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1

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

2

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

3

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

4

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

5

Dynamic Reliability Block Diagrams VS Dynamic Fault Trees  

Microsoft Academic Search

Reliability block diagrams (RBD), and fault trees (FT) are the most widely used formalisms in system reliability modeling. They implement two different approaches: in a reliability block diagram, the system is represented by components connected according to their function or reliability relationships, while fault trees show which combinations of the components failures will result in a system failure. Although RBD

Salvatore Distefano; Antonio Puliafito

2007-01-01

6

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

7

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

8

Dependability Evaluation with Dynamic Reliability Block Diagrams and Dynamic Fault Trees  

Microsoft Academic Search

Dependability evaluation is an important often-mandatory step in designing and analyzing (critical) systems. Introducing control and\\/or computing devices to automate processes increases the system complexity, with an impact on the overall dependability. This occurs as a consequence of interferences, dependencies, and other similar effects that cannot be adequately managed through formalisms such as reliability block diagrams (RBDs), fault trees (FTs),

Salvatore Distefano; Antonio Puliafito

2009-01-01

9

Word-length determination and scaling software for a signal flow block diagram  

Microsoft Academic Search

Software for word-length determination and scaling of a general signal flow block diagram is developed for aiding the development of fixed-point digital signal processing algorithms. A fixed-point performance measure, such as signal to quantization noise ratio, and a hardware cost model are used as constraints to the optimization. Simulation using a real input signal is conducted for the evaluation of

Wonyong Sung; Ki-Il Kum

1994-01-01

10

Block diagram grammar and signal flow graph grammar with their applications  

Microsoft Academic Search

A block diagram grammar and a signal flow graph grammar were previously defined as a theoretical and practical foundation for the computerized analysis and design of control systems and filters by using block diagrams and\\/or signal flow graphs. They are formalized on the basis of a context-sensitive graph grammar. In this research, a knowledge representation method in order to generate

Y. Adachi; S. Kobayashi; Y. Suda; K. Tsuchida

1999-01-01

11

Direct synthesis of optimized DSP assembly code from signal flow block diagrams  

Microsoft Academic Search

Block diagrams with signal flow semantics have proven their utility in system simulation and algorithm development. They can also be used as high-level languages for real-time system implementation and design. An approach to synthesizing optimized assembly code for programmable DSPs from block diagrams is described. The extensible block library defines code segments in a meta-assembly language that uses the syntax

Douglas B. Powell; Edward A. Lee; William C. Newman

1992-01-01

12

Parameterized GSPN model and extended dependability block diagram for reliability evaluation of embedded systems  

Microsoft Academic Search

In this study we focus on the specification and evaluation of parameterized generalized and stochastic Petri net (GSPN) models for reliability and safety estimates of embedded systems. The embedded system to be modeled is specified using the extended dependability block diagram (EDBD), a high-level system specification model, which is composed of several and diverse blocks: functional, decision, standby spare, multiple

PRM Maciel; Paulo Romero Martins Maciel

2006-01-01

13

A Dynamic Mathematical Model and Vector Block Diagrams for a Class of Hybrid Field Synchronous Motors  

NASA Astrophysics Data System (ADS)

This paper proposes a new dynamic mathematical model and new block diagrams for a newly emerging class of salient-pole hybrid-field synchronous motors (HFSM) that have rotor field by both permanent magnet and winding. The proposed new mathematical model has the following completeness and generality. 1) It consists of three consistent basic equations such as circuit, torque and energy-transmission equations. 2) It deals with pole saliency and contains non-saliency as a special case. 3) It is a dynamic model and contains static one as a special case. 4) It is established in the general reference frame including stator and rotor reference frames as special cases. The proposed new block diagrams using vector signals for salient-pole HFSM is established based on the new model. It has the following attractive features. 1) It succeeds in realizing clear configurations with physically meaningful vector signals, which are helpful for understanding motor electromagnetic mechanism and useful for designing controllers for the salient-pole HFSM. 2) Vector signals utilized as transfer signals between blocks are defined in the general reference frame. Consequently, the vector-signal block diagrams in the frame can be directly and easily reduced to the ones in such a specific frame as stator and rotor frames. 3) It is compact. Two typical and compact but sufficiently general vector-signal block diagrams are newly presented.

Shinnaka, Shinji

14

Block voter model: Phase diagram and critical behavior  

NASA Astrophysics Data System (ADS)

We introduce and study the block voter model with noise on two-dimensional square lattices using Monte Carlo simulations and finite-size scaling techniques. The model is defined by an outflow dynamics where a central set of NPCS spins, here denoted by persuasive cluster spins (PCS), tries to influence the opinion of their neighboring counterparts. We consider the collective behavior of the entire system with varying PCS size. When NPCS>2, the system exhibits an order-disorder phase transition at a critical noise parameter qc which is a monotonically increasing function of the size of the persuasive cluster. We conclude that a larger PCS has more power of persuasion, when compared to a smaller one. It also seems that the resulting critical behavior is Ising-like independent of the range of interaction.

Sampaio-Filho, C. I. N.; Moreira, F. G. B.

2011-11-01

15

Formalizing Causal Block Diagrams for Modeling a Class of Hybrid Dynamic Systems  

Microsoft Academic Search

This paper attempts to formalize the semantics of causal block diagrams, a language that is extensively used in the design of technical systems. The formalization is based on lambda calculus, and implemented in the declarative functional language Haskell. Specifically, the combination of discrete-time and continuous-time computations, hybrid dynamic systems, is concentrated on. It shows how in many cases this combination

Ben Denckla; Pieter J. Mosterman

2005-01-01

16

Simulation of mixed bond graphs and block diagrams on personal computers using TUTSIM  

Microsoft Academic Search

The TUTSIM simulation program for continuous dynamic systems accepts (nonlinear) block diagrams, bond graphs or a free mix of both. The simulation is “hands on” interactive, providing a direct contact with the model. The implementation of the program on existing personal computers (Apple II, IBM PC) requires small memory size and has a high computational speed, due to its assembler

J. J. A. J. Beukeboom; J. J. Van Dixhoorn; J. W. Meerman

1985-01-01

17

THE HIGHER ORDER HAUSDORFF VORONOI DIAGRAM AND VLSI CRITICAL AREA EXTRACTION FOR VIA-BLOCKS  

Microsoft Academic Search

We extend the Voronoi diagram framework to com- pute the critical area of a circuit layout (15, 12, 16, 13, 14) with the ability to accurately compute critical area for via-blocks on via and contact layers in the presence of multilayer loops, redundant vias, and redundant interconnects. Critical area is a measure re- flecting the sensitivity of a VLSI design

EVANTHIA PAPADOPOULOU

18

Efficient coupling of multibody software with numerical computing environments and block diagram simulators  

Microsoft Academic Search

Simulation of complex mechatronic systems like an automobile, involving mechanical components as well as actuators and active\\u000a electronic control devices, can be accomplished by combining tools that deal with the simulation of the different subsystems.\\u000a In this sense, it is often desirable to couple a multibody simulation software (for the mechanical simulation) with external\\u000a numerical computing environments and block diagram

Francisco González; Manuel González; Aki Mikkola

2010-01-01

19

Surface Morphology Diagram for Cylinder-Forming Block Copolymer Thin Films  

SciTech Connect

We investigate the effect of annealing temperature (T), film thickness (hf) on the surface morphology of flow coated films of a cylinder forming block copolymer, poly (styrene-block-methyl methacrylate) (PS-b-PMMA). Surface morphology transitions from a perpendicular to a parallel cylinder orientation with respect to the substrate with increasing hf are observed in these model frustrated-interaction films where the substrate interaction is preferential for one of the blocks (PMMA) and nearly neutral for the other interface (polymer-air). In these films a transition occurs from cylinders oriented parallel to the substrate to a mixed or hybrid state where the two orientations coexist followed by a transition to cylinders oriented perpendicularly to the polymer-air interface for larger hf. The characteristic values of hf defining these surface morphological transitions depend on T and we construct a surface morphology diagram as a function of hf and T. The surface morphology diagram is found to depend on the method of film formation (flow coated versus spun cast films) so non-equilibrium effects evidently have a large effect on the surface pattern morphology. In particular, the residual solvent within the film (quantified by neutron reflectivity measurements) in the context of physics of glass-formation can have a large effect on the surface morphology diagram.

Zhang, Xiaohua [National Institute of Standards and Technology (NIST); Berry, Brian C. [National Institute of Standards and Technology (NIST); Yager, Kevin G. [National Institute of Standards and Technology (NIST); Kim, Sangcheol [National Institute of Standards and Technology (NIST); Jones, Ronald L. [National Institute of Standards and Technology (NIST); Satija, Sushil [National Institute of Standards and Technology (NIST); Pickel, Deanna L [ORNL; Douglas, Jack F> [National Institute of Standards and Technology (NIST); Karim, Alamgir [National Institute of Standards and Technology (NIST)

2008-01-01

20

An Algebra for Data Flow Diagram Process Decomposition  

Microsoft Academic Search

Data flow diagram process decomposition, as applied in the analysis phase of software engineering, is a top-down method that takes a process, and its input and output data flows, and logically implements the process as a network of smaller processes. The decomposition is generally performed in an ad hoc manner by an analyst applying heuristics, expertise, and knowledge to the

Mike Adler

1988-01-01

21

The Effect of Block-Word Diagrams on the Structuring of Science Concepts as a Function of General Ability.  

ERIC Educational Resources Information Center

|Examines the effectiveness of block-word diagrams in science instruction for ninth graders using directed graphs that express content structure as key concepts joined by arrows. Results include the finding that the effect of text-plus-diagram treatment compared to text-only treatment was different for learners of different ability. (CS)|

Winn, William

1980-01-01

22

Dataflow diagram representation of biological process: DNA, RNA, and protein  

Microsoft Academic Search

In this paper, we introduce a new method of modeling tool for a biological process -central dogma. The data-flow diagram is used as a representation of the whole data input and output, which enables us to simulate, analyze, and manipulate (in the future) at our disposal. From DNA to protein via RNA is the one of most well-known biological process,

Joe W. Yeol; W. Samarrai; I. Barjis; Y. S. Ryu

2005-01-01

23

The Effect of Diagrams on Online Reading Processes and Memory  

ERIC Educational Resources Information Center

|This work examined how adjunct displays influence college readers' moment-by-moment processing of text and the products of reading, using reading time (Experiments 1 & 2), and think-aloud methodologies (Experiment 3). Participants did or did not study a diagram before reading a text. Overall, the reading time data, think-aloud data, and recall…

McCrudden, Matthew T.; Magliano, Joseph P.; Schraw, Gregory

2011-01-01

24

Fast Binary Image Processing Using Binary Decision Diagrams  

Microsoft Academic Search

Abstract: Many classical image processing tasks can be realized as evaluations of a boolean function over subsets of an image. For instance, the simplicity test used in 3D thinning re- quires examining,the 26 neighbors of each voxel and computing,a single boolean function of these inputs. In this article, we show how Binary Decision Diagrams can be used to pro- duce

Luc Robert; Gre goire Malandain; Projets Robotvis; E pidaure

25

Design of processes with reactive distillation line diagrams  

SciTech Connect

On the basis of the transformation of concentration coordinates, the concept of reactive distillation lines is developed. It is applied to study the feasibility of a reactive distillation with an equilibrium reaction on all trays of a distillation column. The singular points in the distillation line diagrams are characterized in terms of nodes and saddles. Depending on the characterization of the reactive distillation line diagrams, it can be decided whether a column with two feed stages is required. On the basis of the reaction space concept, a procedure for identification of reactive distillation processes is developed, in which the reactive distillation column has to be divided into reactive and nonreactive sections. This can be necessary to overcome the limitations in separation which result from the chemical equilibrium. The concentration profile of this combined reactive/nonreactive distillation column is estimated using combined reactive/nonreactive distillation lines.

Bessling, B. [BASF Ludwigshafen (Germany). Engineering Research and Development; Schembecker, G.; Simmrock, K.H. [Univ. of Dortmund (Germany). Dept. of Chemical Engineering

1997-08-01

26

Phase diagram of the ABC model with nonconserving processes  

NASA Astrophysics Data System (ADS)

The three species ABC model of driven particles on a ring is generalized to include vacancies and particle-nonconserving processes. The model exhibits phase separation at high densities. For equal average densities of the three species, it is shown that although the dynamics is local, it obeys detailed balance with respect to a Hamiltonian with long-range interactions, yielding a nonadditive free energy. The phase diagrams of the conserving and nonconserving models, corresponding to the canonical and grand-canonical ensembles, respectively, are calculated in the thermodynamic limit. Both models exhibit a transition from a homogeneous to a phase-separated state, although the phase diagrams are shown to differ from each other. This conforms with the expected inequivalence of ensembles in equilibrium systems with long-range interactions. These results are based on a stability analysis of the homogeneous phase and exact solution of the continuum equations of the models. They are supported by Monte Carlo simulations. This study may serve as a useful starting point for analyzing the phase diagram for unequal densities, where detailed balance is not satisfied and thus a Hamiltonian cannot be defined.

Lederhendler, A.; Cohen, O.; Mukamel, D.

2010-11-01

27

WATER PROCESS SYSTEM FLOW DIAGRAM FOR MTR, TRA603. SUMMARY OF ...  

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

WATER PROCESS SYSTEM FLOW DIAGRAM FOR MTR, TRA-603. SUMMARY OF COOLANT FLOW FROM WORKING RESERVOIR TO INTERIOR OF REACTOR'S THERMAL SHIELD. NAMES TANK SECTIONS. PIPE AND DRAIN-LINE SIZES. SHOWS DIRECTION OF AIR FLOW THROUGH PEBBLE AND GRAPHITE BLOCK ZONE. NEUTRON CURTAIN AND THERMAL COLUMN DOOR. BLAW-KNOX 3150-92-7, 3/1950. INL INDEX NO. 531-0603-51-098-100036, REV. 6. - Idaho National Engineering Laboratory, Test Reactor Area, Materials & Engineering Test Reactors, Scoville, Butte County, ID

28

Fuel Retrieval System Process Flow Diagrams Mass Balance Calculations for K West Basin  

SciTech Connect

This calculation justifies the numbers used for the material balance on the process flow diagrams for the KW Basin Fuel Retrieval Subproject. The purpose of these calculations is to develop the material balances that are documented in the Fuel Retrieval System (FRS) Process Flow Diagrams for future reference. The attached mass calculations were prepared in support of revising the fuel retrieval system process flow diagrams for the 105K West Basin. The calculations refer to diagram H-1-81164.

REED, A.V.

2000-01-03

29

Process Technical Basis Documentation Diagram for a solid-waste processing facility  

SciTech Connect

The Process Technical Basis Documentation Diagram is for a solid-waste processing facility that could be designed to treat, package, and certify contact-handled mixed low-level waste for permanent disposal. The treatment processes include stabilization using cementitious materials and immobilization using a polymer material. The Diagram identifies several engineering/demonstration activities that would confirm the process selection and process design. An independent peer review was conducted at the request of Westinghouse Hanford Company to determine the technical adequacy of the technical approach for waste form development. The peer review panel provided comments and identified documents that it felt were needed in the Diagram as precedence for Title I design. The Diagram is a visual tool to identify traceable documentation of key activities, including those documents suggested by the peer review, and to show how they relate to each other. The Diagram is divided into three sections: (1) the Facility section, which contains documents pertaining to the facility design, (2) the Process Demonstration section, which contains documents pertaining to the process engineering/demonstration work, and 3) the Regulatory section, which contains documents describing the compliance strategy for each acceptance requirement for each feed type, and how this strategy will be implemented.

Benar, C.J.; Petersen, C.A.

1994-02-01

30

Application of a feasible formability diagram for the effective design in stamping processes of automotive panels  

Microsoft Academic Search

The objective of this study is to propose a method of process design that uses a feasible formability diagram, which denotes the safe region without fracture and wrinkle, for the effective and rapid design of stamping processes. To determine the feasible formability diagram, FE-analyses have been performed for combinations of process variables that correspond to the orthogonal array of design

Dae-Cheol Ko; Seung-Hoon Cha; Sang-Kon Lee; Chan-Joo Lee; Byung-Min Kim

2010-01-01

31

Integration of block copolymers into lithographic processes  

NASA Astrophysics Data System (ADS)

In the photolithographic process, information in the form of exposed and unexposed material is transferred to a sacrificial photoresist film in the exposure tool. Through a series of processing steps patterned features are ultimately created from that information that can then define components of devices or other functional materials. As feature dimensions shrink below 30 nm, however, the fidelity of the transferred information using current resists may not meet manufacturing requirements, particularly with respect to control over the precise size and shape of the patterned features, and the cost of manufacturing at ever higher resolution may become prohibitively expensive. We are investigating techniques to integrate self-assembling block copolymers into the lithographic process for improved information transfer, process control, and sub 15 nm resolution. We demonstrate strategies to reach these objectives and at the same time retain essential lithographic process attributes such as pattern perfection, registration, the ability to pattern non-regular device-oriented structures, and high volume manufacturing.

Nealey, Paul

2008-03-01

32

Application of quaternary phase diagrams to compound semiconductor processing.  

National Technical Information Service (NTIS)

Isobaric, isothermal phase diagrams are a molar representation of condensed phases in equilibrium with each other at a fixed temperature, pressure, and composition. Since three or four elements are usually involved at a fabricated interface in a semicondu...

R. Sinclair

1994-01-01

33

Healthcare Modelling through Role Activity Diagrams for Process-Based Information Systems Development  

Microsoft Academic Search

The aim of this paper is to introduce the socio-technical Role Activity Diagram modelling language to National Health Service\\u000a (NHS) information systems requirements engineering using a process approach. Most requirements engineering in the NHS is done\\u000a using data-driven methods such as data flow diagrams. Role Activity Diagrams provide not only a socio-technical method for\\u000a analysing a particular systems development problem,

Nandish V. Patel

2000-01-01

34

Interpreting Evolutionary Diagrams: When Topology and Process Conflict  

ERIC Educational Resources Information Center

|The authors argue that some diagrams in biology textbooks and the popular press presented as depicting evolutionary relationships suggest an inappropriate (anagenic) conception of evolutionary history. The goal of this research was to provide baseline data that begin to document how college students conceptualize the evolutionary relationships…

Catley, Kefyn M.; Novick, Laura R.; Shade, Courtney K.

2010-01-01

35

Spent Nuclear Fuel (SNF) Project Canister Storage Building (CSB) Process Flow Diagram Mass Balance Calculations  

SciTech Connect

The purpose of these calculations is to develop the material balances for documentation of the Canister Storage Building (CSB) Process Flow Diagram (PFD) and future reference. The attached mass balances were prepared to support revision two of the PFD for the CSB. The calculations refer to diagram H-2-825869.

KLEM, M.J.

2000-05-11

36

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

37

Process logic flow diagram write up for the Advanced Recovery and Integrated Extraction System (ARIES) facility  

SciTech Connect

The Department of Energy Office of Fissile Materials Disposition (DOE-MD) is planning a facility to disassemble pits and convert the plutonium in the pits into a form suitable for international inspection. The facility, called the Advanced Recovery and Integrated Extraction System (ARIES) Facility, must handle much of the 38.2 metric tons of plutonium declared excess to national security needs in ten years of operation. A process logic flow diagram for the ARIES Facility is presented here. This flow diagram is based on and supported by a library of fact sheets on topics that impact the design of the facility. Developing the flow diagram raised issues that significantly impact the design of the facility. These issues are discussed later in this document, and for some issues, discussed in greater detail in the appropriate fact sheets. The flow diagram is designed to show requirements that dictate the need for space and/or equipment. In physically designing the facility, the same space or equipment may be used to meet several requirements. The flow diagram merely shows the activities that need to occur to meet requirements for the facility. The flow diagram is not associated with any DOE site. The requirements shown on the flow diagram may be met by an existing facilities at a given site. The flow diagram and this write up do not contain a great deal of detail on how each step in the diagram is performed. At this stage of design, the flow diagram merely identifies the need for the activity. Examples for some of the activities are given in the appropriate fact sheet. How the steps are performed becomes more defined as the design of the facility progresses.

Zygmunt, S.J.

1997-05-01

38

Processing of IN-718 Lattice Block Castings.  

National Technical Information Service (NTIS)

Recently a low cost casting method known as lattice block casting has been developed by JAM Corporation, Wilmington, Massachusetts for engineering materials such as aluminum and stainless steels that has shown to provide very high stiffness and strength w...

M. G. Hebsur

2002-01-01

39

TV Trouble-Shooting Manual. Volumes 3-4. Part 1: Block Diagram of Colour TV Receiver and Signal Flow. Student and Instructor's Manuals.  

ERIC Educational Resources Information Center

These volumes are, respectively, the self-instructional student manual and the teacher manual that cover the first set of training topics in this course for television repair technicians. Both volumes contain the following two sections: (1) Functional Block Diagram of a Colour TV Receiver, including information on the video reproduction circuit,…

Mukai, Masaaki; Kobayashi, Ryozo

40

Formally Verified Building Blocks in Functional Logic Diagrams for Emergency Shutdown System Design  

Microsoft Academic Search

The task of safeguarding systems is to bring processes from dangerous intosafe states. A special class of safeguarding systems are emergency shutdownsystems (ESD), which, until now, are only implemented in inherentlyfail safe hardwired forms. Despite their high reliability, there is an urgentindustrial need to replace them by more flexible systems. Therefore, inan earlier work, a dedicated programmable logic controller (PLC)

Wolfgang A. Halang; Bernd Krämer; Norbert Völker

1995-01-01

41

Block-Cholesky for Parallel Processing.  

National Technical Information Service (NTIS)

Cholesky factorization of A = L L(sup T), where A is a positive definite symmetric matrix and L is a lower triangular matrix, is addressed. A blocked algorithm based on level 3 BLAS is discussed. When using Level 3 BLAS kernels in a multiprocessing mode, ...

M. Louter-nool

1990-01-01

42

Integrating Role Activity Diagrams and Hybrid IDEF for Business Process Modeling Using MDA  

Microsoft Academic Search

Business process modeling is an important phase dur- ing requirements collection. Usually functional, dynamic and role models are needed. We propose to integrate Role Activity Diagrams and Hybrid IDEF for business process modeling within Model Driven Architecture. Our pro- posal is demonstrated with a sample implementation.

Costin Badica; Maria Teodorescu; Cosmin Spahiu; Amelia Badica; Chris Fox

2005-01-01

43

The organization of intrinsic computation: Complexity-entropy diagrams and the diversity of natural information processing  

NASA Astrophysics Data System (ADS)

Intrinsic computation refers to how dynamical systems store, structure, and transform historical and spatial information. By graphing a measure of structural complexity against a measure of randomness, complexity-entropy diagrams display the different kinds of intrinsic computation across an entire class of systems. Here, we use complexity-entropy diagrams to analyze intrinsic computation in a broad array of deterministic nonlinear and linear stochastic processes, including maps of the interval, cellular automata, and Ising spin systems in one and two dimensions, Markov chains, and probabilistic minimal finite-state machines. Since complexity-entropy diagrams are a function only of observed configurations, they can be used to compare systems without reference to system coordinates or parameters. It has been known for some time that in special cases complexity-entropy diagrams reveal that high degrees of information processing are associated with phase transitions in the underlying process space, the so-called ``edge of chaos.'' Generally, though, complexity-entropy diagrams differ substantially in character, demonstrating a genuine diversity of distinct kinds of intrinsic computation.

Feldman, David P.; McTague, Carl S.; Crutchfield, James P.

2008-12-01

44

Phase diagrams of the Katz-Lebowitz-Spohn process on lattices with a junction.  

PubMed

This paper studies the Katz-Lebowitz-Spohn (KLS) process on lattices with a junction, where particles move on parallel lattice branches that combine into a single lattice at the junction. It is shown that 11 kinds of phase diagrams could be observed, depending on the two parameters ? and ? in the KLS process. We have investigated the phase diagrams as well as bulk density analytically based on flow rate conservation and the extremal current principle. Extensive Monte Carlo computer simulations are performed, and it is found that they are in excellent agreement with theoretical prediction. PMID:23848644

Tian, Bo; Jiang, Rui; Ding, Zhong-Jun; Hu, Mao-Bin; Wu, Qing-Song

2013-06-18

45

Does the process map influence the outcome of quality improvement work? A comparison of a sequential flow diagram and a hierarchical task analysis diagram  

PubMed Central

Background Many quality and safety improvement methods in healthcare rely on a complete and accurate map of the process. Process mapping in healthcare is often achieved using a sequential flow diagram, but there is little guidance available in the literature about the most effective type of process map to use. Moreover there is evidence that the organisation of information in an external representation affects reasoning and decision making. This exploratory study examined whether the type of process map - sequential or hierarchical - affects healthcare practitioners' judgments. Methods A sequential and a hierarchical process map of a community-based anti coagulation clinic were produced based on data obtained from interviews, talk-throughs, attendance at a training session and examination of protocols and policies. Clinic practitioners were asked to specify the parts of the process that they judged to contain quality and safety concerns. The process maps were then shown to them in counter-balanced order and they were asked to circle on the diagrams the parts of the process where they had the greatest quality and safety concerns. A structured interview was then conducted, in which they were asked about various aspects of the diagrams. Results Quality and safety concerns cited by practitioners differed depending on whether they were or were not looking at a process map, and whether they were looking at a sequential diagram or a hierarchical diagram. More concerns were identified using the hierarchical diagram compared with the sequential diagram and more concerns were identified in relation to clinical work than administrative work. Participants' preference for the sequential or hierarchical diagram depended on the context in which they would be using it. The difficulties of determining the boundaries for the analysis and the granularity required were highlighted. Conclusions The results indicated that the layout of a process map does influence perceptions of quality and safety problems in a process. In quality improvement work it is important to carefully consider the type of process map to be used and to consider using more than one map to ensure that different aspects of the process are captured.

2010-01-01

46

FMEF Electrical single line diagram and panel schedule verification process  

SciTech Connect

Since the FMEF did not have a mission, a formal drawing verification program was not developed, however, a verification process on essential electrical single line drawings and panel schedules was established to benefit the operations lock and tag program and to enhance the electrical safety culture of the facility. The purpose of this document is to provide a basis by which future landlords and cognizant personnel can understand the degree of verification performed on the electrical single lines and panel schedules. It is the intent that this document be revised or replaced by a more formal requirements document if a mission is identified for the FMEF.

FONG, S.K.

1998-11-11

47

Mathematics Teaching and Learning as a Mediating Process: The Case of Tape Diagrams  

Microsoft Academic Search

This article examines how visual representations may mediate the teaching and learning of mathematics over time in Japanese elementary classrooms. Using the Zone of Proximal Development Mathematical Learning Model (Murata & Fuson, 2006; Fuson & Murata, 2007), the process of mediation is explicated. The tape diagram, a central visual representation used in Japanese mathematics curriculum, is explored for its roles

Aki Murata

2008-01-01

48

Molecular systems biology: data-flow diagram modeling of process in protein  

Microsoft Academic Search

In this paper, we introduce a new method of modeling tool for a biological process - central dogma. The data-flow diagram is used as a representation of the whole data input and output, which enables us to simulate, analyze, and manipulate (in the future) at our disposal. From DNA to protein via RNA is the one of most well-known biological

J. W. Yeol; I. Barjis; Y. S. Ryu

2005-01-01

49

Effect of Thermomechanical Processing on Forming Limit Diagrams Predicted by Neural Networks  

Microsoft Academic Search

In the present work, an artificial neural network (ANN) model was developed for predicting the effect of thermo-mechanical processing on the forming limit diagram (FLD) of low carbon steels. The model introduced here considers the content of carbon, the hot finishing temperature, the degree of cold work, the work hardening exponent, the initial yield stress and the ASTM grain size

K. Dehghani; A. Shafiei M; H. Naeimi

2008-01-01

50

Spent Nuclear Fuel (SNF) Project Multi Canister Overpack (MCO) Process Flow Diagram Mass Balance Calculations  

SciTech Connect

The purpose of this calculation document is to develop the bases for the material balances of the Multi-Canister Overpack (MCO) Level 1 Process Flow Diagram (PFD). The attached mass balances support revision two of the PFD for the MCO and provide future reference.

KLEM, M.J.

2000-09-08

51

A Knowledge Based Technique for the Process Modelling of Information Systems: The Object Life Cycle Diagram  

Microsoft Academic Search

This paper presents a new technique for IS process\\/behavioural modelling. Object Life Cycle is proposed as an extension of the conventional entity life history diagram with a Petri-Net based formalism and an Event-Precondition-Action process representation. A normalization approach for IS process modelling is suggested and several OLC norms discussed. Generalization and aggregation of OLCs are explored along with the concepts

Ip Saimond; Tony Holden

1992-01-01

52

Kinetic Process Graphs : Building Intuitive and Parsimonious Material Stock-Flow Diagrams with Modified Bond Graph Notations  

Microsoft Academic Search

This paper presents a new graphical modelling language extending the stock-flow (SF) diagrams used in System Dynamics (SD). It introduces a new kind of graphs, the «Kinetic Process Graphs or KPGs». A KPG groups in a single flow-process some mechanisms representing flows modelled separately in a SF diagram but cognitively linked in our mental models as belonging to a single

Jacques LeFèvre; Ecole Centrale de Lille

53

Decoupling Processes in Block-and-ash Flows  

NASA Astrophysics Data System (ADS)

Lava dome collapse and collapse of lava flow fronts generate short-lived, highly mobile block-and-ash flows, usually comprising three components, a high-density, ground-hugging basal avalanche, a low-density ash cloud surge and a more dilute ash cloud on top. Generally the basal avalanche is valley-confined whereas the overlying surge has the ability to decouple from the dense basal part, overtop topographic barriers and affect greater areas than the basal avalanche, hence posing a larger hazard to the population. These processes have been observed at several volcanoes, e.g. Unzen (Japan), Merapi (Indonesia) and Soufriere Hills (Montserrat), resulting often in the loss of lives. Decoupling is often accentuated by topographic obstructions causing blocking or deflecting of the basal avalanche. Currently laboratory flume experiments are being undertaken to examine the factors initiating and influencing the decoupling processes of block-and-ash flows. A better understanding of the flow dynamics of a moving block-and-ash flow and of the interaction with the underlying substrate and topographic irregularities will provide better hazard zone delineation maps for the future. The experimental results will be used to investigate the emplacement of the block-and-ash flows at Mount Tarawera, New Zealand, where the deposits show indicators of possible decoupling processes during the AD 1305 Kaharoa eruptive episode.

