S.; Aized, D.; Yu, D.

2003-04-01

303

Some interesting color-magnitude diagrams  

NASA Astrophysics Data System (ADS)

Some CCD color-magnitude diagrams for a few open clusters, global clusters, and dwarf spheroidal galaxies in the Local Group are presented. Consideration is given to the open clusters NGC 7789, NGC 2818, NGC 6205, and NGC 6341, the spheroidal galaxy in Draco, the B, R color-magnitude diagram of Carina, and the B, R color-magnitude diagram for the dwarf spheroidal galaxy in Fornax.

Stetson, Peter B.

1997-07-01

304

Object Flow Definition for Refined Activity Diagrams  

Microsoft Academic Search

Activity diagrams are a well-known means to model the control flow of system behavior. Their expressiveness can be enhanced\\u000a by using their object flow notation. In addition, we refine activities by pairs of pre- and post-conditions formulated by\\u000a interrelated object diagrams. To define a clear semantics for refined activity diagrams with object flow, we use a graph transformation\\u000a approach. Control

Stefan Jurack; Leen Lambers; Katharina Mehner; Gabriele Taentzer; Gerd Wierse

2009-01-01

305

Linking the Macroscopic and Submicroscopic Levels: Diagrams  

Microsoft Academic Search

Explanations of chemical phenomena are nearly always focused at the sub-micro level, a level that cannot be observed, yet\\u000a are normally provided with diagrams at the symbolic level. These diagrams represent the macro and sub-micro levels of matter.\\u000a The connections between the macro level and the diagrams of the sub-micro level are not always apparent to students, indicating\\u000a a need

Bette Davidowitz; Gail Chittleborough

306

Multiresolution Approximations of Generalized Voronoi Diagrams  

Microsoft Academic Search

\\u000a A framework to support multiresolution approximations of planar generalized Voronoi diagrams is presented. Our proposal is:\\u000a (1) A multiresolution model based on a quadtree data structure which encodes approximations of a generalized Voronoi diagram\\u000a at different levels of detail. (2) A user driven refinement strategy which generates from the quadtree a continuous polygonal\\u000a approximation of the Voronoi diagram.

Imma Boada; Narcís Coll; Joan Antoni Sellarès

2004-01-01

307

A Regime Diagram for Subduction  

NASA Astrophysics Data System (ADS)

Regime diagrams and associated scaling relations have profoundly influenced our understanding of planetary dynamics. Previous regime diagrams characterized the regimes of stagnant-lid, small viscosity contrast, transitional, and no-convection for temperature-dependent (Moresi and Solomatov, 1995), and non-linear power law rheologies (Solomatov and Moresi, 1997) as well as stagnant-lid, sluggish-lid, and mobile-lid regimes once the finite strength of rock was considered (Moresi and Solomatov, 1998). Scalings derived from such models have been the cornerstone for parameterized models of thermal evolution of rocky planets and icy moons for the past decade. While such a theory can predict the tectonic state of a planetary body, it is still rather incomplete in regards to predicting tectonics. For example, the mobile-lid regime is unspecific as to how continuous lithospheric recycling should occur on a terrestrial planet. Towards this goal, Gerya et al., (2008) advanced a new regime diagram aiming to characterize when subduction would manifest itself as a one-sided or two-sided downwelling and either symmetric or asymmetric. Here, we present a regime diagram for the case of a single-sided, asymmetric type of subduction (most Earth-like type). Using a 3-D numerical model of a free subduction, we describe a total of 5 different styles of subduction that can possibly occur. Each style is distinguished by its upper mantle slab morphology resulting from the sinking kinematics. We provide movies to illustrate the different styles and their progressive time-evolution. In each regime, subduction is accommodated by a combination of plate advance and slab rollback, with associated motions of forward plate velocity and trench retreat, respectively. We demonstrate that the preferred subduction mode depends upon two essential controlling factors: 1) buoyancy of the downgoing plate and 2) strength of plate in resisting bending at the hinge. We propose that a variety of subduction regimes are generated primarily as a product of two mechanisms. The first mechanism is that of the competition between the weight of the slab and the strength of the plate, which can be understood in terms of the applied bending moment, and this competition results in a particular radius of curvature (for which we provide a simple scaling theory). The second mechanism is the interaction between the slab and the more viscous lower mantle, which produces each regime's distinct slab morphology. Thus, the emergence of five distinct styles of subduction is a direct consequence of the presence of the modest barrier to flow into the lower mantle. Although only 2 of these styles presently operate on Earth, the possibility exists that other modes may have been the predominant mode in the past. Based on these models, we propose that the lithosphere is the primary factor in describing key elements of the plate tectonics system over time, rather than the convecting mantle. We discuss the various factors that may have influenced secular changes in Earth's tectonic behavior, some of which may have interesting consequences for the geochemical evolution of the Earth.

Stegman, D. R.; Farrington, R.; Capitanio, F. A.; Schellart, W. P.

2009-12-01

308

Hubble's diagram and cosmic expansion.  

PubMed

Edwin Hubble's classic article on the expanding universe appeared in PNAS in 1929 [Hubble, E. P. (1929) Proc. Natl. Acad. Sci. USA 15, 168-173]. The chief result, that a galaxy's distance is proportional to its redshift, is so well known and so deeply embedded into the language of astronomy through the Hubble diagram, the Hubble constant, Hubble's Law, and the Hubble time, that the article itself is rarely referenced. Even though Hubble's distances have a large systematic error, Hubble's velocities come chiefly from Vesto Melvin Slipher, and the interpretation in terms of the de Sitter effect is out of the mainstream of modern cosmology, this article opened the way to investigation of the expanding, evolving, and accelerating universe that engages today's burgeoning field of cosmology. PMID:14695886

Kirshner, Robert P

2003-12-26

309

Holographic Interferometry of Exploding Wires.  

National Technical Information Service (NTIS)

A short pulse (2 nsec) ruby laser has been used to make holographic interferograms of exploding-wire events. At atmospheric pressure the interferograms exhibit both shock waves and ionization. In a vacuum the vaporization and subsequent ionization of the ...

J. L. Seftor

1973-01-01

310

Cad. Of Masks and Wiring.  

National Technical Information Service (NTIS)

Algorithms are discussed for application in computerized design of monolithic integrated circuit masks and wiring. A simple minimum-distance model is generalized so that the outcome is an abstract model. A short introduction to notions in graph theory is ...

M. C. Vanlier R. H. J. M. Otten

1974-01-01

311

Hoists, Chain and Wire Rope.  

National Technical Information Service (NTIS)

The Engineering Test Procedure describes test methods and techniques for evaluating the technical performance and characteristics of Hoists (Chain and Wire Rope Types), and for determining their suitability for service use by the U. S. Army. (Author)

1970-01-01

312

Demonstrating Forces between Parallel Wires.  

ERIC Educational Resources Information Center

|Describes a physics demonstration that dramatically illustrates the mutual repulsion (attraction) between parallel conductors using insulated copper wire, wooden dowels, a high direct current power supply, electrical tape, and an overhead projector. (WRM)|

Baker, Blane

2000-01-01

313

Fly-by-Wire Flight Control Systems.  

National Technical Information Service (NTIS)

The purpose of this paper is to provide the reader with an introduction to fly-by-wire and an outline of state-of-the-art fly-by-wire techniques. An outline of the philosophy of fly-by-wire flight control systems is given, the evolution of fly-by-wire is ...

J. P. Sutherland

1967-01-01

314

New Bonding Wire for Fine Pitch Applications  

Microsoft Academic Search

Over the past few years the trend in bonding wire applications has been characterized by the minimisation of assembling components, and has in turn led to thinner wire and finer pad and pitch size. In particular for gold bonding thinner wire means less expense for precious metal. The requirements for such small wire diameters can only partially be met by

E. Milke; T. Mueller; A. Bischoff

2007-01-01

315

Theorems and extensions of single wire replacement  

Microsoft Academic Search

In this paper, we discuss the theorems and extensions of single alternative wire that attempts to replace one wire by another wire without changing the logic functionality. The wire replacement technique has been successfully applied to achieve logic optimization and routability improve- ment. However, there still exist several fundamental problems that have not been addressed such as whether the algorithm

Shih-chieh Chang; Zhong-zhen Wu

2001-01-01

316

Postlayout logic restructuring using alternative wires  

Microsoft Academic Search

In this paper, we propose a layout-driven synthesis approach for field programmable gate arrays (FPGA's). The approach attempts to identify alternative wires and alternative functions for wires that cannot be routed due to the limited routing resources in FPGA. The alternative wires (in the logic level) that can be routed through less congested areas substitute the unroutable wires without changing

Shih-chieh Chang; Kwang-ting Cheng; Nam-Sung Woo; Malgorzata Marek-sadowska

1997-01-01

317

An investigation on wire wear in WEDM  

Microsoft Academic Search

In this study, the effect of cutting parameters on wire electrode wear was investigated experimentally in wire electrical discharge machining (WEDM). The experiments were conducted under different settings of pulse duration, open circuit voltage, wire speed and dielectric fluid pressure. Brass wire of 0.25mm diameter and AISI 4140 steel of 10mm thickness were used as tool and workpiece material. It

Nihat Tosun; Can Cogun

2003-01-01

318

Molecular-scale metal wires  

Microsoft Academic Search

We introduce a novel technique employing material deposition into nanometer-scale stencils for the fabrication of continuous wires with precisely controlled widths below 10nm. These molecular-scale metallic structures allow the examination of localization and conductance fluctuations at new length and temperature scales. This study reports measurements of continuous AuPd alloy wires with diameters as small as 3nm and lengths greater than

D. Natelson; R. L. Willett; K. W. West; L. N. Pfeiffer

2000-01-01

319

Silicon Ingot Wire Cutting Animation  

NSDL National Science Digital Library

This Quicktime animation is of a single wire slicing the silicon ingot into thin wafers. By using a thinner wire, and by cutting all wafers at that same time, this minimizes material loss. This animation is the third in a series showing silicon wafer production process after it has been ground to the correct diameter.The previous animation showing silicon ingot rod grinding can be seen here.The next animation in this sequence about silicon wafer lapping can be seen here.

2009-07-30

320

Purcell effect in wire metamaterials  

NASA Astrophysics Data System (ADS)

We study theoretically the enhancement of spontaneous emission in wire metamaterials. We analyze the dependence of the Purcell factor on the wire dielectric constant for both electric and magnetic dipole sources and find an optimal value of the dielectric constant for maximizing the Purcell factor for the electric dipole. We obtain analytical expressions for the Purcell factor and also provide estimates for the Purcell factor in realistic structures operating in both microwave and optical spectral ranges.

Poddubny, Alexander N.; Belov, Pavel A.; Kivshar, Yuri S.

2013-01-01

321

Resistivity of inhomogeneous quantum wires.  

SciTech Connect

We study the effect of electron-electron interactions on the transport in an inhomogeneous quantum wire. We show that contrary to the well-known Luttinger liquid result, nonuniform interactions contribute substantially to the resistance of the wire. In the regime of weakly interacting electrons and moderately low temperatures we find a linear in T resistivity induced by the interactions. We then use the bosonization technique to generalize this result to the case of arbitrarily strong interactions.

Rech, J.; Matveev, K. A.; Materials Science Division

2008-02-15

322

A tutorial on flow diagrams: A tool for developing the structure of multicomponent phase diagrams  

Microsoft Academic Search

The tabular form of multiphase equilibria in temperature- or pressure-ordered sequence, often referred to as flow diagrams,\\u000a shows the interrelations that exist among the various types or classes of equilibria in a system. These interrelations establish\\u000a the structures of the various forms of phase diagrams. Flow diagrams have been used to simplify the presentation of complex\\u000a ternary phase diagrams. However,

R. G. Connell

1994-01-01

323

HTS Wire Development Workshop: Proceedings  

SciTech Connect

The 1994 High-Temperature Superconducting Wire Development Workshop was held on February 16--17 at the St. Petersburg Hilton and Towers in St. Petersburg, Florida. The meeting was hosted by Florida Power Corporation and sponsored by the US Department of Energy`s Superconductivity Program for Electric Power Systems. The meeting focused on recent high-temperature superconducting wire development activities in the Department of Energy`s Superconductivity Systems program. The meeting opened with a general discussion on the needs and benefits of superconductivity from a utility perspective, the US global competitiveness position, and an outlook on the overall prospects of wire development. The meeting then focused on four important technology areas: Wire characterization: issues and needs; technology for overcoming barriers: weak links and flux pinning; manufacturing issues for long wire lengths; and physical properties of HTS coils. Following in-depth presentations, working groups were formed in each technology area to discuss the most important current research and development issues. The working groups identified research areas that have the potential for greatly enhancing the wire development effort. These areas are discussed in the summary reports from each of the working groups. This document is a compilation of the workshop proceedings including all general session presentations and summary reports from the working groups.

Not Available

1994-07-01

324

Enhancing wire-composite bond strength of bonded retainers with wire surface treatment  

Microsoft Academic Search

Bonded orthodontic retainers with wires embedded in composite resin are commonly used for orthodontic retention. The purpose of this study was to test, in vitro, various wire surface treatments to determine the optimal method of enhancing the wire-composite bond strength. Coaxial wires and stainless steel wires with different surface treatments were bonded to bovine enamel and then pulled along their

Larry J. Oesterle; W. Craig Shellhart; Stacy Henderson

2001-01-01

325

Demonstration of a backward wave in a single split ring resonator and wire loaded finline  

Microsoft Academic Search

A finline-based left-handed transmission line is presented and analyzed. The transmission line is periodically loaded by single split ring resonators and thin wires in order to synthesize a negative permeability and permittivity propagation medium. The propagation properties are computed by means of full-wave frequency analysis of scattering parameters from which the band diagram is derived. A backward wave behavior is

T. Decoopman; O. Vanbesien; D. Lippens

2004-01-01

326

Event-related potentials when identifying or color-naming threatening schematic stimuli in spider phobic and non-phobic individuals  

Microsoft Academic Search

BACKGROUND: Previous studies revealed increased parietal late positive potentials (LPPs) in response to spider pictures in spider phobic individuals. This study searched for basic features of fear-relevant stimuli by investigating whether schematic spider images are sufficient to evoke differential behavioral as well as differential early and late ERP responses in spider phobic, social phobic (as a clinical control group), and

Iris-Tatjana Kolassa; Frauke Musial; Stephan Kolassa; Wolfgang HR Miltner

2006-01-01

327

Properties of high-strength beryllium wire  

Microsoft Academic Search

1.The ultimate strength of beryllium wire with a purity of 99.96–99.99% is lower than that of wire from commercial beryllium; it increases from 54 to 90 kgf\\/mm2 as the diameter of the wire is reduced from 1.3 to 0.19 mm. The strength of annealed wire is independent of the diameter. The ductility is high for wire of high purity beryllium.2.Mechanical

G. S. Koshkarev; G. E. Pletenetskii; A. I. Pikalov; G. F. Tikhinskii

1980-01-01

328

Calculation of Binary Eutectic Phase Diagrams.  