Hanenkamp, E.; Davies, T.

2009-05-01

54

Automatic Translation of a Process Level Petri-Net to a Ladder Diagram  

NASA Astrophysics Data System (ADS)

Major part of discrete industrial automation hardware is controlled by Programmable Logic Controllers (PLCs). While Petri-nets (PNs) have been proposed by many researchers for modelling shop floor discrete control, the majority of the world PLCs are programmed using ladder diagrams (LD) and significant portion of them cannot be programmed using another language. This paper proposes hierarchical approach to translating PN to LD: for describing the high level process, it introduces automatic translation technique of process level PN, while utilizing a recently developed method (for translating PN to Boolean logic) for translating the embedded tasks to a LD. Interestingly, the generated LD code enables the reconstruction of the original Petri-net.

Cohen*, Yuval; Wang, Ming-En; Bidanda, Bopaya

55

Student Understanding of the Physics and Mathematics of Process Variables in P-V Diagrams  

NSDL National Science Digital Library

Students in an upper-level thermal physics course were asked to compare quantities related to the First Law of Thermodynamics along with similar mathematical questions devoid of all physical context. We report on a comparison of student responses to physics questions involving interpretation of ideal gas processes on P-V diagrams and to analogous mathematical qualitative questions about the signs of and comparisons between the magnitudes of various integrals. Student performance on individual questions combined with performance on the paired questions shows evidence of isolated understanding of physics and mathematics. Some difficulties are addressed by instruction.

Pollock, Evan B.; Thompson, John R.; Mountcastle, Donald B.

2009-06-24

56

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

57

Complex Causal Process Diagrams for Analyzing the Health Impacts of Policy Interventions  

PubMed Central

Causal diagrams are rigorous tools for controlling confounding. They also can be used to describe complex causal systems, which is done routinely in communicable disease epidemiology. The use of change diagrams has advantages over static diagrams, because change diagrams are more tractable, relate better to interventions, and have clearer interpretations. Causal diagrams are a useful basis for modeling. They make assumptions explicit, provide a framework for analysis, generate testable predictions, explore the effects of interventions, and identify data gaps. Causal diagrams can be used to integrate different types of information and to facilitate communication both among public health experts and between public health experts and experts in other fields. Causal diagrams allow the use of instrumental variables, which can help control confounding and reverse causation.

Joffe, Michael; Mindell, Jennifer

2006-01-01

58

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

59

Ecohydrologic process modeling of mountain block groundwater recharge.  

PubMed

Regional mountain block recharge (MBR) is a key component of alluvial basin aquifer systems typical of the western United States. Yet neither water scientists nor resource managers have a commonly available and reasonably invoked quantitative method to constrain MBR rates. Recent advances in landscape-scale ecohydrologic process modeling offer the possibility that meteorological data and land surface physical and vegetative conditions can be used to generate estimates of MBR. A water balance was generated for a temperate 24,600-ha mountain watershed, elevation 1565 to 3207 m, using the ecosystem process model Biome-BGC (BioGeochemical Cycles) (Running and Hunt 1993). Input data included remotely sensed landscape information and climate data generated with the Mountain Climate Simulator (MT-CLIM) (Running et al. 1987). Estimated mean annual MBR flux into the crystalline bedrock terrain is 99,000 m(3) /d, or approximately 19% of annual precipitation for the 2003 water year. Controls on MBR predictions include evapotranspiration (radiation limited in wet years and moisture limited in dry years), soil properties, vegetative ecotones (significant at lower elevations), and snowmelt (dominant recharge process). The ecohydrologic model is also used to investigate how climatic and vegetative controls influence recharge dynamics within three elevation zones. The ecohydrologic model proves useful for investigating controls on recharge to mountain blocks as a function of climate and vegetation. Future efforts will need to investigate the uncertainty in the modeled water balance by incorporating an advanced understanding of mountain recharge processes, an ability to simulate those processes at varying scales, and independent approaches to calibrating MBR estimates. PMID:19702780

Magruder, Ian A; Woessner, William W; Running, Steve W

2009-08-20

60

Nursing job process analysis from viewpoint of process design by job diagram.  

PubMed

Recently Japan demands more and more quality assurance in clinical practice. Several aspects of issues have been discussed to provide significant suggestions for nursing quality assurance. In the quality management field, Process Design, which is known to contribute to quality assurance, is an important frame. This study attempts to analyze the nursing job process from the viewpoint of process design. As a result, some knowledge on the nursing job process could be comprehended. Process analysis from the viewpoint of Process Design is considered significant in nursing practice and further improvement of its technique and application is a challenge for the future. PMID:17102465

Dannoue, Hideo; Tsuru, Satoko; Munechika, Masahiko; Iizuka, Yoshinori

2006-01-01

61

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

62

Structure of Block Copolymer Hydrogel Formed by Complex Coacervate Process  

NASA Astrophysics Data System (ADS)

Complex coacervation occurs when oppositely charged polyelectrolytes associate in solution, forming dense micron-sized droplets. Hydrogels with coacervate block domains were formed by mixing two ABA and A'BA' triblock copolymer solutions in water where the A and A' blocks are oppositely charged. Small-angle neutron scattering (SANS) was used to investigate the structure of hydrogels formed by ABA triblock copolymers (A block: poly(allyl glycidyl ether) functionalized with guanidinium (A) or sulfonate (A'), B block: poly(ethylene oxide)). By using an appropriate fitting model, structural information such as coacervate core block radius and water volume fraction w can be extracted from SANS data. The results reveal that w in the coacervate core block was significantly higher than in conventional triblock copolymer hydrogels where microphase separation is driven by the hydrophobicity of the core-forming blocks.

Choi, Soohyung; Ortony, Julia; Krogstad, Daniel; Spruell, Jason; Lynd, Nathaniel; Han, Songi; Kramer, Edward

2012-02-01

63

40 CFR 68.65 - Process safety information.  

Code of Federal Regulations, 2011 CFR

...shall include at least the following: (i) A block flow diagram or simplified process flow diagram; (ii) Process chemistry; (iii) Maximum intended inventory; (iv) Safe upper and lower limits for such items as temperatures,...

2011-07-01

64

Identification of the states of the processes at liquid cathodes under potentiostatic conditions using semantic diagram models  

NASA Astrophysics Data System (ADS)

A technique is described for constructing semantic diagram models of the electrolysis at a liquid cathode in a salt halide melt under potentiostatic conditions that are intended for identifying the static states of this system that correspond to certain combinations of the electrode processes or the processes occurring in the volumes of salt and liquid-metal phases. Examples are given for the discharge of univalent and polyvalent metals.

Smirnov, G. B.; Markina, S. E.; Tomashevich, V. G.

2012-08-01

65

Master Logic Diagram: method for hazard and initiating event identification in process plants.  

PubMed

Master Logic Diagram (MLD), a method for identifying events initiating accidents in chemical installations, is presented. MLD is a logic diagram that resembles a fault tree but without the formal mathematical properties of the latter. MLD starts with a Top Event "Loss of Containment" and decomposes it into simpler contributing events. A generic MLD has been developed which may be applied to all chemical installations storing toxic and/or flammable substances. The method is exemplified through its application to an ammonia storage facility. PMID:12573826

Papazoglou, I A; Aneziris, O N

2003-02-28

66

Block copolymers useful for enhanced oil recovery processes  

Microsoft Academic Search

This patent describes a method for permeability control of a subterranean formation and for enhancing oil recovery from the subterranean formation. The method comprising injecting into the subterranean formation an aqueous solution comprised of a block copolymer having the structural form of ABA triblock or (AB){sub n} multiblock wherein A is a crosslinkable polymer, B is a non-crosslinkable polymer or

Shu

1989-01-01

67

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

68

Metastable region of phase diagram: optimum parameter range for processing ultrahigh molecular weight polyethylene blends.  

PubMed

Numerous studies suggest that two-phase morphology and thick interface are separately beneficial to the viscosity reduction and mechanical property maintainence of the matrix when normal molecular weight polymer (NMWP) is used for modification of ultrahigh molecular weight polyethylene (UHMWPE). Nevertheless, it is very difficult to obtain a UHMWPE/NMWP blend which may demonstrate both two-phase morphology and thick interface. In this work, dissipative particle dynamics simulations and Flory-Huggins theory are applied in predicting the optimum NMWP and the corresponding conditions, wherein the melt flowability of UHMWPE can be improved while its mechanical properties can also be retained. As is indicated by dissipative particle dynamics simulations and phase diagram calculated from Flory-Huggins theory, too small Flory-Huggins interaction parameter (?) and molecular chain length of NMWP (N(NMWP)) may lead to the formation of a homogeneous phase, whereas very large interfacial tension and thin interfaces might also appear when parameters N(NMWP) and ? are too large. When these parameters are located in the metastable region of the phase diagram, however, two-phase morphology occurs and interfaces of the blends are extremely thick. Therefore, metastable state is found to be advisable for both the viscosity reduction and mechanical property improvement of the UHMWPE/NMWP blends. PMID:22038460

Gai, Jing-Gang; Zuo, Yuan

2011-10-27

69

76 FR 2919 - Outer Continental Shelf Official Protraction Diagram and Supplemental Official Outer Continental...  

Federal Register 2010, 2011, 2012, 2013

...OCS Block Diagrams (SOBDs) located in the Pacific Ocean near Eureka, California...Protraction Diagram in the Pacific Ocean Description/Date NK10-10...Block Diagrams in the Pacific Ocean, all located within Official...

2011-01-18

70

Self-assembly and chemical processing of block copolymers: a roadmap towards a diverse array of block copolymer nanostructures.  

PubMed

Block copolymers can yield a diverse array of nanostructures. Their assembly structures are influenced by their inherent structures, and the wide variety of structures that can be prepared especially becomes apparent when one considers the number of routes available to prepare block copolymer assemblies. Some examples include self-assembly, directed assembly, coupling, as well as hierarchical assembly, which can yield assemblies having even higher structural order. These assembly routes can also be complemented by processing techniques such as selective crosslinking and etching, the former technique leading to permanent structures, the latter towards sculpted and the combination of the two towards permanent sculpted structures. The combination of these pathways provides extremely versatile routes towards an exciting variety of architectures. This review will attempt to highlight destinations reached by LIU Guojun and coworkers following these pathways. PMID:23740360

Ian, Wyman; Guojun, Liu

2013-06-01

71

Block copolymers useful for enhanced oil recovery processes  

SciTech Connect

This patent describes a method for permeability control of a subterranean formation and for enhancing oil recovery from the subterranean formation. The method comprising injecting into the subterranean formation an aqueous solution comprised of a block copolymer having the structural form of ABA triblock or (AB){sub n} multiblock wherein A is a crosslinkable polymer, B is a non-crosslinkable polymer or a polymer having low reactivity to crosslinking agents, n is a number of at least 2 and a crosslinking agent. Wherein A is selected from the group consisting of polyacrylic acid, partially hydrolyzed polyacrylamide, highly hydrolyzed polyacrylamide, partially hydrolyzed polyacrylic ester, highly hydrolyzed polyacrylic ester, polyvinyl alcohol and mixtures thereof and B is selected from the group consisting of polyacrylamide, partially hydrolyzed polyacrylamide, polyalkylene ethers, polyvinyl alcohol and polyvinylpyridine.

Shu, P.

1989-10-03

72

Synthesis of block copolymers by combination of ATRP and photoiniferter processes  

Microsoft Academic Search

BACKGROUND: Block copolymers of monomers polymerizing by different mechanisms can be prepared by the transformation approach. A wide range of combinations of different polymerization modes has been reported in the literature. In this work, the transformation approach was further extended to the preparation of block copolymers by combining atom transfer radical polymerization (ATRP) and photoiniferter processes. RESULTS: Photoactive morpholine-4-dithiocarbamate-terminated polystyrene

Yasemin Yuksel Durmaz; Bunyamin Karagoz; Niyazi Bicak; Yusuf Yagci

2008-01-01

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

Modelling for business process design: a methodology based on causal loop diagram  

Microsoft Academic Search

Business process modelling is an essential part of developing a process improvement project. Current modelling methods always fall short in analysing capability to assist modelling users with process design. To describe cause-and-effect relationships among process variables clearly and then to provide a complete understanding of the business process both to the developer and to the end-user, the modelling approach described

Ruinan Gong; Qing Li; Xin Liu; Qing Wang

2004-01-01

76

MEAT PROCESSING TECHNOLOGIES MAY HELP BLOCK TOXOPLASMA TRANSMISSION  

Technology Transfer Automated Retrieval System (TEKTRAN)

To help consumers reduce the risk of contracting toxoplasmosis from infected pork requires a mutifaceted approach that includes on-farm prevention procedures and processing and preparation procedures. In studies at the U.S. Department of Agriculture's (USDA) Agricultural Research Service, Beltsville...

77

Continuous process for ATRP: Synthesis of homo and block copolymers  

Microsoft Academic Search

Continuous ATRP of MMA was carried out in a flow tubular reactor with varying flow rate, temperature, and [monomer]\\/[initiator] ratios. Changing the flow rate directly relates to the reaction time. This process produces polymer continuously with the conversion increasing with decreasing flow rate. The molecular weight (relating to the flow rate) increases linearly with conversion which is also observed when

Tetsuya Noda; Anthony J. Grice; Martin E. Levere; David M. Haddleton

2007-01-01

78

Use of influence diagrams and neural networks in modeling semiconductor manufacturing processes  

Microsoft Academic Search

An adaptive learning architecture for modeling manufacturing processes involving several control variables is described. The use of this architecture to process modeling and recipe synthesis for deposition rate, stress, and film thickness in low-pressure chemical vapor deposition (LPCVD) of undoped polysilicon is discussed. In this architecture the model for a process is generated by combining the qualitative knowledge of human

Fariborz Nadi; Alice M. Agogino; David A. Hodges

1991-01-01

79

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

80

Process optimization diagram based on FEM simulation for extrusion of AZ31 profile  

Microsoft Academic Search

The ram speed and the billet temperature are the primary process variables that determine the quality of the extruded magnesium profile and the productivity of the extrusion operation. The optimization of the extrusion process concerns the interplay between these two variables in relation to the extrudate temperature and the peak extrusion pressure. The 3D computer simulations were performed to determine

Gang LIU; Jie ZHOU; J DUSZCZYK

2008-01-01

81

A generalized framework for computing bifurcation diagrams using process simulation programs  

Microsoft Academic Search

Interest in discovering multiple steady-state solutions for reaction and separation processes grew exponentially in the 1990s. Process simulators like ASPEN PLUS, CHEMCAD, HYSYS, and PRO\\/II are designed to obtain at best one solution. Simulation programs can find multiple solutions only by the expenditure of much effort. Here, a bifurcation technique using arclength continuation is presented that can be incorporated as

Arjun Vadapalli; J. D. Seader

2001-01-01

82

A software model for GPS receiver signal processing blocks used in educational environment  

Microsoft Academic Search

This paper presents in the first part a short overview of the Global Positioning System (shortly GPS), used to explain the software approach described in the paper's body. This software approach makes possible to emphasize the main aspects of signal processing blocks in GPS receiver, illustrating the entire process involved in coordinates calculation. The software model is implemented and tested

R. Arsinte

2010-01-01

83

Design of PPU framework for processing ordered data blocks in the cluster environment  

Microsoft Academic Search

With the development of parallel computing, processing mass data in the cluster environment becomes a hotspot in research. A typical scenario is that the data blocks needed to be parallelization processed is ordered, but there is no common framework adapting to this scenario. Under this background, a common framework named PPU is proposed in this paper to resolve the parallelization

Jun Liang; Lin Xiao; Bao Ling Wu

2010-01-01

84

Application of quaternary phase diagrams to compound semiconductor processing. Progress report, April 1, 1988--December 31, 1988  

SciTech Connect

This paper considers the application of quaternary phase diagrams to understanding and predicting the behavior of II-VI thin film interfaces in photovoltaic devices under annealing conditions. Examples, listed in a table, include semiconductor/insulator/semiconductor (SIS) layered structures, II-VI/II-VI and III-V/II-VI epitaxial heterojunctions and oxidation of ternary compounds. Solid solubility is taken into account for quaternary phase diagrams of semiconductor systems. Using free energies of formation, a method to calculate the quaternary phase diagrams was developed. The Ga-As-II-VI and Cd-Te-Zn-O phase diagrams are reviewed as examples of quaternary phase diagrams without and with solid solubility.

Schwartzman, A.

1988-12-31

85

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

86

Aphasia and the Diagram Makers Revisited: an Update of Information Processing Models  

PubMed Central

Aphasic syndromes from diseases such as stroke and degenerative disorders are still common and disabling neurobehavioral disorders. Diagnosis, management and treatment of these communication disorders are often dependent upon understanding the neuropsychological mechanisms that underlie these disorders. Since the work of Broca it has been recognized that the human brain is organized in a modular fashion. Wernicke realized that the types of signs and symptoms displayed by aphasic patients reflect the degradation or disconnection of the modules that comprise this speech-language network. Thus, he was the first to propose a diagrammatic or information processing model of this modular language-speech network. Since he first published this model many new aphasic syndromes have been discovered and this has led to modifications of this model. This paper reviews some of the early (nineteenth century) models and then attempts to develop a more up-to-date and complete model.

2006-01-01

87

Aphasia and the diagram makers revisited: an update of information processing models.  

PubMed

Aphasic syndromes from diseases such as stroke and degenerative disorders are still common and disabling neurobehavioral disorders. Diagnosis, management and treatment of these communication disorders are often dependent upon understanding the neuropsychological mechanisms that underlie these disorders. Since the work of Broca it has been recognized that the human brain is organized in a modular fashion. Wernicke realized that the types of signs and symptoms displayed by aphasic patients reflect the degradation or disconnection of the modules that comprise this speech-language network. Thus, he was the first to propose a diagrammatic or information processing model of this modular language-speech network. Since he first published this model many new aphasic syndromes have been discovered and this has led to modifications of this model. This paper reviews some of the early (nineteenth century) models and then attempts to develop a more up-to-date and complete model. PMID:20396501

Heilman, Kenneth M

2006-09-20

88

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

89

Identification of the states of the processes that occur on solid cathodes in the potentiostatic electrolysis mode using semantic diagram models  

NASA Astrophysics Data System (ADS)

A procedure is proposed to construct semantic diagram models for the electrolysis on a solid cathode in a salt halide melt under potentiostatic conditions. These models are intended to identify the static states of the system that correspond to a certain combination of the processes occurring on an electrode and in the system volume. Examples for discharging of univalent and polyvalent metals are given.

Smirnov, G. B.; Markina, S. E.; Tomashevich, V. G.

2011-02-01

90

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

91

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

92

Application of quaternary phase diagrams to compound semiconductor processing. Progress report, April 1, 1988--December 31, 1988.  

National Technical Information Service (NTIS)

This paper considers the application of quaternary phase diagrams to understanding and predicting the behavior of II-VI thin film interfaces in photovoltaic devices under annealing conditions. Examples, listed in a table, include semiconductor/insulator/s...

A. Schwartzman

1988-01-01

93

Social Aspects of Aging. Module A-4. Block A. Basic Knowledge of the Aging Process.  

ERIC Educational Resources Information Center

This instructional module on social aspects of aging is one in a block of 10 modules designed to provide the human services worker who works with older adults with basic information regarding the aging process. An introduction provides an overview of the module content. A listing of general objectives follows. Four sections present informative…

Harvey, Dexter; Cap, Orest

94

Military Curricula for Vocational & Technical Education. Metals Processing Specialist, Block VII, Classroom Course 13-8.  

ERIC Educational Resources Information Center

These curriculum materials are the fourth section of a four-part, secondary-postsecondary-level course in metals processing. The course is one of a number of military-developed curriculum packages selected for adaptation to vocational instruction and curriculum development in a civilian setting. Block VII deals with heat treating, hardness…

Ohio State Univ., Columbus. National Center for Research in Vocational Education.

95

Military Curricula for Vocational & Technical Education. Metals Processing Specialist, Block VII, Classroom Course 13-8.  

ERIC Educational Resources Information Center

|These curriculum materials are the fourth section of a four-part, secondary-postsecondary-level course in metals processing. The course is one of a number of military-developed curriculum packages selected for adaptation to vocational instruction and curriculum development in a civilian setting. Block VII deals with heat treating, hardness…

Ohio State Univ., Columbus. National Center for Research in Vocational Education.

96

Scaffolding cognitive and metacognitive processes in low verbal ability learners: Use of diagrams in computer-based training environments  

Microsoft Academic Search

This study investigated how instructionalstrategies can support learners' knowledgeacquisition and metacomprehension of complexsystems in a computer-based trainingenvironment, and how individual characteristicsinteract with these manipulations. Incorporating diagrams into the trainingfacilitated performance on measures ofintegrative knowledge (i.e., the integrationand application of task-relevant knowledge),but had no significant effect on measures ofdeclarative knowledge (i.e., mastery of basicfactual knowledge). Diagrams additionallyfacilitated the development of accurate

Haydee M. Cuevas; Stephen M. Fiore; Randall L. Oser

2002-01-01

97

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

98

Automated Processing of LASCO Coronal Images: Spurious Point-Source-Filtering and Missing-Blocks Correction  

NASA Astrophysics Data System (ADS)

We report on automated procedures for correcting the images of the LASCO coronagraph for i) spurious quasi-point-sources such as the impacts of cosmic rays, stars, and planets, and ii) the absence of signal due to transmission errors or dropouts, which results in blocks of missing information in the images. Correcting for these undesirable artifacts is mandatory for all quantitative works on the solar corona that require data inversion and/or long series of images, for instance. The nonlinear filtering of spike noise or point-like objects is based on mathematical morphology and implements the procedure opening by morphological reconstruction. However, a simple opening filter is applied whenever the fractional area of corrupted pixels exceeds 50 % of the original image. We describe different strategies for reconstructing the missing information blocks. In general, it is possible to implement the method of averaged neighbors using the two images obtained immediately before and after the corrupted image. For the other cases, and in particular when missing blocks overlapped in three images, we developed an original procedure of weighted interpolation along radial profiles from the center of the Sun that intercept the missing block(s). This procedure is also adequate for the saturated images of bright planets (such as Venus) that bleed along the neighboring pixels. Missing blocks in polarized images may generally be reconstructed using the associated unpolarized image of the same format. But in the case of overlapping missing blocks, we implemented our procedure of weighted interpolation. All tests performed on numerous LASCO-C2 images at various periods of solar activity (i.e. varying complexity of the structure of the corona) demonstrate the excellent performance of these new procedures, with results vastly superior to the methods implemented so far in the pipeline-processing of the LASCO images.

Pagot, E.; Lamy, P.; Llebaria, A.; Boclet, B.

2013-09-01

99

Transverse Process and Needles of Medial Branch Block to Facet Joint as Landmarks for Ultrasound-Guided Selective Nerve Root Block  

PubMed Central

Background Selective lumbar nerve root block (SNRB) is generally accepted as an effective treatment method for back pain with sciatica. However, it requires devices producing radioactive materials such as C-arm fluoroscopy. This study evaluated the usefulness of the longitudinal view of transverse process and needles for medial branch block as landmarks under ultrasonography. Methods We performed selective nerve root block for 96 nerve roots in 61 patients under the guidance of ultrasound. A curved probe was used to identify the facet joints and transverse processes. Identifying the lumbar nerve roots under the skin surface and ultrasound landmarks, the cephalad and caudal medial branch blocks were undertaken under the transverse view of sonogram first. A needle for nerve root block was inserted between the two transverse processes under longitudinal view, while estimating the depth with the needle for medial branch block. We then injected 1.0 mL of contrast medium and checked the distribution of the nerve root with C-arm fluoroscopy to evaluate the accuracy. The visual analog scale (VAS) was used to access the clinical results. Results Seven SNRBs were performed for the L2 nerve root, 15 for L3, 49 for L4, and 25 for L5, respectively. Eighty-six SNRBs (89.5%) showed successful positioning of the needles. We failed in the following cases: 1 case for the L2 nerve root; 2 for L3; 3 for L4; and 4 for L5. The failed needles were positioned at wrong leveled segments in 4 cases and inappropriate place in 6 cases. VAS was improved from 7.6 ± 0.6 to 3.5 ± 1.3 after the procedure. Conclusions For SNRB in lumbar spine, the transverse processes under longitudinal view as the ultrasound landmark and the needles of medial branch block to the facet joint can be a promising guidance.

Kim, Daehee; Choi, Donghyuk; Kim, Chungyoung; Kim, Jeongseok

2013-01-01

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

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

102

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

103

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

104

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

105

Forming Limit Diagrams of Zircaloy4 and Zirlo Sheets for Stamping Process of Spacer Grids of Nuclear Fuel Rod  

Microsoft Academic Search

We investigated the theoretical forming limit models for Zircaloy-4 and Zirlo used for spacer grid of nuclear fuel rods. Tensile tests were performed to obtain stress-strain curves and anisotropic coefficients, such as r-values. The experimental forming limit diagrams (FLD) for two materials were obtained by dome stretching tests following the specification of NUMISHEET 96. Theoretical FLD depends on forming limit

Yunmi Seo; Hong Chul Hyun; Hyungyil Lee; Naksoo Kim

2011-01-01

106

An improved Voronoi diagram model based on fuzzy interval theory  

Microsoft Academic Search

Considering that the application of traditional Voronoi diagram in spatial division ignores the impact of road hierarchy, speed, road-block, one-way and some other influential factors on proximity, an improved Voronoi diagram model based on fuzzy interval theory is proposed in this paper by introducing different influential factors into the construction of Voronoi diagram in order to enhance the accuracy of

Beibei Yan; Zhenfeng Shao; Yang Zhou; Qimin Cheng

2009-01-01

107

Hierarchical Structuring in Block Copolymer Nanocomposites through Two Phase Separation Processes Operating on Different Time Scales  

NASA Astrophysics Data System (ADS)

The ability to assemble nanoparticles (NPs) hierarchically, with control over their positioning and spacing, is considered an important step toward applications where collective properties are sensitive to the morphology of the NP aggregates. Using block copolymers as matrices for organizing metal and semiconductor NPs through microphase separation leads to hierarchical NP assemblies, but control over NP location within the hosting domains is usually limited to one-dimensional distribution. The presentation will demonstrate by both experimental evidence and mesoscopic simulations that functionalizing the nanoparticles with polymeric ligands that are incompatible with both blocks, but to considerably different extents, leads to hexagonally-packed NP assemblies in every other domain of the copolymer film. Such choice of polymeric components leads to a situation where the microphase separation of the block copolymer precedes the macrophase separation of the NPs from the copolymer. Thus, when the latter finally sets in, it occurs within the confines of the domains hosting the NPs. In the hexagonally-packed arrays formed by this process, the interparticle distances are controlled by the thickness of the nanoparticle coating.

Shenhar, Roy; Ploshnik, Elina; Halevi, Amit; Ben-Lulu, Meirav; Mueller, Axel H. E.; Langner, Karol M.; Fraaije, Johannes G. E. M.; Agur Sevink, G. J.

2013-03-01

108

Women and writer's block: An exploration of social and cultural influences upon the writing processes of five graduate student writers  

Microsoft Academic Search

This research investigates social and cultural influences such as gender, ethnicity, socioeconomic class, family, and religion on the incidence of writer's block and writing apprehension. The writing processes of five graduate women writers were examined and, in relation to the above factors, comparisons were made among the following variables: overall tendency to block or to experience apprehension, daily levels of

Susan Marie Latta

1995-01-01

109

MOVIE: a hardware building block for software-only real-time video processing  

NASA Astrophysics Data System (ADS)

The goal of the MOVIE VLSI chip is to facilitate the development of software-only solutions for real time video processing applications. This chip can be seen as a building block for SIMD arrays of processing elements and its architecture has been designed so as to facilitate high level language programming. The basic architecture building block associates a sub-array of computational processors with a I/O processor. A module can be seen as a small linear, systolic-like array of processing elements, connected at each end to the I/O processor. The module can communicate with its two nearest neighbors via two communication ports. The chip architecture also includes three 16-bit video ports. One important aspect in the programming environment is the C-stolic programming language. C-stolic is a C-like language augmented with parallel constructs which allow to differentiate between the array controller variables (scalar variables) and the local variables in the array structure (systolic variables). A statement operating on systolic variables implies a simultaneous execution on all the cells of the structure. Implementation examples of MOVIE-based architectures dealing with video compression algorithms are given.

Barzic, Ronan; Bouville, Christian; Charot, Francois; Le Fol, Gwendal; Lemonnier, Pascal; Wagner, Charles

1996-03-01

110

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

111

Nickel ferrite aerogels with monodisperse nanoscale building blocks--the importance of processing temperature and atmosphere.  