National Technical Information Service (NTIS)

The phase diagrams of 65 simple binary eutectic phase diagrams are calculated from the properties of the elemental constituents. The liquid phase is assumed to behave as an ideal solution and the terminal solid solution regions were assumed to be ideal an...

J. E. Davison

1969-01-01

329

Building Path Diagrams for Multilevel Models  

ERIC Educational Resources Information Center

|Multilevel models have come to play an increasingly important role in many areas of social science research. However, in contrast to other modeling strategies, there is currently no widely used approach for graphically diagramming multilevel models. Ideally, such diagrams would serve two functions: to provide a formal structure for deriving the…

Curran, Patrick J.; Bauer, Daniel J.

2007-01-01

330

Generic Phase Diagram of Active Polar Films  

Microsoft Academic Search

We study theoretically the phase diagram of compressible active polar gels such as the actin network of eukaryotic cells. Using generalized hydrodynamics equations, we perform a linear stability analysis of the uniform states in the case of an infinite bidimensional active gel to obtain the dynamic phase diagram of active polar films. We predict, in particular, modulated flowing phases and

R. Voituriez; J. F. Joanny; J. Prost

2006-01-01

331

EXTENDING FEATURE DIAGRAMS WITH UML MULTIPLICITIES  

Microsoft Academic Search

Feature diagrams are an important product of domain analysis for product lines or system families, respectively. They describe relations between requirements and distin- guish between common and variable characteristics. Fea- ture diagrams, as part of the feature model, form the basis for configuring the system. Current principles do not sup- ply a complete description of the semantics of relation- ships

Matthias Riebisch; Kai Böllert; Detlef Streitferdt; Ilka Philippow

332

Dynamic Causality Diagram in Fault Diagnosis  

Microsoft Academic Search

In order to overcomes some shortages of Belief Network dynamic causality diagram is put forward. Its knowledge expression, reasoning, probability computing and also the model of causality diagram used for system fault diagnosis, the model constructing method and reasoning algorithm are proposed. At last, an application example in the fault diagnosis of the nuclear power plant is given which shows

Qingsi Shi; Xinyuan Liang

2009-01-01

333

Influence diagram based on rough set theory  

Microsoft Academic Search

In conventional influence diagrams, the numerical models of uncertainty and imprecise knowledge from large-scaled data set is involved in the systems, the suitability of probability distributions is questioned. The influence diagrams model based on rough sets are proposed in this paper. In the framework, the causal relationships among the nodes and the decision rules are expressed with rough set theory.

Yueling Zhao; Hui Jin; Lihong Wang; Shuang Wang

2010-01-01

334

Diagrams based on structural object perception  

Microsoft Academic Search

Most diagrams, particularly those used in software engineering, are line drawings consisting of nodes drawn as rectangles or circles, and edges drawn as lines linking them. In the present paper we review some of the literature on human perception to develop guidelines for effective diagram drawing. Particular attention is paid to structural object recognition theory. According to this theory as

Pourang Irani; Colin Ware

2000-01-01

335

Hasse Diagram Generators and Petri Nets  

Microsoft Academic Search

In (LJ06) Lorenz and Juhas raised the question of whether there exists a suitable formalism for the representation of infinite families of partial orders generated by Petri nets. Restricting ourselves to bounded p\\/t-nets, we propose Hasse diagram generators as an answer. We show that Hasse diagram generators are expressive enough to represent the partial order lan- guage of any bounded

Mateus De Oliveira Oliveira

2009-01-01

336

Fibonacci numbers when counting chord diagrams  

Microsoft Academic Search

1. Introduction. The combinatorics of drawing some chords in some circles arises in a section of knot theory called invariants of finite-type. We will see that the Fibonacci numbers are useful for counting certain forms of these chord diagrams. We also prove that most of the chord diagrams are null. 2. Definitions We begin with a vector space of chord

Jane Kraemer

337

Voronoi diagrams based on convex distance functions  

Microsoft Academic Search

We present an “expanding waves” view of Voronoi diagrams that allows such diagrams to be defined for very general metrics and for distance measures that do not qualify as metrics. If a pebble is dropped into a still pond, circular waves move out from the point of impact. If n pebbles are dropped simultaneously, the places where wave fronts meet

L. Paul Chew

1985-01-01

338

Vesicle deformation by microtubules: A phase diagram  

NASA Astrophysics Data System (ADS)

The experimental investigation of vesicles deformed by the growth of encapsulated microtubules shows that the axisymmetric morphologies can be classified into ovals, lemons, ?, cherries, dumbbells, and pearls. A geometrical phase diagram is established. Numerical minimization of the elastic energy of the membrane reproduces satisfactorily well the observed morphologies and the corresponding phase diagram.

Emsellem, Virginie; Cardoso, Olivier; Tabeling, Patrick

1998-10-01

339

Diagrams and Descriptions in Acquiring Complex Systems  

Microsoft Academic Search

Complex systems such as a car brake, circulatory system, or legislative system can be c onveyed by language or diagrams. Such systems can be presented from structural or functional perspectives. In three e xperiments, we examine c ommunicating structure a nd function of mechanical systems (bike pump, car brake, pulley system) by text and diagrams in relation to mechanical ability.

Julie Heiser; Barbara Tversky

340

THE QCD PHASE DIAGRAM AT FINITE DENSITY.  

SciTech Connect

We study the density of states method to explore the phase diagram of the chiral transition on the temperature and quark chemical potential plane. Four quark flavours are used in the analysis. Though the method is quite expensive small lattices show an indication for a triple-point connecting three different phases on the phase diagram.

SCHMIDT, C.; FODOR, Z.; KATZ, S.

2005-07-25

341

Topology of ternary VLE diagrams: Elementary cells  

Microsoft Academic Search

The classification of ternary vapor-liquid equilibrium (VLE) diagrams is a key to simple azeotropic dis- tillation analysis. We find that all ternary mixtures so far reported occurring in nature can be qualitatively represented by a combination of only four elementary cells. This greatly reduces the number of VLE diagram structures that need to be analyzed in order to reveal the

E. K. Hilmen; V. N. Kiva; S. Skogestad

2002-01-01

342

Semantic and Visual Encoding of Diagrams  

Microsoft Academic Search

Constructed geometric diagrams capture a dynamic relationship between text and image that played a central role in ancient science and math- ematics. Euclid, Theodosius, Ptolemy, Archimedes and others constructed diagrams to geometrically model optics, astronomy, cartography, and hydro- statics. Each derived geometric properties from their models and interpreted their results with respect to the model's underlying semantics. Although dia- gram

Gabriel A. Weaver

343

Qualitative Motion Reasoning Based on Voronoi Diagram  

Microsoft Academic Search

Qualitative motion reasoning is an important approach to spatial commonsense reasoning. In this paper, we propose a qualitative motion reasoning method based on Voronoi diagrams. The method adopts the vicinity relationship to represent qualitative position and qualitative path. Specifically, the qualitative position is represented by the edges of the Voronoi diagram region the moving point falls in, and the qualitative

Xiaodong Wang; Shizhong Liao

2009-01-01

344

Word Extraction Using Area Voronoi Diagram  

Microsoft Academic Search

A method of word extraction based on the area Voronoi diagram is presented in this paper. Firstly, connected components are generated from the input image. Secondly, noise removal is performed including a special symbol detection technique to find some types of special symbols lying between words. Thirdly, base on the area Voronoi diagram, we select appropriate Voronoi edges which separate

Zhe Wang; Yue Lu; Chew Lim Tan

2003-01-01

345

Voronoi diagram computations for planar NURBS curves  

Microsoft Academic Search

We present robust and e-cient algorithms for computing Voronoi diagrams of planar freeform curves. Boundaries of the Voronoi diagram consist of portions of the bisec- tor curves between pairs of planar curves. Our scheme is based on computing critical structures of the Voronoi dia- grams, such as self-intersections and junction points of bi- sector curves. Since the geometric objects we

Joon-kyung Seong; Elaine Cohen; Gershon Elber

2008-01-01

346

Free-Body Diagrams: Necessary or Sufficient?  

NSDL National Science Digital Library

The Rutgers PAER group is working to help students develop various scientific abilities. One of the abilities is to create, understand and learn to use for qualitative reasoning and problem solving different representations of physical processes such as pictorial representations, motion diagrams, free-body diagrams, and energy bar charts. Physics education literature indicates that using multiple representations is beneficial for student understanding of physics ideas and for problem solving. We developed a special approach to construct and utilize free-body diagrams for representing physical phenomena and for problem solving. We will examine whether students draw free-body diagrams in solving problems when they know they will not receive credit for it; the consistency of their use in different conceptual areas; and if students who use free-body diagrams while solving problems in different areas of physics are more successful then those who do not.

Rosengrant, David; Van Heuvelen, A.; Etkina, Eugenia

2009-11-30

347

Pathological considerations in the treatment of Parkinson's disease: More than just a wiring diagram  

Microsoft Academic Search

Parkinson's disease (PD) represents a common but challenging condition in which an increasing number of therapeutic options have evolved over the course of the last 50 years. The introduction of dopaminergic therapies has dramatically improved outcomes but life expectancies remain significantly curtailed. Currently, all available treatment options are directed towards the amelioration of symptoms. However, it is hoped that a

Carrie Brienne Hurelbrink; Simon John Geoffrey Lewis

2011-01-01

348

Pathological considerations in the treatment of Parkinson's disease: more than just a wiring diagram.  

PubMed

Parkinson's disease (PD) represents a common but challenging condition in which an increasing number of therapeutic options have evolved over the course of the last 50 years. The introduction of dopaminergic therapies has dramatically improved outcomes but life expectancies remain significantly curtailed. Currently, all available treatment options are directed towards the amelioration of symptoms. However, it is hoped that a greater understanding of the distinctive pathology underlying PD might offer some novel therapeutic approaches. The identification of degeneration within the nigrostriatal tract as the most prominent pathological process in PD has led to the development of a number of therapies. However, despite initially good symptomatic control it has become clear that the longer-term use of these medications is associated with a number of debilitating motor complications. The management of these drug-related issues has necessitated a further tier of therapeutic options based largely on a greater understanding of the basal ganglia circuitry involved. Indeed, surgical interventions targeting these neural circuits have provided increased control of motor symptoms in patients with advanced disease, however, such techniques still fail to slow or reverse the disease. To this end, a number of novel approaches focussed on restoration or repair of the diseased brain have received increasing attention. Nevertheless, there are multiple symptoms that are unresponsive to any of these therapies, highlighting the involvement of other neurotransmitter systems and the complexities of the disease beyond the basal ganglia circuitry. An appreciation of the ongoing neurodegenerative processes at the core of PD and the burden of disease associated with them, emphasises the need for increased research into more effective and comprehensive treatment methodologies. PMID:20828923

Hurelbrink, Carrie Brienne; Lewis, Simon John Geoffrey

2010-09-09

349

A comprehensive wiring diagram of the protocerebral bridge for visual information processing in the Drosophila brain.  

PubMed

How the brain perceives sensory information and generates meaningful behavior depends critically on its underlying circuitry. The protocerebral bridge (PB) is a major part of the insect central complex (CX), a premotor center that may be analogous to the human basal ganglia. Here, by deconstructing hundreds of PB single neurons and reconstructing them into a common three-dimensional framework, we have constructed a comprehensive map of PB circuits with labeled polarity and predicted directions of information flow. Our analysis reveals a highly ordered information processing system that involves directed information flow among CX subunits through 194 distinct PB neuron types. Circuitry properties such as mirroring, convergence, divergence, tiling, reverberation, and parallel signal propagation were observed; their functional and evolutional significance is discussed. This layout of PB neuronal circuitry may provide guidelines for further investigations on transformation of sensory (e.g., visual) input into locomotor commands in fly brains. PMID:23707064

Lin, Chih-Yung; Chuang, Chao-Chun; Hua, Tzu-En; Chen, Chun-Chao; Dickson, Barry J; Greenspan, Ralph J; Chiang, Ann-Shyn

2013-05-23

350

Nano-Resolution X-ray Tomography for Deciphering Wiring Diagram of Mammalian Brain  

Microsoft Academic Search

Neural circuits in the central nervous system are the substrate of various high-order brain functions. However, little is known about the mechanisms underlying neuronal information processing in the brain. Anatomical and functional graph structures of neural networks with actual connections will provide us with perspectives to elucidate the brain complexity. Here, we aim to develop a three-dimensional mouse brain atlas

H. Mizutani; H. Sagara; A. Takeuchi; T. Ohigashi; W. Yashiro; K. Uesugi; Y. Suzuki; A. Momose; T. Takagi

2011-01-01

351

Biological processes, properties and molecular wiring diagrams of candidate low-penetrance breast cancer susceptibility genes  

Microsoft Academic Search

BACKGROUND: Recent advances in whole-genome association studies (WGASs) for human cancer risk are beginning to provide the part lists of low-penetrance susceptibility genes. However, statistical analysis in these studies is complicated by the vast number of genetic variants examined and the weak effects observed, as a result of which constraints must be incorporated into the study design and analytical approach.

Núria Bonifaci; Antoni Berenguer; Javier Díez; Oscar Reina; Ignacio Medina; Joaquín Dopazo; Víctor Moreno; Miguel Angel Pujana

2008-01-01

352

Structural and functional allostery wiring diagrams in GroEL/GroES  

NASA Astrophysics Data System (ADS)

Repeated cycling between distinct allosteric states is required for the functions of numerous biological nanomachines. Determining the specific residues that are responsible for transmitting allosteric signals is needed to understand their operation. Using structural perturbation analysis and evolutionary correlations of mutations of residues, we determine networks of key residues in molecular chaperonin GroEL and its cochaperonin GroES. GroEL is a molecular machine that rescues aggregation-prone misfolded proteins. Its functional cycle consists of a series of large-scale allosteric transitions between the T, R, R' and R'' states. The corresponding structural rearrangements facilitate substrate protein capture, refolding, and release. The networks of residues we find provide a microscopic foundation for the cooperativity of the allosteric transitions and a linkage between substrate protein binding and ATPase activity of GroEL.

Tehver, Riina; Chen, Jie; Thirumalai, D.

2009-03-01

353

CUDD: CU Decision Diagram Package Release 2.2.0  

Microsoft Academic Search

The CUDD package provides functions to manipulate Binary Decision Diagrams (BDDs) [5,3], Algebraic Decision Diagrams (ADDs) [1], and Zero suppressed Decision Diagrams (ZDDs) [12]. BDDs are used to represent switch functions

Fabio Somenzi

1998-01-01

354

Physics Classroom: Drawing Free-Body Diagrams  

NSDL National Science Digital Library

This tutorial explains how free body diagrams are used in solving problems involving Newton's Second Law. This tutorials demonstrates how to draw free body diagrams, what the diagram means to Physics, and includes practice problems for the student. This tutorial also includes other tutorials, animations, and student activities in other concepts of Physics. The Physics Classroom is a set of resources created for learners and teachers of high school physics. It includes comprehensive tutorials, problem sets with solutions, extra help for struggling students, Shockwave animations, multimedia learning modules, labs, and photo gallery.

Henderson, Tom

2011-10-03

355

Phase diagrams of self-organizing maps  

NASA Astrophysics Data System (ADS)

We present a method which allows the analytic determination of phase diagrams in the self-organizing map, a model for the formation of topographic projection patterns in the brain and in signal processing applications. The method only requires an ansatz for the tesselation of the data space induced by the map, not for the explicit state of the map. We analytically obtain phase diagrams for various examples, including models for the development of orientation and ocular-dominance maps. The latter phase diagram exhibits transitions to broadening ocular-dominance patterns as observed in a recent experiment.

Bauer, H.-U.; Riesenhuber, M.; Geisel, T.

1996-09-01

356

Schematic model for {rho}-a{sub 1} mixing at finite density and in-medium effective Lagrangian  

SciTech Connect

Based on schematic two-level models extended to a{sub 1}-meson degrees of freedom, we investigate possible mechanisms of chiral restoration in the vector-axial-vector channels in cold nuclear matter. In the first part of this article we employ the massive Yang-Mills framework to construct an effective chiral Lagrangian based on low-energy mesonic modes at finite density. The latter are identified through nuclear collective excitations of ''meson''-sobar type such as {pi}{r_reversible}[{delta}(1232)N{sup -1}]{identical_to}{pi}, {rho}{r_reversible}[N{sup *}(1520)N{sup -1}]{identical_to}{rho}, etc. In a mean-field type treatment the in-medium gauge coupling g, the (axial-)vector meson masses and f{sub {pi}} are found to decrease with density indicating the approach towards chiral restoration in the language of in-medium effective fields. In the second part of our analysis we evaluate the (first) in-medium Weinberg sum rule which relates vector and axial-vector correlators to the pion decay constant. Using in-medium {rho}/a{sub 1} spectral functions (computed in the two-level model) also leads to a substantial reduction of the pion decay constant with increasing density. (c) 2000 The American Physical Society.

Kim, Youngman [Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800 (United States); Rapp, R. [Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800 (United States); Brown, G. E. [Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800 (United States); Rho, Mannque [Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800 (United States)

2000-07-01

357

An Improved Mnemonic Diagram for Thermodynamic Relationships.  

ERIC Educational Resources Information Center

|Considers pressure, volume, entropy, temperature, Helmholtz free energy, Gibbs free energy, enthalpy, and internal energy. Suggests the mnemonic diagram is for use with simple systems that are defined as macroscopically homogeneous, isotropic, uncharged, and chemically inert. (MVL)|

Rodriguez, Joaquin; Brainard, Alan J.

1989-01-01

358

ConcepTest: Relative Time Diagram #3  

NSDL National Science Digital Library

Match the features in the relative time diagram below with the events described in the short sentence. Assume all rocks are sedimentary unless otherwise indicated. Which unit is composed of granite and older than ...

359

ConcepTest: Relative Time Diagram #4  

NSDL National Science Digital Library

Match the features in the relative time diagram below with the events described in the short sentence. Assume all rocks are sedimentary unless otherwise indicated. Which sedimentary unit did not experience contact ...

360

ConcepTest: Relative Time Diagram #2  

NSDL National Science Digital Library

Match the features in the relative time diagram below with the events described in the short sentences. Assume all rocks are sedimentary unless otherwise indicated. Which unit was formed before A but after E? a. C ...

361

ConcepTest: Relative Time Diagram #1  

NSDL National Science Digital Library

Match the features in the relative time diagram below with the events described in the short sentence. Assume all rocks are sedimentary unless otherwise indicated. Which is the oldest rock unit? a. A b. B c. C d. D ...

362

Sloan Digital Sky Survey - Hubble Diagram  

NSDL National Science Digital Library

This website, containing information from the Sloan Digital Sky Survey, provides projects and activities for advanced astronomy students. In this particular one, the user retraces Edwin Hubble's steps to discover that the Universe is expanding, by making a Hubble Diagram.

2010-01-07

363

Calculation of the Radar Vertical Coverage Diagram.  

National Technical Information Service (NTIS)

Algorithms are described for the calculation and plotting of radar vertical coverage diagrams. Two contour VCD algorithms are presented, with a brief discussion on the problem of numerical stability, and the effects of ship motion and frequency agility. (...

M. R. Battaglia

1984-01-01

364

Architecture flow diagrams under teamwork reg sign  

SciTech Connect

The Teamwork CASE tool allows Data Flow Diagrams (DFDs) to be maintained for structured analysis. Fermilab has extended teamwork under UNIX{trademark} to permit Hatley and Pirbhai Architecture Flow Diagrams (AFDs) to be associated with DFDs and subsequently maintained. This extension, called TWKAFD, allows a user to open an AFD, graphically edit it, and replace it into a TWKAFD maintained library. Other aspects of Hatley and Pirbhai's methodology are supported. This paper presents a quick tutorial on Architecture Diagrams. It then describes the user's view of TWKAFD, the experience incorporating it into teamwork, and the successes with using the Architecture Diagram methodology along with the shortcomings of using the teamwork/TWKAFD tool. 8 refs.

Nicinski, T.

1992-02-01

365

Ordered Binary Decision Diagrams and Minimal Trellises.  

National Technical Information Service (NTIS)

Ordered binary decision diagrams (OBDDs) are graph based data structures for representing Boolean functions. Minimal trellises are graphical representations of error correcting codes that play a prominent role in coding theory. This paper establishes a cl...

J. Lafferty A. Vardy

1998-01-01

366

Initiation of Explosives by Exploding Wires. IV. Effect of Wire Length on the Initiation of PETN by Exploding Wires.  

National Technical Information Service (NTIS)

The effect of wire length on the initiation of PETN by exploding platinum wires was investigated using a one microfarad capacitor charged to 2000 volts as the energy source. The energy density deposited in the wire was found to increase with decreasing wi...

H. S. Leopold

1964-01-01

367

Azeotropic phase equilibrium diagrams: a survey  

Microsoft Academic Search

An analysis of the structural properties of vapor–liquid equilibrium (VLE) diagrams provides a fundamental understanding of the thermodynamic behavior of azeotropic mixtures upon distillation.In addition to a review of well-known fundamental work on the analysis of VLE diagrams, this survey comprises less-known published results, especially from the Russian literature. Some new results are also presented for the first time.

V. N. Kiva; E. K. Hilmen; S. Skogestad

2003-01-01

368

Interactive Image-Based Exploded View Diagrams  

Microsoft Academic Search

We present a system for creating interactive exploded view diagrams using 2D images as input. This image-based approach enables us to directly support arbitrary rendering styles, eliminates the need for building 3D models, and allows us to leverage the abundance of existing static diagrams of complex objects. We have developed a set of semi-automatic authoring tools for quickly creating layered

Wilmot Li; Maneesh Agrawala; David Salesin

2004-01-01

369

A duality property of planar Feynman diagrams  

NASA Astrophysics Data System (ADS)

It is found that the Fourier-transform of the amplitude of a planar Feynman diagram G can be written as the amplitude of the Feynman diagram G~, where G~ is the dual of G in the sense of graph theory of graph theory, the propagators of G~ being the Fourier-transformed of the ordinary ones. Associé au Centre National de la Recherche Scientifique.

David, F.; Tuan, R. Hong

1985-08-01

370

Fluctuations and the QCD phase diagram  

SciTech Connect

In this contribution the role of quantum fluctuations for the QCD phase diagram is discussed. This concerns in particular the importance of the matter back-reaction to the gluonic sector. The impact of these fluctuations on the location of the confinement/deconfinement and the chiral transition lines as well as their interrelation are investigated. Consequences of our findings for the size of a possible quarkyonic phase and location of a critical endpoint in the phase diagram are drawn.

Schaefer, B.-J., E-mail: bernd-jochen.schaefer@uni-graz.at [Karl-Franzens-Universitaet, Institut fuer Physik (Austria)

2012-06-15

371

Review Azeotropic phase equilibrium diagrams: a survey  

Microsoft Academic Search

An analysis of the structural properties of vapor-liquid equilibrium (VLE) diagrams provides a fundamental understanding of the thermodynamic behavior of azeotropic mixtures upon distillation. In addition to a review of well-known fundamental work on the analysis of VLE diagrams, this survey comprises less-known published results, especially from the Russian literature. Some new results are also presented for the 6rst time.

V. N. Kiva; E. K. Hilmen; S. Skogestad

372

Automated Theorem Proving in Euler Diagram Systems  

Microsoft Academic Search

Diagrammatic reasoning has the potential to be important in numerous application areas. This paper focuses on the simple,\\u000a but widely used, Euler diagrams that form the basis of many more expressive logics. We have implemented a diagrammatic theorem\\u000a prover, called Edith, which has access to four sound and complete sets of reasoning rules for Euler diagrams. Furthermore,\\u000a for each rule

Gem Stapleton; Judith Masthoff; Jean Flower; Andrew Fish

2007-01-01

373

Assessing-to-Learn Physics: Strobe Diagram  

NSDL National Science Digital Library

This web page contains a concept question for introductory physics on the use of strobe diagrams to demonstrate acceleration. Given four different diagrams, users must decide which objects are accelerating. This item can be used as a "Question of The Day" or with an electronic classroom response system (Clickers). Background information and tips to elicit critical thinking are also provided. This item is part of a larger library of similar questions, which may be searched by grade level and topic.

2008-11-18

374

Algebraic decision diagrams and their applications  

Microsoft Academic Search

In this paper we present theory and experiments on the AlgebraicDecision Diagrams (ADD's). These diagrams extend BDD'sby allowing values from an arbitrary finite domain to be associatedwith the terminal nodes. We present a treatment foundedin boolean algebras and discuss algorithms and results in applicationslike matrix multiplication and shortest path algorithms.Furthermore, we outline possible applications of ADD's to logicsynthesis, formal verification,

R. Iris Bahar; Erica A. Frohm; Charles M. Gaona; Gary D. Hachtel; Enrico Macii; Abelardo Pardo; Fabio Somenzi

1993-01-01

375

Generalized Local Voronoi Diagram of Visible Region  

Microsoft Academic Search

A circular robot in unknown environment, populated by non-overlapping obstacles is considered. The robot is equipped with a discrete scanner e.g. laser range scanner. We present a method for local construction of a one-dimensional structure, similar to the generalized Voronoi diagram. We call this structure a generalized local Voronoi diagram (GLVD). GLVD is constructed from scan points of the visible

Rajko Mahkovic; Tomaz Slivnik

1998-01-01

376

A Theoretical Study of Parallel Voronoi Diagram  

Microsoft Academic Search

Abstractó In this paper, we concentrate on the problem of computing,a Voronoi diagram,using Hypercube,model of computation. The main,contribution of this work is the O(log, n) parallel algorithm for computing,Voronoi diagram on the Euclidean plane. Our technique parallelizes the wellknown,seemingly,inherent sequential technique of Shamos and Hoey, and makes use of a number of special properties of the dividing polygonal chain and

Rashid Muhammad

2006-01-01

377

Shock Pressure Determination in Detonator Wires.  

National Technical Information Service (NTIS)

High-resolution microstreak photographs were used to record shock waves from water-immersed, exploding detonator wires. Shock velocities were read directly from the photographs, and pressures were computer from known Hugoniot data. Wires were gold or alum...

A. M. Frank G. R. Gathers

1989-01-01

378

Investigation of Helicopter Wire Strike Protection Concepts.  

National Technical Information Service (NTIS)

In-flight wire strikes pose a serious threat to low-level helicopter operations. Tests were conducted to determine the suitability for U. S. Army helicopter applications of the Canadian Wire Strike Protection System (WSPS), developed by Bristol Aerospace ...

L. T. Burrows

1980-01-01

379

Nickel Contaminated Titanium Weld Wire Study.  

National Technical Information Service (NTIS)

Attachment of thermocouples to fuel rod welding problems at Exxon Nuclear Company and INEL prompted an investigation study of the titanium filler wire material. It was found that the titanium filler wire was contaminated with nickel which was jacketed on ...