PubMed

Using two-step (air/argon) thermal processing, sol-gel-derived nickel-iron oxide aerogels are transformed into monodisperse, networked nanocrystalline magnetic oxides of NiFe(2)O(4) with particle diameters that can be ripened with increasing temperature under argon to 4.6, 6.4, and 8.8 nm. Processing in air alone yields poorly crystalline materials; heating in argon alone leads to single phase, but diversiform, polydisperse NiFe(2)O(4), which hampers interpretation of the magnetic properties of the nanoarchitectures. The two-step method yields an improved model system to study magnetic effects as a function of size on the nanoscale while maintaining the particles within the size regime of single domain magnets, as networked building blocks, not agglomerates, and without stabilizing ligands capping the surface. PMID:19206611

Pettigrew, Katherine A; Long, Jeffrey W; Carpenter, Everett E; Baker, Colin C; Lytle, Justin C; Chervin, Christopher N; Logan, Michael S; Stroud, Rhonda M; Rolison, Debra R

2008-04-01

112

Performance of Three Mode-Meter Block-Processing Algorithms for Automated Dynamic Stability Assessment  

SciTech Connect

The frequency and damping of electromechanical modes offer considerable insight into the dynamic stability properties of a power system. The performance properties of three block-processing algorithms from the perspective of near real-time automated stability assessment are demonstrated and examined. The algorithms are: the extended modified Yule Walker (YW); extended modified Yule Walker with Spectral analysis (YWS); and numerical state-space subspace system identification(N4SID) algorithm. The YW and N4SID have been introduced in previous publications while the YWS is introduced here. Issues addressed include: stability assessment requirements; automated subset selecting identified modes; using algorithms in an automated format; data assumptions and quality; and expected algorithm estimation performance.

Trudnowski, Daniel J.; Pierre, John W.; Zhou, Ning; Hauer, John F.; Parashar, Manu

2008-05-31

113

Hydrogeochemical processes controlling the high fluoride concentration in groundwater: a case study at the Boden block area, Orissa, India  

Microsoft Academic Search

The present investigation reports the assessment of hydrochemical\\/geochemical processes controlling the concentration of fluoride\\u000a in groundwater of a village in India (Boden block, Orissa). Boden block is one of the severely affected fluoride-contaminated\\u000a areas in the state of Orissa (India). The sampling and subsequent analysis of water samples of the study area was carried\\u000a out following standard prescribed methods. The

R. K. Dey; S. K. Swain; Sulagna Mishra; Prachi Sharma; Tanushree Patnaik; V. K. Singh; B. N. Dehury; Usha Jha; R. K. Patel

114

Forming Limit Diagrams of Zircaloy-4 and Zirlo Sheets for Stamping Process of Spacer Grids of Nuclear Fuel Rod  

NASA Astrophysics Data System (ADS)

We investigated the theoretical forming limit models for Zircaloy-4 and Zirlo used for spacer grid of nuclear fuel rods. Tensile tests were performed to obtain stress-strain curves and anisotropic coefficients, such as r-values. The experimental forming limit diagrams (FLD) for two materials were obtained by dome stretching tests following the specification of NUMISHEET 96. Theoretical FLD depends on forming limit model and yield criterion. To obtain the right hand side of FLD, we applied the forming limit models (Swift's diffuse necking, Marciniak-Kuczynski damage defect, Storen-Rice's vertex theory) to Zircaloy-4 and Zirlo sheets. Hill's local necking theory was adopted for the left side of FLD. To consider the anisotropy of sheets, the yield criteria of Hill (1948) and Hosford (1979) were applied. Comparing the predicted curves with the experimental data, we found that the FLD for Zircaloy-4 can be described by the Swift model with the Hill 48 yield criterion, while the FLD for Zirlo can be explained by the Storen-Rice model and the Hosford yield criterion (a = 8).

Seo, Yunmi; Hyun, Hong Chul; Lee, Hyungyil; Kim, Naksoo

2011-08-01

115

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

116

Extending and Formalizing UML 2.0 Activity Diagrams for the Specification of Time-Constrained Business Processes  

Microsoft Academic Search

In real world, most business processes are subject to time constraints. Equally important as the execution of a process is the time in which it is to be performed. A time constrained business process can be defined as a process whose correct behavior depends not only on the results obtained, but also on the time it is carried out. UML

Kawtar Benghazi Akhlaki; José Luis Garrido; Manuel Noguera; María Visitación Hurtado; Lawrence Chung

2010-01-01

117

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

118

A new system for reducing the bonding process cycle time and increasing the accuracy of bonding diagram  

Microsoft Academic Search

The high intensity semiconductor requires tight collaboration between design and manufacturing not only to reduce the total throughput time from product development to manufacturing, but also to improve the quality. Especially the bonding process of packaging has become more sophisticated and critical to make final products. Therefore the bonding process is systemized to improve the productivity and yields. It automatically

Oh Chang-joon; Young-Joong Lee; Young-joon Han; Chung-Sam Ahn

2004-01-01

119

A multiscale modeling study of loss processes in block-copolymer-based solar cell nanodevices.  

PubMed

Flexible photovoltaic devices possess promising perspectives in opto-electronic technologies, where high mobility and/or large-scale applicability are important. However, their usefulness in such applications is currently still limited due to the low level of optimization of their performance and durability. For the improvement of these properties, a better understanding and control of small-scale annihilation phenomena involved in the photovoltaic process, such as exciton loss and charge carrier loss, is necessary, which typically implicates multiple length- and time-scales. Here, we study the causes for their occurrence on the example of nanostructured diblock- and triblock-copolymer systems by making use of a novel solar-cell simulation algorithm and explore new routes to optimize their photovoltaic properties. A particular focus is set on the investigation of exciton and charge carrier loss phenomena and their dependence on the inter-monomeric interaction strength, chain architecture, and external mechanical loading. Our simulation results reveal that in the regime from low up to intermediate ?-parameters an increasing number of continuous percolation paths is created. In this parameter range, the internal quantum efficiency (IQE) increases up to a maximum, characterized by a minimum in the number of charge losses due to charge recombination. In the regime of high ?-parameters both block-copolymer systems form nanostructures with a large number of bottlenecks and dead ends. These lead to a large number of charge losses due to charge recombination, charge trapping, and a deteriorated exciton dissociation, resulting in a significant drop in the IQE. Moreover, we find that the photovoltaic performance of the triblock-copolymer material decreases with increasing mechanical loading, caused by a growing number of charge losses due to charge recombination and charge accumulation. Finally, we demonstrate that the process of charge trapping in defects can be reversed by changing the polarity of the electrodes, which confers these materials the ability to be used as charge storage media. PMID:23485320

Donets, Sergii; Pershin, Anton; Christlmaier, Martin J A; Baeurle, Stephan A

2013-03-01

120

The first new application of the mathematical theory of stochastic processes to lunar and planetary science: topography profile diagrams of Mars  

NASA Astrophysics Data System (ADS)

The Mathematical Statistics Theory (MST) and the Mathematical Theory of Stochastic Processes (MTSP) are different branches of the more general Mathematical Probability Theory (MPT) that represents different aspects of some physical processes we can analyze using mathematics. Each model of a stochastic process according to MTSP can provide one or more interpretations in MST domain. Large body of work on the impact crater statistics according to MST was already done many years ago, for e.g., where Cratering Chronology Diagrams (CCD) were shown in log/log scale, showing Cum. Crater Frequency [N km-2] that is the function of Age [years] for some particular crater diameter. However, all this is only one possible representation in MST domain, of the bombardment of the planetary surface modeled as stochastic process according to MTSP. The idea that other representations in MST domain of the same stochastic process from MTSP are possible was recently presented [G. Salamuniæcar, Adv. Space Res. in press]. The importance of the approach is that each such interpretation can provide large amount of new information. Topography Profile Diagrams (TPDs) are one example, that with MOLA data provide us with large amount of new information regarding history of Mars. TPDs consists of [34thLPS #1403]: (1) Topography-Profile Curve (TPC) that is representation of the planet topography, (2) Density-of-Craters Curve (DCC) that represents density of craters, (3) Filtered-DCC (FDCC) that represents DCC filtered by a low-pass filter included with the purpose of reducing the noise and (4) Level-of-Substance-Over-Time Curve (LSOTC). While definition of TPC uniquely corresponds to way we will compute it, the same is not also the case with DCC and FDCC. While DCC depends on algorithms for computing crater altitude according to the topography, center coordinates and radius of impact crater [34thLPS #1409], FDCC depends on the architecture of the custom designed low-pass filter for filtering DCC [34thLPS #1415]. However all variations of DCC and FDCC including the different input craters data-sets confirmed correlation between density of craters and topographic altitude over 70˜ 80% of the planet surface. For the assumption that ocean primarily caused noted correlation, LSOTC additionally for the first time offers mathematical approach how to compute how level of ocean was changing over time [6thMars #3187]. Accordingly, conclusion is that TPDs are the first new practical application of MTSP to the Lunar and Planetary Science (LPS).

Salamuniccar, G.

121

Military Curricula for Vocational & Technical Education. Metals Processing Specialist, Blocks III and IV, Classroom Course 13-6.  

ERIC Educational Resources Information Center

|These curriculum materials are the second section of a four-part, secondary-postsecondary-level course in metals processing. The course is one of a number of military-developed curriculum packages selected for adaptation to vocational instruction and curriculum development in a civilian setting. Block III, Introduction to Metallic Arc Welding,…

Ohio State Univ., Columbus. National Center for Research in Vocational Education.

122

Military Curricula for Vocational & Technical Education. Metals Processing Specialist, Blocks I and II, Classroom Course 13-5.  

ERIC Educational Resources Information Center

|These curriculum materials are the first section of a four-part, secondary-postsecondary-level course in metals processing. The course is one of a number of military-developed curriculum packages selected for adaptation to vocational instruction and curriculum development in a civilian setting. Block I, Introduction to Oxyacetylene Welding,…

Ohio State Univ., Columbus. National Center for Research in Vocational Education.

123

Military Curricula for Vocational & Technical Education. Metals Processing Specialist, Blocks I and II, Classroom Course 13-5.  

ERIC Educational Resources Information Center

These curriculum materials are the first section of a four-part, secondary-postsecondary-level course in metals processing. The course is one of a number of military-developed curriculum packages selected for adaptation to vocational instruction and curriculum development in a civilian setting. Block I, Introduction to Oxyacetylene Welding,…

Ohio State Univ., Columbus. National Center for Research in Vocational Education.

124

Military Curricula for Vocational & Technical Education. Metals Processing Specialist, Blocks V and VI, Classroom Course 13-7.  

ERIC Educational Resources Information Center

|These curriculum materials are the third section of a four-part, secondary-postsecondary-level course in metals processing. The course is one of a number of military-developed curriculum packages selected for adaptation to vocational instruction and curriculum development in a civilian setting. Block V, Inert Gas Shielded Welding of High…

Ohio State Univ., Columbus. National Center for Research in Vocational Education.

125

A UV-Blocking Polymer Shell Prevents One-Photon Photoreactions while Allowing Multi-Photon Processes in Encapsulated Upconverting Nanoparticles.  

PubMed

Sun block for nanoparticles: Unintentional photorelease triggered by UV light is a problem in photodynamic therapy. Encapsulating upconverting nanoparticles containing photoswitches in a UV-blocking amphiphilic polymer shuts down the one-photon process and only allows two-photon-driven photochemistry. Thus, UV light is blocked while NIR light can reach the nanoparticle core and trigger photorelease. PMID:24038865

Wu, Tuoqi; Barker, Madeleine; Arafeh, Khaled M; Boyer, John-Christopher; Carling, Carl-Johan; Branda, Neil R

2013-08-23

126

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

127

The geological processes time scale of the Ingozersky block TTG complex (Kola Peninsula)  

NASA Astrophysics Data System (ADS)

Ingozersky block located in the Tersky Terrane of the Kola Peninsula is composed of Archean gneisses and granitoids [1; 5; 8]. The Archaean basement complexes on the regional geological maps have called tonalite-trondemit-gneisses (TTG) complexes [6]. In the previous studies [1; 3; 4; 5; 7] within Ingozersky block the following types of rocks were established: biotite, biotite-amphibole, amphibole-biotite gneisses, granites, granodiorites and pegmatites [2]. In the rocks of the complex following corresponding sequence of endogenous processes observed (based on [5]): stage 1 - the biotitic gneisses formation; 2 - the introduction of dikes of basic rocks; 3 phase - deformation and foliation; 4 stage - implementation bodies of granite and migmatization; 5 stage - implementation of large pegmatite bodies; stage 6 - the formation of differently pegmatite and granite veins of low power, with and without garnet; stage 7 - quartz veins. Previous U-Pb isotopic dating of the samples was done for biotite gneisses, amphibole-biotite gneisses and biotite-amphibole gneisses. Thus, some Sm-Nd TDM ages are 3613 Ma - biotite gnesses, 2596 Ma - amphibole-biotite gnesses and 3493 Ma biotite-amphibole gneisses.. U-Pb ages of the metamorphism processes in the TTG complex are obtained: 2697±9 Ma - for the biotite gneiss, 2725±2 and 2667±7 Ma - for the amphibole-biotite gneisses, and 2727±5 Ma for the biotite-amphibole gneisses. The age defined for the biotite gneisses by using single zircon dating to be about 3149±46 Ma corresponds to the time of the gneisses protolith formation. The purpose of these studies is the age establishing of granite and pegmatite bodies emplacement and finding a geological processes time scale of the Ingozerskom block. Preliminary U-Pb isotopic dating of zircon and other accessory minerals were held for granites - 2615±8 Ma, migmatites - 2549±30 Ma and veined granites - 1644±7 Ma. As a result of the isotope U-Pb dating of the different Ingozerskogo TTG complex rocks, the following age-formation stages are determined: protolith of the biotite gneisses - 3149±46 Ma; metamorphism, deformation of rocks, foliation - 2727±5 - 2725±2 - 2697±9 - 2667±7 Ma, granite bodies formation - 2615±8 Ma and biotite gneisses migmatization - 2549±30 Ma, formation of different pegmatite and granite veins -1644±7 Ma. Author are grateful to Akad. Mitrofanov F.P. and Bayanova T.B. for the consultations. The work is supported by RFBR 12-05-31063, 11-05-00570. 1.Batieva I.D., Belkov I.V. Granitoidnie formacii Kolskogo poluostrova. // Ocgerki po petrologiy, mineralogiy i metallogeniy Kolskogo poluostrova. L.: Nauka. 1968. p. 5-143. (in russian) 2. Belkov I.V., Zagorodny V.G., Predovsky A.A. et al. Stratigraficheskoe raschlenenie i korrelyacia dokembria severo-vostochoi chasty Baltiyskogo shita. L.: Nauka. 1971. p. 141-150. (in russian) 3. Docembriskaya tektonica severo-vostochoi chasty Baltiyskogo shita (Ob'asnitelnaya zapiska k tektonicheskoi karte severo-vostochoi chasty Baltiyskogo shita 1:500000) / ed.: F.P.Mitrofanov. Apatity: KFAN SSSR. 1992. 112 P. (in russian) 4. Zagorodny V.G., Radchenko A.T. Tectonika i glubinnoe stroenie severo-vostochoi chasty Baltiyskogo shita. Apatity: KFA SSSR. 1978. p. 3-12. (in russian) 5. Kozlov N.E., Sorohtin N.O., Glaznev V.N. et al. Geologia Arhea Baltiskogo shita. S.Pb.: Nauka. 2006. 329 p. (in russian) 6. Mitrofanov F.P. Sovremennie problemy i nekotorie resheniya dokembriskoy geologii kratonov. (2001) Litosphera.2001. V 1. P. 5-14. (in russian) 7. Ob'asnitelnaya zapiska k geologicheskoy karte severo-vostochoi chasty Baltiyskogo shita 1:500000 / ed.: F.P.Mitrofanov. Apatity: KFAN SSSR. 1994. 95 P. (in russian) 8. Haritonov L.Y. Structura i stratigraphia karelid vostoka Baltiskogo shita. M.: Nedra. 1966. 354 P. (in russian)

Nitkina, Elena

2013-04-01

128

Machine recognition of hand-drawn circuit diagrams  

Microsoft Academic Search

An application of image processing techniques to recognition of hand-drawn circuit diagrams is presented. The scanned image of a diagram is pre-processed to remove noise and converted to bilevel. Morphological operations are applied to obtain a clean, connected representation using thinned lines. The diagram comprises of nodes, connections and components. Nodes and components are segmented using appropriate thresholds on a

B. Edwards; V. Chandran

2000-01-01

129

Plan of North Approach, Plan of South Approach, Diagram of ...  

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

Plan of North Approach, Plan of South Approach, Diagram of Camber, Detail of Framing of Arch Member of Bottom Chord, Isometric of T Blocks in Bottom Chord - Wood-Covered Bridge, Spanning Main Licking River, Butler, Pendleton County, KY

130

Phase diagram of the Mg–B system at 2 GPa and peculiarities of high-pressure manufacture of MgB2-based blocks with high critical currents  

Microsoft Academic Search

The quenching from high pressures, X-ray analysis, and scanning electron microscopy have been used to experimentally study phase equilibria in the Mg–B binary system at a pressure of 2–4 GPa. The experimental results have been used to define unknown parameters in phenomenological models of the phases competing at high pressures. Thermodynamic calculations have been made and the phase diagram of the

V. Z. Turkevich; T. A. Prikhna; A. V. Kozyrev

2009-01-01

131

A test of the opponent-process theory of motivation using lesions that selectively block morphine reward.  

PubMed

The opponent-process theory of motivation postulates that motivational stimuli activate a rewarding process that is followed by an opposed aversive process in a homeostatic control mechanism. Thus, an acute injection of morphine in nondependent animals should evoke an acute rewarding response, followed by a later aversive response. Indeed, the tegmental pedunculopontine nucleus (TPP) mediates the rewarding effects of opiates in previously morphine-naive animals, but not other unconditioned effects of opiates, or learning ability. The aversive opponent process for acute morphine reward was revealed using a place-conditioning paradigm. The conditioned place aversion induced by 16-h spontaneous morphine withdrawal from an acute morphine injection in nondependent rats was abolished by TPP lesions performed prior to drug experience. However, TPP-lesioned rats did show conditioned aversions for an environment paired with the acute administration of the opioid antagonist naloxone, which blocks endogenous opioids. The results show that blocking the rewarding effects of morphine with TPP lesions also blocked the opponent aversive effects of acute morphine withdrawal in nondependent animals. Thus, this spontaneous withdrawal aversion (the opponent process) is induced by the acute rewarding effects of morphine and not by other unconditioned effects of morphine, the pharmacological effects of morphine or endogenous opioids being displaced from opiate receptors. PMID:17610590

Vargas-Perez, Hector; Ting-A-Kee, Ryan A; Heinmiller, Andrew; Sturgess, Jessica E; van der Kooy, Derek

2007-06-01

132

Process-chain approach to the Bose-Hubbard model: Ground-state properties and phase diagram  

SciTech Connect

We carry out a perturbative analysis, of high order in the tunneling parameter, of the ground state of the homogeneous Bose-Hubbard model in the Mott insulator phase. This is made possible by a diagrammatic process-chain approach, derived from Kato's representation of the many-body perturbation series, which can be implemented numerically in a straightforward manner. We compute ground-state energies, atom-atom correlation functions, density-density correlations, and occupation number fluctuations, for one-, two-, and three-dimensional lattices with arbitrary integer filling. A phenomenological scaling behavior is found which renders the data almost independent of the filling factor. In addition, the process-chain approach is employed for calculating the boundary between the Mott insulator phase and the superfluid phase with high accuracy. We also consider systems with dimensionalities d>3, thus monitoring the approach to the mean-field limit. The versatility of the method suggests further applications to other systems which are less well understood.

Teichmann, Niklas; Hinrichs, Dennis; Holthaus, Martin; Eckardt, Andre [Institut fuer Physik, Carl von Ossietzky Universitaet, D-26111 Oldenburg (Germany); ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, E-08860 Castelldefels (Barcelona) (Spain)

2009-06-01

133

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

134

Separation of Compound and Direct Reaction Processes by the Crystal Blocking Technique  

Microsoft Academic Search

The crystal blocking effect was used to study the time distribution of 5-MeV protons elastically scattered from a germanium crystal. The time delay associated with compound-elastic scattering is estimated and used to separate the direct and compound-nuclear contributions to the elastic cross section.

E. P. Kanter; Y. Hashimoto; I. Leuca; G. M. Temmer; K. R. Alvar; W. M. Gibson

1975-01-01

135

Access to process data with OPC-DA using IEC61499 Service Interface Function Blocks  

Microsoft Academic Search

The need for flexibility in manufacturing systems is continuously growing. This need deals with the establishment of design methodologies for implementing distributed applications. The IEC61499 define a generic architecture for designing distributed applications, based on Functions Block (FB) networks. The interface between the control software and the hardware is achieved by means of the so called Service Interface FB. But

F. Perez; D. Orive; M. Marcos; E. Estevez; G. Moran; I. Calvo

2009-01-01

136

Bite-Block Perturbation in People Who Stutter: Immediate Compensatory and Delayed Adaptive Processes  

ERIC Educational Resources Information Center

|This exploratory study investigated sensory-motor mechanisms in five people who stutter (PWS) and five people who do not (PNS). Lip kinematic and coordination data were recorded as they produced bi-syllabic nonwords at two rates (normal and fast) in three conditions (jaw-free, immediately after insertion of a bite-block, and after a 10-min…

Namasivayam, Aravind Kumar; van Lieshout, Pascal; De Nil, Luc

2008-01-01

137

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

138

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

139

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

140

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

141

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

142

Calculated C–MoSi 2 and B–Mo 5Si 3 pseudo-binary phase diagrams for the use in advanced materials processing  

Microsoft Academic Search

The phase diagrams were calculated for the pseudo-binary systems, C–MoSi2, and B–Mo5Si3, in which the composites have significant potentials to function in high-temperature environments. The calculations have been executed with the aid of the software ChemSage and thermodynamic data derived based on the solution database of Scientific Group Thermodata Europe (SGTE). The constructed phase diagrams are discussed with respect to

Xiaobao Fan; Klaus Hack; Takamasa Ishigaki

2000-01-01

143

Implementation of a knowledge-based methodology in a decision support system for the design of suitable wastewater treatment process flow diagrams.  

PubMed

In light of rapid global change, the demand for wastewater treatment is increasing rapidly and will continue to do so in the near future. Wastewater management is a complex puzzle for which the proper pieces must be combined to achieve the desired solution, requiring the simultaneous consideration of technical, economic, social and environmental issues. In this context, a knowledge-based methodology (KBM) for the conceptual design of wastewater treatment plant (WWTP) process flow diagrams (PFDs) and its application for two scenarios is presented in this paper. The core of the KBM is composed of two knowledge bases (KBs). The first, a specification knowledge base (S-KB), summarizes the main features of the different treatment technologies: pollutants removal efficiency, operational costs and technical reliability. The second, a compatibility knowledge base (C-KB), contains information about the different interactions amongst the treatment technologies and determines their degree of compatibility. The proposed methodology is based on a decision hierarchy that uses the information contained in both KBs to generate all possible WWTP configurations, screening and selecting appropriate configurations based on user-specified requirements and scenario characteristics. The design of the most adequate treatment train for small and medium sized wastewater treatment plants (2000 and 50,000 p.e. respectively) according to different restrictions (space constraints, operation simplicity and cost optimization) was the example in order to show the usefulness of the KBM. PMID:22982697

Garrido-Baserba, Manel; Reif, Rubén; Hernández, Francesc; Poch, Manel

2012-09-13

144

Ground-state phase diagram and magnetization process of the exactly solved mixed spin-(1,1/2) Ising diamond chain  

NASA Astrophysics Data System (ADS)

The ground state and magnetization process of the mixed spin-(1,1/2) Ising diamond chain are exactly solved by employing the generalized decoration-iteration mapping transformation and the transfer-matrix method. The decoration-iteration transformation is first used in order to establish a rigorous mapping equivalence with the corresponding spin-1 Blume-Emery-Griffiths chain in a non-zero magnetic field, which is subsequently exactly treated within the framework of the transfer-matrix technique. It is shown that the ground-state phase diagram includes just four different ground states and the low-temperature magnetization curve may exhibit an intermediate plateau precisely at one half of the saturation magnetization. Our rigorous results disprove recent Monte Carlo simulations of Xin et al. [Z. Xin, S. Chen, C. Zhang, J. Magn. Magn. Mater. 324 (2012) 3704], which imply an existence of the other magnetization plateaus at 0.283 and 0.426 of the saturation magnetization.

Lisnyi, Bohdan; Stre?ka, Jozef

2013-11-01

145

A METALLOPROTEINASE INHIBITOR BLOCKS THE SHEDDING OF SOLUBLE CYTOKINE RECEPTORS AND PROCESSING OF TRANSMEMBRANE CYTOKINE PRECURSORS IN HUMAN MONOCYTIC CELLS  

Microsoft Academic Search

A number of membrane-anchored cytokines and cytokine receptors are susceptible to yield soluble counterparts. Recently, peptide-hydroxamate metalloproteinase inhibitors have been reported to block the proteolytic processing of tumour necrosis factor (TNF)-? 55- and 75-kDa TNF receptors (TNF-R55 and TNF-R75), and interleukin (IL)-6R. In this report the authors studied the effect of an hydroxamate metalloproteinase inhibitor on the secretion of cytokines

Sylvie Gallea-Robache; Valérie Morand; Sylvaine Millet; Jean-Michel Bruneau; Neerja Bhatnagar; Salem Chouaib; Sergio Roman-Roman

1997-01-01

146

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

147

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

148

The digital all-pass filter: a versatile signal processing building block  

Microsoft Academic Search

The digital all-pass filter is a computationally efficient signal pro- cessing building block which is quite useful in many signal pm- cessing applications. In this tutorial paper we review the properties of digital all-pass filters, and provide a broad overview of the diver- sity of applications in digital filtering. Starting with the definition and basic properties of a scalar all-pass

PHILLIP A. REGALIA; P. P. VAIDYANATHAN

1988-01-01

149

Optimization of foaming process using triblock polyimides with thermally labile blocks  

Microsoft Academic Search

Triblock polyamic acid was synthesized from the reaction of amine-terminated polystyrene with 4,4?-oxydianiline and pyromellitic dianhydride in N-methyl-2-pyrrolidone. IR and TGA were used to determine optimum curing conditions, in which imidization was completed and the thermally labile polystyrene block was intact. From the thermomechanical analysis (TMA), it was identified that the resulting triblock polyimide film showed contraction at several points

D. W Kim; S. S Hwang; S. M Hong; H. O Yoo; S. P Hong

2001-01-01

150

Dinosaur Extinction: Causal Loop Diagram of Earth Feedback System  

NSDL National Science Digital Library

This site features a causal loop diagram from system dynamics methodology showing the solar-earth-space energy flow system (the dominant flow system driving earth's surficial systems, including the biosphere) and interactive natural earthly processes that influence it. Also included is a discussion of the diagram, and a link to a page that explains how to read causal loop diagrams.

Mclean, Dewey M.; Tech, Virginia

151

Self-assembly patterning using block copolymer for advanced CMOS technology: optimisation of plasma etching process  

NASA Astrophysics Data System (ADS)

The best strategy to transfer nanopatterns formed from the self assembly of PS/PMMA bloc copolymers into a silicon substrate is investigated. We show that a hard mask patterning strategy combined with a plasma cure treatment of the PS mask are necessary to reproduce the PS mask pattern into the silicon with a good critical dimension control. In addition, typical silicon etching plasma condition must be revisited to allow the etching of sub-20 nm holes. These results indicate that block copolymer can be readily used as etching masks for advanced CMOS technology.

Chevolleau, T.; Cunge, G.; Delalande, M.; Chevalier, X.; Tiron, R.; David, S.; Darnon, M.; Navarro, C.

2012-03-01

152

Reversible Morphology Control in Block Copolymer Films via Solvent Vapor Processing: An In Situ GISAXS study  

PubMed Central

The real time changes occurring within films of cylinder-forming poly(?-methylstyrene-block-4-hydroxystyrene) (P?MS-b-PHOST) were monitored as they were swollen in tetrahydrofuran (THF) and acetone solvent vapors. In situ information was obtained by combining grazing incidence small angle X-ray scattering (GISAXS) with film thickness monitoring of the solvent vapor swollen films. We show that for self assembly to occur, the polymer thin film must surpass a swollen thickness ratio of 212% of its original thickness when swollen in THF vapors and a ratio of 268% for acetone vapor annealing. As the polymer becomes plasticized by solvent vapor uptake, the polymer chains must become sufficiently mobile to self assemble, or reorganize, at room temperature. Using vapors of a solvent selective to one of the blocks, in our case PHOST-selective acetone, an order-order transition occured driven by the shift in volume fraction. The BCC spherical phase assumed in the highly swollen state can be quenched by rapid drying. Upon treatment with vapor of a non-selective solvent, THF, the film maintained the cylindrical morphology suggested by its dry-state volume fraction. In situ studies indicate that self-assembly occurs spontaneously upon attaining the threshold swelling ratios.

Paik, Marvin Y.; Bosworth, Joan K.; Smilges, Detlef-M.; Schwartz, Evan L.; Andre, Xavier; Ober, Christopher K.

2010-01-01

153

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

154

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

155

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

156

Sea-floor character and sedimentary processes of Block Island Sound, offshore Rhode Island  

USGS Publications Warehouse

Gridded multibeam bathymetry covers approximately 634 square kilometers of sea floor in Block Island Sound. Although originally collected for charting purposes during National Oceanic and Atmospheric Administration hydrographic surveys H12009, H12010, H12011, H12015, H12033, H12137, and H12139, these combined acoustic data and the sea-floor sediment sampling and photography stations subsequently occupied to verify them during U.S. Geological Survey cruise 2011-006-FA (1) show the composition and terrain of the seabed, (2) provide information on sediment transport and benthic habitat, and (3) are part of an expanding series of studies that provide a fundamental framework for research and management activities (for example, wind farms and fisheries) along the Rhode Island inner continental shelf.

Poppe, L. J.; Danforth, W. W.; McMullen, K. Y.; Blankenship, M. A.; Glomb, K. A.; Wright, D. B.; Smith, S. M.