G. R. Coffin R. L. Sumstine

1979-01-01

380

49 CFR 236.838 - Wire, shunt.  

Code of Federal Regulations, 2011 CFR

...INSTRUCTIONS GOVERNING THE INSTALLATION, INSPECTION, MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.838 Wire, shunt. A wire forming part of a shunt...

2011-10-01

381

46 CFR 111.60-11 - Wire.  

Code of Federal Regulations, 2012 CFR

...60-11 Section 111.60-11 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) ELECTRICAL ENGINEERING ELECTRIC SYSTEMS-GENERAL REQUIREMENTS Wiring Materials and Methods § 111.60-11 Wire....

2012-10-01

382

Wire Capture Programs for Macintosh and IBM.  

ERIC Educational Resources Information Center

Discusses wire capture programs (computer programs which gather and process wire services such as the Associated Press or United Press) for computer labs in journalism departments. Describes details of such programs for Macintosh, IBM, and IBM clones. (SR)

Wiley, Gale

1989-01-01

383

Process for manufacturing stranded copper wire  

US Patent & Trademark Office Database

Oxidation of stranded copper wire during high temperature coating with non-melt-fabricable tetrafluoroethylene polymer is substantially prevented by subjecting the wire to a nonoxidizing atmosphere during heating immediately prior to and during coating.

Ross; John A. (Wallingford, PA)

1981-11-10

384

Electrical wire insulation and electromagnetic coil  

DOEpatents

An electromagnetic coil for high temperature and high radiation application in which glass is used to insulate the electrical wire. A process for applying the insulation to the wire is disclosed which results in improved insulation properties.

Bich, George J. (Penn Hills, PA); Gupta, Tapan K. (Monroeville, PA)

1984-01-01

385

The Isvr Constant Temperature Hot Wire Anemometer.  

National Technical Information Service (NTIS)

The principles of hot wire anemometer operation are summarized. The design, specifications, and applications for the constant temperature hot wire and hot film anemometer system are discussed. Information is provided on probe construction with selected re...

P. O. A. L. Davies J. Mason

1974-01-01

386

Printed Wiring Assembly and Interconnection Reliability.  

National Technical Information Service (NTIS)

This report presents reliability prediction models for printed wiring assemblies, solderless wrap assemblies, wrapped and soldered assemblies, and discrete wiring assemblies w/electroless deposited PTH for inclusion in MIL-HDBK-217. Collected field failur...

D. W. Coit

1981-01-01

387

30 CFR 57.12047 - Guy wires.  

Code of Federal Regulations, 2013 CFR

...Guy wires. Guy wires of poles supporting high-voltage transmission lines shall meet the requirements for grounding or insulator protection of the National Electrical Safety Code, part 2, entitled âSafety Rules for the Installation and...

2013-07-01

388

30 CFR 56.12047 - Guy wires.  

Code of Federal Regulations, 2013 CFR

...Guy wires. Guy wires of poles supporting high-voltage transmission lines shall meet the requirements for grounding or insulator protection of the National Electrical Safety Code, part 2, entitled âSafety Rules for the Installation and...

2013-07-01

389

Wire Assembly for Electrically Conductive Circuits.  

National Technical Information Service (NTIS)

A wire assembly for electrically conductive circuits, the assembly comprising a circuit conductor wire having a coating of insulative material thereon, a shielding foil wrapped at least partially around the coating and having a leg portion extending outwa...

W. T. Schneider

1992-01-01

390

Transparency in nanophotonic quantum wires  

NASA Astrophysics Data System (ADS)

We have studied the quantum optics of a photonic quantum nanowire doped with an ensemble of three-level nanoparticles. The wire is made from two photonic crystals A and B. Crystal A is embedded within crystal B and acts as a photonic nanowire. It is considered that the conduction band of crystal A lies below that of crystal B. As a result, photons are confined in crystal A and are reflected from crystal B. The bound states of the confined photons are calculated using the transfer matrix method. It is found that the number of bound states in the wire depends on the size of the wire and the energy difference between the conduction band extrema of crystals A and B. The absorption coefficient of the system has also been calculated using the Schrödinger equation method. It is considered that the nanoparticles interact with the photonic bound states. Numerical simulations show that when one of the resonance energies lies near the bound state, the system becomes transparent. However, when the resonance energy lies away from the bound state the crystal reverts to an absorbing state. Similarly, when the radius of the dielectric spheres is changed the location of the transparency peak is shifted. This means that the present system can be switched between two states by changing the size of the wire and the transition energy. These findings can be used to make new types of optical devices.

Singh, Mahi R.

2009-03-01

391

Resistivity of inhomogeneous superconducting wires  

NASA Astrophysics Data System (ADS)

We study the contribution of quantum phase fluctuations in the superconducting order parameter to the low-temperature resistivity ?(T) of a dirty and inhomogeneous superconducting wire. In particular, we account for random spatial fluctuations of arbitrary size in wire thickness. For a typical wire thickness above the critical value for a superconductor-insulator transition, phase-slip processes can be treated perturbatively. We use a memory formalism approach, which underlines the role played by a weak violation of conservation laws in the mechanism for generating finite resistivity. Our calculations yield an expression for ?(T) , which exhibits a smooth crossover from a homogeneous to a “granular” limit upon increase of T , controlled by a “granularity parameter” D characterizing the size of thickness fluctuations. For extremely small D , we recover the power-law dependence ?(T)˜T? obtained by unbinding quantum phase slips. However in the strongly inhomogeneous limit, the exponent ? is modified and the prefactor is exponentially enhanced. We examine the dependence of the exponent ? on an external magnetic field applied parallel to the wire. Finally, we show that the power-law dependence at low T is consistent with a series of experimental data obtained in a variety of long and narrow samples, which earlier studies have attempted to fit by an exponential trial function. The values of ? extracted from the data, and the corresponding field dependence, are consistent with known parameters of the corresponding samples.

Pai, G. Venketeswara; Shimshoni, E.; Andrei, N.

2008-03-01

392

Terminating Wire to Microminiature Connectors.  

National Technical Information Service (NTIS)

The paper contains a discussion of a new technique to simultaneously terminate wires to a whole row of contacts on a microminiature connector. The system, which has been named Solder-Pak, utilizes radiation cross-linked, heat-shrinkable sleeves, each cont...

J. S. Scarborough

1967-01-01

393

Method of Producing Fine Wire.  

National Technical Information Service (NTIS)

Invention consists of a method of obtaining thin wire, for Ex., of the diameter of 0.001 mm, by drawing a bimetallic billet with subsequent scouring of the outer surface which is distinguished by the fact that for the purpose of getting a constant section...

L. A. Lysenko N. S. Agushevich

1964-01-01

394

Fabrication of tungsten wire needles  

SciTech Connect

Fine point needles for field emissoin are conventionally produced by electrolytically or chemically etching tungsten wire. Points formed in this manner have a typical tip radius of about 0.5 microns and a cone angle of some 30 degrees. The construction of needle matrix detector chambers has created a need for tungsten needles whose specifications are: 20 mil tungsten wire, 1.5 inch total length, 3 mm-long taper (resulting in a cone angle of about 5 degrees), and 25 micron-radius point (similar to that found on sewing needles). In the process described here for producing such needles, tungsten wire, immersed in a NaOH solution and in the presence of an electrode, is connected first to an ac voltage and then to a dc supply, to form a taper and a point on the end of the wire immersed in the solution. The process parameters described here are for needles that will meet the above specifications. Possible variations will be discussed under each approprite heading.

Roder, A.

1983-02-01

395

Ultrasonic Calibration Wire Test Phantom  

SciTech Connect

We designed and built a phantom consisting of vertical wires maintained under tension to be used as an ultrasonic test, calibration, and reconstruction object for the Lawrence Livermore National Laboratory annular array scanner. We provide a description of the phantom, present example data sets, preliminary reconstructions, example metadata, and MATLAB codes to read the data.

Lehman, S K; Fisher, K A; Werve, M; Chambers, D H

2004-09-24

396

REACH. Residential Electrical Wiring Units.  

ERIC Educational Resources Information Center

|As a part of the REACH (Refrigeration, Electro-Mechanical, Air-Conditioning, Heating) electromechanical cluster, this student manual contains individualized instructional units in the area of residential electrical wiring. The instructional units focus on grounded outlets, service entrance, and blueprint reading. Each unit follows a typical…

Ansley, Jimmy; Ennis, Mike

397

Wire assembly for electrically conductive circuits  

NASA Astrophysics Data System (ADS)

A wire assembly for electrically conductive circuits is described. The assembly is comprised of a circuit conductor wire having a coating of insulative material thereon, a shielding foil wrapped at least partially around the coating and having a leg portion extending outwardly from the coating, a shield conductor wire fixed to the shielding foil, and an insulative outer layer enclosing the shielding foil and the shield conductor wire.

Schneider, Walter T.

1992-04-01

398

On Wires Holding a Handful of Electrons  

Microsoft Academic Search

When analyzing reliability, wires have in most cases been ignored, with gates (and devices) taking the lion’s share. With\\u000a scaling, this “only computing fails” approach is not going to be accurate enough as communication (wires) will also start to err. Trying to do justice to wires, this paper details a statistical failure analysis of wires following on the few papers

Valeriu Beiu; Walid Ibrahim; Rafic Z. Makki

2009-01-01

399

Study of Holding Power of Wire Rope Clips in a Wire Rope Loop.  

National Technical Information Service (NTIS)

This report presents the results of tests performed on 3/8, 1/2, and 5/8 inch independent wire rope core (IWRC) wire rope, and 3/8, 1/2, and 5/8 inch fiber core wire rope. The test samples consisted of end-over-end wire rope loops held together with vario...

E. Jackson D. Skoneczka

1978-01-01

400

Magnetic Force on a Current-carrying Wire  

NSDL National Science Digital Library

This is an inquiry-based lab for AP or Honors high school physics, designed to let students explore the effect of an external field on a current-carrying wire in that field. Detailed background information and tips for teachers accompany the lesson, along with photos and diagrams of the lab set-up. It is expected that students would have some prior experience with the fundamentals of magnetism but would not have studied the topic prior to the lab. This resource is part of a larger collection of inquiry-based labs developed by the NSF-funded Center for Nanoscale Systems Institute for Physics Teachers. SEE RELATED ITEMS on this page for a link to the full collection.

2007-07-30

401

Developments in the Manufacture of Copper Wire  

Microsoft Academic Search

This paper covers interesting developments in the manufacture of copper wire and contains a description of a copper rod and wire mill designed to meet the new requirements. It also includes a brief survey of the copper rolling and wire drawing art at the time the investigation was started; a summary of tests made in varying the practise in rod

John R. Shea; Samuel McMullan

1927-01-01

402

Home and School Technology: Wired versus Wireless.  

ERIC Educational Resources Information Center

Presents results of informal research on smart homes and appliances, structured home wiring, whole-house audio/video distribution, hybrid cable, and wireless networks. Computer network wiring is tricky to install unless all-in-one jacketed cable is used. Wireless phones help installers avoid pre-wiring problems in homes and schools. (MLH)

Van Horn, Royal

2001-01-01

403

Last Progress in Underwater Electrical Wire Explosion  

Microsoft Academic Search

The results of the investigation of the underwater electrical wire explosions using a high power nanosecond timescale generator are reported. The spectroscopic analysis of the emitted radiation has unveiled no evidence for the formation of shunting plasma channel. The latter appears in vacuum and gas wire explosions and causes to the seizure of energy deposition into an exploding wire material.

Alon Grinenko; Arkady Sayapin; Sergey Efimov; Alexander Fedotov; Yakov E. Krasik

2008-01-01

404

Technology update II: Wire systems diagnostics & prognostics  

Microsoft Academic Search

The Aviation industry is gradually realizing some of the benefits from wire husbandry as they include it in their maintenance programs. Individual operators are also beginning to incorporate both zonal visual inspection procedures and advanced diagnostic tooling practices into their maintenance programs. Visual inspection, although only 25% effective is being used to check for wire contamination, combustibles and wire degradation

Christopher Teal; Bill Larsen

2003-01-01

405

Stress Analysis of Wire Hoist Rope.  

National Technical Information Service (NTIS)

A theoretical analysis is presented for the static and dynamic response of wire rope in deep-shaft mining operations. Expressions for the stresses in the individual wires of complex wire ropes are derived, and specific results for simple strands are prese...

1983-01-01

406

The Early History of Insulated Copper Wire  

Microsoft Academic Search

In the early 1800s galvanometers could be constructed with the fine gauges of silk-covered copper or silver wires produced for decorative purposes, but when Faraday was making his classic electrical experiments in 1831 he needed a sturdier gauge of copper wire. Bare copper wire was available in many diameters for mechanical applications, but coils for electromagnetic investigations had to be

Allan A. Mills

2004-01-01

407

Home and School Technology: Wired versus Wireless.  

ERIC Educational Resources Information Center

|Presents results of informal research on smart homes and appliances, structured home wiring, whole-house audio/video distribution, hybrid cable, and wireless networks. Computer network wiring is tricky to install unless all-in-one jacketed cable is used. Wireless phones help installers avoid pre-wiring problems in homes and schools. (MLH)|

Van Horn, Royal

2001-01-01

408

Fano resonances in nested wire media  

NASA Astrophysics Data System (ADS)

We study the interaction of electromagnetic waves with two nested parallel metallic wire arrays, such that the unit cell of the structure has two inequivalent parallel wires. We develop a formalism to solve scattering problems using effective medium methods and prove that the electromagnetic coupling of the two sets of wires may result in the emergence of sharp Fano resonances.

Fernandes, David E.; Maslovski, Stanislav I.; Hanson, George W.; Silveirinha, Mário G.

2013-07-01

409

Three-Wire Static Strain Gage Apparatus.  

National Technical Information Service (NTIS)

The present invention utilizes a static strain gage which is connected in a three wire-configuration to a Wheatstone bridge to provide a temperature compensated strain output. A three wire switching arrangement is utilized to wire the strain gage in one s...