2012-01-01

157

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

158

Recording Block Transfer Agreements with PCTIA-Accredited Institutions: Policy and Process  

ERIC Educational Resources Information Center

The purpose of this policy and process document is to provide advice to public and private institutions intending to enter into articulation agreements regarding: (1) Appropriate steps to be taken by each partner to the agreement; (2) Recommended processes for recording and monitoring the agreement; and (3) Circumstances under which agreements…

British Columbia Council on Admissions and Transfer, 2008

2008-01-01

159

Inhibition of glycoprotein processing blocks assembly of spicules during development of the sea urchin embryo  

Microsoft Academic Search

Previous studies have implicated an 130-kD glycoprotein containing complex, N-linked oligosac- charide chain(s) in the process of spicule formation in sea urchin embryos. To ascertain whether the process- ing of high mannose oligosaccharides to complex oligosaccharides is necessary for spiculogenesis, intact embryos and cultures of spicule-forming primary mesenchyme cells were treated with glycoprotein pro- cessing inhibitors. In both the embryonic

Bruce Kabakoff; William J. Lennarz

1990-01-01

160

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

161

Data reordering converter: an interface block in a linear chain of processing arrays  

Microsoft Academic Search

This paper addresses the problem of hardware synthesis of data reordering converter intended to reorganize the layout of transferred data between various processing stages (components) with different I\\/O format requirements. The proposed design is based on two objectives: (a) fixed bandwidth to main memory, and (b) scalability to higher performance without increasing main-memory bandwidth. The data reordering converter involves two

M. K. Stojcev; G. Lj. Djordjevic; E. I. Milovanovic; I. Z. Milovanovic

2000-01-01

162

Unexpected implications of Anisian limestone blocks in the Çetmi mélange (NW Turkey) : younger ocean or mixing processes  

NASA Astrophysics Data System (ADS)

The 2000 km long Izmir-Ankara-Erzincan suture, separating the Sakarya zone from the Anatolide-tauride block, extends from north of Izmir eastwards to the border with Georgia from where it may continue as the Sevan-Akera suture. One of its main feature is the widespread occurrence of Cretaceous subduction-accretion complexes, mainly made of basalt, radiolarian chert, pelagic limestone, pelagic shale and serpentinite. The Çetmi accretionary mélange of NW Turkey is now considered as a part of the Izmir-Ankara-Erzincan suture belt. Hallstatoid red pelagic limestones from the mélange have yielded Anisian conodonts making them its oldest lithology. This block is rather seen as a consequence of the mixing of two different units (the Çetmi mélange and the Karakaya Complex), than a witness of the first deposits of the Izmir-Ankara-Erzincan Ocean itself. Therefore this discovery does not imply an older age for the opening of the latter. The possible occurrence of tectonic mixing processes between successive accretionary complexes is finally shown through the whole evolution of the Izmir-Ankara-Erzincan Ocean, from its opening to its closure. This observation may be extended to all mélanges which record different oceanic domains.

Beccaletto, L.; Stampfli, G. M.

2003-04-01

163

Dynamic probabilistic risk assessment using event sequence diagrams  

NASA Astrophysics Data System (ADS)

Dynamic reliability/PRA is the probabilistic study of man-machine-software systems affected by an underlying physical process. Dynamic reliability/Probabilistic Risk Assessment methodologies have become fairly established in academia and their theoretical superiority over the classical Event Tree/Fault Tree approach to risk assessment has been demonstrated. Despite this, dynamic PRA methods have not enjoyed the support of the industry. One of the major reasons for this lack of support is the absence of a framework for qualitatively representing dynamic accident scenarios. This dissertation provides a framework for qualitatively representing dynamic accident scenarios using Event Sequence Diagrams (ESD). The concept of Event Sequence Diagrams is extended to capture dynamic scenarios. The mathematical equations governing the various building blocks of the Event Sequence Diagram framework are provided. From these equations it can be seen that ESDs can be studied using the theory of semi-Markov processes. All previous attempts to analytically solve dynamic reliability problems were involved with solving the Chapman-Kolmogorov system of hyperbolic partial differential equations and this could be done for only very small systems. The equations governing the ESD framework are such that they reduce the solution of dynamic reliability problems to the evaluation of a series of multidimensional integrals, thus facilitating analytical solutions by reducing the dimensionality of the problem. One of the drawbacks of the ESD approach, compared to full fledged dynamic methodologies, would arise from the analyst dependent nature of the approach. Indeed, since the scenarios are constructed by an analyst, it is possible that some scenarios would be neglected due to the use of simplifying assumptions. An approach to identify missing scenarios by combining ESDs with probabilistic dynamics is also given in this dissertation.

Swaminathan, S.

164

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

165

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

166

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

167

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

168

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

169

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

170

Block jam  

Microsoft Academic Search

Block Jam is a musical interface controlled by the arrangement of 24 tangible blocks. By positioning the blocks (Figure 1), musical phrases and sequences are created, allowing multiple users to play and collaborate.

Henry Newton-Dunn; Hiroaki Nakano; James Gibson

2002-01-01

171

Acquired Atrioventricular Block  

Microsoft Academic Search

There are many causes of atrioventricular (AV) block but progressive idiopathic fibrosis of the conduction system related\\u000a to an aging process of the cardiac skeleton is the most common cause of chronic acquired AV block. Barring congenital AV block,\\u000a Lyme disease is the most common cause of reversible third-degree AV block in young individuals and it is usually AV nodal.

S. Serge Barold; Bengt Herweg

172

Wear Protection of AJ62 Mg Engine Blocks using Plasma Electrolytic Oxidation Process  

NASA Astrophysics Data System (ADS)

In order to reduce the fuel consumption and pollution, automotive companies are developing magnesium-intensive components. However, due to the low wear resistance of the magnesium (Mg) alloys, Mg cylinder bores are vulnerable to the sliding wear attack. In this thesis, two approaches were used to protect the cylinder bores, made of a new developed Mg engine alloy AJ62 (MgA16Mn0.34Sr2). The first one was to use a Plasma Electrolytic Oxidation (PEO) process to produce oxide coatings on the Mg bores. The wear properties of the PEO coatings were evaluated by sliding wear tests under the boundary lubrication condition at the room and elevated temperatures. It was found that due to the substrate softening and the vaporization loss of the lubricant, the tribological properties of the PEO coatings were deteriorated at the elevated temperature. In order to optimize the PEO process, a statistical method (Response surface method) was used to analyze the effects of the 4 main PEO process parameters with 2 levels for each and their interactions on the tribological properties of the PEO coatings at the room and elevated temperatures, individually. A cylinder liner made of an economical metal-matrix composite (MMC) was another approach to improve the wear resistance of the Mg cylinder bore. In this thesis, an A1383/SiO2 MMC was designed to replace the expensive Alusil alloy used in the BMW Mg/Al composite engine to build the cylinder liner. To further increase the wear resistance of the MMC, PEO process was also used to form an oxide coating on the MMC. The effects of the SiO 2 content and coating thickness on the tribological properties of the MMC were studied. To evaluate the wear properties of the optimal PEO coated Mg coupons and the MMC with the oxide coatings, Alusil and cast iron, currently used on the cylinder bores of the commercial aluminum engines, were used as reference materials. The optimal PEO coated Mg coupons and the oxidized MMC showed their advantages over the two reference materials under the high contact stress, especially at the elevated temperature.

Zhang, Peng

173

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

174

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

175

A VLSI Architecture with Multiple Fast Store-Based Block Parallel Processing for Output Probability and Likelihood Score Computations in HMM-Based Isolated Word Recognition  

NASA Astrophysics Data System (ADS)

This paper presents a memory-efficient VLSI architecture for output probability computations (OPCs) of continuous hidden Markov models (HMMs) and likelihood score computations (LSCs). These computations are the most time consuming part of HMM-based isolated word recognition systems. We demonstrate multiple fast store-based block parallel processing (MultipleFastStoreBPP) for OPCs and LSCs and present a VLSI architecture that supports it. Compared with conventional fast store-based block parallel processing (FastStoreBPP) and stream-based block parallel processing (StreamBPP) architectures, the proposed architecture requires fewer registers and less processing time. The processing elements (PEs) used in the FastStoreBPP and StreamBPP architectures are identical to those used in the MultipleFastStoreBPP architecture. From a VLSI architectural viewpoint, a comparison shows that the proposed architecture is an improvement over the others, through efficient use of PEs and registers for storing input feature vectors.

Nakamura, Kazuhiro; Shimazaki, Ryo; Yamamoto, Masatoshi; Takagi, Kazuyoshi; Takagi, Naofumi

176

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

177

Extending UML 2 Activity Diagrams with Business Intelligence Objects  

Microsoft Academic Search

Data Warehouse (DWH) information is accessed by business proc- esses. Today, no conceptual models exist that make the relationship between the DWH and the business processes transparent. In this paper, we extend a business process modeling diagram, namely the UML 2 activity diagram with a UML profile, which allows to make this relationship explicit. The model is tested with example

Veronika Stefanov; Beate List; Birgit Korherr

2005-01-01

178

A software environment for digital signal-processing simulations  

Microsoft Academic Search

A signal-processing software system is described which allows the simulation of systems described by block diagrams or signal-flow graphs. A high-level data-flow language describes the interconnection of the components. All configurations of interconnections are allowed, including those containing feedback. Component systems (blocks) are allowed to be multi-input, multi-output, and to be programmed in any language. Blocks are implemented as separate

Don H. Johnson; Robert E. Vaughan

1987-01-01

179

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

180

The PRISM 2.2 real time signal processing system  

Microsoft Academic Search

A description is given of the PRISM 2.2 system, a general purpose real-time signal processing system designed for very easy development and modification of signal processing applications. Both the hardware and software are flexible and easily modified to support changing project requirements. Use of additional hardware requires only an update of the configuration file. Signal processing block diagrams are easily

K. Stanwood; A. Bourdon

1992-01-01

181

An fMRI-study of locally oriented perception in autism: altered early visual processing of the block design test.  

PubMed

Autism has been associated with enhanced local processing on visual tasks. Originally, this was based on findings that individuals with autism exhibited peak performance on the block design test (BDT) from the Wechsler Intelligence Scales. In autism, the neurofunctional correlates of local bias on this test have not yet been established, although there is evidence of alterations in the early visual cortex. Functional MRI was used to analyze hemodynamic responses in the striate and extrastriate visual cortex during BDT performance and a color counting control task in subjects with autism compared to healthy controls. In autism, BDT processing was accompanied by low blood oxygenation level-dependent signal changes in the right ventral quadrant of V2. Findings indicate that, in autism, locally oriented processing of the BDT is associated with altered responses of angle and grating-selective neurons, that contribute to shape representation, figure-ground, and gestalt organization. The findings favor a low-level explanation of BDT performance in autism. PMID:18301959

Bölte, S; Hubl, D; Dierks, T; Holtmann, M; Poustka, F

2008-02-26

182

Identification of inhibitors that block vaccinia virus infection by targeting the DNA synthesis processivity factor D4.  

PubMed

Smallpox was globally eradicated 30 years ago by vaccination. The recent threat of bioterrorism demands the development of improved vaccines and novel therapeutics to effectively preclude a reemergence of smallpox. One new therapeutic target is the vaccinia poxvirus processivity complex, comprising D4 and A20 proteins that enable the viral E9 DNA polymerase to synthesize extended strands. Five compounds identified from an AlphaScreen assay designed to disrupt A20:D4 binding were shown to be effective in: (i) blocking vaccinia processive DNA synthesis in vitro, (ii) preventing cellular infection with minimal cytotoxicity, and (iii) binding to D4, as evidenced by ThermoFluor. The EC(50) values for inhibition of viral infectivity ranged from 9.6 to 23 ?M with corresponding selectivity indices (cytotoxicity CC(50)/viral infectivity EC(50)) of 3.9 to 17.8. The five compounds are thus potential therapeutics capable of halting smallpox DNA synthesis and infectivity through disruptive action against a component of the vaccinia processivity complex. PMID:21438571

Nuth, Manunya; Huang, Lijuan; Saw, Yih Ling; Schormann, Norbert; Chattopadhyay, Debasish; Ricciardi, Robert P

2011-04-19

183

Quickest Paths, Straight Skeletons, and the City Voronoi Diagram  

Microsoft Academic Search

The city Voronoi diagram is induced by quickest paths in the L 1plane, made faster by an isothetic transportation network. We investigate the rich geometric and algorithmic properties of city Voronoi diagrams, and report on their use in processing quickest-path queries. In doing so, we revisit the fact that not every Voronoi-type diagram has interpretations in both the distance model

Oswin Aichholzer; Franz Aurenhammer; Belén Palop

2004-01-01

184

Quickest paths, straight skeletons, and the city Voronoi diagram  

Microsoft Academic Search

The city Voronoi diagram is induced by quickest paths, in the L 1 plane speeded up by an isothetic transportation network. We investigate the rich geometric and algorithmic properties of city Voronoi diagrams, and report on their use in processing quickest-path queries.In doing so, we revisit the fact that not every Voronoi-type diagram has interpretations in both the distance model

Oswin Aichholzer; Franz Aurenhammer; Belén Palop

2002-01-01

185

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

186

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

187

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

188

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

189

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

190

mre11S--a yeast mutation that blocks double-strand-break processing and permits nonhomologous synapsis in meiosis  

PubMed Central

During meiotic prophase the repair of self-inflicted DNA double-strand break (DSB) damage leads to meiotic recombination in yeast. We employed a genetic screen to specifically characterize cellular functions that become essential after this DSB formation. As a result a new allele of MRE11, termed mre11S (for Separation of functions) was isolated that allows initiation but not processing and repair of meiotic DSBs similar to the well-characterized rad50S allele. In contrast, the mre11-1 allele blocks initiation of meiotic DSBs as reported previously by others. The mre11S allele, which is mutated in the 5? part of the gene, can partially complement mre11 alleles disrupted close to the 3? end that cannot initiate DSBs when homozygous. This suggests homodimerization of the Mre11 protein and the presence of separate domains for DSB initiation and 5? resection. The fact that two genes, RAD50 and MRE11, required for DSB processing are also essential for DSB initiation dictates a model in which a bifunctional initiation/repair complex is required to initiate meiotic recombination. A subset of mre11S nuclei was shown to perform extensive but partially nonhomologous synapsis. We propose that the unprocessed DSBs present in mre11S allow for synapsis, but that homologous synapsis is only ensured at a later stage of recombination.

Nairz, Knud; Klein, Franz

1997-01-01

191

Block-block entanglement and quantum phase transitions in the one-dimensional extended Hubbard model  

Microsoft Academic Search

In this paper, we study block-block entanglement in the ground state of a one-dimensional extended Hubbard model. Our results show that the phase diagram derived from the block-block entanglement manifests a richer structure than that of the local (single-site) entanglement because it comprises nonlocal correlation. Besides phases characterized by the charge-density wave, the spin-density wave, and phase separation, which can

Shu-Sa Deng; Shi-Jian Gu; Hai-Qing Lin

2006-01-01

192

Provenance of the Qingshuijian Formation (Late Carboniferous), NE China: Implications for tectonic processes in the northern margin of the North China block  

NASA Astrophysics Data System (ADS)

The Upper Carboniferous Qingshuijian Formation in the Western Hill, NE China, was deposited disconformably on a Lower Paleozoic platformal carbonate sequence. The provenance and the tectonic setting of the source area of the Qingshuijian Formation were studied using sandstone petrography and mudstone geochemistry. Sandstones consist mainly of quartz and (meta) sedimentary lithic fragments and are classified as litharenite. Feldspar is lacking in sandstones, and negative Eu anomalies similar to those displayed by Post-Archean Australian Shale (PAAS), along with depleted Ca, Na, Cs, and Rb, and low K2O/Al2O3 ratios in mudstones all suggest that feldspar was scarce in the source terrane. Abundant sedimentary lithic fragments in sandstones, low values of the index of compositional variability (< 1), values of chemical index of alteration higher than PAAS, depleted transition metals, higher total REE abundances and more fractionated REE patterns than PAAS all indicate that the source area was dominated by sedimentary rocks. Geochemical and sandstone tectonic discrimination diagrams suggest that the provenance of the Qingshuijian Formation was a recycled orogen composed of quartzose to lithic sedimentary rocks that were deposited originally in a passive margin setting. The Yinshan Uplift, located in the northern margin of the North China block, that formed as a result of the collision between the North China block and the Mongolian continent, is interpreted to be the provenance for the Qingshuijian Formation. During collision the intervening sea floor was subducted northward, and an accretionary prism was elevated, forming a barrier to arc-derived sediments.

Joo, Young Ji; Lee, Yong Il; Bai, Zhiquiang

2005-06-01

193

Great Plains Gasification Project process stream design data. Final report  

SciTech Connect

The Great Plains Coal Gasification Plant (GPGP) in the first commercial coal-to-SNG synthetic fuel plant constructed and operated in the United States. This process stream design data report provides non-proprietary information to the public on the major GPGP process streams. The report includes a simplified plant process block flow diagram, process input/output diagrams and stream design data sheets for 161 major GPGP process and effluent streams. This stream design data provides an important base for evaluation of plant and process performance and for verification of the DOE ASPEN computer simulation models of the GPGP processes. 8 refs.

Honea, F.I.

1985-09-01

194

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

195

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

196

Valves - current operating experience of slurry valves (block and letdown) in coal liquefaction processes. Third quarter report  

SciTech Connect

This paper summarizes the recent letdown and block valve experience in the liquefaction pilot plants. Also included is a brief description of the research and development activities on valves which are conducted in supporting laboratories. The purpose of the summary is to concentrate on critical component problems common to all liquefaction plants, to avoid duplication of efforts, and to help provide timely solutions to the valve problems. The main source of information used in this paper is the Minutes of the Critical Component and Materials Meeting which is sponsored by the Office of Coal Processing, Fossil Energy, Department of Energy. Other sources of information such as the technical progress reports are also included based on availability and relevance to topics covered in this paper. It is intended that this report will be followed by updates as pertinent information concerning valves becomes available. In the subsequent sections of this paper a brief outline of past valve studies is given as background material followed by a summary of the most recent valve operating experience at the liquefaction plants.

NONE

1996-07-01

197

Lattice Boltzmann study of hydrodynamic effects in lamellar ordering process of two-dimensional quenched block copolymers.  

PubMed

By incorporating self-consistent field theory with lattice Boltzmann method, a model for polymer melts is proposed. Compared with models based on Ginzburg-Landau free energy, our model does not employ phenomenological free energies to describe systems and can consider the chain topological details of polymers. We use this model to study the effects of hydrodynamic interactions on the dynamics of microphase separation for block copolymers. In the early stage of phase separation, an exponential growth predicted by Cahn-Hilliard treatment is found. Simulation results also show that the effect of hydrodynamic interactions can be neglected in the early stage. For the late stage of phase separation, it is easy to see the effects of hydrodynamic interactions on the ordering process of lamellae phase. From the analysis of structure factor curves, we find that the growth of domains is faster if hydrodynamic interactions are introduced. Furthermore, the scaling of the pattern dynamics is investigated for the late stage at zero thermal noise. By studying the behavior of scaling exponents of the structure factor and the nematic order-parameter correlation function C(nn), we can see that the effects of hydrodynamic interactions lead to bigger growth exponent for both functions. PMID:19045162

Song, Kai-Xu; Jia, Yu-Xi; Sun, Zhao-Yan; An, Li-Jia

2008-10-14

198

Data flow diagrams: reverse engineering production and animation  

Microsoft Academic Search

The authors propose the use of interactive animation techniques as a support to reverse engineering processes oriented to the synthesis of semantic abstractions. Starting from data flow diagrams, a formal model, called dynamic data flow diagrams (DDFDs), has been defined, which can be used for the production of executable models of a software system. A strategy for the DDFD interactive

G. Canfora; L. Sansone; G. Visaggio

1992-01-01

199

Multi-scale image warping using weighted Voronoi diagram  

Microsoft Academic Search

A new multi-scale image warping method based on the weighted Voronoi diagram is proposed. Weights are assigned to the control points according to their influence scales. At each scale level, a triangulation based on the weighted Voronoi diagram is constructed. Then the interpolation of displacements is performed on this triangulation. In this process, only the control points with large weights

Hai Tao; Thomas S. Huang

1996-01-01

200

Population Blocks.  

ERIC Educational Resources Information Center

|Describes an educational game called "Population Blocks" that is designed to illustrate the concept of exponential growth of the human population and some potential effects of overpopulation. The game material consists of wooden blocks; 18 blocks are painted green (representing land), 7 are painted blue (representing water); and the remaining…

Smith, Martin H.

1992-01-01

201

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

202

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

203

Designing Class Methods from Dataflow Diagrams  

NASA Astrophysics Data System (ADS)

A method for designing the class methods of an information system is described. The method is part of FOOM - Functional and Object-Oriented Methodology. In the analysis phase of FOOM, two models defining the users' requirements are created: a conceptual data model - an initial class diagram; and a functional model - hierarchical OO-DFDs (object-oriented dataflow diagrams). Based on these models, a well-defined process of methods design is applied. First, the OO-DFDs are converted into transactions, i.e., system processes that supports user task. The components and the process logic of each transaction are described in detail, using pseudocode. Then, each transaction is decomposed, according to well-defined rules, into class methods of various types: basic methods, application-specific methods and main transaction (control) methods. Each method is attached to a proper class; messages between methods express the process logic of each transaction. The methods are defined using pseudocode or message charts.

Shoval, Peretz; Kabeli-Shani, Judith

204

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

205

Signal processing software tools  

Microsoft Academic Search

A signal processing software system is described which allows the simulation of systems described by block diagrams or signal-flow graphs. Component systems are allowed to be multi-input, multi-output, and to be programmed in any language. A high level dataflow language describes the interconnection of the components. Special display software was written to allow any signal in the system to be

D. Johnson

1984-01-01

206

Heterochromatin Blocks Constituting the Entire Short Arms of Acrocentric Chromosomes of Azara's Owl Monkey: Formation Processes Inferred From Chromosomal Locations  

PubMed Central

Centromeres and telomeres of higher eukaryotes generally contain repetitive sequences, which often form pericentric or subtelomeric heterochromatin blocks. C-banding analysis of chromosomes of Azara's owl monkey, a primate species, showed that the short arms of acrocentric chromosomes consist mostly or solely of constitutive heterochromatin. The purpose of the present study was to determine which category, pericentric, or subtelomeric is most appropriate for this heterochromatin, and to infer its formation processes. We cloned and sequenced its DNA component, finding it to be a tandem repeat sequence comprising 187-bp repeat units, which we named OwlRep. Subsequent hybridization analyses revealed that OwlRep resides in the pericentric regions of a small number of metacentric chromosomes, in addition to the short arms of acrocentric chromosomes. Further, in the pericentric regions of the acrocentric chromosomes, OwlRep was observed on the short-arm side only. This distribution pattern of OwlRep among chromosomes can be simply and sufficiently explained by assuming (i) OwlRep was transferred from chromosome to chromosome by the interaction of pericentric heterochromatin, and (ii) it was amplified there as subtelomeric heterochromatin. OwlRep carries several direct and inverted repeats within its repeat units. This complex structure may lead to a higher frequency of chromosome scission and may thus be a factor in the unique distribution pattern among chromosomes. Neither OwlRep nor similar sequences were found in the genomes of the other New World monkey species we examined, suggesting that OwlRep underwent rapid amplification after the divergence of the owl monkey lineage from lineages of the other species.

Prakhongcheep, Ornjira; Chaiprasertsri, Nampech; Terada, Shoko; Hirai, Yuriko; Srikulnath, Kornsorn; Hirai, Hirohisa; Koga, Akihiko

2013-01-01

207

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

208

Poly (?-caprolactam)-poly (butadiene- co-acrylonitrile) block copolymers II. Processability and properties of pultruded glass-fiber-reinforced composites  

Microsoft Academic Search

Uni-directional glass-fiber-reinforced Nylon 6 and poly(?-caprolactam)-poly(butadiene-co-acrylonitrile) block copolymers (NY6\\/ ATBN) have been prepared by a novel thermoplastic pultrusion process. The effects of processing parameters, ATBN (amine-terminated butadiene-acrylonitrile copolymer) content and glass fiber content on the mechanical and thermal properties of pultruded composites were studied. Results show that NY6\\/ATBN (less than 15 wt.% ATBN) composites possess good fiber wet-out and very

Chen-Chi M Ma; Meng-Song Yn

1995-01-01

209

Racing Blocks  

NSDL National Science Digital Library

This applet displays the motion of two blocks. One of them is moving on a level surface and the other one along a curved surface, the curve of which can be changed. The initial velocity of the blocks, equal for the two blocks, can also be changed. This is part of a large collection of physics and math applets by the author, B. Surendranath Reddy.

Reddy, B. S.

2008-08-05

210

Drupal Blocks  

Microsoft Academic Search

\\u000a In this chapter I focus on using blocks to assign content and what are called “widgets” (which include the user login form,\\u000a latest blog posts, a list of who is currently logged into your site, the current weather conditions, and the like) to specific\\u000a positions on a page. I will cover standard blocks that ship with Drupal 7, blocks that

Todd Tomlinson

211

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

212

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

213

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

214

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 ...

215

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

216

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

217

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

218

Great Plains Gasification Project process stream design data. [Lurgi Process  

SciTech Connect

The Great Plains Coal Gasification Plant (GPGP) is the first commercial coal-to-synthetic natural gas plant constructed and operated in the United States. This process stream design data report provides non-proprietary information to the public on the major GPGP process streams. The report includes a simplified plant process block flow diagram, process input/output diagrams, and stream design data sheets for 161 major GPGP process and effluent streams. This stream design data provides an important base for evaluation of plant and process performance and for verification of the Department of Energy's ASPEN (Advanced System for Process Engineering) computer simulation models of the GPGP processes. 8 refs., 22 figs., 2 tabs.

Honea, F.I.

1985-09-01

219

Application of ISO22000, Failure Mode, and Effect Analysis (FMEA) Cause and Effect Diagrams and Pareto in Conjunction with HACCP and Risk Assessment for Processing of Pastry Products  

Microsoft Academic Search

The Failure Mode and Effect Analysis (FMEA) model has been applied for the risk assessment of pastry processing. A tentative approach of FMEA application to the pastry industry was attempted in conjunction with ISO22000. Preliminary Hazard Analysis was used to analyze and predict the occurring failure modes in a food chain system (pastry processing plant), based on the functions, characteristics,

Theodoros H. Varzakas

2011-01-01

220

Application of ISO22000, Failure Mode and Effect Analysis (FMEA) Cause and Effect Diagrams and Pareto in conjunction with HACCP and risk assessment for processing of pastry products  

Microsoft Academic Search

Failure Mode and Effect Analysis (FMEA) model has been applied for the risk assessment of pastry processing. A tentative approach of FMEA application to the pastry industry was attempted in conjunction with ISO22000.Preliminary Hazard Analysis was used to analyse and predict the occurring failure modes in a food chain system (pastry processing plant), based on the functions, characteristics and\\/or interactions

Theodoros H. Varzakas

2011-01-01

221

Onland signatures of the Palawan microcontinental block and Philippine mobile belt collision and crustal growth process: A review  

Microsoft Academic Search

The collision of the Palawan microcontinental block with the Philippine mobile belt had significantly influenced the geological evolution of the Philippines. Multiple collisions involving several fragments, through space and time, resulted into the collage of terranes of varying origin exposed in this part of central Philippines. Cusping of the overriding plate, volcanic arc gap, ophiolite emplacement, incipient back-arc rifting, island

Graciano P. Yumul; Carla B. Dimalanta; Edanjarlo J. Marquez; Karlo L. Queaño

2009-01-01

222

Do students use and understand free-body diagrams?  

NSDL National Science Digital Library

Physics education literature recommends using multiple representations to help students understand concepts and solve problems. However, there is little research concerning why students use the representations and whether those who use them are more successful. This study addresses these questions using free-body diagrams (diagrammatic representations used in problems involving forces) as a type of representation. We conducted a two-year quantitative and qualitative study of studentsâ use of free-body diagrams while solving physics problems. We found that when students are in a course that consistently emphasizes the use of free-body diagrams, the majority of them do use diagrams on their own to help solve exam problems even when they receive no credit for drawing the diagrams. We also found that students who draw diagrams correctly are significantly more successful in obtaining the right answer for the problem. Lastly, we interviewed students to uncover their reasons for using free-body diagrams. We found that high achieving students used the diagrams to help solve the problems and as a tool to evaluate their work while low achieving students only used representations as aids in the problem-solving process.

Rosengrant, David; Van Heuvelen, Alan; Etkina, Eugenia

2010-06-29

223

Do students use and understand free-body diagrams?  

NASA Astrophysics Data System (ADS)

Physics education literature recommends using multiple representations to help students understand concepts and solve problems. However, there is little research concerning why students use the representations and whether those who use them are more successful. This study addresses these questions using free-body diagrams (diagrammatic representations used in problems involving forces) as a type of representation. We conducted a two-year quantitative and qualitative study of students’ use of free-body diagrams while solving physics problems. We found that when students are in a course that consistently emphasizes the use of free-body diagrams, the majority of them do use diagrams on their own to help solve exam problems even when they receive no credit for drawing the diagrams. We also found that students who draw diagrams correctly are significantly more successful in obtaining the right answer for the problem. Lastly, we interviewed students to uncover their reasons for using free-body diagrams. We found that high achieving students used the diagrams to help solve the problems and as a tool to evaluate their work while low achieving students only used representations as aids in the problem-solving process.

Rosengrant, David; van Heuvelen, Alan; Etkina, Eugenia

2009-06-01

224

Ionic Blocks  

ERIC Educational Resources Information Center

|"Ionic Blocks" is a teaching tool designed to help middle school students visualize the concepts of ions, ionic compounds, and stoichiometry. It can also assist high school students in reviewing their subject mastery. Three dimensional blocks are used to represent cations and anions, with color indicating charge (positive or negative) and size…

Sevcik, Richard S.; Gamble, Rex; Martinez, Elizabet; Schultz, Linda D.; Alexander, Susan V.