W. F. Bridges

1982-01-01

410

Locating Hidden Hazards in Electrical Wiring  

Microsoft Academic Search

Hazardous electrical wiring has been identified as an area of critical national and international concern. Faulty and improperly installed electrical wiring is a leading cause of fires in homes and commercial buildings. Wiring is also responsible for numerous problems in consumer product safety, vehicular safety\\/reliability, safety of nuclear facilities, reliability of power distribution systems, reliability of communication systems, and others.

Paul K. Kuhn

2006-01-01

411

Critical current density and microstructural state of an internal tin multifilamentary superconducting wire  

NASA Astrophysics Data System (ADS)

The critical current density (J sub c) of internal tin wires is increased when low-temperature diffusion heat treatments are performed prior to a high temperature reaction. To determine the variation of J sub c with prereaction heat treatments a copper-stabilized IGC internal tin wire with an outside diameter of 0.267mm was studied. The wire has 2 to 2.5 micron diameter filameters, and within the Ta barrier, the area ratio of the copper matrix and Sn core to Nb is about 2.2. Due to the character of the Cu-Sn phase diagram, heat treatments at a series of temperatures below the Nb3Sn reaction temperature affect the local Sn concentration in the matrix about the Nb filaments. The variation in J sub c resulting from these heat treatments is a consequence of the microstructural state of the conductor and the morphology of the Nb3Sn layer produced. The results of this work show that the internal tin and bronze-processed wires have different J sub c (H) characteristics. The two processes have comparable critical currents at high fields, suggesting the same H sub c2, while at low fields the internal tin wire is superior, suggesting a better grain morphology.

Dietderich, D. R.; Glazer, J.; Lea, C.; Hassenzahl, W. V.; Morris, J. W., Jr.

1984-09-01

412

Measurements and simulations of the ablation stage of wire arrays with different initial wire sizes  

SciTech Connect

Comparisons of 20 mm diameter, 300-wire tungsten arrays with different initial wire sizes were made on the 20 MA Sandia Z facility. Radiographic measurements of each wire array, taken at the same point in the current during the wire ablation stage, show systematic differences. A detailed comparison of the radiography and self-emission data with simulations and analytic models suggests that a variation in the mass ablation rate with wire size may be responsible.

Sinars, D.B.; Cuneo, M.E.; Yu, E.P.; Jones, B.; Mehlhorn, T.A.; Porter, J.L.; Wenger, D.F. [Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185-1193 (United States); Lebedev, S.V. [Blackett Laboratory, Imperial College, London SW7 2BW (United Kingdom); Cochrane, K.R. [Ktech Corporation, 1300 Eubank Boulevard SE, Albuquerque, New Mexico 87123 (United States); MacFarlane, J.J. [Prism Computational Sciences, Madison, Wisconsin 53711 (United States)

2006-04-15

413

Bond reliability under humid environment for coated copper wire and bare copper wire  

Microsoft Academic Search

There is growing interest in Cu wire bonding for LSI interconnection due to cost savings and better electrical and mechanical properties. Conventional bare Cu bonding wires, in general, are severely limited in their use compared to Au wires. A coated Cu bonding wire (EX1) has been developed for LSI application. EX1 is a Pd-coated Cu wire to enhance the bondability.Bond

Tomohiro Uno

2011-01-01

414

Extraction, layout analysis and classification of diagrams in PDF documents  

Microsoft Academic Search

Diagrams are a critical part of virtually all scientific and technical documents. Analyzing diagrams will be important for building comprehensive document retrieval systems. This paper focuses on the extraction and classification of diagrams from PDF documents. We study diagrams available in vector (not raster) format in online research papers. PDF files are parsed and their vector graphics components installed in

Robert P. Futrelle; Mingyan Shao; Chris Cieslik; Andrea Elaina Grimes

2003-01-01

415

Practical guidelines for the readability of IT-architecture diagrams  

Microsoft Academic Search

This paper presents the work done to establish guidelines for the creation of readable IT-architecture diagrams and gives some examples of guidelines and some examples of improved diagrams. These guidelines are meant to assist practicing IT-architects in preparing the diagrams to communicate their architectures to the various stakeholders. Diagramming has always been important in information technology (IT), but the recent

Henk Koning; Claire Dormann; Hans van Vliet

2002-01-01

416

Science Visual Literacy: Learners' Perceptions and Knowledge of Diagrams  

ERIC Educational Resources Information Center

Constructing meaning from science texts relies not only on comprehending the words but also the diagrams and other graphics. The goal of this study was to explore elementary students' perceptions of science diagrams and their skills related to diagram interpretation. 30 students, ranging from second grade through middle school, completed a diagram

McTigue, Erin M.; Flowers, Amanda C.

2011-01-01

417

Fishbone Diagrams: Organize Reading Content with a "Bare Bones" Strategy  

ERIC Educational Resources Information Center

|Fishbone diagrams, also known as Ishikawa diagrams or cause-and-effect diagrams, are one of the many problem-solving tools created by Dr. Kaoru Ishikawa, a University of Tokyo professor. Part of the brilliance of Ishikawa's idea resides in the simplicity and practicality of the diagram's basic model--a fish's skeleton. This article describes how…

Clary, Renee; Wandersee, James

2010-01-01

418

Nesting in Euler Diagrams: syntax, semantics and construction  

Microsoft Academic Search

This paper considers the notion of nesting in Euler diagrams, and how nesting affects the interpretation and construction of such diagrams. After setting up the necessary definitions for concrete Euler diagrams (drawn in the plane) and abstract diagrams (having just formal structure), the notion of nestedness is defined at both concrete and abstract levels. The concept of a dual graph

Jean Flower; John Howse; John Taylor

2004-01-01

419

Detecting Arabic handwritten word baseline using Voronoi Diagram  

Microsoft Academic Search

The purpose of this paper is to present a methodology based on Voronoi diagram for detecting the Arabic handwritten word baseline. In this paper, the definition and background of Voronoi diagram has been explained. A short survey about the application of Voronoi diagram on the language recognition fields also presented. Finally, a method is proposed based on the Voronoi diagram

Atallah AL-Shatnawi; Khairuddin Omar

2009-01-01

420

Wire rope and method of making same  

SciTech Connect

A wire rope, particularly a non-twistable wire rope, wherein an annulus of outer strands surrounds a wire rope center with a central strand and one or more annuli of neighboring strands surrounding the central strand. The wires of the strands in the center do not intersect each other. The entire center or at least some of its strands are densified prior to or during application of the outer strands. Alternatively, or in addition to such densification, at least some strands of the center are assembled of wires having an other than circular outline to thereby reduce the combined cross-sectional area of voids in the center.

Verreet, R.

1984-06-19

421

Evaluating data flow diagrams and class diagrams in usability laboratory experiments (CADPRO Pilot #2)  

Microsoft Academic Search

This paper reports on a second pilot experiment for the CADPRO project taking into account a number of the recommendations arising from the first pilot. Three subjects produced data flow diagrams and class diagrams in a usability laboratory setting. Characteristics of subjects' solutions are discussed and the usefulness of profiles of product delivery and constraint activations against time is determined.

SHINGO TAKADA; LOUISE SCOTT; ANDY BROOKS

422

Simple yet complete heuristics for transforming data flow diagrams into Booch style diagrams  

Microsoft Academic Search

This paper presents some simple heuristics for transforming a requirements specification (for a non-real time application) expressed as a data flow diagram (DFD) into a design architecture expressed as an extended Booch diagram. This architecture provides a starting point for subsequent design refinement. The transformations based on simple heuristics were implemented in a research tool. We show that simple things

Swathi C. Solsi; Edward L. Jones

1991-01-01

423

SpaceWire Data Handling Demonstration System  

NASA Astrophysics Data System (ADS)

The SpaceWire standard was published in 2003 with the aim of providing a standard for onboard communications, defining the physical and data link layers of an interconnection, in order to improve reusability, reliability and to reduce the cost of mission development. The many benefits which it provides mean that it has already been used in a number of missions, both in Europe and throughout the world. Recent work by the SpaceWire community has included the development of higher level protocols for SpaceWire, such as the Remote Memory Access Protocol (RMAP) which can be used for many purposes, including the configuration of SpaceWire devices. Although SpaceWire has become very popular, the various ways in which it can be used are still being discovered, as are the most efficient ways to use it. At the same time, some in the space industry are not even aware of SpaceWire's existence. This paper describes the SpaceWire Data Handling Demonstration System that has been developed by the University of Dundee. This system simulates an onboard data handling network based on SpaceWire. It uses RMAP for all communication, and so demonstrates how SpaceWire and standardised higher level protocols can be used onboard a spacecraft. The system is not only a good advert for those who are unfamiliar with the benefits of SpaceWire, it is also a useful tool for those using SpaceWire to test ideas.

Mills, S.; Parkes, S. M.; O'Gribin, N.

2007-08-01

424

Dynamic tactile diagram simplification on refreshable displays.  

PubMed

The increasing use of visual diagrams in educational and work environments, and even our daily lives, has created obstacles for individuals who are blind or visually impaired to independently access the information they represent. Although physical tactile pictures can be created to convey the visual information, it is typically a slow, cumbersome, and costly process. Refreshable haptic displays, which interact with computers, promise to make this access quicker, easier, and cheaper. One important aspect in converting visual to tactile diagrams is to simplify the diagram as otherwise it can be too difficult to interpret with touch. Enabling this to be under user control in an interactive environment, such as with refreshable displays, could allow users to avoid being overwhelmed by the diagrams at any instant in time while still retaining access to all information in "storage". Through this article the authors investigate whether two types of diagram simplification--boundary simplification and contextual simplification--showed potential utility in an interactive environment. Boundary simplification was found to be significantly helpful in answering general questions about borders on a geographic map, and contextual simplification was helpful in answering relational questions, as compared to using the original map unchanged. PMID:23527429

Rastogi, Ravi; Pawluk, Dianne T V

2013-01-01

425

NASA wiring for space applications program  

NASA Astrophysics Data System (ADS)

An overview of the NASA Wiring for Space Applications Program and its relationship to NASA's space technology enterprise is given in viewgraph format. The mission of the space technology enterprise is to pioneer, with industry, the development and use of space technology to secure national economic competitiveness, promote industrial growth, and to support space missions. The objectives of the NASA Wiring for Space Applications Program is to improve the safety, performance, and reliability of wiring systems for space applications and to develop improved wiring technologies for NASA flight programs and commercial applications. Wiring system failures in space and commercial applications have shown the need for arc track resistant wiring constructions. A matrix of tests performed versus wiring constructions is presented. Preliminary data indicate the performance of the Tensolite and Filotex hybrid constructions are the best of the various candidates.

Schulze, Norman

1995-11-01

426

Interpretation of UML Sequence Diagrams as Causality Flows  

Microsoft Academic Search

\\u000a UML Interaction diagrams (Sequence diagrams (SD), Collaboration diagrams or Communication diagrams) lack a formal semantics;\\u000a they include some amount of ambiguity so that formal techniques cannot be applied e.g. for automatically deriving the behavior\\u000a of the objects (as Statecharts or State-Transition diagrams) from the SD where they appear. To overcome this situation, this\\u000a paper first analyses and simplifies the semantic

Christophe Sibertin-blanc; Omar Tahir; Janette Cardoso

2005-01-01

427

Solving multiloop Feynman diagrams using light-front coordinates  

NASA Astrophysics Data System (ADS)

We determine the numerical values of scalar multiloop two-vertex Feynman diagrams, the generalized sunset diagrams, or watermelon diagrams, by integrating all but the longitudinal momenta analytically. For the longitudinal momenta we introduce one collective coordinate, which allows us to determine the numerical value of the diagram efficiently and to an arbitrary accuracy. The imaginary part and the threshold behavior of the diagram is also handled within this framework.

Ligterink, N. E.

2000-05-01

428

The transmaxillary K-wire.  

PubMed Central

The transmaxillary K-wire is a simple, fast, safe, and effective technique for the fixation of unstable tractured malar bones. Combined with other techniques such as interdental fixation it simplifies and provides the fixation of the Le Fort II fracture or osteotomy and certain osteotomies used for facial advancement. The technique of insertion is described and illustrated. Images Fig. 4 Fig. 5 Fig. 6

Silverton, J. S.; Bostwick, J.; Jurkiewicz, M. J.

1978-01-01

429

Silicon Photonic Wire Waveguide Sensors  

Microsoft Academic Search

Silicon photonic wire evanescent field (PWEF) waveguide sensors have a very high intrinsic response to molecular adsorption.\\u000a This response arises from the high refractive index contrast and small size of these waveguides, which in combination cause\\u000a much of the electric field to be localized to a thin layer adjacent to the waveguide surface. We describe the basic theory\\u000a of PWEF

S. Janz; A. Densmore; D.-X. Xu; P. Waldron; J. Lapointe; J. H. Schmid; T. Mischki; G. Lopinski; A. Delâge; R. McKinnon; P. Cheben; B. Lamontagne

2009-01-01

430

Taut Wire Straightedge Reversal Artifact  

Microsoft Academic Search

The design and test of an artifact for the measurement of machine straightness error motion is presented. The artifact is\\u000a specifically designed for measuring straightness on machines equipped with video probe sensors. The artifact utilizes a taut\\u000a wire and can be easily measured using reversal, or error separation, techniques. The reversal mathematics is presented along\\u000a with an analysis of the

James G. Salsbury; Robert J. Hocken

431

Wire diameter and length effects on wire sweep performance of multi-tier copper and gold wire bonding in plastic ball grid array packages  

Microsoft Academic Search

As the semiconductor packaging industry continues to lower its manufacturing costs, concerted efforts in the supply chain focusing on using copper (Cu) as wire bond interconnects has intensified to an unprecedented level. In our previous study we showed that Cu wire has significantly higher wire sweep compared to gold (Au) wire after molding. In this study, wire sweep performance was

Serene Teh Seoh Hian; Foong Chee Seng; Teng Seng Kiong; Navas Khan Oratti Kalandar

2011-01-01

432

The Butterfly diagram leopard skin pattern  

NASA Astrophysics Data System (ADS)

A time-latitude diagram where spotgroups are given proportional relevance to their area is presented. The diagram reveals that the spotted area distribution is higly dishomogeneous, most of it being concentrated in few, small portions (``knots'') of the Butterfly Diagram; because of this structure, the BD may be properly described as a cluster of knots. The description, assuming that spots scatter around the ``spot mean latitude'' steadily drifting equatorward, is challenged. Indeed, spots cluster around at as many latitudes as knots; a knot may appear at either lower or higher latitudes than previous ones, in a seemingly random way; accordingly, the spot mean latitude abruptly drifts equatorward or even poleward at any knot activation, in spite of any smoothing procedure. Preliminary analyses suggest that the activity splits, in any hemisphere, into two or more distinct ``activity waves'', drifting equatorward at a rate higher than the spot zone as a whole.