2008-01-01

225

Automated Methodologies for the Design of Flow Diagrams for Development and Maintenance Activities  

NASA Astrophysics Data System (ADS)

The Software Requirements Specification (SRS) of the organization is a text document prepared by strategic management incorporating the requirements of the organization. These requirements of ongoing business/ project development process involve the software tools, the hardware devices, the manual procedures, the application programs and the communication commands. These components are appropriately ordered for achieving the mission of the concerned process both in the project development and the ongoing business processes, in different flow diagrams viz. activity chart, workflow diagram, activity diagram, component diagram and deployment diagram. This paper proposes two generic, automatic methodologies for the design of various flow diagrams of (i) project development activities, (ii) ongoing business process. The methodologies also resolve the ensuing deadlocks in the flow diagrams and determine the critical paths for the activity chart. Though both methodologies are independent, each complements other in authenticating its correctness and completeness.

Shivanand M., Handigund; Shweta, Bhat

226

Stage line diagram: an age-conditional reference diagram for tracking development.  

PubMed

This paper presents a method for calculating stage line diagrams, a novel type of reference diagram useful for tracking developmental processes over time. Potential fields of applications include: dentistry (tooth eruption), oncology (tumor grading, cancer staging), virology (HIV infection and disease staging), psychology (stages of cognitive development), human development (pubertal stages) and chronic diseases (stages of dementia). Transition probabilities between successive stages are modeled as smoothly varying functions of age. Age-conditional references are calculated from the modeled probabilities by the mid-P value. It is possible to eliminate the influence of age by calculating standard deviation scores (SDS). The method is applied to the empirical data to produce reference charts on secondary sexual maturation. The mean of the empirical SDS in the reference population is close to zero, whereas the variance depends on age. The stage line diagram provides quick insight into both status (in SDS) and tempo (in SDS/year) of development of an individual child. Other measures (e.g. height SDS, body mass index SDS) from the same child can be added to the chart. Diagrams for sexual maturation are available as a web application at http://vps.stefvanbuuren.nl/puberty. The stage line diagram expresses status and tempo of discrete changes on a continuous scale. Wider application of these measures scores opens up new analytic possibilities. PMID:19260011

van Buuren, Stef; Ooms, Jeroen C L

2009-05-15

227

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

228

Thinking Blocks  

NSDL National Science Digital Library

Thinking Blocks is an interactive Flash tool for modeling and solving math problems visually. Students represent quantities and relationships by placing blocks and braces on a work space and using the tools to resize and label them accordingly. Users can change the color of blocks, move them, copy them, divide them into equal parts, and separate them. A pencil tool and keyboard are also available. The site includes video tutorials demonstrating how to use the tool and how to model a wide variety of problem types. It also contains a bank of hundreds of word problems.

2011-01-01

229

Phase diagram determinations in Y(x) Nd(1-x) Ba(2) Cu(3) O(y) systems via novel containerless processing techniques  

Microsoft Academic Search

Containerless melt processing experiments have been performed on the copper oxide superconductors YBasb2Cusb3Osb{7-delta}, NdBasb2Cusb3Osb{x}, and several partial substitutions of Nd for Y utilizing aero-acoustic levitation and drop tube processing. Aero-acoustic levitation experiments were performed in air on the YBasb2Cusb3Osb{7-delta} compound. In these experiments, the liquidus at this composition and the solidification velocity of the peritectic transformation Ysb2BaCuOsb5\\\\ + liquid ->\\\\

James Randall Olive

1998-01-01

230

Angular Momentum Diagrams  

NASA Astrophysics Data System (ADS)

Starting from the simplest possible building blocks--a ket, a bra, a time-reversed ket, and a time-reversed bra--a diagrammatic formalism is developed for angular momentum coupling problems. The formalism comprises Clebsch-Gordan coefficients as well as 3jm-symbols. The idea of constructing invariants (internal lines) by contracting contragredient pairs of quantities is emphasized throughout. The Clebsch-Gordan series, and its extension to the coupling of more than two angular momenta, is introduced algebraically and diagrammatically. Recoupling between bases obtained in different coupling schemes is introduced and the connection between recoupling coefficients and irreducible 3nj-symbols is derived diagrammatically. The well-known diagrammatic rules due to Jucys and co-workers are derived by group theoretical means and simple rules for their practical exploitation are presented.

Wormer, Paul E. S.; Paldus, Josef

231

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

232

Attribute Blocks  

NSDL National Science Digital Library

This interactive Java applet gives students practice in sorting attribute blocks by color, shape, or size. In each problem students are presented with a set of objects that share a common attribute, and they must identify objects from another set that have the same attribute. Students can check their solution, and have another try or request a new problem. Teacher information about the blocks and their classroom implementation is included.

2011-01-01

233

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

234

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

235

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

236

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

237

Simple thermodynamic diagrams for real refrigeration systems  

NASA Astrophysics Data System (ADS)

The thermodynamic performance of real irreversible cooling and refrigeration systems (chillers) can be summarized in simple rectangular temperature-entropy diagrams, in analogy to classic pedagogical examples for idealized reversible devices. The key to translating complex dissipative losses into this graphical framework is the process average temperature-a factor that can be calculated from nonintrusive experimental measurements, for converting entropy production into lost work. An uncomplicated thermodynamic model is used to transform the governing chiller performance equations into an easily-interpreted graph. Examples based upon actual data from commercial work-driven (reciprocating) and heat-driven (absorption) chillers are presented, and are used to highlight the predominance of internal dissipation in determining chiller efficiency. With the thermodynamic diagram representation, the relative roles of each irreversibility source, as well as the reversible and endoreversible limits, become transparent.

Gordon, J. M.; Ng, K. C.; Chua, H. T.

1999-01-01

238

Phase diagram determinations in Y(x) Nd(1-x) Ba(2) Cu(3) O(y) systems via novel containerless processing techniques  

NASA Astrophysics Data System (ADS)

Containerless melt processing experiments have been performed on the copper oxide superconductors YBasb2Cusb3Osb{7-delta}, NdBasb2Cusb3Osb{x}, and several partial substitutions of Nd for Y utilizing aero-acoustic levitation and drop tube processing. Aero-acoustic levitation experiments were performed in air on the YBasb2Cusb3Osb{7-delta} compound. In these experiments, the liquidus at this composition and the solidification velocity of the peritectic transformation Ysb2BaCuOsb5\\ + liquid ->\\ YBasb2Cusb3Osb{7-delta} were determined. Drop tube experiments were performed in 20%Osb2-He on YBasb2Cusb3Osb{7-delta} at 1650, 1720, and 1750sp°C and in oxygen on YBasb2Cusb3Osb{7-delta}, Ysb{.9}Ndsb{.l}Basb2Cusb3Osb{x}, Ysb{.8}Ndsb{.2}Basb2Cusb3Osb{x}, Ysb{.7}Ndsb{.3}Basb2Cusb3Osb{x}, Ysb{.5}Ndsb{.5}Basb2Cusb3Osb{x}, Ysb{.3}Ndsb{.7}Basb2Cusb3Osb{x}, Ysb{.1}Ndsb{.9}Basb2Cusb3Osb{x}, and NdBasb2Cusb3Osb{x} at temperatures of 1400-1800sp°C. In oxygen experiments, the liquidus was determined between pure YBasb2Cusb3Osb{7-delta} and NdBasb2Cusb3Osb{x} and determinations of the range of solid solution of the REBasb2Cusb3Osb{x} were attempted at several compositions.

Olive, James Randall

239

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

240

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

241

A new Approach for Absolute Paleointensity Determination: Consideration on Blocking Processes Between Temperature and Interaction-Field  

NASA Astrophysics Data System (ADS)

Numerous paleomagnetic studies showed that only rarely the magnetic carriers in rocks are pure non- interacting single-domain (SD) grains. In most cases, samples contain mixture of pseudo-single domain (PSD), multidomain (MD), and/or SD particles with strong magnetic grain/or domain interactions. Our recent investigations indicate that magnetostatic interactions within magnetic particles can seriously affect the properties of thermal remanent magnetization (TRM) and generate non-ideal behavior for the Thellier-Coe paleointensity experiment. Here we present a new method for absolute paleointensity determination for the case where magnetostatic interactions among particles generally exist. We demonstrate that, with the presence of strong magnetostatic interactions, grain's unblocking temperature (Tub) will not equal to its blocking temperature (Tb). Significant viscous effect will also exist, that is, TRM will be blocked or unblocked more at slower cooling or heating rate. At the temperature that is higher than the ideal maximum Tub of an assemblage of clustered SD particles, the interacting field will disappear statistically, the particles will be reset, and acquire a completely magnetized TRM (CM_TRM) during successively cooling, which is identical to the total TRM (cooled from Curie temperature to room temperature). This is the crucial point of our new experimental method for paleointensity determination: we compare the unblocking temperature spectra of the CM_TRM part of an artificial TRM with that of natural remanent magnetization (NRM) to estimate paleointensity, rather than comparing the unblocking spectra of NRM with blocking spectra of progressive artificial TRM, which is used in the traditional Thellier-Coe method. The premise of our new method is that, if the unblocking spectra of CM_TRM of an artificial TRM can be obtained before significant laboratory physicochemical alteration occurs, a reliable paleointensity can be extracted from samples, even for those samples that contain PSD and MD grains. To illustrate these characteristics and validate our method, we have conducted detailed experiments on several representative artificial magnetite samples and will present these results at the meeting.

Zheng, Z.; Zhao, X.

2006-12-01

242

Severe block in processing of proinsulin to insulin accompanied by elevation of des-64,65 proinsulin intermediates in islets of mice lacking prohormone convertase 1/3.  

PubMed

The neuroendocrine processing endoproteases PC2 and PC1/3 are expressed in the beta cells of the islets of Langerhans and participate in the processing of proinsulin to insulin and C-peptide. We have previously shown that disruption of PC2 (SPC2) expression significantly impairs proinsulin processing. Here we report that disruption of the expression of PC1/3 (SPC3) produces a much more severe block in proinsulin conversion. In nulls, pancreatic and circulating proinsulin-like components comprise 87% and 91%, respectively, of total insulin-related immunoreactivity. Heterozygotes also show a more than 2-fold elevation in proinsulin levels to approximately 12%. Immunocytochemical and ultrastructural studies of the beta cells reveal the nearly complete absence of mature insulin immunoreactivity and its replacement by that of proinsulin in abundant immature-appearing secretory granules. In contrast, alpha cell morphology and glucagon processing are normal, and there is also no defect in somatostatin-14 generation. Pulse-chase labeling studies confirm the existence of a major block in proinsulin processing in PC1/3 nulls with prolongation of half-times of conversion by 7- and 10-fold for proinsulins I and II, respectively. Lack of PC1/3 also results in increased levels of des-64,65 proinsulin intermediates generated by PC2, in contrast to PC2 nulls, in which des- 31,32 proinsulin intermediates predominate. These results confirm that PC1/3 plays a major role in processing proinsulin, but that its coordinated action with PC2 is necessary for the most efficient and complete processing of this prohormone. PMID:12136131

Zhu, Xiaorong; Orci, Lelio; Carroll, Raymond; Norrbom, Christina; Ravazzola, Mariella; Steiner, Donald F

2002-07-22

243

Severe block in processing of proinsulin to insulin accompanied by elevation of des-64,65 proinsulin intermediates in islets of mice lacking prohormone convertase 1/3  

PubMed Central

The neuroendocrine processing endoproteases PC2 and PC1/3 are expressed in the ? cells of the islets of Langerhans and participate in the processing of proinsulin to insulin and C-peptide. We have previously shown that disruption of PC2 (SPC2) expression significantly impairs proinsulin processing. Here we report that disruption of the expression of PC1/3 (SPC3) produces a much more severe block in proinsulin conversion. In nulls, pancreatic and circulating proinsulin-like components comprise 87% and 91%, respectively, of total insulin-related immunoreactivity. Heterozygotes also show a more than 2-fold elevation in proinsulin levels to ?12%. Immunocytochemical and ultrastructural studies of the ? cells reveal the nearly complete absence of mature insulin immunoreactivity and its replacement by that of proinsulin in abundant immature-appearing secretory granules. In contrast, ? cell morphology and glucagon processing are normal, and there is also no defect in somatostatin-14 generation. Pulse–chase labeling studies confirm the existence of a major block in proinsulin processing in PC1/3 nulls with prolongation of half-times of conversion by 7- and 10-fold for proinsulins I and II, respectively. Lack of PC1/3 also results in increased levels of des-64,65 proinsulin intermediates generated by PC2, in contrast to PC2 nulls, in which des- 31,32 proinsulin intermediates predominate. These results confirm that PC1/3 plays a major role in processing proinsulin, but that its coordinated action with PC2 is necessary for the most efficient and complete processing of this prohormone.

Zhu, Xiaorong; Orci, Lelio; Carroll, Raymond; Norrbom, Christina; Ravazzola, Mariella; Steiner, Donald F.

2002-01-01

244

Advantages of enthalpy-temperature diagrams for nonazeotropic refrigerant mixtures  

NASA Astrophysics Data System (ADS)

The enthalpy-temperature diagram for nonazeotropic refrigerant mixtures has illustrative and useful features, combining the advantages of the entropy-temperature diagram and the enthalpy-pressure diagram commonly used in the refrigeration and heat pump industry. Plotting temperature versus enthalpy has advantages similar to those of plotting pressure versus enthalpy, and has the additional advantages of depicting the temperature profiles for both sides of the heat exchange equipment during the cycle. This additional advantage is particularly useful for analyzing the vapor compression refrigeration cycle using nonazeotropic refrigerant mixtures, where nonisothermal phase-change processes occur. Problems such as heat exchanger pinch-points and wet compression are easily detected. The possible cycle enhancement due to a liquid-to-suction heat exchanger is readily apparent. This paper presents and discusses examples of enthalpy-temperature diagrams.

Granryd, E.; Conklin, J. C.; Sand, J. R.

1991-08-01

245

Pattern Blocks  

NSDL National Science Digital Library

This virtual manipulative offers pattern blocks of different shapes and in different colors which can be used for a range of activities. In addition, the resource offers descriptions of six example activities in the 'Activities' section, and a sample lesson plan in the section 'Parent/Teacher'.

Manipulatives, National L.

2008-12-10

246

Base Blocks  

NSDL National Science Digital Library

This flexible interactive Java applet helps users develop place value concepts with whole numbers or up to 3 decimal places. Users can use the virtual blocks to freely explore place value grouping rules or to represent a target number provided by the applet. Users may change the default of base 10 to any of the bases 2, 3, 4, or 5.

2010-01-01

247

UML 2 activity model support for systems engineering functional flow diagrams  

Microsoft Academic Search

This article compares Activity models of the Unified Modeling Language, version 2 (UML 2) (OMG (Object Management Group), UML 2.0 superstructure specification, August 2003, http:\\/\\/www.omg.org\\/cgi-bin\\/doc?ptc\\/03-08-02), to a widely-used systems engineering (SE) flow diagram, the Enhanced Functional Flow Block Diagram (EFFBD) (J. Long, Relationships between common graphical representations in system engineering, ViTech Corporation, 2002), and to the requirements for functional flow

Conrad Bock

2003-01-01

248

Lawrence Block  

Microsoft Academic Search

Hollywood films owe much of their sparkle to atmospheric effects, including the lighting, shading, and color lent by character-actors. Their counterparts in the genre of literary gumshoes may be found in a certain breed of character-detectives. Among them, Lawrence Block, a versatile exemplar of the hard-boiled school of detective fiction, has given readers two notable repeat offenders from New York:

Steven Alan Samson

1994-01-01

249

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.

250

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

251

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

252

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.

253

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

254

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

255

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

256

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

257

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

258

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

259

Ecohydrological Processes in Cutover Peatlands: The Impact of Peatland Restoration (Rewetting) on the Site Hydrology and Water Balance of an Abandoned Block-cut bog in Quebec  

NASA Astrophysics Data System (ADS)

Artificial drainage networks established throughout peatlands during the peat extraction process often remain active following abandonment, maintaining a water table relatively far from the surface of the peat and hindering the survival and reestablishment of Sphagnum mosses. In an effort to restore a suitable hydrological regime, the primary drainage network of an abandoned cutover peatland (the Cacouna bog) was blocked with a series of peat dams, resulting in a site-averaged water table rise of 32 cm. The components of the water balance and site hydrology were monitored over three consecutive study periods (2005-2006 prior to rewetting; 2007 following rewetting), permitting quantification of the altered hydrologic conditions due to rewetting. Following ditch blocking, runoff was reduced from 23 to 10% of precipitation during the 2005/2006 (two-year average) and 2007 seasons, respectively. The higher water table and blocked drainage network resulted in increased runoff variability, dependant upon antecedent conditions (capacity to retain additional water on-site) and event-based precipitation dynamics. Evapotranspiration (ET) remained the major water loss from the site in each year, comprising 91, 77 and 91% of total outputs during the 2005, 2006 and 2007 seasons, respectively. ET rates were 25% higher in 2007 following rewetting (3.6 mm/day), compared to pre-restoration ET rates of 2.7 mm/day during both the 2005 and 2006 study periods. Storage changes were restricted following rewetting, due to reduced runoff losses limiting water table drawdown, thereby constraining peat compression and preventing undue drying of the unsaturated zone. An average surface level rebound of 3 cm was observed, increasing the mean hydraulic conductivity by an order of magnitude. There is a need to understand the impact of site rewetting on the system hydrology, to facilitate a timely return to a functioning ecohydrological state following disturbance. The intention of this presentation is to provide an overview of the hydrological regime prior to, and following, rewetting.

Ketcheson, S. J.; Price, J. S.

2009-05-01

260

Triple quantum dots: Two path transport and electrostatic stability diagram  

NASA Astrophysics Data System (ADS)

We present analysis of measurements on a triple quantum dot with a two path setup. The electron transport along both paths is recorded as well as charging data measured with a quantum point contact. The results are compared with an electrostatic model. This model allows for the full visualization of the three dimensional stability diagram for triple quantum dots. It is found that this diagram contains a central diamond shaped plane at which one specific quantum cellular automata (QCA) process occurs. Moreover quadruple points are found with four degenerate charge configurations. The QCA process defines the quadruple points and limits their number to six.

Rogge, M. C.; Haug, R. J.

2010-02-01

261

Block Copolymers with a Twist  

SciTech Connect

Chiral block copolymers (BCPs*) comprising chiral entities were designed to fabricate helical architectures (i.e., twisted morphologies) from self-assembly. A new helical phase (H*) with P622 symmetry was discovered in the self-assembly of poly(styrene)-b-poly(l-lactide) (PS-PLLA) BCPs*. Hexagonally packed, interdigitated PLLA helical microdomains in a PS matrix were directly visualized by electron tomography. The phase diagram of the PS-PLLA BCPs* was also established. Phase transitions from the H* phase to the stable cylinder and gyroid phases were found after long-time annealing, suggesting that the H* is a long-lived metastable phase. In contrast to racemic poly(styrene)-b-poly(d,l-lactide) BCPs, chiral interaction significantly enhances the incompatibility between achiral PS and chiral PLLA blocks in the PS-PLLA BCPs* and can be estimated through the determination of the interaction parameter.

Ho, R.; Chiang, Y; Chen, C; Wang, H; Hasegawa, H; Akasaka, S; Thomas, E; Burger, C; Hsiao, B

2009-01-01

262

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

263

Preliminary Master Logic Diagram for ITER operation  

SciTech Connect

This paper describes the work performed to develop a Master Logic Diagram (MLD) for the operations phase of the International Thermonuclear Experimental Reactor (ITER). The MLD is a probabilistic risk assessment tool used to identify the broad set of potential initiating events that could lead to an offsite radioactive or toxic chemical release from the facility under study. The MLD described here is complementary to the failure modes and effects analyses (FMEAs) that have been performed for ITER`s major plant systems in the engineering evaluation of the facility design. While the FMEAs are a bottom-up or component level approach, the MLD is a top-down or facility level approach to identifying the broad spectrum of potential events. Strengths of the MLD are that it analyzes the entire plant, depicts completeness in the accident initiator process, provides an independent method for identification, and can also identify potential system interactions. MLDs have been used successfully as a hazard analysis tool. This paper describes the process used for the ITER MLD to treat the variety of radiological and toxicological source terms present in the ITER design. One subtree of the nineteen page MLD is shown to illustrate the levels of the diagram.

Cadwallader, L.C. [INEEL, Idaho Falls, ID (United States); Taylor, N.P.; Poucet, A.E. [ITER San Diego Joint Work Site, La Jolla, CA (United States)

1998-04-01

264

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

265

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

266

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

267

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

268

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

269

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

270

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

271

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

272

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

273

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

274

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

275

Characterization of a Replication-Defective Human Immunodeficiency Virus Type 1 att Site Mutant That Is Blocked after the 3? Processing Step of Retroviral Integration  

PubMed Central

Two activities of retroviral integrase, 3? processing and DNA strand transfer, are required to integrate viral cDNA into a host cell chromosome. Integrase activity has been analyzed in vitro using purified protein and recombinant DNA substrates that model the U3 and U5 ends of viral cDNA or by using viral preintegration complexes (PICs) that form during virus infection. Numerous studies have investigated changes in integrase or viral DNA for effects on both 3? processing and DNA strand transfer activities using purified protein, but similar analyses have not been carried out using PICs. Here, we analyzed PICs from human immunodeficiency virus type 1 (HIV-1) strain 604del, an integration-defective mutant lacking 26 bp of U5, and revE1, a revertant of 604del containing an additional 19-bp deletion, for levels of 3? processing activity that occurred in infected cells and for levels of in vitro DNA strand transfer activity. Whereas revE1 supported one-third to one-half of the level of wild-type DNA strand transfer activity, the level of 604del DNA strand transfer activity was undetectable. Surprisingly, integrase similarly processed the 3? ends of 604del and revE1 in vivo. We therefore conclude that 604del is blocked in its ability to replicate in cells after the 3? processing step of retroviral integration. Whereas Western blotting showed that wild-type, revE1, and 604del PICs contained similar levels of integrase protein, Mu-mediated PCR footprinting revealed only minimal protein-DNA complex formation at the ends of 604del cDNA. We propose that 604del is replication defective because proteins important for DNA strand transfer activity do not stably associate with this cDNA after in vivo 3? processing by integrase.

Chen, Hongmin; Engelman, Alan

2000-01-01

276

Seismic reflection profiling in the Proterozoic Arunta Block, central Australia: processing for testing models of tectonic evolution  

NASA Astrophysics Data System (ADS)

The region extending from the northern Amadeus Basin to the Northern Arunta Province is characterised by a large change in Bouguer gravity (1400 ? s-2), abrupt changes in teleSeismic travel-time residuals and large thrust structures in which rocks from the lower crust are now exposed at the surface. Deep Seismic reflection data, other geophysical data and geological mapping within this region have contributed to the development of a crustal model that would result from “thick-skinned” tectonic processes, in which deformation occurred along moderately dipping thrusts or shear zones that extended from the surface down to at least the crust-mantle boundary. Two important features of this model have emerged with the help of unconventional stacking techniques. The first is a series of reflections from the Redbank Deformed Zone that can be traced from surface outcrop to depths of more than 30 km. The second is evidence of a fault extending through the crust and displacing the Moho.

Goleby, B. R.; Kennett, B. L. N.; Wright, C.; Shaw, R. D.; Lambeck, K.

1990-02-01

277

Microfluidic Evaporation for Phase Diagram Screening  

NASA Astrophysics Data System (ADS)

We use a pervaporation-based microfluidic device to concentrate solutions in a controlled way. This allows us to develop chips for phase diagram screening,and to study both fundamental and technological issues, such as the impact of kinetic pathway of concentration on a variety of aqueous solutions (colloids, surfactants, polymers and mixtures of thereof). The first part of the presentation will deals with the characterization of the concentration process (including analytical results, numerical simulations, and experimental observations). It will be shown that our device is well suited for a wide range of particle sizes in the colloidal range. In the second part, we will present results obtained on several systems during (along) the concentration process (surfactants and polymers). On-chip FRAP (fluorescence recovery after photobleaching) and microrheology measurements will be presented in addition to optical and fluorescence microscopy.

Moreau, Patrick; Salmon, Jean-Baptiste; Leng, Jacques

2007-11-01

278

Chloroquine blocks the autophagic process in cisplatin-resistant osteosarcoma cells by regulating the expression of p62/SQSTM1.  

PubMed

Cisplatin (DDP) is one of the most effective chemotherapeutic drugs against osteosarcoma (OS), the most common malignant bone-specific tumor. However, the acquired resistance to DDP limits its effectiveness in tumor treatment. In this study, in order to elucidate the mechanisms of drug resistance in cancer cells, we investigated cell death induced by DDP in OS cells. We evaluated the contribution of autophagy in the process of drug resistance in a panel of four OS cell lines, MG-63, U-2OS, MNNG/HOS and Saos-2. The cells were treated with DDP (0-50 µM) for 48 h and then cell vaibility was assessed using the Cell Counting kit-8 (CCK-8). Apoptosis was detected by flow cytometry and the green fluorescent protein (GFP)-microtubule-associated protein 1 light chain 3 (LC3) expression vector was used to visualize the formation of autophagic vesicles. Our results demonstrated that autophagy was induced by DDP in the drug-resistant cell line, Saos-2, which does not respond to DDP with apoptosis. DDP-induced autophagy protected the Saos-2 cells from apoptotic cell death. Moreover, the inhibition of autophagy by chloroquine, an inhibitor of lysosomal proteases, accelerated the DDP-induced cell death in Saos-2 cells. We also found that during DDP treatment, the protein expression level of the autophagic regulator, p62/sequestosome 1 (SQSTM1), decreased during the first hour of treatment, followed by a rapid recovery. Therefore, our data suggest a potential clinical therapy by targeting autophagy with chloroquine or monoclonal antibodies for the treatment of drug-resistant OS. PMID:23722646

Shen, Chengchun; Wang, Wenzhe; Tao, Lijiang; Liu, Bing; Yang, Zhengming; Tao, Huimin

2013-05-30

279

TCD: A Text-Based UML Class Diagram Notation and Its Model Converters  

NASA Astrophysics Data System (ADS)

Among several diagrams defined in UML, the class diagram is particularly useful through entire software development process, from early domain analysis stages to later maintenance stages. However conventional UML environments are often inappropriate for collaborative modeling in physically remote locations, such as exchanging models on a public mailing list via email. To overcome this issue, we propose a new diagram notation, called "TCD" (Text-based uml Class Diagram), for describing UML class diagrams using ASCII text. Since text files can be easily created, modified and exchanged in anywhere by any computing platforms, TCD facilitates the collaborative modeling with a number of unspecified people. Moreover, we implemented model converters for converting in both directions between UML class diagrams described in the XMI form and those in the TCD form. By using the converters, the reusability of models can be significantly improved because many of UML modeling tools support the XMI for importing and exporting modeling data.

Washizaki, Hironori; Akimoto, Masayoshi; Hasebe, Atsushi; Kubo, Atsuto; Fukazawa, Yoshiaki

280

The Positive and Negative Learning Process in Octopus Vulgaris Lamarack. Influence of the Vertical and Median Superior Frontal Lobes.  

National Technical Information Service (NTIS)

A block diagram was constructed, in order to clarify the functions of the vertical and median superior frontal lobes of the brain, for the process by which Octopus vulgaris builds up to the values of a command to attack an object in its visual field. This...

H. Maldonado

1965-01-01

281

On Predicting the Forming Limit Diagram for Automotive Aluminium Sheet  

Microsoft Academic Search

Aluminum has considerable potential as a material for automotive panels. The ability to predict forming limit diagrams accurately for aluminum is important for preventing failure in the forming process. A method is proposed to develop forming limits using Hill's 1993 yield criterion. Predicted limit strains based on both Hill's 1948 and 1993 yield criterion are compared with experimental data for

Siguang Xu; K. J. Weinmann

1998-01-01

282

A fault tree analysis strategy using binary decision diagrams  

Microsoft Academic Search

The use of binary decision diagrams (BDDs) in fault tree analysis provides both an accurate and efficient means of analysing a system. There is a problem, however, with the conversion process of the fault tree to the BDD. The variable ordering scheme chosen for the construction of the BDD has a crucial effect on its resulting size and previous research

Karen A. Reay; John D. Andrews

2002-01-01

283

Coadsorption phase diagram for CH4\\/CCl4 on graphite  

Microsoft Academic Search

We present an extensive thermodynamic study of methane coadsorbed on graphite precoated with a saturated monolayer of carbon tetrachloride. A combination of heat capacity and volumetric equation of state data permit construction of the multilayer coadsorption phase diagram between 70 and 115K . Displacement of the preadsorbed CCl4 by CH4 occurs by a continuous process across the temperature range studied.

William J. Weber; David L. Goodstein

2006-01-01

284

Project Management Plan for the INEL technology logic diagrams  

SciTech Connect

This Project Management Plan (PjMP) describes the elements of project planning and control that apply to activities outlined in Technical Task Plan (TTP) ID-121117, ``Technology Logic Diagrams For The INEL.`` The work on this project will be conducted by personnel in EG&G Idaho, Inc.`s Waste Technology Development Program. Technology logic diagrams represent a formal methodology to identify technology gaps or needs within Environmental Restoration/Waste Management Operations, which will focus on Office of Environmental Restoration and Waste Management (EM-50) research and development, demonstration, test, and evaluation efforts throughout the US Department of Energy complex. This PjMP describes the objectives, organization, roles and responsibilities, workscope and processes for implementing and managing the technology logic diagram for the Idaho National Engineering Laboratory project.

Rudin, M.J.

1992-10-01

285

Project Management Plan for the INEL technology logic diagrams  

SciTech Connect

This Project Management Plan (PjMP) describes the elements of project planning and control that apply to activities outlined in Technical Task Plan (TTP) ID-121117, Technology Logic Diagrams For The INEL.'' The work on this project will be conducted by personnel in EG G Idaho, Inc.'s Waste Technology Development Program. Technology logic diagrams represent a formal methodology to identify technology gaps or needs within Environmental Restoration/Waste Management Operations, which will focus on Office of Environmental Restoration and Waste Management (EM-50) research and development, demonstration, test, and evaluation efforts throughout the US Department of Energy complex. This PjMP describes the objectives, organization, roles and responsibilities, workscope and processes for implementing and managing the technology logic diagram for the Idaho National Engineering Laboratory project.

Rudin, M.J.

1992-10-01

286

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

287

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

288

Fault Diagnosis for Reciprocating Air Compressor Valve Using PV Indicator Diagram and SVM  

Microsoft Academic Search

This paper presents a method of fault diagnosis for the reciprocating air compressor valve based on the indicator diagram and the support vector machine (SVM). This paper strikes 7 invariant moments of the indicator diagram of reciprocating air compressor, using image processing methods, according to the same moment theory. Then the method can be used to extract effective features as

Fengtao Wang; Lutao Song; Liang Zhang; Haifeng Li

2010-01-01

289

Computer generation of Feynman diagrams for perturbation theory. II. Program description  

Microsoft Academic Search

The program p. T. DIAGRAM GENERATlON written in FORTRAN IV for the S 360\\/; 75 computer is described for finding pertinent topologically distinct diagrams of ; the Hugenholtz type, which are necessany in calculations of correlation energies, ; ionization potentials, and electron affinities, excitation energies, and double ; ionization processes using the field theoretical form of the perturbation theory. ;

H. C. Wong; J. Paldus

1973-01-01

290

The Algorithm for Creating Weighted Voronoi Diagrams based on Cellular Automata  

Microsoft Academic Search

An algorithm model based on cellular automata for constructing Voronoi diagram of complex entities in grid space is proposed in this paper. The grids are abstracted as cells in the model take advantage of the discrete quality of CA. The belonging of cell is determined in the transaction process of cell's states. Voronoi diagrams in grid space are generated along

Wu Xiao-jun; Luo Xue-fang

2006-01-01

291

Analysis of a solid-on-solid type block model for particle redeposition in ion-beam erosion processes under normal incidence  

NASA Astrophysics Data System (ADS)

In this paper we present and investigate a simple yet physically plausible solid-on-solid type block model for the redeposition of eroded particles during ion-beam erosion processes under normal ion incidence. This model, which is based on a more general version presented in an earlier study, focuses on the very essential aspects of what one will commonly associate with the redeposition of sputtered particles. Other potential surface effects such as the Bradley-Harper mechanism are thus not taken account of. Additionally, the model is kept one-dimensional for reasons of simplicity. We introduce that model in detail, and then discuss its properties thoroughly. In particular, we show how to decouple the erosion and redeposition component in the formal description of the evolution process of the sputtered surfaces in order to derive a semi-analytical continuum approximation for both the erosion and the redeposition subprocess. The latter is investigated at length, and eventually a connection is drawn to the non-locally stabilized Kuramoto-Sivashinsky equation to discuss the potential role of particle redeposition as the physical origin of the damping term in that equation.

Anspach, Nils; Linz, Stefan J.

2012-06-01

292

Experimental determination of a time–temperature-transformation diagram of the undercooled Zr41.2Ti13.8Cu12.5Ni10.0Be22.5 alloy using the containerless electrostatic levitation processing technique  

Microsoft Academic Search

High temperature high vacuum electrostatic levitation was used to determine the complete time–temperature–transformation (TTT) diagram of the Zr41.2Ti13.8Cu12.5Ni10.0Be22.5 bulk metallic glass forming alloy in the undercooled liquid state. This is the first report of experimental data on the crystallization kinetics of a metallic system covering the entire temperature range of the undercooled melt down to the glass transition temperature. The

Y. J. Kim; R. Busch; W. L. Johnson; A. J. Rulison; W. K. Rhim

1996-01-01

293

A Working Model of Protein Synthesis Using Lego(TM) Building Blocks.  

ERIC Educational Resources Information Center

|Uses Lego building blocks to improve the effectiveness of teaching about protein synthesis. Provides diagrams and pictures for a 2-3 day student activity. Discusses mRNA, transfer RNA, and a protein synthesis model. (MVL)|

Templin, Mark A.; Fetters, Marcia K.

2002-01-01

294

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

295

CCM flare modeling using sensor intensity diagram  

NASA Astrophysics Data System (ADS)

Compact Camera Module (CCM) is widely used in PDAs, Cellular phones and PC web cameras. Nowadays CCM image quality level should match with photo-quality in that frame, optics plays an important role. Among the whole set of optical parameters, flare is particularly threatening as it can waste the world-best-design associated to the world-best-manufacturing-process optics resulting to a simple piece of plastic without any value. Because it acts at the border between optical designer and mechanical designer fields, it is a challenging parameter to study. In this paper, after defining Flare parameter, we show a powerful method for tracking Flare among a complete CCM, through the use of the sensor's emitted intensity diagram. Following this procedure will prevent from random time consuming calculations on flare topic.

Ramel, Romain

2005-09-01

296

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

297

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

298

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

299

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

300

Baroplastic Block copolymers  

NASA Astrophysics Data System (ADS)

Block copolymers with rubbery and glassy components have been observed to have pressure induced miscibility. These microphase-separated materials, termed baroplastics, were able to flow and be processed at temperatures below the Tg of the glassy component by simple compression molding and extrusion. Diblock and triblock copolymers of polystyrene and poly(butyl acrylate) or poly(2-ethyl hexyl acrylate) were synthesized by atom transfer radical polymerization (ATRP) and processed at room temperature into well defined transparent objects. SAXS and SANS measurements demonstrated partial mixing between components as a result of pressure during processing. DSC results also show the presence of distinct domains even after several processing cycles. Their mechanical properties after processing were tested and compared with commercial thermoplastic elastomers.

Hewlett, Sheldon A.

2005-03-01

301

Data-Driven Implementation of Data Flow Diagrams  

Microsoft Academic Search

Current software engineering methods employ a variety of design notations and techniques during the development process. This paper suggests a new, unified approach to developing software, termed Program\\/System Design. Programs are viewed as being made up of systems of data-coupled, data-activated processing units. Using a coherent hierarchy of data flow diagrams, complex systems are specified as compositions of successively simpler

Robert G. Babb II; R. G. II

1982-01-01

302

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

303

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

304

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

305

Failure analysis of railway brake blocks  

Microsoft Academic Search

Past efforts of the Nigerian Railway Corporation to produce shoe brake blocks locally have proved unsuccessful; the brake blocks produced are defective, and are highly susceptible to brittle (catastrophic) failure. The objective of this work was to undertake failure analysis of locally produced shoe blocks, and to design a metallurgical process to produce efficient ones. To this end, mechanical and

John Ade Ajayi; O. A. Adeleke

1997-01-01

306

Structure of Epitaxially Assembled Block Copolymer Domains  

Microsoft Academic Search

Epitaxial self-assembly of block copolymers is promising for integrated circuit patterning, but it is unclear how the shape of the block copolymer domains is deformed by the epitaxy process, or if the intrinsic roughness of the block copolymer interface is too large to be suitable for manufacturing. We use soft x-ray diffraction to characterize the size, shape, and interface structure

Gila Stein; J. Alexander Liddle; Andrew Aquila; Eric Gullikson

2010-01-01

307

Mineralogy, Pb and O isotopic characteristics of granitic rocks from the Nansha block (South China Sea): magmatic process and tectonic affiliation  

NASA Astrophysics Data System (ADS)

The pre-Cenozoic evolution history of South China Sea (SCS) region has been in debate. It can provide important clues to understand the evolution history by studying on the petrogenesis of granitic rocks from the Nansha micro-block (SCS) and the tectonic affiliation issue of the micro-block. This study analyzed mineral composition (including feldspar, biotite and hornblede), oxygen isotope data of nine rock sample and whole-rock lead isotope data of four representative rocks samples, and the samples is from two dredged station performed in the Nansha micro-block during geological surveys over the South China Sea since 2000. Using mineral compositions and appropriate geothermobarometers, this study calculated the crystallization temperature and depth of Group I rocks (the rock type is represented by tonalite and granodiorite ) is 400 to 654 degree Celsius and 17km, respectively, and those of group II rocks (the rock type is represented by monzogranite) is 380 to 520 degree Celsius and 9-10km, respectively. Oxygen isotope data, combined with Sr isotopic compositions, show that source contamination dominates in the magma evolution of Group I rocks (?18O=6.00-7.20‰, with the average value of 6.64‰), which is achieved by the input of materials and/ or fluids from subducted crust in Mesozoic subduction zone which existed in the southeast side of the Nansha micro-block, and both source contamination and crustal contamination play a role in the magma evolution of Group II rocks(?18O=6.86‰-9.13‰, with the average value of 7.75‰). As a whole, it takes on the trend from source contamination towards crustal contamination, from Group I rocks to Group II rocks. Pb isotopic compositions are characterized by highly radiogenic lead, and whole-rock initial lead isotopic ratios are 206Pb/204Pb=18.602~18.756, 207Pb/204Pb=15.660~15.713, 208Pb/204Pb=38.693~38.893. The Pb isotopic data show that the Nansha micro-block is tectonically affiliated with South China block (especially for Nanling-Hainan block), which is consistent with the results from Nd isotopic study. The determination of tectonic affiliation of the Nansha block suggest that the distributional scope of the South China block or the Nanling-Hainan block can be enlarged into some micro-blocks dispersed in the South China Sea. This study is helpful to further understanding the pre-Cenozoic evolution history of South China Sea (SCS) region.

Yan, Q.; Shi, X.

2009-12-01

308

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

309

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

310

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

311

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

312

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

313

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

314

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

315

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

316

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

317

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

318

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

319

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

320

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

321

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

322

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

323

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

324

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

325

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

326

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

327

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

328

Partial blocking and associative learning  

Microsoft Academic Search

We are going to explain partial blocking as the result of diachronic processes based on what we will call associative learning. Especially, we argue that the task posed by partial blocking phenomena is to explain their emergence from unambiguous and\\u000a fully expressive languages. This contrasts with approaches that presuppose underspecified semantic meanings or ineffability\\u000a like Bidirectional Optimality Theory (Bi–OT) and

Anton Benz

2006-01-01

329

Investigation of dynamic processes in the period of formation and development of the blocking anticyclone over European Russia in summer 2010  

NASA Astrophysics Data System (ADS)

The blocking anticyclone (BA) observed in the summer of 2010 over the European part of Russia led to enormous economical damage, substantially increased the mortality of the population, and had serious negative consequences for human health. Dynamic processes in the troposphere, i.e., wave trains, which could contribute to anticyclone formation and sustenance, are investigated. In order to study these wave trains, three-dimensional Plumb vectors have been calculated and analyzed. It is shown that, in June 2010, three wave trains propagated eastward in the troposphere over the Atlantics. The first two wave trains, having reached Europe, continued to propagate in eastern and southeastern directions. Only the third wave train, upon reaching Europe, continued to propagate toward the northeast and, on June 17-19, entered northwestern Russia. The anticyclone, which started to form on June 18 precisely in this region, subsequently developed into a stable BA observed over European Russia up to mid-August. The propagation direction of the wave trains could change due to the formation of a double structure of the zonal flow in the troposphere. The wave trains are revealed in the middle of June in regions with increased cloudiness over the northwestern part of the Atlantic Ocean and over the northwestern and northern parts of the central United States. Eastwardpropagating wave trains, which could contribute to the intensification of the corresponding BAs that brought anomalously high temperatures to European Russia, were also revealed in July and August of 2010 and 1972. The calculated 10-day backward trajectories are analyzed to determine the character of motions of air particles that penetrated into the anticyclone over the region of Moscow during the 2010 summer in the period of its development.

Vargin, P. N.; Luk'yanov, A. N.; Gan'shin, A. V.

2012-09-01

330

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

331

Image denoising with block-matching and 3D filtering  

Microsoft Academic Search

We present a novel approach to still image denoising based on effective filtering in 3D transform domain by combining sliding-window transform processing with block-matching. We process blocks within the image in a sliding manner and utilize the block-matching concept by searching for blocks which are similar to the currently processed one. The matched blocks are stacked together to form a

Kostadin Dabov; Alessandro Foi; Vladimir Katkovnik; Karen Egiazarian

2006-01-01

332

Biocompatible polylactide-block-polypeptide-block-polylactide nanocarrier.  

PubMed

Polypeptides are successfully incorporated into poly(l-lactide) (PLLA) chains in a ring-opening polymerization (ROP) of l-lactide by using them as initiators. The resulting ABA triblock copolymers possess molecular weights up to 11000 g·mol(-1) and polydispersities as low as 1.13, indicating the living character of the polymerization process. In a nonaqueous emulsion, peptide-initiated polymerization of l-lactide leads to well-defined nanoparticles, consisting of PLLA-block-peptide-block-PLLA copolymer. These nanoparticles are easily loaded by dye-encapsulation and transferred into aqueous media without aggregation (average diameter of 100 nm) or significant dye leakage. Finally, internalization of PLLA-block-peptide-block-PLLA nanoparticles by HeLa cells is demonstrated by a combination of coherent anti-Stokes Raman spectroscopy (CARS) and fluorescence microscopy. This demonstrates the promise of their utilization as cargo delivery vehicles. PMID:23540754

Dorresteijn, Robert; Ragg, Ruben; Rago, Gianluca; Billecke, Nils; Bonn, Mischa; Parekh, Sapun H; Battagliarin, Glauco; Peneva, Kalina; Wagner, Manfred; Klapper, Markus; Müllen, Klaus

2013-04-15

333

Artificial Neural Network Modeling of Forming Limit Diagram  

Microsoft Academic Search

Forming limit diagram (FLD) provides the limiting strains a sheet metal can sustain whilst being formed. In this paper, the formability of Ti6Al4V titanium alloy and Al6061-T6 aluminum alloy sheets is investigated experimentally using hydroforming deep drawing. Hecker's simplified technique [1] was used to obtain experimental FLDs for these sheet materials. Artificial neural network (ANN) modeling of the process based

A. Derogar; F. Djavanroodi

2011-01-01

334

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

335

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

336

Tectonic block rotation, arc curvature, and back-arc rifting: Insights into these processes in the Mediterranean and the western Pacific  

Microsoft Academic Search

The fastest modern-day tectonic block rotations on Earth (up to 9 degrees\\/Myr) occur in the forearcs of convergent plate margins where a transition from collision of a bathymetric high to subduction of normal oceanic crust occurs. GPS techniques have enabled accurate documentation of the kinematics of these rotations, leading us to develop a conceptual model where the change from collision

L. M. Wallace; S. Ellis; P. Mann

2008-01-01

337

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

338

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 ...

339

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 ...

340

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 ...

341

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 ...

342

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

343

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

344

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

345

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

346

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

347

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

348

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

349

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

350

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

351

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

352

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

353

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

354

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

355

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

356

A phase diagram for jammed matter.  

PubMed

The problem of finding the most efficient way to pack spheres has a long history, dating back to the crystalline arrays conjectured by Kepler and the random geometries explored by Bernal. Apart from its mathematical interest, the problem has practical relevance in a wide range of fields, from granular processing to fruit packing. There are currently numerous experiments showing that the loosest way to pack spheres (random loose packing) gives a density of approximately 55 per cent. On the other hand, the most compact way to pack spheres (random close packing) results in a maximum density of approximately 64 per cent. Although these values seem to be robust, there is as yet no physical interpretation for them. Here we present a statistical description of jammed states in which random close packing can be interpreted as the ground state of the ensemble of jammed matter. Our approach demonstrates that random packings of hard spheres in three dimensions cannot exceed a density limit of approximately 63.4 per cent. We construct a phase diagram that provides a unified view of the hard-sphere packing problem and illuminates various data, including the random-loose-packed state. PMID:18509438

Song, Chaoming; Wang, Ping; Makse, Hernán A

2008-05-29

357

The Human Immune Response to Plasmodium falciparum Includes Both Antibodies That Inhibit Merozoite Surface Protein 1 Secondary Processing and Blocking Antibodies  

Microsoft Academic Search

Malaria merozoite surface protein 1 (MSP1) is cleaved in an essential step during erythrocyte invasion. The responses of children to natural malaria infection included antibodies that inhibit this cleavage and others that block the binding of these inhibitory antibodies. There was no correlation between the titer of the antibody to the 19-kDa fragment of MSP1 and its inhibitory activity. These

Roseangela I. Nwuba; Olugbemiro Sodeinde; Chiaka I. Anumudu; Yusuf O. Omosun; Alexander B. Odaibo; Anthony A. Holder; Mark Nwagwu

2002-01-01

358

The colour hexagon: a chromaticity diagram based on photoreceptor excitations as a generalized representation of colour opponency  

Microsoft Academic Search

A chromaticity diagram which plots the 3 photoreceptor excitations of trichromatic colour vision systems at an angle of 120° is presented. It takes into acount the nonlinear transduction process in the receptors. The resulting diagram has the outline of an equilateral hexagon. It is demonstrated by geometrical means that excitation values for any type of spectrally opponent mechanism can be

Lars Chittka

1992-01-01

359

Block That Pain!  

MedlinePLUS

... combination produces a unique effect, blocking pain-sensing neurons without impairing signals from other cells. In contrast, ... surgical procedures block activity in all types of neurons. This can cause numbness, paralysis, and other nervous ...

360

Base Blocks Addition  

NSDL National Science Digital Library

This virtual manipulative provides base blocks that consist of individual "units," "longs," "flats," and "blocks" (ten of each set for base 10). They can be used to show place value for numbers and to increase understanding of addition and subtraction.

Manipulatives, National L.

2008-12-10

361

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

362

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

363

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

364

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

365

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

366

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

367

Hypoxia following interscalene block  

Microsoft Academic Search

Background and Objectives: Interscalene brachial plexus block is often used for surgeries involving the shoulder and upper arm. Known complications include phrenic nerve paralysis, intravascular injection, and cervical epidural block. We report a patient who developed acute hypoxia immediately following this block, presumably secondary to an acute pulmonary thromboembolus (PTE) coupled with phrenic nerve paralysis. Case Report: A 43-year-old man

Melissa Rose; Timothy J. Ness

2002-01-01

368

AdBlockVideo  

NSDL National Science Digital Library

Video ads can be quite a nuisance. AdBlockVideo can help users out by effectively blocking such ads. Visitors will need to download the program and they can toggle AdBlockVideo on and off as they see fit. This application is compatible with computers running Windows 98 and newer, Max OS 10.3 and newer, and Linux.

2011-01-01

369

1990 CENSUS BLOCK CENTROIDS  

EPA Science Inventory

The block_cen layer in the EPA New England database provides the centroids of block boundaries coverage based on the U.S. Bureau of the Census Public Law (PL) 94-171 data. The block_cen layer is an ARC/INFO point coverage....

370

Micellization of block copolymers  

Microsoft Academic Search

This article deals with recent progress including the author's work in the field of block copolymer self-assembly in solution and on solid surfaces. The synthesis methods for producing block copolymers with well-defined structures, molecular weights and composition are outlined with emphasis on ionic and controlled free radical polymerization techniques. A general overview of the preparation, characterization and theories of block

Gérard Riess

2003-01-01

371

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

372

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

373

The effects of Roundhouse diagram construction and use on meaningful science learning in the middle school classroom  

NASA Astrophysics Data System (ADS)

This research explored the effects of Roundhouse diagram construction and use on meaningful learning of science concepts in a 6th-grade science classroom. This investigation examined the transformation of students' science concepts as they became more proficient in constructing Roundhouse diagrams, what problems students encountered while constructing Roundhouse diagrams, and how choices of iconic images affected their progress in meaningfully learning science concepts as they constructed a series of Roundhouse diagrams. The process of constructing a Roundhouse diagram involved recognizing the learner's relevant existing concepts, evaluating the central concepts for a science lesson and breaking them down into their component parts, reconstructing the learner's conceptual framework by reducing the amount of detail efficiently, reviewing the reconstruction process, and linking each key concept to an iconic image. The researcher collected and analyzed qualitative and quantitative data to determine the effectiveness of the Roundhouse diagram. Data included field notes, observations, students' responses to Roundhouse diagram worksheets, students' perceptions from evaluation sheets, students' mastery of technique sheets, tapes and transcripts of students' interviews, student-constructed Roundhouse diagrams, and documentation of science grades both pre- and post-Roundhouse diagramming. This multiple case study focused on six students although the whole class was used for statistical purposes. Stratified purposeful sampling was used to facilitate comparisons as well as week-by-week comparisons of students' science grades and Roundhouse diagram scores to gain additional insight into the effectiveness of the Roundhouse diagramming method. Through participation in constructing a series of Roundhouse diagrams, middle school students gained a greater understanding of science concepts. Roundhouse diagram scores improved over time during the 10-week Roundhouse diagramming session. Students' science scores improved as they became more proficient in constructing the Roundhouse diagrams. The major problems associated with constructing Roundhouse diagrams were extracting the main ideas from the textbook, understanding science concepts in terms of whole/part relationships, paraphrasing sentences effectively, and sequencing events in an accurate order. A positive relationship existed for the case study group based on students' choices and drawings of iconic images and the meaningful learning of science concepts.

Ward, Robin Eichel

374

Controlled self-assembly of conjugated rod-coil block copolymers for applications in organic optoelectronics  

NASA Astrophysics Data System (ADS)

Organic electronics are of great interest in manufacturing light weight, mechanical flexible, and inexpensive large area devices. While significant improvements have been made over the last several years and it is now clear that morphology on the lengthscale of exciton diffusion (10nm) is of crucial importance, a clear relationship between structure and device properties has not emerged. This lack of understanding largely emerges from an inability to control morphology on this lengthscale. This thesis will center around an approach, based on block copolymer self-assembly, to generate equilibrium nanostructures on the 10 nm lengthscale of exciton diffusion and study their effects on device performance. Self-assembly of semiconducting block copolymers is complicated by the non-classical chain shape of conjugated polymers. Unlike classical polymers, the chains do not assume a Gaussian coil shape which is stretched near block copolymer interfaces, instead the chains are elongated and liquid crystalline. Previous work has demonstrated how these new molecular interactions and shapes control the phase diagram of so-called rod-coil block copolymers. Here, we will focus on controlling domain size, orientation, and chemical structure. While domain size can be controlled directly through molecular weight, this requires significant additional synthesis of domain size is to be varied. Here, the domain size is controlled by blending homopolymers into a self-assembling rod-coil block copolymer. When coil-like blocks are incorporated, the domains swell, as expected. When rod-like blocks are incorporated, they interdigitate with the rods of the block copolymers. This results in an increase in interfacial area which forces the coils to rearrange and an overall decrease in domain size with increasing rod content. Control over lamellar orientation is crucial in order to design and control charge transport pathways and exciton recombination or separation interfaces. While numerous techniques have been demonstrated for classical block copolymers, the pi conjugation in the rod blocks allow for additional control mechanisms. Liquid crystals are traditionally aligned in magnetic fields. Here, it is demonstrated that if the rod-like blocks are aligned unidirectionally, the block copolymer interfaces follow to create macroscopic alignment of the nanostructures. Organic Light Emitting Diodes (OLEDs) are generally composed of electron transporting and hole transporting moieties to balance charge recombination. Here, a new multifunctional bipolar rod-coil block copolymer containing the hole transporting and electron transporting materials is synthesized. Self-assembly of this new block copolymer results in 15nm lamellae oriented in grains both parallel and perpendicula to the anode. The self-assembled block copolymer shows superior device performance to controls consisting of a luminescent, analogous homopolymer, and a blend of the two component homopolymers. The effects of the morphologies and chemical structure on photovoltaics is explored with a rod-coil block copolymer, (poly(3-hexylthiophene-b-acrylic perylene)). By varying the kinetics of self-assembly through processing, the block copolymer can be disordered, ordered with only short range registry between the nanodomains, or with long-range order. The short range ordered samples showed the best device performance suggesting that the connectivity that is a biproduct of poor order is beneficial for device performance.

Tao, Yuefei

375

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

376

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

377

Blocking Delaunay triangulations  

PubMed Central

Given a set B of n black points in general position, we say that a set of white points W blocks B if in the Delaunay triangulation of B?W there is no edge connecting two black points. We give the following bounds for the size of the smallest set W blocking B: (i) 3n/2 white points are always sufficient to block a set of n black points, (ii) if B is in convex position, 5n/4 white points are always sufficient to block it, and (iii) at least n?1 white points are always necessary to block a set of n black points.

Aichholzer, Oswin; Fabila-Monroy, Ruy; Hackl, Thomas; van Kreveld, Marc; Pilz, Alexander; Ramos, Pedro; Vogtenhuber, Birgit

2013-01-01

378

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

379

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

380

Polyorganosiloxane-polyamide block copolymers  

US Patent & Trademark Office Database

A class of catalysts for the anionic copolymerization of cyclic lactams in the presence of .omega.-(N-acyllactam)polyorganosiloxanes, .alpha.,.omega.-di-(N-acyllactam)polyorganosiloxanes or star-shaped .omega.-(N-acyllactam)polyorganosiloxanes is disclosed. The catalysts successfully protect the siloxane prepolymer from harmful depolymerization reactions at elevated temperatures while anionically polymerizing the cyclic lactams via ringopening. Diblock, triblock, multiblock and star-block copolymers, e.g., of a polyorganosiloxane and a polyamide, with advantageously high polyorganosiloxane and polyamide block molecular weights and superior heat resistance can be synthesized with the catalysts. The composition of these block copolymers, with the structure AB, ABA, and star-(BA).sub.r, r .gtoreq.3, where A=polyamide and B=polyorganosiloxane, and the process for producing them are also described.

1993-02-02

381

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

382

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

383

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

384

Task structure semantics through process algebra  

Microsoft Academic Search

The task structure diagramming technique can be used to graphically denote processspecifications. In task structure diagrams, sequential execution, iteration, choice and parallelismcan be expressed. In this paper task structure diagrams are extended with asynchronisation mechanism and a formal semantics is given by means of a translation toProcess Algebra. By using known techniques for proving equivalence of process specificationsin Process Algebra,

A. H. M. ter Hofstede; E. R. Nieuwland

1993-01-01

385

Analysis of the TRIPS prototype block predictor  

Microsoft Academic Search

This paper analyzes the performance of the TRIPS proto- type chip's block predictor. The prototype is the first imple- mentation of the block-atomic TRIPS architecture, wherein the unit of execution is a TRIPS hyperblock. The TRIPS pro- totype predictor uses a two-step prediction process: it first predicts the exit from the current hyperblock and uses the predicted exit in conjunction

Nitya Ranganathan; Doug Burger; Stephen W. Keckler

2009-01-01

386

The Cognitive Dimension of Writer's Block.  

ERIC Educational Resources Information Center

A study investigated cognitive behaviors and processes that contribute to writer's block. Subjects were 10 college undergraduates who had scored at the extreme ends of a writer's block measurement instrument. The 10, 6 "high-blockers" and 4 "low-blockers," varied in their English experience, class standing, and majors. Each was given a writing…

Rose, Mike

387

Extended phase diagram of ASEP with two types of particles  

NASA Astrophysics Data System (ADS)

First introduced by Evans et al. (PR E, 74 208, (1995)), the Asymmetric Simple Exclusion Process (ASEP) has become an important model in the field. The model is simple in structure, however it offers an oppurtunity to study some of the basic characteristics of nonequilibrium systems. We use mean field, Monte Carlo, and RG methods to present a detailed phase diagram of the ASEP with two types of particles moving in opposite directions. The nature of the spontaneous symmetry broken phases will also be discussed.

Yesil, Ayse; Cemal Yalabik, M.

2012-02-01

388

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

389

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

390

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

391

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

392

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

393

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

394

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

395

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

396

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

397

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

398

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

399

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

400

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

401

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

402

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

403

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

404

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

405

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

406

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

407

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

408

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

409

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

410

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

411

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

412

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

413

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

414

Block Ciphers - A Survey  

Microsoft Academic Search

In this paper we give a short overview of the state of the art of secret key block ciphers. We focus on the main application\\u000a of block ciphers, namely for encryption. The most important known attacks on block ciphers are linear cryptanalysis and differential\\u000a cryptanalysis. Linear cryptanalysis makes use of so-called linear hulls i.e., the parity of a subset of

Lars R. Knudsen

1997-01-01

415

Working with Blocks  

Microsoft Academic Search

\\u000a Blocks are snippets of text or functionality that usually live outside the main content area of a web site, such as in the left\\u000a or right sidebars, in the header, in the footer, and so on. If you’ve ever logged in to a Drupal site or navigated to a Drupal\\u000a administrative interface, then you’ve used a block. Block permissions and

John K. VanDyk

416

Protein based Block Copolymers  

PubMed Central

Advances in genetic engineering have led to the synthesis of protein-based block copolymers with control of chemistry and molecular weight, resulting in unique physical and biological properties. The benefits from incorporating peptide blocks into copolymer designs arise from the fundamental properties of proteins to adopt ordered conformations and to undergo self-assembly, providing control over structure formation at various length scales when compared to conventional block copolymers. This review covers the synthesis, structure, assembly, properties, and applications of protein-based block copolymers.

Rabotyagova, Olena S.; Cebe, Peggy; Kaplan, David L.