Ternullo, Maurizio

2011-08-01

433

Analyzing genomes with cumulative skew diagrams.  

PubMed Central

A novel method of cumulative diagrams shows that the nucleotide composition of a microbial chromosome changes at two points separated by about a half of its length. These points coincide with sites of replication origin and terminus for all bacteria where such sites are known. The leading strand is found to contain more guanine than cytosine residues. This fact is used to predict origin and terminus locations in other bacterial and archaeal genomes. Local changes, visible as diagram distortions, may represent recent genome rearrangements, as demonstrated for two strains of Escherichia coli . Analysis of the diagrams of viral and mitochondrial genomes suggests a link between the base composition bias and the time spent by DNA in a single stranded state during replication.

Grigoriev, A

1998-01-01

434

Generic Phase Diagram of Active Polar Films  

NASA Astrophysics Data System (ADS)

We study theoretically the phase diagram of compressible active polar gels such as the actin network of eukaryotic cells. Using generalized hydrodynamics equations, we perform a linear stability analysis of the uniform states in the case of an infinite bidimensional active gel to obtain the dynamic phase diagram of active polar films. We predict, in particular, modulated flowing phases and a macroscopic phase separation at high activity. This qualitatively accounts for experimental observations of various active systems, such as actomyosin gels, microtubules and kinesins in vitro solutions, or swimming bacterial colonies.

Voituriez, R.; Joanny, J. F.; Prost, J.

2006-01-01

435

Generic phase diagram of active polar films.  

PubMed

We study theoretically the phase diagram of compressible active polar gels such as the actin network of eukaryotic cells. Using generalized hydrodynamics equations, we perform a linear stability analysis of the uniform states in the case of an infinite bidimensional active gel to obtain the dynamic phase diagram of active polar films. We predict, in particular, modulated flowing phases and a macroscopic phase separation at high activity. This qualitatively accounts for experimental observations of various active systems, such as actomyosin gels, microtubules and kinesins in vitro solutions, or swimming bacterial colonies. PMID:16486647

Voituriez, R; Joanny, J F; Prost, J

2006-01-17

436

Phase diagrams of diluted transverse Ising nanowire  

NASA Astrophysics Data System (ADS)

In this paper, the phase diagrams of diluted Ising nanowire consisting of core and surface shell coupling by Jcs exchange interaction are studied using the effective field theory with a probability distribution technique, in the presence of transverse fields in the core and in the surface shell. We find a number of characteristic phenomena. In particular, the effect of concentration c of magnetic atoms, the exchange interaction core/shell, the exchange in surface and the transverse fields in core and in surface shell of phase diagrams are investigated.

Bouhou, S.; Essaoudi, I.; Ainane, A.; Saber, M.; Ahuja, R.; Dujardin, F.

2013-06-01

437

Thermal energy scavenger (rotating wire modules)  

SciTech Connect

A thermal energy scavenger assembly is is described including a plurality of temperature-sensitive wires made of material which exhibits shape memory due to a thermoelastic, martensitic phase transformation. The wires are placed in tension between fixed and movable plates which are, in turn, supported by a pair of wheels which are rotatably supported by a housing for rotation about a central axis. A pair of upper and lower cams are fixed to the housing and cam followers react with the respective cams. Each cam transmits forces through a pair of hydraulic pistons. One of the pistons is connected to a movable plate to which one end of the wires are connected whereby a stress is applied to the wires to strain the wires during a first phase and whereby the cam responds to the unstraining of the wires during a second phase. A housing defines fluid compartments through which hot and cold fluid passes and flows radially through the wires whereby the wires become unstrained and shorten in length when subjected to the hot fluid for causing a reaction between the cam followers and the cams to effect rotation of the wheels about the central axis of the assembly, which rotation of the wheels is extracted through beveled gearing. The wires are grouped into a plurality of independent modules with each module having a movable plate, a fixed plate and the associated hydraulic pistons and cam follower. The hydraulic pistons and cam follower of a module are disposed at ends of the wires opposite from the ends of the wires at which the same components of the next adjacent modules are disposed so that the cam followers of alternate modules react with one of the cams and the remaining cam followers of the remaining modules react with the other cam. There is also included stress limiting means in the form of coil springs associated with alternate ends of the wires for limiting the stress or strain in the wires.

Hochstein, P.A.; Milton, H.W.; Pringle, W.L.

1980-11-04

438

43 CFR 3274.11 - What must I give BLM to approve my commercial use permit application?  

Code of Federal Regulations, 2010 CFR

...and royalty meters; (b) A schematic diagram of the utilization site or...site, give us a generalized schematic diagram of the electrical transmission...and injection well; (e) A schematic diagram of each production and...

2010-10-01

439

43 CFR 3274.11 - What must I give BLM to approve my commercial use permit application?  

Code of Federal Regulations, 2010 CFR

...and royalty meters; (b) A schematic diagram of the utilization site or...site, give us a generalized schematic diagram of the electrical transmission...and injection well; (e) A schematic diagram of each production and...

2009-10-01

440

A Vibrating Wire System For Quadrupole Fiducialization  

SciTech Connect

A vibrating wire system is being developed to fiducialize the quadrupoles between undulator segments in the LCLS. This note provides a detailed analysis of the system. The LCLS will have quadrupoles between the undulator segments to keep the electron beam focused. If the quadrupoles are not centered on the beam axis, the beam will receive transverse kicks, causing it to deviate from the undulator axis. Beam based alignment will be used to move the quadrupoles onto a straight line, but an initial, conventional alignment must place the quadrupole centers on a straight line to 100 {micro}m. In the fiducialization step of the initial alignment, the position of the center of the quadrupole is measured relative to tooling balls on the outside of the quadrupole. The alignment crews then use the tooling balls to place the magnet in the tunnel. The required error on the location of the quadrupole center relative to the tooling balls must be less than 25 {micro}m. In this note, we analyze a system under construction for the quadrupole fiducialization. The system uses the vibrating wire technique to position a wire onto the quadrupole magnetic axis. The wire position is then related to tooling balls using wire position detectors. The tooling balls on the wire position detectors are finally related to tooling balls on the quadrupole to perform the fiducialization. The total 25 {micro}m fiducialization error must be divided between these three steps. The wire must be positioned onto the quadrupole magnetic axis to within 10 {micro}m, the wire position must be measured relative to tooling balls on the wire position detectors to within 15 {micro}m, and tooling balls on the wire position detectors must be related to tooling balls on the quadrupole to within 10 {micro}m. The techniques used in these three steps will be discussed. The note begins by discussing various quadrupole fiducialization techniques used in the past and discusses why the vibrating wire technique is our method of choice. We then give an overview of the measurement system showing how the vibrating wire is positioned onto the quadrupole axis, how the wire position detectors locate the wire relative to tooling balls without touching the wire, and how the tooling ball positions are all measured. The novel feature of this system is the vibrating wire which we discuss in depth. We analyze the wire dynamics and calculate the expected sensitivity of the system. The note should be an aid in debugging the system by providing calculations to compare measurements to.

Wolf, Zachary

2010-12-13

441

Wire ablation dynamics model and its application to imploding wire arrays of different geometries  

NASA Astrophysics Data System (ADS)

The paper presents an extended description of the amplified wire ablation dynamics model (WADM), which accounts in a single simulation for the processes of wire ablation and implosion of a wire array load of arbitrary geometry and wire material composition. To investigate the role of wire ablation effects, the implosions of cylindrical and planar wire array loads at the university based generators Cobra (Cornell University) and Zebra (University of Nevada, Reno) have been analyzed. The analysis of the experimental data shows that the wire mass ablation rate can be described as a function of the current through the wire and some coefficient defined by the wire material properties. The aluminum wires were found to ablate with the highest rate, while the copper ablation is the slowest one. The lower wire ablation rate results in a higher inward velocity of the ablated plasma, a higher rate of the energy coupling with the ablated plasma, and a more significant delay of implosion for a heavy load due to the ablation effects, which manifest the most in a cylindrical array configuration and almost vanish in a single-planar array configuration. The WADM is an efficient tool suited for wire array load design and optimization in wide parameter ranges, including the loads with specific properties needed for the inertial confinement fusion research and laboratory astrophysics experiments. The data output from the WADM simulation can be used to simplify the radiation magnetohydrodynamics modeling of the wire array plasma.

Esaulov, A. A.; Kantsyrev, V. L.; Safronova, A. S.; Velikovich, A. L.; Shrestha, I. K.; Williamson, K. M.; Osborne, G. C.

2012-10-01

442

Enhancing the Expressiveness of Spider Diagram Systems  

Microsoft Academic Search

Many visual languages based on Euler diagrams have emerged for expressing relationships between sets. The ex- pressive power of these languages varies, but the major- ity are monadic and some include equality. Spider dia- grams are one such language, being equivalent in expres- sive power to monadic first order logic with equality. Spi- ders are used to represent the existence

Gem Stapleton; John Howse

2006-01-01

443

Learning from Diagrams: Theoretical and Instructional Considerations.  

National Technical Information Service (NTIS)

The purpose of the eight studies reported in this paper was two-fold: to identify some of the relationships that exist between the unique properties of diagrams and various aspects of cognitive processes and learning, and, subsequently, to derive principl...

W. D. Winn W. G. Holliday

1981-01-01

444

Yttrium. Properties, Phase Diagrams, Industrial Applications.  

National Technical Information Service (NTIS)

The book generalizes available literature data on the preparation and purification of yttrium, and also on its properties, phase diagrams, and the properties of its alloys. It also presents a survey of the most important branches of the application of ytt...

V. F. Terekhova E. M. Savitskii

1970-01-01

445

Identification of complete data flow diagrams  

Microsoft Academic Search

The Structure Design is generated with Data Flow Diagrams (DFD). DFD have been used for more than ten years, and they are still popular. The main drawback of DFD is the lack of mathematical foundation. The great demand for bigger and more sophisticated computer systems makes necessary the formulation of a formal theory for DFD. This theory will provide a

Federico Vazquez

1994-01-01

446

Enhanced Pomeron diagrams: Resummation of unitarity cuts  

SciTech Connect

Unitarity cuts of enhanced Pomeron diagrams are analyzed in the framework of the Reggeon field theory. Assuming the validity of the Abramovskii-Gribov-Kancheli cutting rules, we derive a complete set of cut nonloop enhanced graphs and observe important cancellations between certain subclasses of the latter. We demonstrate also how the present method can be generalized to take into consideration Pomeron loop contributions.

Ostapchenko, S. [Forschungszentrum Karlsruhe, Institut fuer Kernphysik, 76021 Karlsruhe (Germany); D.V. Skobeltsyn Institute of Nuclear Physics, Moscow State University, 119992 Moscow (Russian Federation)

2008-02-01

447

Evaluating formal properties of feature diagram languages  

Microsoft Academic Search

Feature diagrams (FDs) are a family of popular modelling languages, mainly used for managing variability in software product lines. FDs were first introduced by Kang et al. as part of the feature-oriented domain analysis (FODA) method back in 1990. Since then, various extensions of FODA FDs were devised to compensate for purported ambiguity and lack of precision and expressiveness. Recently,

Patrick Heymans; Pierre-yves Schobbens; Jean-christophe Trigaux; Yves Bontemps; Raimundas Matulevicius; Andreas Classen

2008-01-01

448

Constructing Causal Diagrams to Learn Deliberation  

ERIC Educational Resources Information Center

|Policy problems like "What should we do about global warming?" are ill-defined in large part because we do not agree on a system to represent them the way we agree Algebra problems should be represented by equations. As a first step toward building a policy deliberation tutor, we investigated: (a) whether causal diagrams help students learn to…

Easterday, Matthew W.; Aleven, Vincent; Scheines, Richard; Carver, Sharon M.

2009-01-01

449

Isotactic Polystyrene Phase Diagrams and Physical Gelation.  

National Technical Information Service (NTIS)

Although the gelation of isotactic polystyrene (iPS) solutions has been studied for a long time, no prior attempt has been made to measure phase diagrams of these solutions. This is surprising because it has been suggested that gelation occurs by liquid-l...

J. H. Aubert

1987-01-01

450

Computer-Generated Diagrams for the Classroom.  

ERIC Educational Resources Information Center

|Describes 10 computer programs used to draw diagrams usually drawn on chalkboards, such as addition of three vectors, vector components, range of a projectile, lissajous figures, beats, isotherms, Snell's law, waves passing through a lens, magnetic field due to Helmholtz coils, and three curves. Several programming tips are included. (JN)|

Carle, Mark A.; Greenslade, Thomas B., Jr.

1986-01-01

451

Spectroscopic Determination of Ternary Phase Diagrams  

NASA Astrophysics Data System (ADS)

Ternary phase diagrams describe phase equilibria among three components as a function of composition at constant temperature and pressure. The system of n-propanol, n-heptane, and water exhibits a simple ternary diagram with two well-demarcated regions. One region represents complete liquid miscibility at high proportions of n-propanol. The second region delineates the compositions where two immiscible liquid phases coexist--a water-rich layer and a heptane-rich layer with distinct amounts of solubilized n-propanol. The ternary phase diagram for such partially miscible liquid systems is generally determined in an undergraduate laboratory experiment by both visual methods and classical techniques. Indeed, the demarcation between the one- and two-phase liquid regions is visually discernible through titrations of n-propanol-n-heptane mixtures with water until a second liquid phase appears. However, the compositions of the immiscible liquid phases within the two-phase region can not be determined using classical pH titrations or refractive index measurements. Acidic or basic species are absent, and n-heptane and n-propanol exhibit refractive indices that differ by only 0.002 at room temperature. We have designed a modern experiment using conventional absorbance or fluorescence spectroscopy to rapidly, accurately, ad conveniently construct the n-propanol-n-heptane-water ternary phase diagram.