2011-01-01

417

deepBlockAlign: a tool for aligning RNA-seq profiles of read block patterns  

PubMed Central

Motivation: High-throughput sequencing methods allow whole transcriptomes to be sequenced fast and cost-effectively. Short RNA sequencing provides not only quantitative expression data but also an opportunity to identify novel coding and non-coding RNAs. Many long transcripts undergo post-transcriptional processing that generates short RNA sequence fragments. Mapped back to a reference genome, they form distinctive patterns that convey information on both the structure of the parent transcript and the modalities of its processing. The miR-miR* pattern from microRNA precursors is the best-known, but by no means singular, example. Results: deepBlockAlign introduces a two-step approach to align RNA-seq read patterns with the aim of quickly identifying RNAs that share similar processing footprints. Overlapping mapped reads are first merged to blocks and then closely spaced blocks are combined to block groups, each representing a locus of expression. In order to compare block groups, the constituent blocks are first compared using a modified sequence alignment algorithm to determine similarity scores for pairs of blocks. In the second stage, block patterns are compared by means of a modified Sankoff algorithm that takes both block similarities and similarities of pattern of distances within the block groups into account. Hierarchical clustering of block groups clearly separates most miRNA and tRNA, and also identifies about a dozen tRNAs clustering together with miRNA. Most of these putative Dicer-processed tRNAs, including eight cases reported to generate products with miRNA-like features in literature, exhibit read blocks distinguished by precise start position of reads. Availability: The program deepBlockAlign is available as source code from http://rth.dk/resources/dba/. Contact: gorodkin@rth.dk; studla@bioinf.uni-leipzig.de Supplementary information: Supplementary data are available at Bioinformatics online.

Ekstr?m, Claus T.; Stadler, Peter F.; Hoffmann, Steve; Gorodkin, Jan

2012-01-01

418

Kinematic block model of Switzerland  

NASA Astrophysics Data System (ADS)

In 1997 swisstopo began to install and operate the Automated GPS Network for Switzerland (AGNES). Since then the network has been extended to more than 30 stations. From the time series swisstopo derives velocities which are used to create kinematic models of Switzerland under the assumption that the velocities correspond to the tectonic motion. However, one has to be aware of the very small crustal movements relative to the Eurasian plate. The expected velocities are in the range of 1 to 2 millimetres per year. Local influences like monumentation instability and landslides are not negligible and can bias the velocities significantly. For this purpose the time series were initially analysed for common mode effects and seasonal movements using stacking methods. Additional information from the Tectonic Map of Switzerland, published by swisstopo, helps to delimitate regions belonging to the same with kinematic pattern. The area covering the whole country has been separated into several blocks namely Jura, Basin, Prealps, and Alps. The movements of the blocks were determined by robust estimation, thus reducing the influence of velocities biased by local effects. During this process several stations had to be eliminated by reducing their weight in the inversion. The individual blocks were modelled by the assumption of rigid body dynamics. Two translations and one rotation about the Z-axis have been introduced for the horizontal movements. The vertical velocities are analysed separately using the same block assignments. The unknowns for each vertical block movement are one translation and two rotations about the X- and Y-axis. The block model gives a good first approximation of the tectonic deformation in Switzerlan

Villiger, Arturo; Geiger, Alain; Brockmann, Elmar

2010-05-01

419

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

420

A reverse engineering methodology to reconstruct hierarchical data flow diagrams for software maintenance  

Microsoft Academic Search

The methodology used to define a reverse engineering process that has been employed in an enhancement maintenance operation on a Pascal software system is described. Attention is focused on the methodology used to produce, from code, a hierarchy of data-flow diagrams (DFDs) at different levels of abstraction. DFDs are produced in the high-level design phase of a software production process

P. Benedusi; A. Cimitile; U. De Carlini

1989-01-01

421

Data Flow Diagramming Skills Acquisition: Impact of Cooperative versus Individual Learning  

ERIC Educational Resources Information Center

|Information systems (IS) process modeling using the technique of Data Flow Diagramming (viz., Systems Analysis) can be defined as a complex task for IS designers. This study draws from the domains of educational psychology and organizational behavior in examining the training of novices in conceptual process modeling. Specifically, an experiment…

Powell, Anne; Bordoloi, Bijoy; Ryan, Sherry D.

2007-01-01

422

Forming limit diagrams with the existence of through-thickness normal stress  

Microsoft Academic Search

Since necking in some processes such as hydroforming can occur at locations where in addition to the in-plane stresses a through thickness compressive stress acts, the plane stress assumption is not proper for these processes. Therefore, in this study, the effect of normal stress has been examined on the prediction of the forming limit diagrams (FLDs). Determination of the FLD

Ahmad Assempour; Hamid Khakpour Nejadkhaki; Ramin Hashemi

2010-01-01

423

Generalised forming limit diagrams showing increased forming limits with non-planar stress states  

Microsoft Academic Search

The forming limit diagram and its associated analytical and experimental techniques has been widely used for 40 years with the assumption that sheet deformation occurs inplane-stress. Some hydro-forming type processes induce significant normal stress across the workpiece and this has led to a small number of extended formability analyses. However, recent work on the incremental sheet forming process which is

Julian M. Allwood; Daniel R. Shouler

2009-01-01

424

INLAND DISSOLVED SALT CHEMISTRY: STATISTICAL EVALUATION OF BIVARIATE AND TERNARY DIAGRAM MODELS FOR SURFACE AND SUBSURFACE WATERS  

EPA Science Inventory

We compared the use of ternary and bivariate diagrams to distinguish the effects of atmospheric precipitation, rock weathering, and evaporation on inland surface and subsurface water chemistry. The three processes could not be statistically differentiated using bivariate models e...

425

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

426

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

427

Signal Processing and Neural Network Simulator  

NASA Astrophysics Data System (ADS)

The signal processing and neural network simulator (SPANNS) is a digital signal processing simulator with the capability to invoke neural networks into signal processing chains. This is a generic tool which will greatly facilitate the design and simulation of systems with embedded neural networks. The SPANNS is based on the Signal Processing WorkSystemTM (SPWTM), a commercial-off-the-shelf signal processing simulator. SPW provides a block diagram approach to constructing signal processing simulations. Neural network paradigms implemented in the SPANNS include Backpropagation, Kohonen Feature Map, Outstar, Fully Recurrent, Adaptive Resonance Theory 1, 2, & 3, and Brain State in a Box. The SPANNS was developed by integrating SAIC's Industrial Strength Neural Networks (ISNN) Software into SPW.

Tebbe, Dennis L.; Billhartz, Thomas J.; Doner, John R.; Kraft, Timothy T.

1995-04-01

428

Caenorhabditis elegans Cyclin B3 Is Required for Multiple Mitotic Processes Including Alleviation of a Spindle Checkpoint-Dependent Block in Anaphase Chromosome Segregation  

PubMed Central

The master regulators of the cell cycle are cyclin-dependent kinases (Cdks), which influence the function of a myriad of proteins via phosphorylation. Mitotic Cdk1 is activated by A-type, as well as B1- and B2-type, cyclins. However, the role of a third, conserved cyclin B family member, cyclin B3, is less well defined. Here, we show that Caenorhabditis elegans CYB-3 has essential and distinct functions from cyclin B1 and B2 in the early embryo. CYB-3 is required for the timely execution of a number of cell cycle events including completion of the MII meiotic division of the oocyte nucleus, pronuclear migration, centrosome maturation, mitotic chromosome condensation and congression, and, most strikingly, progression through the metaphase-to-anaphase transition. Our experiments reveal that the extended metaphase delay in CYB-3–depleted embryos is dependent on an intact spindle assembly checkpoint (SAC) and results in salient defects in the architecture of holocentric metaphase chromosomes. Furthermore, genetically increasing or decreasing dynein activity results in the respective suppression or enhancement of CYB-3–dependent defects in cell cycle progression. Altogether, these data reveal that CYB-3 plays a unique, essential role in the cell cycle including promoting mitotic dynein functionality and alleviation of a SAC–dependent block in anaphase chromosome segregation.

Deyter, Gary M. R.; Furuta, Tokiko; Kurasawa, Yasuhiro; Schumacher, Jill M.

2010-01-01

429

Thermally actuated wedge block  

Microsoft Academic Search

This invention relates to an automatically-operating wedge block for maintaining intimate structural contact over wide temperature ranges, including cryogenic use. The wedging action depends on the relative thermal expansion of two materials having very different coefficients of thermal expansion. The wedge block expands in thickness when cooled to cryogenic temperatures and contracts in thickness when returned to room temperature. 4

Queen; C. C. Jr

1980-01-01

430

Thermally actuated wedge block  

DOEpatents

This invention relates to an automatically-operating wedge block for maintaining intimate structural contact over wide temperature ranges, including cryogenic use. The wedging action depends on the relative thermal expansion of two materials having very different coefficients of thermal expansion. The wedge block expands in thickness when cooled to cryogenic temperatures and contracts in thickness when returned to room temperature.

Queen, Jr., Charles C. (Knoxville, TN)

1980-01-01

431

Block copolymer investigations  

Microsoft Academic Search

The research presented in this thesis deals with various aspects of block copolymers on the nanoscale: their behavior at a range of temperatures, their use as scaffolds, or for creation of chemically striped surfaces, as well as the behavior of metals on block copolymers under the influence of UV light, and the healing behavior of copolymers. Invented around the time

Nataliya A. Yufa

2008-01-01

432

Gyro Sensor Block Suspension.  

National Technical Information Service (NTIS)

Provides a suspension mount for a gyro sensor block suspension eliminates dither cross-talk in a gyro triad having a set of common gyros with the same dither tuned suspension. A sensor block has three gyro mount locations situated such that, when attached...

A. Cangialosi

1983-01-01

433

Empirical likelihood block bootstrapping  

Microsoft Academic Search

Monte Carlo evidence has made it clear that asymptotic tests based on generalized method of moments (GMM) estimation have disappointing size. The problem is exacerbated when the moment conditions are serially correlated. Several block bootstrap techniques have been proposed to correct the problem, including Hall and Horowitz (1996) and Inoue and Shintani (2006). We propose an empirical likelihood block bootstrap

Jason Allen; Allan W. Gregory; Katsumi Shimotsu

2011-01-01

434

Effect of Polymer Blocking Layer and Processing Method on the Breakdown Strength and the Extractable Energy Density of Barium Titanate/poly(vinylidene fluoride-co-hexafluoropropylene) Nanocomposite Thin Film Capacitors  

NASA Astrophysics Data System (ADS)

Polymer-metal oxide nanocomposites are of great interest because of their high energy density and easy processability, which make them candidate materials for energy storage applications. Although loading of high-k filler in polymer matrix is desirable to maximize energy density of nanocomposites, the decrease of breakdown strength at higher loading compromises a potential gain in energy density. In this work, we investigate the effect of a fluoropolymer (CYTOP) blocking layer in BaTiO3/poly(vinylidene fluoride-co-hexafluoro propylene) nanocomposite films on the improvement of breakdown strength and energy storage density. The introduction of blocking layer may serve to prevent moisture absorption and charge injection from electrode, thereby decreasing the probability of catastrophic breakdown events. We also examine the influence of processing method, i.e. spin- or blade-casting, on the performance of bilayer films. The charge-discharge method shows about a twofold increase in extractable energy density (from 2 to 3.7 J/cm^3) of bilayer films fabricated by blade-casting compared to single layer film by spin-casting because of improved breakdown strength. The results will be discussed in regards to morphology, electric field distribution, and loss of bilayer films.

Kim, Yunsang; Kathaperumal, Mohanalingam; Smith, O'neil; Pan, Ming-Jen; Perry, Joseph

2013-03-01

435

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

436

The spatial anisotropy of flares relative to sunspot groups and vector butterfly diagrams in solar activity cycles nos. 17-19 and 23  

Microsoft Academic Search

Data on the location of flares covering solar cycles Nos. 17–19 were used to construct vector R(?,t) diagrams for the mean position of the flares in the coordinate system of the sunspot's group centre. The R(?,t) diagram reveals a global anisotropy of the flare process relative to the midline of the diagram. The R?-shift is always directed towards the central

V. V. Kasinsky

2001-01-01

437

The Spatial Anisotropy of Flares with Respect to Sunspot Groups and Vector Butterfly Diagrams in Solar Activity Cycles 17-20  

Microsoft Academic Search

Data on the location of flares covering solar cycles 17-20 were used to construct vector R(, t) diagrams for the mean position of the flare scattering centre in the coordinate system of the sunspot centre. The R(, t)-diagram reveals a spatial anisotropy of the flare process relative to the midline of the - t-diagram. The R-component is always directed towards

V. V. Kasinsky

1999-01-01

438

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

439

Pions in the quark matter phase diagram  

SciTech Connect

The relationship between mesonic correlations and quantum condensates in the quark matter phase diagram is explored within a quantum field theoretical approach of the Nambu and Jona-Lasinio (NJL) type. Mean-field values in the scalar meson and diquark channels are order parameters signaling the occurrence of quark condensates, entailing chiral symmetry breaking ({chi}SB) and color superconductivity (2SC) in quark matter. We investigate the spectral properties of scalar and pseudoscalar meson excitations in the phase diagram in Gaussian approximation and show that outside the {chi}SB region where the pion is a zero-width bound state, there are two regions where it can be considered as a quasi-bound state with a lifetime exceeding that of a typical heavy-ion collision fireball: (A) the high-temperature {chi}SB crossover region at low densities and (B) the high-density color superconducting phase at temperatures below 100 MeV.

Zablocki, D. [Instytut Fizyki Teoretycznej, Uniwersytet Wroclawski, 50-204 Wroclaw (Poland); Institut fuer Physik, Universitaet Rostock, D-18051 Rostock (Germany); Blaschke, D. [Instytut Fizyki Teoretycznej, Uniwersytet Wroclawski, 50-204 Wroclaw (Poland); Bogoliubov Laboratory for Theoretical Physics, JINR, 141980 Dubna (Russian Federation); Anglani, R. [Dipartimento di Fisica, Universita di Bari, I-70126 Bari (Italy); I.N.F.N., Sezione di Bari, I-70126 Bari (Italy)

2008-08-29

440

Modeling the Round Earth through Diagrams  

NASA Astrophysics Data System (ADS)

Earlier studies have found that students, including adults, have problems understanding the scientifically accepted model of the Sun-Earth-Moon system and explaining day-to-day astronomical phenomena based on it. We have been examining such problems in the context of recent research on visual-spatial reasoning. Working with middle school students in India, we have developed a pedagogical sequence to build the mental model of the Earth and tried it in three schools for socially and educationally disadvantaged students. This pedagogy was developed on the basis of (1) a reading of current research in imagery and visual-spatial reasoning and (2) students' difficulties identified during the course of pretests and interviews. Visual-spatial tools such as concrete (physical) models, gestures, and diagrams are used extensively in the teaching sequence. The building of a mental model is continually integrated with drawing inferences to understand and explain everyday phenomena. The focus of this article is inferences drawn with diagrams.

Padalkar, Shamin; Ramadas, Jayashree

441

Invited Commentary: Causal diagrams and measurement bias.  

PubMed

Causal inferences about the effect of an exposure on an outcome may be biased by errors in the measurement of either the exposure or the outcome. Measurement errors of exposure and outcome can be classified into 4 types: independent nondifferential, dependent nondifferential, independent differential, and dependent differential. Here the authors describe how causal diagrams can be used to represent these 4 types of measurement bias and discuss some problems that arise when using measured exposure variables (e.g., body mass index) to make inferences about the causal effects of unmeasured constructs (e.g., "adiposity"). The authors conclude that causal diagrams need to be used to represent biases arising not only from confounding and selection but also from measurement. PMID:19755635

Hernán, Miguel A; Cole, Stephen R

2009-09-15

442

Krajewski diagrams and the standard model  

SciTech Connect

This paper provides a complete list of Krajewski diagrams representing the standard model of particle physics. We will give the possible representations of the algebra and the anomaly free lifts which provide the representation of the standard model gauge group on the fermionic Hilbert space. The algebra representations following from the Krajewski diagrams are not complete in the sense that the corresponding spectral triples do not necessarily obey to the axiom of Poincare duality. This defect may be repaired by adding new particles to the model, i.e., by building models beyond the standard model. The aim of this list of finite spectral triples (up to Poincare duality) is therefore to provide a basis for model building beyond the standard model.

Stephan, Christoph A. [Institut fuer Mathematik, Universitaet Potsdam, Am Neuen Palais 10, 14469 Potsdam (Germany)

2009-04-15

443

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

NSDL National Science Digital Library

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

2010-07-01

444

Translating Data Flow Diagrams into Z (and Vice Versa).  

National Technical Information Service (NTIS)

The results of work into the integration of structured and formal methods, in particular, data flow diagrams and Z, are described. Data flow diagrams are given a formal, mathematical basis by defining rules to translate these diagrams into Z. Rules are al...

G. P. Randell

1990-01-01

445

Translating Data Flow Diagrams into Z (and Vice Versa).  

National Technical Information Service (NTIS)

This report describes the results of work into the integration of structured and formal methods, in particular, data flow diagrams and Z. Data flow diagrams are given a formal, mathematical basis by defining rules to translate these diagrams into Z. Rules...

G. P. Randell

1990-01-01

446

Compilation of Flow Diagrams into Target Code for Embedded Systems  

Microsoft Academic Search

In this paper we describe a part of our work on the automatic generation of target code from Stateflow models. We focus on the flow diagrams from the Stateflow component of MATLAB and describe how flow diagram models can be compiled into target code for embedded systems. Moreover, the paper describes a method for analyzing flow diagrams, allowing an efficient

Achim Rettberg; Edwin Erpenbach; Jürgen Tacken; Carsten Rust; Bernd Kleinjohann

447

Triangular Diagrams Teach Steady and Dynamic Behaviour of Catalytic Reactions.  

ERIC Educational Resources Information Center

|Illustrates how triangular diagrams can aid in presenting some of the rather complex transient interactions that occur among gas and surface species during heterogeneous catalytic reactions. The basic equations and numerical examples are described. Classroom use of the triangular diagram is discussed. Several diagrams and graphs are provided.…

Klusacek, K.; And Others

1989-01-01

448

The Problem of Labels in E-Assessment of Diagrams  

ERIC Educational Resources Information Center

|In this article we explore a problematic aspect of automated assessment of diagrams. Diagrams have partial and sometimes inconsistent semantics. Typically much of the meaning of a diagram resides in the labels; however, the choice of labeling is largely unrestricted. This means a correct solution may utilize differing yet semantically equivalent…

Jayal, Ambikesh; Shepperd, Martin

2009-01-01

449

Ride diagram: a tool for analysis of vehicle suspension settings  

Microsoft Academic Search

This paper proposes a new evaluation method for ride comfort, the ride diagram. The ride diagram is plotted from vehicle accelerations resulting from increased levels of excitation. The idea is to graphically visualize how the ride comfort changes with, for example, road unevenness or speed. The paper further focuses on investigating how fundamental suspension parameters affect the ride diagram shape.

K. Strandemar; B. Thorvald

2006-01-01

450

Generalization of an Interpolant Using Voronoi Diagrams in Two Directions  

Microsoft Academic Search

Recently the authors found a local coordinate property based on the planar Voronoi diagram that is simpler than the famous Sibson's local coordinates (R. Sibson, 1980; 1981), and proposed an interpolant using this property. The paper generalizes this property to general dimensions. The proof given in the paper enables us to use more general Voronoi diagrams, e.g., Laguerre Voronoi diagrams

Hisamoto Hiyoshi; Kokichi Sugihara

1999-01-01

451

A flow phase diagram for helium superfluids  

Microsoft Academic Search

The existence of the flow phase diagram predicted by Volovik [JETP Lett. 78, 553 (2003)] is discussed based on the available experimental data for He II and 3He-B. The effective temperature-dependent but scale-independent Reynolds number Reeff?1\\/q?(1???)\\/?, where ? and ?? are the mutual friction parameters, and the superfluid Reynolds number characterizing the circulation\\u000a of the superfluid component in units of

L. Skrbek

2004-01-01

452

Characteristic Dynkin diagrams and W algebras  

NASA Astrophysics Data System (ADS)

We present a classification of characteristic Dynkin diagrams for the AN, BN, CN and DN algebras. This classification is related to the classification of W(G, K) algebras arising from non-abelian Toda models, and we argue that it can give new insight on the structure of W algebras. On leave from absence of Laboratoire de Physique Théorique ENSLAPP, Chemin de Bellevue BP 110, F-74941 Annecy-le-Vieux Cedex, France.

Ragoucy, E.

1993-11-01

453

Space-efficient approximate Voronoi diagrams  

Microsoft Academic Search

(MATH) Given a set $S$ of $n$ points in $\\\\IR^d$, a {\\\\em $(t,\\\\epsilon)$-approximate Voronoi diagram (AVD)} is a partition of space into constant complexity cells, where each cell $c$ is associated with $t$ representative points of $S$, such that for any point in $c$, one of the associated representatives approximates the nearest neighbor to within a factor of $(1+\\\\epsilon)$. Like

Sunil Arya; Theocharis Malamatos; David M. Mount

2002-01-01

454

Magnetic phase diagram of bcc 3He  

Microsoft Academic Search

A complete magnetic phase diagram of bcc solid 3He at a molar volume of 22.7 cm3\\/mol has been determined by pressure measurements at temperatures down to 250 muK in magnetic fields up to 7 T. The transition temperature between the paramagnetic phase and the high-field antiferromagnetic ordered phase increases with field and reaches a maximum (=0.96 mK) at 3 T.

Hiroshi Fukuyama; T. Fukuda; T. Okamoto; H. Akimoto; H. Ishimoto; S. Ogawa

1991-01-01

455

On forming limit stress diagram analysis  

Microsoft Academic Search

Forming Limit Stress Diagrams (FLSDs) have been intensively studied and have been considered as being path-independent. This paper carries out a detailed study to examine the path-dependency of FLSDs based on different non-proportional loading histories, which are combinations of two linear strain paths. All simulations are based on crystal plasticity theory in conjunction with the M–K approach. It is confirmed

P. D. Wu; A. Graf; S. R. MacEwen; D. J. Lloyd; M. Jain; K. W. Neale

2005-01-01

456

Calculation of the forming limit diagram  

Microsoft Academic Search

A mathematical model is presented to help understand sheet metal deformation during forming. The particular purpose of this\\u000a model is to predict the forming limit diagram (FLD). The present model is an extension of a previous analysis by Jones and\\u000a Gillis (JG)[1] in which the deformation is idealized into three phases: (I) homogeneous deformation up to maximum load; (II) deformation

Wonjib Choi; Peter P. Gillis; S. E. Jones

1989-01-01

457

Using Diagrams and Models: 2.75  

NSDL National Science Digital Library

This article discusses the importance of abstraction and generalization in being able to use models and diagrams effectively, whether children are creating their own models to represent a situation and explain their thinking, or interpreting a provided model. The resource offers examples to illustrate these ideas as well as teaching strategies and activities in the areas of parity, mental addition, equivalent fractions, and multi-digit multiplication.

2012-09-26

458

Sloan Digital Sky Survey: The Hubble Diagram  

NSDL National Science Digital Library

This section of the Sloan Digital Sky Survey's website provides an excellent explanation of how Astronomers are able to use red-shift to explain the expansion of the universe. An activity is provided for a user to retrace Edwin Hubble's steps of measuring magnitudes and calculating redshifts to make a Hubble Diagram. These pages are part of a large set of projects and activities provided by the Sloan Digital Sky Survey for advanced astronomy students.

2005-05-15

459

Phase diagram of dispersion of anisotropic particles  

Microsoft Academic Search

We discuss the phase diagram of aqueous dispersions of colloidal plate-like charged particles (300 Å × 10 Å). Particle concentration\\u000a and ionic strength are the two parameters controlling the system. At fixed ionic strength, the suspensions undergo a sol\\/gel\\u000a transition without macroscopic phase separation. Shear rheology is used to monitor this transition and to locate the appearance\\u000a of the “mechanical

A. Mourchid; A. Delville; P. Levitz

460

Causal diagrams, gastroesophageal reflux and erosive oesophagitis.  

PubMed

Gastroesophageal reflux and its consequences have inspired numerous research questions in recent years: are non-erosive reflux disease (NERD) and erosive oesophagitis phenotypic expressions of gastroesophageal reflux disease? Why do patients with NERD not respond to treatment as well as patients with erosive oesophagitis? What is the natural history of NERD? Causal diagrams, coupled with conditional probabilities, offer clear and surprising answers. PMID:22804828

Shahar, Eyal

2012-07-16

461

Phase Diagram of Strongly Interacting Theories  

NASA Astrophysics Data System (ADS)

We summarize the phase diagrams of SU, SO and Sp gauge theories as function of the number of flavors, colors, and matter representation as well as the ones of phenomenologically relevant chiral gauge theories such as the Bars-Yankielowicz and the generalized Georgi-Glashow models. We finally report on the intriguing possibility of the existence of gauge-duals for nonsupersymmetric gauge theories and the impact on their conformal window.

Sannino, Francesco

462

Phase Diagram of Strongly Interacting Theories  

NASA Astrophysics Data System (ADS)

We summarize the phase diagrams of SU, SO and Sp gauge theories as function of the number of flavors, colors, and matter representation as well as the ones of phenomenologically relevant chiral gauge theories such as the Bars-Yankielowicz and the generalized Georgi-Glashow models. We finally report on the intriguing possibility of the existence of gauge-duals for nonsupersymmetric gauge theories and the impact on their conformal window.

Sannino, Francesco

2011-01-01

463

The plutonium-oxygen phase diagram  

SciTech Connect

Identification of products formed by the reaction of plutonium metal with liquid water at 23{degree}C indicates that the plutonium-oxygen phase diagram is similar to the cerium-oxygen and praseodymium-oxygen diagrams. Quantitative measurements of H{sub 2} formation and analytical data suggest that a sequence of hydrolysis reactions produces oxide hydrides of trivalent plutonium, Pu{sub 2}O{sub 3}, mixed-valent oxides and PuO{sub 2}. The intermediate oxides are the n {equals} 7, 9, 10 and 12 members of the Pu{sub n}O{sub 2n{minus}2} homologous series. Properties of the residue formed by thermal decomposition of the initial hydrolysis product, plutonium monoxide monhydride (PuOH), are consistent with the formation of metastable plutonium monoxide. Crystal-chemical, thermodynamic, and kinetic factors are evaluated, but definitive assignment of the equilibrium Pu-O diagram is not possible. 22 refs., 6 figs., 1 tab.

Haschke, J.M.

1990-01-01

464

Diffraction Between Wax Blocks  

NSDL National Science Digital Library

In this optics activity, learners explore diffraction by adding wax blocks to a ripple tank. The wedge-shaped blocks act as obstacles that the wave must bend around. Learners will observe this phenomenon as well as the semicircular waves that emerge from the narrow opening between the blocks. Learners experiment by changing the size of the opening and seeing what effect it has on the emerging waves. This activity is recommended as a follow-up to "The Ripple Tank" activity and can be supplemented by the "Interference in a Ripple Tank" activity (see related resources).

Cobb, Vicki; Cobb, Josh

2008-01-01

465

The Atom - The Final Link in the Division Process or the First Building Block? Pre-Instructional Conceptions about the Structure of Substances.  

ERIC Educational Resources Information Center

The hypothesis as to the atomic structure of any given substance is introduced in many physics and chemistry textbooks by conveying the idea of repetitive division of a given amount of substance, for example, by grinding, dissolving, or evaporating. The rationale for this approach is the assumption of students inferring that this process of…

Pfundt, Helga

466

The Atom - The Final Link in the Division Process or the First Building Block? Pre-Instructional Conceptions about the Structure of Substances.  

ERIC Educational Resources Information Center

|The hypothesis as to the atomic structure of any given substance is introduced in many physics and chemistry textbooks by conveying the idea of repetitive division of a given amount of substance, for example, by grinding, dissolving, or evaporating. The rationale for this approach is the assumption of students inferring that this process of…

Pfundt, Helga

467

Domain-specific languages and diagram customization for a concurrent engineering environment  

NASA Astrophysics Data System (ADS)

A major open question for advocates of Model-Based Systems Engineering (MBSE) is the question of how system and subsystem engineers will work together. The Systems Modeling Language (SysML), like any language intended for a large audience, is in tension between the desires for simplicity and for expressiveness. In order to be more expressive, many specialized language elements may be introduced, which will unfortunately make a complete understanding of the language a more daunting task. While this may be acceptable for systems modelers, it will increase the challenge of including subsystem engineers in the modeling effort. One possible answer to this situation is the use of Domain-Specific Languages (DSL), which are fully supported by the Unified Modeling Language (UML). SysML is in fact a DSL for systems engineering. The expressive power of a DSL can be enhanced through the use of diagram customization. Various domains have already developed their own schematic vocabularies. Within the space engineering community, two excellent examples are the propulsion and telecommunication subsystems. A return to simple box-and-line diagrams (e.g., the SysML Internal Block Diagram) are in many ways a step backward. In order allow subsystem engineers to contribute directly to the model, it is necessary to make a system modeling tool at least approximate in accessibility to drawing tools like Microsoft PowerPoint and Visio. The challenge is made more extreme in a concurrent engineering environment, where designs must often be drafted in an hour or two. In the case of the Jet Propulsion Laboratory's Team X concurrent design team, a subsystem is specified using a combination of PowerPoint for drawing and Excel for calculation. A pilot has been undertaken in order to meld the drawing portion and the production of master equipment lists (MELs) via a SysML authoring tool, MagicDraw. Team X currently interacts with its customers in a process of sharing presentations. There are severa- inefficiencies that arise from this situation. The first is that a customer team must wait two weeks to a month (which is 2-4 times the duration of most Team X studies themselves) for a finalized, detailed design description. Another is that this information must be re-entered by hand into the set of engineering artifacts and design tools that the mission concept team uses after a study is complete. Further, there is no persistent connection to Team X or institutionally shared formulation design tools and data after a given study, again reducing the direct reuse of designs created in a Team X study. This paper presents the underpinnings of subsystem DSLs as they were developed for this pilot. This includes specialized semantics for different domains as well as the process by which major categories of objects were derived in support of defining the DSLs. The feedback given to us by the domain experts on usability, along with a pilot study with the partial inclusion of these tools is also discussed.

Cole, B.; Dubos, G.; Banazadeh, P.; Reh, J.; Case, K.; Wang, Y.; Jones, S.; Picha, F.

468

Experimental and Theoretical Investigation of Forming Limit Diagram (FLD) and Forming Limit Stress Diagram (FLSD) For Aluminum Alloy 3105  

Microsoft Academic Search

In this paper experimental and theoretical FLD and FLSD of AA3105 are investigated. For this purpose, the forming limit diagram of Aluminum alloy 3105 using out-of-plane test is evaluated experimentally. Also, base of emphasis of forming limit stress diagrams and using plasticity equations, the stress limits resulted from strain limits and then forming limit stress diagram obtained. Some of the

Mehdi. Safari; S. J. Hoseinipour; H. D. Azodi; Sh. Yousefzadeh

2011-01-01

469

Blocked tear duct  

MedlinePLUS

... is blocked, the tears will build up and overflow onto the cheek, even when you are not ... The symptom is increased tearing , which overflows onto the face or ... during the first 2 - 3 weeks after birth. Sometimes, the tears ...

470

Evolutionary phase diagrams for plasma-enhanced chemical vapor deposition of silicon thin films from hydrogen-diluted silane  

SciTech Connect

Real-time optical studies have been applied to develop phase diagrams that characterize plasma-enhanced chemical vapor deposition (PECVD) of silicon thin films at low temperature (200&hthinsp;{degree}C). The deposition phase diagrams describe regimes over which predominantly amorphous and microcrystalline Si phases are obtained as a function of the accumulated thickness and the hydrogen-to-silane gas flow ratio R=[H{sub 2}]/[SiH{sub 4}] in the PECVD process. The diagrams for different substrates provide insights into optimization of amorphous Si materials and solar cells. {copyright} {ital 1999 American Institute of Physics.}

Koh, J.; Ferlauto, A.S.; Rovira, P.I.; Wronski, C.R.; Collins, R.W. [Center for Thin Film Devices and Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802 (United States)

1999-10-01

471

Engine cylinder block reinforcing structure  

Microsoft Academic Search

An engine cylinder block structure is described comprising: a cylinder block integrally formed to include skirts projecting downwardly from both sides of a lower surface of the cylinder block; an oil pan attached to lower surfaces of both skirts of the cylinder block for receiving engine oil used inside the cylinder block, the oil pan having a deep first portion

F. Ishimura; H. Kagaya; K. Nishimura; T. Teramoto

1988-01-01

472

31 CFR 551.301 - Blocked account; blocked property.  

Code of Federal Regulations, 2010 CFR

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY SOMALIA SANCTIONS REGULATIONS General Definitions § 551.301 Blocked account; blocked property. The terms blocked...

2010-07-01

473

31 CFR 551.301 - Blocked account; blocked property.  

Code of Federal Regulations, 2013 CFR

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY SOMALIA SANCTIONS REGULATIONS General Definitions § 551.301 Blocked account; blocked property. The terms blocked...

2013-07-01

474

31 CFR 541.301 - Blocked account; blocked property.  

Code of Federal Regulations, 2013 CFR

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY ZIMBABWE SANCTIONS REGULATIONS General Definitions § 541.301 Blocked account; blocked property. The terms blocked...

2013-07-01

475

31 CFR 546.302 - Blocked account; blocked property.  

Code of Federal Regulations, 2013 CFR

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DARFUR SANCTIONS REGULATIONS General Definitions § 546.302 Blocked account; blocked property. The terms blocked...

2013-07-01

476

Dynamics of Block Copolymers  

Microsoft Academic Search

\\u000a Block copolymers are a scientifically fascinating and technologically promising class of macromolecular surfactants. Thermodynamic\\u000a interactions between the normally immiscible blocks induce microphase separation into a variety of ordered phases (lamellae,\\u000a hexagonal cylinders, cubic arrays of spheres, etc.), depending on temperature and composition. The resulting materials thus\\u000a combine properties of both components, with predictable microstructures on the 10–100 nm lengthscale. In

Tim Lodge

477

A Traceable Block Cipher  

Microsoft Academic Search

In this paper1 we propose a new symmetric block cipher with the following paradoxical traceability properties: it is computationally easy to derive many equivalent secret keys providing distinct descrip- tions of the same instance of the block cipher. But it is computationally di-cult, given one or even up to k equivalent keys, to recover the so called meta-key from which

Olivier Billet; Henri Gilbert

2003-01-01

478

Related Drupal Nodes Block  

Microsoft Academic Search

Related Drupal Nodes Block\\u000aThis module exposes a block that uses Latent Semantic Analysis (Lsa) internally to suggest three nodes that are relevant to the node a user is viewing. This module performs three tasks.\\u000a1) It periodically indexes a Drupal site and generates a Lsa Term Document Matrix. Indexing is performaned each Cron job and uses the text found

Wim Van der Vegt

2010-01-01

479

Block Krylov Subspace Methods for Large Algebraic Riccati Equations  

Microsoft Academic Search

In the present paper, we present numerical methods for the computation of approximate solutions to large continuous-time and discrete-time algebraic Riccati equations. The proposed methods are projection methods onto block Krylov subspaces. We use the block Arnoldi process to construct an orthonormal basis of the corresponding block Krylov subspace and then extract low rank approximate solutions. We consider the sequential

K. Jbilou; Batiment H. Poincaré; F. Buisson

2003-01-01

480

[Obturator nerve block].  

PubMed

Obturator nerve block is commonly used for transurethral resections of the bladder in order to inhibit reflectory adductor muscle reaction during electrocoagulation and to reduce the risk of bladder wall perforation during transurethral surgery. Furthermore, obturator block is used to complete regional blocks for major knee surgery in addition to femoral and sciatic nerve blocks. Continuous techniques are sometimes used to treat chronic pain problems such as adductor spasm. During a so called "3 in 1" block (femoral nerve block) the obturator nerve will only be anaesthetized in 0-62% of the patients. Therefore, a specific approach to the obturator nerve is deemed appropriate. In addition, an accessory branch of the obturator nerve will accompany the femoral nerve in 10-30% of the patients. The classical approach uses the tuberculum pubicum as an anatomical landmark, inserting the needle approximately 1.5cm lateral and caudal until bone contact is established. After laterocaudal redirection the canalis obturatorius is reached and the local anaesthetic is injected. The alternative approach is more often used: At the proximal tendon insertion of the adductor longus muscle the needle is introduced and advanced towards the anterior superior iliac spine. For both approaches a nerve stimulator is used and 15-20ml of local anaesthetic solution are injected. PMID:20455186

Freisburger, Christian; Nachtigall, Bernd; Wulf, Hinnerk

2010-05-07

481

Cellular FLICE-inhibitory Protein (cFLIP) Isoforms Block CD95- and TRAIL Death Receptor-induced Gene Induction Irrespective of Processing of Caspase-8 or cFLIP in the Death-inducing Signaling Complex*  

PubMed Central

Death receptors (DRs) induce apoptosis but also stimulate proinflammatory “non-apoptotic” signaling (e.g. NF-?B and mitogen-activated protein kinase (MAPK) activation) and inhibit distinct steps of DR-activated maturation of procaspase-8. To examine whether isoforms of cellular FLIP (cFLIP) or its cleavage products differentially regulate DR signaling, we established HaCaT cells expressing cFLIPS, cFLIPL, or mutants of cFLIPL (cFLIPD376N and cFLIPp43). cFLIP variants blocked TRAIL- and CD95L-induced apoptosis, but the cleavage pattern of caspase-8 in the death inducing signaling complex was different: cFLIPL induced processing of caspase-8 to the p43/41 fragments irrespective of cFLIP cleavage. cFLIPS or cFLIPp43 blocked procaspase-8 cleavage. Analyzing non-apoptotic signaling pathways, we found that TRAIL and CD95L activate JNK and p38 within 15 min. cFLIP variants and different caspase inhibitors blocked late death ligand-induced JNK or p38 MAPK activation suggesting that these responses are secondary to cell death. cFLIP isoforms/mutants also blocked death ligand-mediated gene induction of CXCL-8 (IL-8). Knockdown of caspase-8 fully suppressed apoptotic and non-apoptotic signaling. Knockdown of cFLIP isoforms in primary human keratinocytes enhanced CD95L- and TRAIL-induced NF-?B activation, and JNK and p38 activation, underscoring the regulatory role of cFLIP for these DR-mediated signals. Whereas the presence of caspase-8 is critical for apoptotic and non-apoptotic signaling, cFLIP isoforms are potent inhibitors of TRAIL- and CD95L-induced apoptosis, NF-?B activation, and the late JNK and p38 MAPK activation. cFLIP-mediated inhibition of CD95 and TRAIL DR could be of crucial importance during keratinocyte skin carcinogenesis and for the activation of innate and/or adaptive immune responses triggered by DR activation in the skin.

Kavuri, Shyam M.; Geserick, Peter; Berg, Daniela; Dimitrova, Diana Panayotova; Feoktistova, Maria; Siegmund, Daniela; Gollnick, Harald; Neumann, Manfred; Wajant, Harald; Leverkus, Martin

2011-01-01

482

Measurement and analysis of SHCCT diagram for CLAM steel  

NASA Astrophysics Data System (ADS)

China Low Activation Martensitic (CLAM) steel is a leading candidate material for construction of the Chinese fusion reactor Test Blanket Module. The Simulated HAZ Continuous Cooling Transformation (SHCCT) diagram is developed via physical simulation, and the effects of thermal history on the microstructure and mechanical properties of the weld coarse-grain heat-affected zone (CGHAZ) in CLAM steel are evaluated. The results of thermal cycle simulation show that grain size increases and hardness decreases gradually with increasing heat input. Under certain conditions, especially when cooling times from 800 °C to 500 °C (T8/5) are larger than 136 s, delta ferrite may form which is deleterious for the TBM application. The amounts of delta ferrite are given under different T8/5. A SHCCT diagram of CLAM steel is developed using dilatometry and it predicts the AC1, AC3 and the Ms temperatures. With decreased cooling rate (larger T8/5), martensite laths widen and carbide precipitates grow. The results indicate that welding heat input should be taken into consideration and controlled in practical CLAM steel welding process applications.

Huang, Yuming; Chen, Xizhang; Shen, Zheng; Madigan, Bruce; Yucheng, Lei; Zhou, Jianzhong

2013-01-01

483

Growing Up with Their Blocks.  

ERIC Educational Resources Information Center

|Describes one teacher's use of traditional wooden blocks in fifth-grade curriculum. Notes that use of blocks can teach communication, teamwork, precision, and arithmetic concepts. Also describes four easy classroom block projects. (TM)|

Winarski, Diana L.

1995-01-01

484

Solid-liquid phase diagrams of binary aromatic hydrocarbon mixtures from calorimetric studies  

SciTech Connect

The authors describe solid-liquid phase diagrams of binary mixtures of aromatic hydrocarbons obtained from calorimetric studies. The sample of the binary solid mixture is heated at a constant rate until the solid is completely melted. During that process, the heat flux needed is monitored. By examination of the curves of the heat flux versus temperature, the solid-liquid phase diagrams can be constructed. Three binary systems (fluorene-dibenzofuran, dibenzothiophene-dibenzofuran, fluorene-dibenzothiophene) have been studied. It turns out that the fluorene-dibenzofuran system forms a solid solution at any composition, while dibenzothiphene-dibenzofuran and fluorene-dibenzothiophene systems have immiscibility gaps in the solid phases.

Sediawan, W.B.; Gupta, S.; McLaughlin, E. (Louisiana State Univ., Baton Rouge, LA (USA). Dept. of Chemical Engineering)

1989-04-01

485

Evidence for penguin-diagram decays: First observation of B>K*(892)gamma  

Microsoft Academic Search

We have observed the decays B0-->K*(892)0gamma and B--->K*(892)-gamma, which are evidence for the quark-level process b-->sgamma. The average branching fraction is (4.5+\\/-1.5+\\/-0.9)×10-5. This value is consistent with standard model predictions from electromagnetic penguin diagrams.

R. Ammar; S. Ball; P. Baringer; D. Coppage; N. Copty; R. Davis; N. Hancock; M. Kelly; N. Kwak; H. Lam; Y. Kubota; M. Lattery; J. K. Nelson; S. Patton; D. Perticone; R. Poling; V. Savinov; S. Schrenk; R. Wang; M. S. Alam; I. J. Kim; B. Nemati; J. J. O'neill; H. Severini; C. R. Sun; M. M. Zoeller; G. Crawford; M. Daubenmeir; R. Fulton; D. Fujino; K. K. Gan; K. Honscheid; H. Kagan; R. Kass; J. Lee; R. Malchow; F. Morrow; Y. Skovpen; M. Sung; C. White; J. Whitmore; P. Wilson; F. Butler; X. Fu; G. Kalbfleisch; M. Lambrecht; W. R. Ross; P. Skubic; J. Snow; P. L. Wang; M. Wood; D. Bortoletto; D. N. Brown; J. Fast; R. L. McIlwain; T. Miao; D. H. Miller; M. Modesitt; S. F. Schaffner; E. I. Shibata; I. P. Shipsey; P. N. Wang; M. Battle; J. Ernst; H. Kroha; S. Roberts; K. Sparks; E. H. Thorndike; C. H. Wang; J. Dominick; S. Sanghera; T. Skwarnicki; R. Stroynowski; M. Artuso; D. He; M. Goldberg; N. Horwitz; R. Kennett; G. C. Moneti; F. Muheim; Y. Mukhin; S. Playfer; Y. Rozen; S. Stone; M. Thulasidas; G. Vasseur; G. Zhu; J. Bartelt; S. E. Csorna; Z. Egyed; V. Jain; P. Sheldon; D. S. Akerib; B. Barish; M. Chadha; S. Chan; D. F. Cowen; G. Eigen; J. S. Miller; C. O'grady; J. Urheim; A. J. Weinstein; D. Acosta; M. Athanas; G. Masek; B. Ong; H. Paar; M. Sivertz; A. Bean; J. Gronberg; R. Kutschke; S. Menary; R. J. Morrison; S. Nakanishi; H. N. Nelson; T. K. Nelson; J. D. Richman; A. Ryd; H. Tajima; D. Schmidt; D. Sperka; M. S. Witherell; M. Procario; S. Yang; R. Balest; K. Cho; M. Daoudi; W. T. Ford; D. R. Johnson; K. Lingel; M. Lohner; P. Rankin; J. G. Smith; J. P. Alexander; C. Bebek; K. Berkelman; D. Besson; T. E. Browder; D. G. Cassel; H. A. Cho; D. M. Coffman; P. S. Drell; R. Ehrlich; M. Garcia-Sciveres; B. Geiser; B. Gittelman; S. W. Gray; D. L. Hartill; B. K. Heltsley; C. D. Jones; S. L. Jones; J. Kandaswamy; N. Katayama; P. C. Kim; D. L. Kreinick; G. S. Ludwig; J. Masui; J. Mevissen; N. B. Mistry; C. R. Ng; E. Nordberg; M. Ogg; J. R. Patterson; D. Peterson; D. Riley; S. Salman; M. Sapper; H. Worden; F. Würthwein; P. Avery; A. Freyberger; J. Rodriguez; R. Stephens; J. Yelton; D. Cinabro; S. Henderson; K. Kinoshita; T. Liu; M. Saulnier; F. Shen; R. Wilson; H. Yamamoto; M. Selen; A. J. Sadoff

1993-01-01

486

An Evaluation of Substrates for Tactile Maps and Diagrams: Scanning Speed and Users' Preferences  

ERIC Educational Resources Information Center

This study evaluated the relative suitability of a range of base materials for producing tactile maps and diagrams via a new ink-jet process. The visually impaired and sighted participants tactilely scanned arrays of symbols that were printed on seven substrate materials, including paper, plastic, and aluminum. In general, the rougher substrates…

Jehoel, Sandra; Ungar, Simon; McCallum, Don; Rowell, Jonathan

2005-01-01

487

AZTECA, a y-y diagram oriented interactive computer program for optical system design and optimization  

NASA Astrophysics Data System (ADS)

The Centro de Investigaciones en Optica is developing the AZTECA optical design program to exploit the full synthesis capabilities intrinsic to Delano's y-y method. Both the y- y diagram and its dual the (omega) -(omega) diagram, are manipulated in real time to introduce changes at any point or line in those diagrams. These changes result in altered new versions of the optical system by means of a specialized subroutine that incorporates the fundamental synthesis equations for those diagrams. To display results on the computer's screen as the optimization process progress, AZTECA makes wide use of the fact that the y-y and the (omega) -(omega) diagrams display graphically all the first order attributes of an optical system. This program adjoins to these features the calculation of Buchdahl's 3rd, 5th, and 7th order aberration coefficients to the output. This results in a real time display of the system's paraxial and aberrational behavior. Efficient graphic displays, the program's modular structure and an interactive mode of operation, also contribute to make the AZTECA a versatile platform. It will be further developed as a new tool for efficient optical system design.

Flores-Hernandez, Ricardo

1995-09-01

488

State-transition diagrams for biologists.  

PubMed

It is clearly in the tradition of biologists to conceptualize the dynamical evolution of biological systems in terms of state-transitions of biological objects. This paper is mainly concerned with (but obviously not limited too) the immunological branch of biology and shows how the adoption of UML (Unified Modeling Language) state-transition diagrams can ease the modeling, the understanding, the coding, the manipulation or the documentation of population-based immune software model generally defined as a set of ordinary differential equations (ODE), describing the evolution in time of populations of various biological objects. Moreover, that same UML adoption naturally entails a far from negligible representational economy since one graphical item of the diagram might have to be repeated in various places of the mathematical model. First, the main graphical elements of the UML state-transition diagram and how they can be mapped onto a corresponding ODE mathematical model are presented. Then, two already published immune models of thymocyte behavior and time evolution in the thymus, the first one originally conceived as an ODE population-based model whereas the second one as an agent-based one, are refactored and expressed in a state-transition form so as to make them much easier to understand and their respective code easier to access, to modify and run. As an illustrative proof, for any immunologist, it should be possible to understand faithfully enough what the two software models are supposed to reproduce and how they execute with no need to plunge into the Java or Fortran lines. PMID:22844438

Bersini, Hugues; Klatzmann, David; Six, Adrien; Thomas-Vaslin, Véronique

2012-07-23

489

State-Transition Diagrams for Biologists  

PubMed Central

It is clearly in the tradition of biologists to conceptualize the dynamical evolution of biological systems in terms of state-transitions of biological objects. This paper is mainly concerned with (but obviously not limited too) the immunological branch of biology and shows how the adoption of UML (Unified Modeling Language) state-transition diagrams can ease the modeling, the understanding, the coding, the manipulation or the documentation of population-based immune software model generally defined as a set of ordinary differential equations (ODE), describing the evolution in time of populations of various biological objects. Moreover, that same UML adoption naturally entails a far from negligible representational economy since one graphical item of the diagram might have to be repeated in various places of the mathematical model. First, the main graphical elements of the UML state-transition diagram and how they can be mapped onto a corresponding ODE mathematical model are presented. Then, two already published immune models of thymocyte behavior and time evolution in the thymus, the first one originally conceived as an ODE population-based model whereas the second one as an agent-based one, are refactored and expressed in a state-transition form so as to make them much easier to understand and their respective code easier to access, to modify and run. As an illustrative proof, for any immunologist, it should be possible to understand faithfully enough what the two software models are supposed to reproduce and how they execute with no need to plunge into the Java or Fortran lines.

Bersini, Hugues; Klatzmann, David; Six, Adrien; Thomas-Vaslin, Veronique

2012-01-01

490

Developing grain boundary diagrams as a materials science tool: A case study of nickel-doped molybdenum  

SciTech Connect

Impurity-based, premelting-like, grain boundary (GB) ''phases'' (complexions) can form in alloys and influence sintering, creep, and microstructural development. Calculation of Phase Diagrams (CalPhaD) methods and Miedema-type statistical interfacial thermodynamic models are combined to forecast the formation and stability of subsolidus quasiliquid GB phases in binary alloys. This work supports a long-range scientific goal of developing ''GB (phase) diagrams'' as a new materials science tool to help controlling the materials fabrication processing and resultant materials properties. Using nickel-doped molybdenum as a model system, a type of GB diagram (called ''{lambda} diagram'') is computed to represent the temperature- and composition-dependent thermodynamic tendency for general GBs to disorder. Subsequently, controlled sintering experiments are conducted to estimate the GB diffusivity as a function of temperature and overall composition, and the experimental results correlate well with the computed GB diagram. Although they are not yet rigorous GB-phase diagrams with well-defined transition lines, the predictability and usefulness of such {lambda} diagrams are demonstrated. Related interfacial thermodynamic models and computational approaches are discussed.

Shi Xiaomeng; Luo Jian [School of Materials Science and Engineering, Center for Optical Materials Science and Engineering Technologies, Clemson University, Clemson, South Carolina 29634 (United States)

2011-07-01

491

Developing grain boundary diagrams as a materials science tool: A case study of nickel-doped molybdenum  

NASA Astrophysics Data System (ADS)

Impurity-based, premelting-like, grain boundary (GB) “phases” (complexions) can form in alloys and influence sintering, creep, and microstructural development. Calculation of Phase Diagrams (CalPhaD) methods and Miedema-type statistical interfacial thermodynamic models are combined to forecast the formation and stability of subsolidus quasiliquid GB phases in binary alloys. This work supports a long-range scientific goal of developing “GB (phase) diagrams” as a new materials science tool to help controlling the materials fabrication processing and resultant materials properties. Using nickel-doped molybdenum as a model system, a type of GB diagram (called “? diagram”) is computed to represent the temperature- and composition-dependent thermodynamic tendency for general GBs to disorder. Subsequently, controlled sintering experiments are conducted to estimate the GB diffusivity as a function of temperature and overall composition, and the experimental results correlate well with the computed GB diagram. Although they are not yet rigorous GB-phase diagrams with well-defined transition lines, the predictability and usefulness of such ? diagrams are demonstrated. Related interfacial thermodynamic models and computational approaches are discussed.

Shi, Xiaomeng; Luo, Jian

2011-07-01

492

Building Blocks for Embedded Control Systems  

Microsoft Academic Search

Developing embedded control systems using a building-block approach at all the parts enables an effi- cient and fast design process. Main reasons are the real plug-and-play capabilities of the blocks. Furthermore, due the simulatability of the designs, parts of the system can al- ready be tested before the other parts are available. We have applied an object-oriented approach for modeling

Jan F. Broenink; Gerald Hilderink; André W. P. Bakkers

2000-01-01

493

What We Can Learn from a Diagram: The Case of Aristarchus's On The Sizes and Distances of the Sun and Moon  

Microsoft Academic Search

By using the example of a single proposition and its diagrams, this paper makes explicit a number of the processes in effect in the textual transmission of works in the exact sciences of the ancient and medieval periods. By examining the diagrams of proposition 13 as they appear in the Greek, Arabic, and Latin traditions of Aristarchus's On the Sizes

Nathan Sidoli

2007-01-01

494

Block copolymer nanocontainers.  

PubMed

Using cell dynamics computer simulation, we perform a systematic study of thin block copolymer films around a nanoparticle. Lamellar-, cylinder-, and sphere-forming block copolymers are investigated with respect to different film thicknesses, particle radii, and boundary conditions at the film interfaces. The obtained structures include standing lamellae and cylinders, "onions", cylinder "knitting balls", "golf ball", layered spherical, "virus"-like and mixed morphologies with T-junctions and U-type defects. The kinetics of the structure formation and difference with planar thin films are discussed. Our simulations suggest that novel porous nanocontainers can be formed by the coating of a sacrificial nanobead by a block copolymer layer with a well-controlled nanostructure. In addition, first scanning force microscopy experiments on a model system reveal surface structures similar to those predicted by our simulations. PMID:20496954

Pinna, Marco; Hiltl, Stephanie; Guo, Xiaohu; Böker, Alexander; Zvelindovsky, Andrei V

2010-05-25

495

Large block experiments operational plan  

SciTech Connect

The large block experiments were originally conceived of as a series of burn cavity growth tests in large, isolated blocks of coal that could be opened up for inspection after each burn was completed. The concept has been modified to be more economical by using an exposed coal face in a mine rather than separate blocks. The general, over-all goal is to observe the behavior of the Big Dirty coal under a variety of gasification conditions. The specific goals for this plan are: (1) to determine the burn cavity shape and degree of rubble fill for a coal consumption of approximately 25 m/sup 3/; (2) to determine the gas composition and particulate production as a function of operating conditions during the burn; (3) to observe the extent of slag formation from parting zones and coal ash and determine any interactions with the burn process; (4) to determine any significant differences in cavity growth or process behavior due to changes in oxygen/steam ratio; (5) to compare cavity growth and gas composition for an air burn and an oxygen/steam burn; and (6) to investigate the interaction of the roof material with the burn process and to do a preliminary test of the CRIP system. The sit for the experiments is located in the Bucoda Field of the WIDCO mine near Centralia, Washington. The Lawrence Livermore National Laboratory in cooperation with the Washington Irrigation and Development Company (WIDCO) will perform gasification tests in drilled channels using oxygen/steam and air injection at this site. Detailed experimental plans are described in this report.

Hill, R.W.; Thompson, D.S.; Thorsness, C.B.

1981-10-16

496

Representing Dynamic Spatial Processes Using Voronoi Diagrams: Recent Developements  

Microsoft Academic Search

Geographic space is typically conceptualized either as discrete objects or as continuous fields. Considerable efforts have been carried out for the representation and management of the spatial data, based on the object view of the space. However field-based data models are less developed in GIS especially when it comes to the modeling and representation of dynamic fields. Dynamic phenomena such

Mir Abolfazl Mostafavi; Leila Hashemi Beni; Karine Hins-Mallet

2009-01-01

497

The Diagram as Story: Unfolding the Event-Structure of the Mathematical Diagram  

ERIC Educational Resources Information Center

|This paper explores the role of narrative in decoding diagrams. I focus on two fundamental facets of narrative: (1) the recounting of causally related sequences of events, and (2) the positioning of the narrator through point-of-view and voice. In the first two sections of the paper I discuss philosophical and semiotic frameworks for making sense…

de Freitas, Elizabeth

2012-01-01

498

Phase diagram of quantum square ice  

NASA Astrophysics Data System (ADS)

We have investigated the ground-state and finite-temperature phase diagram of quantum square ice - realized by the transverse-field Ising model on a checkerboard lattice - using both linear spin-wave (LSW) theory and quantum Monte Carlo (QMC). We generalize the model with different couplings between nearest (J1) and next-to-nearest (J2) neighbors on the checkerboard lattice. Our QMC approach generalizes the loop algorithm - very efficient in the study of constrained classical systems - to a ``brane algorithm'' for quantum systems. At the LSW level the vast degeneracy of the ground-state for J1=J2 and J2>J1 remains intact; moreover LSW theory breaks down in extended regions of the phase diagram, pointing at non-classical states [1]. Our QMC study goes beyond perturbative schemes and addresses directly the nature of the low-temperature phases. We have critically examined the possibility of a resonating-plaquette state for J1=J2, suggested by degenerate perturbation theory on the ice-rule manifold for weak fields. Our QMC results for finite fields confirm the absence of Néel or collinear order, but they do not confirm the presence of resonating-plaquette order, pointing at a possibly more complex non-classical state.[4pt] [1] L.-P. Henry et al., PRB 85, 134427 (2012).

Henry, Louis-Paul; Holdsworth, Peter; Mila, Frederic; Roscilde, Tommaso

2013-03-01

499

Compare and contrast the reaction coordinate diagrams for chemical reactions and cytoskeletal force generators.  

PubMed

Reaction coordinate diagrams are used to relate the free energy changes that occur during the progress of chemical processes to the rate and equilibrium constants of the process. Here I briefly review the application of these diagrams to the thermodynamics and kinetics of the generation of force and motion by cytoskeletal motors and polymer ratchets as they mediate intracellular transport, organelle dynamics, cell locomotion, and cell division. To provide a familiar biochemical context for discussing these subcellular force generators, I first review the application of reaction coordinate diagrams to the mechanisms of simple chemical and enzyme-catalyzed reactions. My description of reaction coordinate diagrams of motors and polymer ratchets is simplified relative to the rigorous biophysical treatment found in many of the references that I use and cite, but I hope that the essay provides a valuable qualitative representation of the physical chemical parameters that underlie the generation of force and motility at molecular scales. In any case, I have found that this approach represents a useful interdisciplinary framework for understanding, researching, and teaching the basic molecular mechanisms by which motors contribute to fundamental cell biological processes. PMID:23408787

Scholey, Jonathan M

2013-02-01

500

Compare and contrast the reaction coordinate diagrams for chemical reactions and cytoskeletal force generators  

PubMed Central

Reaction coordinate diagrams are used to relate the free energy changes that occur during the progress of chemical processes to the rate and equilibrium constants of the process. Here I briefly review the application of these diagrams to the thermodynamics and kinetics of the generation of force and motion by cytoskeletal motors and polymer ratchets as they mediate intracellular transport, organelle dynamics, cell locomotion, and cell division. To provide a familiar biochemical context for discussing these subcellular force generators, I first review the application of reaction coordinate diagrams to the mechanisms of simple chemical and enzyme-catalyzed reactions. My description of reaction coordinate diagrams of motors and polymer ratchets is simplified relative to the rigorous biophysical treatment found in many of the references that I use and cite, but I hope that the essay provides a valuable qualitative representation of the physical chemical parameters that underlie the generation of force and motility at molecular scales. In any case, I have found that this approach represents a useful interdisciplinary framework for understanding, researching, and teaching the basic molecular mechanisms by which motors contribute to fundamental cell biological processes.

Scholey, Jonathan M.

2013-01-01