Karukstis, Kerry K.; Avrantinis, Sara K.; Boegeman, Stephanie L.; Conner, Jeanie N.; Hackman, Blaine M.; Lindsay, Jennifer M.; Mandel, Alexander L.; Miller, Elizabeth J.

2000-06-01

452

NTNU Java: Free-Body Force Diagram  

NSDL National Science Digital Library

This applet illustrates the forces on a block on an inclined plane. A free-body diagram shows the gravitational, normal, frictional and net force vectors. The weight, angle of the plane, and coefficient of friction can be changed by the user. The user can also apply an external force to the block. The motion resulting from the forces is not shown.

Hwang, Fu-Kwun

2005-02-07

453

Characterizing Communication Channel Deadlocks in Sequence Diagrams  

Microsoft Academic Search

Abstract UML sequence diagrams,(SDs) are a mainstay of requirements specifications for communication protocols. Mauw and Reniers’ algebraic (MRA) semantics formally specifies a behaviour for these SDs that guarantees deadlock free processes. Practitioners commonly use communication semantics that differ from MRA, which may result in deadlocks. For example FIFO, token ring, etc. We define a process algebra that is an extension

Bill Mitchell

2008-01-01

454

Computer-Generated Diagrams for the Classroom.  

ERIC Educational Resources Information Center

Describes 10 computer programs used to draw diagrams usually drawn on chalkboards, such as addition of three vectors, vector components, range of a projectile, lissajous figures, beats, isotherms, Snell's law, waves passing through a lens, magnetic field due to Helmholtz coils, and three curves. Several programming tips are included. (JN)

Carle, Mark A.; Greenslade, Thomas B., Jr.

1986-01-01

455

Forming limit diagrams: a micromechanical approach  

Microsoft Academic Search

A method for obtaining the forming limit diagram (FLD) from a micromechanical approach is proposed. Periodic representative volume elements (RVEs) characteristic for the microstructure of a two-phase material containing particles are subjected to biaxial stretching with different strain paths. In the course of straining, a groove forms and grows, finally leading to a stress drop in the overall response. This

H.-P Gänser; E. A Werner; F. D Fischer

2000-01-01

456

Time dependent determination of forming limit diagrams  

Microsoft Academic Search

The forming limit diagram (FLD) is a convenient tool for classification of sheet metals’ formability in the finite element analysis as well as in the press shop. The FLD indicates the maximum strain values which can be applied on a material without failure as a function of the strain condition. In contrast to the standardized evaluation method described in the

M. Merklein; A. Kuppert; M. Geiger

2010-01-01

457

Fog Machines, Vapors, and Phase Diagrams  

ERIC Educational Resources Information Center

|A series of demonstrations is described that elucidate the operation of commercial fog machines by using common laboratory equipment and supplies. The formation of fogs, or "mixing clouds", is discussed in terms of the phase diagram for water and other chemical principles. The demonstrations can be adapted for presentation suitable for elementary…

Vitz, Ed

2008-01-01

458

Dynamic Tactile Diagram Simplification on Refreshable Displays  

ERIC Educational Resources Information Center

|The increasing use of visual diagrams in educational and work environments, and even our daily lives, has created obstacles for individuals who are blind or visually impaired to "independently" access the information they represent. Although physical tactile pictures can be created to convey the visual information, it is typically a slow,…

Rastogi, Ravi; Pawluk, Dianne T. V.

2013-01-01

459

Complexities of One-Component Phase Diagrams  

ERIC Educational Resources Information Center

For most materials, the solid at and near the triple-point temperature is denser than the liquid with which it is in equilibrium. However, for water and certain other materials, the densities of the phases are reversed, with the solid being less dense. The profound consequences for the appearance of the "pVT" diagram of one-component materials…

Ciccioli, Andrea; Glasser, Leslie

2011-01-01

460

Phase diagrams of charged colloidal particles  

Microsoft Academic Search

We have calculated the phase diagrams of charged colloidal particles in the parameter space. The free energies of different phases, which were used to determine the phase boundaries, were calculated variationally. The Einstein oscillators and the hard sphere fluid were used as the reference systems for the solid phases and the liquid, respectively. The interparticle interactions were approximated to be

Wan Y. Shih; Ilhan A. Aksay; Ryoichi Kikuchi

1987-01-01

461

Structural Validation of Causal Loop Diagrams  

Microsoft Academic Search

In this paper, we present techniques for manually testing the validity of each link in a causal loop diagram (CLD). A link is defined as consisting of an origination quantity, a destination quantity and a connection edge between them. Each link is considered as a separate and distinct causal hypothesis whose validity should stand on its own merits. Following Goldratt,

James R. Burns; Philip Musa

2001-01-01

462

Weight diagram construction of Lax operators  

SciTech Connect

We review and expand methods introduced in our previous paper. It is proved that cyclic weight diagrams corresponding to representations of affine Lie algebras allow one to construct the associated Lax operator. The resultant Lax operator is in the Miura-like form and generates the modified KdV equations. The algorithm is extended to the super-symmetric case.

Carbon, S.L.; Piard, E.J.

1991-10-01

463

The BFKL Pomeron calculus: Summing enhanced diagrams  

NASA Astrophysics Data System (ADS)

The goal of this paper is to sum over a class of enhanced diagrams, and derive a new Pomeron Green function. It is found that this sum gives the Pomeron contribution to the scattering amplitude that decreases with energy. In other words, we found that the total cross section of two colourless dipoles of small but equal sizes, falls down at high energies.

Levin, E.; Miller, J.

2012-07-01

464

Multistate Block Diagrams and Fault Trees  

Microsoft Academic Search

This paper shows how to model a multistate system with multistate components using binary variables. This modeling technique allows current binary algorithms for block diagrams and fault trees to be applied to multistate systems. Several multistate examples are presented, and some cases in which computational efficiency can be enhanced are discussed.

Alan P. Wood

1985-01-01

465

Magnetic phase diagram of MnSi  

Microsoft Academic Search

The magnetic phase diagram of MnSi was studied using small angle neutron scattering. The results were analysed using the three-dimensional resolution function and the scattering cross section to model the diffraction data. A small phase pocket (phase ‘A’) just below TN is found to be a modulated antiferromagnet.

B. Lebech; P. Harris; J. Skov Pedersen; K. Mortensen; C. I. Gregory; N. R. Bernhoeft; M. Jermy; S. A. Brown

1995-01-01

466

Dynamical mechanism for the hairpin diagram.  

National Technical Information Service (NTIS)

Based on the non-valence quark-antiquark and gluon constituent structure of mesons we give a reasonable dynamical mechanism which can induce the hairpin diagram without violating the well-observed OZI rule. We calculate the hairpin amplitudes of D deg. yi...

C. Chang X. Guo X. Li

1989-01-01

467

Image Attributes: A Study of Scientific Diagrams.  

ERIC Educational Resources Information Center

Discusses advancements in imaging technology and increased user access to digital images, as well as efforts to develop adequate indexing and retrieval methods for image databases. Describes preliminary results of a study of undergraduates that explored the attributes naive subjects use to describe scientific diagrams. (Author/LRW)

Brunskill, Jeff; Jorgensen, Corinne

2002-01-01

468

Failure Diagram for Chemically Assisted Crack Growth  

NASA Astrophysics Data System (ADS)

A failure diagram that combines the thresholds for failure of a smooth specimen to that of a fracture mechanics specimen, similar to the modified Kitagawa diagram in fatigue, is presented. For a given material/environment system, the diagram defines conditions under which a crack initiated at the threshold stress in a smooth specimen becomes a propagating crack, by satisfying the threshold stress intensity of a long crack. In analogy with fatigue, it is shown that internal stresses or local stress concentrations are required to provide the necessary mechanical crack tip driving forces, on one hand, and reaction/transportation kinetics to provide the chemical potential gradients, on the other. Together, they help in the initiation and propagation of the cracks. The chemical driving forces can be expressed as equivalent mechanical stresses using the failure diagram. Both internal stresses and their gradients, in conjunction with the chemical driving forces, have to meet the minimum magnitude and the minimum gradients to sustain the growth of a microcrack formed. Otherwise, nonpropagating conditions will prevail or a crack formed will remain dormant. It is shown that the processes underlying the crack nucleation in a smooth specimen and the crack growth of a fracture mechanics specimen are essentially the same. Both require building up of internal stresses by local plasticity. The process involves intermittent crack tip blunting and microcrack nucleation until the crack becomes unstable under the applied stress.

Sadananda, K.; Vasudevan, A. K.

2011-02-01

469

Complexities of One-Component Phase Diagrams  

ERIC Educational Resources Information Center

|For most materials, the solid at and near the triple-point temperature is denser than the liquid with which it is in equilibrium. However, for water and certain other materials, the densities of the phases are reversed, with the solid being less dense. The profound consequences for the appearance of the "pVT" diagram of one-component materials…

Ciccioli, Andrea; Glasser, Leslie

2011-01-01

470

A Generalized Wave Diagram for Moving Sources  

NASA Astrophysics Data System (ADS)

Many introductory physics texts1-5 accompany the discussion of the Doppler effect and the formation of shock waves with diagrams illustrating the effect of a source moving through an elastic medium. Typically these diagrams consist of a series of equally spaced dots, representing the location of the source at different times. These are surrounded by a series of successively smaller circles representing wave fronts (see Fig. 1). While such a diagram provides a clear illustration of the shock wave produced by a source moving at a speed greater than the wave speed, and also the resultant pattern when the source speed is less than the wave speed (the Doppler effect), the texts do not often show the details of the construction. As a result, the key connection between the relative distance traveled by the source and the distance traveled by the wave is not explicitly made. In this paper we describe an approach emphasizing this connection that we have found to be a useful classroom supplement to the usual text presentation. As shown in Fig. 2 and Fig. 3, the Doppler effect and the shock wave can be illustrated by diagrams generated by the construction that follows.

Alt, Robert; Wiley, Sam

2004-12-01

471

Drawing conformal diagrams for a fractal landscape  

SciTech Connect

Generic models of cosmological inflation and the recently proposed scenarios of a recycling universe and the string theory landscape predict spacetimes whose global geometry is a stochastic, self-similar fractal. To visualize the complicated causal structure of such a universe, one usually draws a conformal (Carter-Penrose) diagram. I develop a new method for drawing conformal diagrams, applicable to arbitrary 1+1-dimensional spacetimes. This method is based on a qualitative analysis of intersecting lightrays and thus avoids the need for explicit transformations of the spacetime metric. To demonstrate the power and simplicity of this method, I present derivations of diagrams for spacetimes of varying complication. I then apply the lightray method to three different models of an eternally inflating universe (scalar-field inflation, recycling universe, and string theory landscape) involving the nucleation of nested asymptotically flat, de Sitter and/or anti-de Sitter bubbles. I show that the resulting diagrams contain a characteristic fractal arrangement of lines.

Winitzki, Sergei [Department of Physics, Ludwig-Maximilians University, Theresienstr. 37, 80333 Munich (Germany)

2005-06-15

472

Interaction in collaborative computer supported diagram development  

Microsoft Academic Search

A number of computer programs have been developed to allow multiple people to work on the same document at the same time from different computers possibly in different locations. These allow groups to create and modify text and diagrams. A problem for people using these programs is that the physical constraints of working together are removed. For example, there is

Jeffrey D. Campbell

2004-01-01

473

Tensile deformation of NiTi wires.  

PubMed

We examine the structure and properties of cold drawn Ti-50.1 at % Ni and Ti-50.9 at % Ni shape memory alloy wires. Wires with both compositions possess a strong <111> fiber texture in the wire drawing direction, a grain size on the order of micrometers, and a high dislocation density. The more Ni rich wires contain fine second phase precipitates, while the wires with lower Ni content are relatively free of precipitates. The wire stress-strain response depends strongly on composition through operant deformation mechanisms, and cannot be explained based solely on measured differences in the transformation temperatures. We provide fundamental connections between the material structure, deformation mechanisms, and resulting stress-strain responses. The results help clarify some inconsistencies and common misconceptions in the literature. Ramifications on materials selection and design for emerging biomedical applications of NiTi shape memory alloys are discussed. PMID:16138359

Gall, Ken; Tyber, Jeff; Brice, Valerie; Frick, Carl P; Maier, Hans J; Morgan, Neil

2005-12-15

474

Wire codes, magnetic fields, and childhood cancer  

SciTech Connect

Childhood cancer has been modestly associated with wire codes, an exposure surrogate for power frequency magnetic fields, but less consistently with measured fields. The authors analyzed data on the population distribution of wire codes and their relationship with several measured magnetic field metrics. In a given geographic area, there is a marked trend for decreased prevalence from low to high wire code categories, but there are differences between areas. For average measured fields, there is a positive relationship between the mean of the distributions and wire codes but a large overlap among the categories. Better discrimination is obtained for the extremes of the measurement values when comparing the highest and the lowest wire code categories. Instability of measurements, intermittent fields, or other exposure conditions do not appear to provide a viable explanation for the differences between wire codes and magnetic fields with respect to the strength and consistency of their respective association with childhood cancer.

Kheifets, L.I.; Kavet, R.; Sussman, S.S. [Electric Power Research Inst., Palo Alto, CA (United States)

1997-05-01

475

Effluent Based Characterization of Aerospace Wiring  

NASA Astrophysics Data System (ADS)

This paper discusses a wire insulation characterization method under development, which identifies the relative molecular weight and binding energy of effluents given off during wire heating and is aimed at nondestructively assessing wire insulation degradation. An overview of how this technique can be used to monitor wire insulation emissions is presented. A series of measurements made on wire specimens (MIL-W-22759/11-20) with polytetraflouroethylene (PTFE or Teflon®) insulation is presented. A change of up to 55% in the emission concentration of a particular effluent was observed by repeated heating the wire specimens. Temperature measurements of the conductor and insulation were correlated to effluent emission concentrations. A basis for the changes in effluent concentration is also presented and leads to a determination of binding energies and associated time constants.

Cramer, K. Elliott; Yost, William T.; Perey, Daniel F.

2004-02-01

476

On Wire Failures in Microelectronic Packages  

Microsoft Academic Search

At present, over 95% of the manufactured packages are still being wire-bonded. Due to the ongoing trend of miniaturization, material changes, and cost reduction, wire-bond-related failures are becoming increasingly important. Different finite-element (FE) techniques are explored for their ability to describe the thermomechanical behavior of the wire embedded in the electronic package. The developed nonlinear and parametric FE models are

Willem D. van Driel; Richard B. R. van Silfhout; G. Q. Zhang

2009-01-01

477

Hot-Wire Synthesis of Gold Nanoparticles  

Microsoft Academic Search

Gold nanoparticles were synthesized by a hot-wire generator at atmospheric pressure using a gold-platinum composite wire. At low gas flow velocities the nanoparticles were found to be agglomerates of partially sintered primary particles. By reducing the tube size via the insertion of a nozzle with a throat diameter of 3 mm, the hot-wire generator was found to produce small (<10

Adam M. Boies; Pingyan Lei; Steven Calder; Weon Gyu Shin; Steven L. Girshick

2011-01-01

478

Dynamic simulation of wire rope with contact  

Microsoft Academic Search

We present a dynamic simulation of a wire rope involving both contacts with a winch drum and hydraulic systems using the finite\\u000a element method. Rapid winch operation often causes disorderly winding of the wire rope, which is an important quality problem.\\u000a Dynamic simulation is, therefore, required for design of the hydraulic winch system on construction machinery. The wire rope\\u000a is

Etsujiro Imanishi; Takao Nanjo; Takahiro Kobayashi

2009-01-01

479

Wire core reactor for nuclear thermal propulsion  

Microsoft Academic Search

Studies have been performed of a compact high-performance nuclear rocket reactor that incorporates a tungsten alloy wire fuel element. This reactor, termed the wire core reactor, can deliver a specific impulse of 1,000 s using an expander cycle and a nozzle expansion ratio of 500 to 1. The core is constructed of layers of 0.8-mm-dia fueled tungsten wires wound over

Richard B. Harty; Robert G. Brengle

1993-01-01

480

Temperature effects on hot wire anemometer calibrations  

Microsoft Academic Search

Calibrations of a miniature DISA hot wire anemometer probe over a range of wire temperatures and a narrow range of ambient temperatures have been correlated by a simple expression (Ne)(Tm\\/To)a=A+B(Re)n. Values of a and n, which are expected to remain roughly constant for wires of similar geometry, were found to be 0.67 and 0.45 respectively. The value of a is

F A Koch; I S Gartshore

1972-01-01

481

An Electrical Hot-Wire Inclinometer  

Microsoft Academic Search

The hot-wire inclinometer consists essentially of two fine platinum wires (diameter about 0.1 mm.) mounted parallel to one another in a closed chamber at a distance apart equal to about 1 mm. A constant current of from 0.4 to 1.5 ampere (according to the sensitivity desired) is maintained in the wires, which constitute two of the arms of a Wheatstone

J S G Thomas

1919-01-01

482

Wired.  

ERIC Educational Resources Information Center

|Discusses technology's impact on scoreboard design: the development of the light-emitting diode (LED) display. How the LED system works is explained, as are the advantages and disadvantages of LED compared with incandescent lamp boards. Final comments address deciding on materials for scoreboard casings. (GR)|

Conklin, Aaron R.

1998-01-01

483

Plastic Flow of Platinum Wires  

Microsoft Academic Search

The strain-time behavior of annealed platinum wires at constant stress and temperature is reported for a wide range of experimental conditions, namely: 1550 to 78°K, 900 to 40,000 p.s.i., 0.001 to 0.1 strain, 10?1 to 10?6 min.?1 strain rate.The following relations were found to describe the results satisfactorily: ?=A&egr;˙n|&egr;,T; ?=BepT|&egr;,&egr;˙,&egr;=Cta|?,T; Q?log?|&egr;; ?n?T=?p?log&egr;˙|&egr;, where ?=stress, &egr;=strain, ?=strain rate, T=absolute temperature, Q=activation

R. P. Carreker

1950-01-01

484

Flow curves of colloidal dispersions close to the glass transition. Asymptotic scaling laws in a schematic model of mode coupling theory  

NASA Astrophysics Data System (ADS)

The flow curves, viz. the curves of stationary stress under steady shearing, are obtained close to the glass transition in dense colloidal dispersions using asymptotic expansions in the schematic ensuremath{F12(dot{?)}} -model of mode coupling theory. The shear thinning of the viscosity in fluid states and the yielding of glassy states is discussed. At the transition between fluid and shear-molten glass, simple and generalized Herschel-Bulkley laws are derived with power law exponents that can be computed for different particle interactions from the equilibrium structure factor.

Hajnal, D.; Fuchs, M.

2009-02-01

485

Flow curves of colloidal dispersions close to the glass transition. Asymptotic scaling laws in a schematic model of mode coupling theory.  

PubMed

The flow curves, viz. the curves of stationary stress under steady shearing, are obtained close to the glass transition in dense colloidal dispersions using asymptotic expansions in the schematic F??(?)-model of mode coupling theory. The shear thinning of the viscosity in fluid states and the yielding of glassy states is discussed. At the transition between fluid and shear-molten glass, simple and generalized Herschel-Bulkley laws are derived with power law exponents that can be computed for different particle interactions from the equilibrium structure factor. PMID:18777045

Hajnal, D; Fuchs, M

2009-02-01

486

Wire-induced osteogenesis in marrow.  

PubMed

Although it has been reported, in observations connected to electrically stimulated bone repair, that intramedullary electrodes not attached to any electrical source can also induce osteogenesis, there has been only one systematic attempt to study this effect per se. We have extended these studies, implanting selected metal and plastic wires longitudinally into the medullary diaphyses of rat femora. Atomic absorption analysis was used for the first time in analyzing for medullary calcium. This technique and the histologic evaluation clearly indicate that osteogenesis occurs within 2 weeks after this wire implantation. Osteogenesis was not observed when the wire was immediately removed after the original trauma of wire insertion. PMID:4077890

Schaberg, S J; Liboff, A R; Falk, M C

487

Superconducting-wire fabrication. Final report  

SciTech Connect

Experiments were done leading to the fabrication of high-temperature superconducting composite wire. Bulk superconductor was characterized by using optical microscopy, scanning electron microscopy, and energy-dispersive x-ray spectroscopy. The chemical compatibility of superconducting materials with a number of metal sheathing candidates was tested, with silver offering the best compatibility. Wire was fabricated by drawing 0.250-inch-diameter silver tubing packed with superconducting powder. Single core wires were drawn to 0.037-inch diameter. The best critical current performance (660 A/cm2) for leaded bismuth 2-2-2-3 material was achieved by flattening single-core wire before heat treatment.

Glad, W.E.; Chase, G.G.

1990-05-01

488

Generalized Voronoi Diagrams for a Ladder: II. Efficient Construction of the Diagram  

Microsoft Academic Search

We present a collection of algorithms, all running in timeO(n\\u000a 2 logn ? (n)\\u000a o(?(n)3)) for some fixed integers(where ?(n) is the inverse Ackermann's function), for constructing a skeleton representation of a suitably generalized “Voronoi diagram”\\u000a for a ladder moving in a two-dimensional space bounded by polygonal barriers consisting ofn line segments. This diagram, which is a two-dimensional subcomplex of

Colm Ó'dúnlaing; Micha Sharir; Chee-keng Yap

1987-01-01

489

Visualizing Flow Diagrams in WebSphere Studio Using SHriMP Views (Visualizing Flow Diagrams)  

Microsoft Academic Search

Abstract: This paper describes the integration of an information visualization tool, called SHriMPViews, with IBM WebSphere Studio Application Developer Integration Edition, whichwas developed with Eclipse technology. Although SHriMP was originally developedfor visualizing programs, it is content-independent. We have re-targeted SHriMP forvisualizing flow diagrams. Flow diagrams, as supported by WebSphere Studio ApplicationDeveloper Integration Edition, can be hierarchically composed, thus...

Derek Rayside; Marin Litoiu

490

Improving humidity bond reliability of copper bonding wires  

Microsoft Academic Search

There is growing interest in Cu wire bonding for LSI interconnection due to cost savings and better electrical and mechanical properties. Conventional bare Cu bonding wires, in general, are severely limited in their use compared to Au wires. A coated Cu bonding wire (EX1) has been developed for LSI application. EX1 is a Pd-coated Cu wire to enhance the bondability.

Tomohiro Uno; Takashi Yamada

2010-01-01

491

Processing a printed wiring board by single bath electrodeposition  

SciTech Connect

A method of processing a printed wiring board. Initial processing steps are implemented on the printed wiring board. Copper is plated on the printed wiring board from a bath containing nickel and copper. Nickel is plated on the printed wiring board from a bath containing nickel and copper and final processing steps are implemented on the printed wiring board.

Meltzer, Michael P. (Oakland, CA); Steffani, Christopher P. (Livermore, CA); Gonfiotti, Ray A. (Livermore, CA)

2010-12-07

492

Developments in fine pitch copper wire bonding production  

Microsoft Academic Search

Copper wire bonding has huge cost advantages over gold wire bonding. Wire bonding and materials companies have invested heavily in R&D in the last 2 or 3 years and are starting to see the fruits of their labor. Low pin count, heavy wire packages have already been converted to copper wire and many companies are in high volume production. An

Bob Chylak

2009-01-01

493

Exciton gas compression and metallic condensation in a single semiconductor quantum wire.  

PubMed

We study the metal-insulator transition in individual self-assembled quantum wires and report optical evidence of metallic liquid condensation at low temperatures. First, we observe that the temperature and power dependence of the single nanowire photoluminescence follow the evolution expected for an electron-hole liquid in one dimension. Second, we find novel spectral features that suggest that in this situation the expanding liquid condensate compresses the exciton gas in real space. Finally, we estimate the critical density and critical temperature of the phase transition diagram at n{c} approximately 1 x 10;{5} cm;{-1} and T{c} approximately 35 K, respectively. PMID:18764504

Alén, B; Fuster, D; Muñoz-Matutano, G; Martínez-Pastor, J; González, Y; Canet-Ferrer, J; González, L

2008-08-08

494

Evolution of cementite morphology in pearlitic steel wire during wet wire drawing  

Microsoft Academic Search

The evolution of the cementite phase during wet wire drawing of a pearlitic steel wire has been followed as a function of strain. Particular attention has been given to a quantitative characterization of changes in the alignment and in the dimensions of the cementite phase. Scanning electron microscope observations show that cementite plates become increasingly aligned with the wire axis

Xiaodan Zhang; Andrew Godfrey; Niels Hansen; Xiaoxu Huang; Wei Liu; Qing Liu

2010-01-01

495

The mechanical behavior of a wire rope with an independent wire rope core  

Microsoft Academic Search

A new model for simulating the mechanical response of a wire rope with an independent wire rope core is presented. The rope is subjected to both an axial load and an axial torque. In contrast with previous models that consider the effective response of wound strands, the present model fully considers the double-helix configuration of individual wires within the wound

D. Elata; R. Eshkenazy; M. P. Weiss

2004-01-01

496

Efficient Computation of the Effect of Wire Ends in Thin Wire Analysis  

Microsoft Academic Search

Computationally efficient algorithms are presented for the computation of the effect of flat wire ends (end caps) in the common thin wire model. A uniform charge distribution over the surface of the end cap is assumed, and the full or exact kernel of the electric field integral equation formulation for cylindrical wires is used. The algorithms have been implemented in

A. Heldring; E. Ubeda; J. M. Rius

2006-01-01

497

The Effect of Cutting Parameters on Wire Crater Sizes in Wire EDM  

Microsoft Academic Search

In this study, the effect of the cutting parameters on size of erosion craters (diameter and depth) on wire electrode were experimentally and theoretically investigated in wire electrical discharge machining (WEDM). The experiments were conducted under the different cutting parameters of pulse duration (300, 500, 700, and 900 ns), open circuit voltage (80, 100, and 270 V), wire speed (5,

N. Tosun; H. Pihtili

2003-01-01

498

Algorithms and Programs for Consequence Diagram and Fault Tree Construction.  

National Technical Information Service (NTIS)

A presentation of algorithms and programs for consequence diagram and sequential fault tree construction that are intended for reliability and disturbance analysis of large systems. The system to be analyzed must be given as a block diagram formed by mini...

E. Hollo J. R. Taylor

1976-01-01

499

Massive basketball diagram for a thermal scalar field theory  

NASA Astrophysics Data System (ADS)

The ``basketball diagram'' is a three-loop vacuum diagram for a scalar field theory that cannot be expressed in terms of one-loop diagrams. We calculate this diagram for a massive scalar field at nonzero temperature, reducing it to expressions involving three-dimensional integrals that can be easily evaluated numerically. We use this result to calculate the free energy for a massive scalar field with a ?4 interaction to three-loop order.

Andersen, Jens O.; Braaten, Eric; Strickland, Michael

2000-08-01

500

Phase diagram of 4He on graphene  

NASA Astrophysics Data System (ADS)

The low-temperature phase diagram of 4He adsorbed on a single graphene sheet is studied by computer simulations of a system consisting of nearly a thousand helium atoms. In the first layer, two commensurate solid phases are observed with fillings 1/3 and 7/16, respectively, separated by a domain wall phase, as well as an incommensurate crystal at a higher coverage. No evidence of a thermodynamically stable superfluid phase is found for the first adlayer. Second-layer promotion occurs at a coverage of 0.111(4) Å-2. In the second layer, two phases are observed, namely a superfluid and an incommensurate solid, with no commensurate solid intervening between these two phases. The computed phase diagram closely resembles that predicted for helium on graphite.

Happacher, Jodok; Corboz, Philippe; Boninsegni, Massimo; Pollet, Lode

2013-03-01