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1

Design and control of hierarchically structured nanomaterials  

E-Print Network [OSTI]

synthesis, many other metals have been attempted including barium, cesium, lithium, and many others along with looking at other synthesis parameters like starting reagents, compositions, and reaction conditions [31-42]. The structure of LTL contains... mesoporous structure. The zeolitic material, silicalite-1, is used as a siliceous precursor for the formation of the mesoporous SBA-15 material. A battery of characterization techniques were used to identify the structural properties of the material...

Carr, Charles Shane

2005-11-01T23:59:59.000Z

2

Hierarchically Structured Materials for Lithium Batteries  

SciTech Connect (OSTI)

Lithium-ion battery (LIB) is one of the most promising power sources to be deployed in electric vehicles (EV), including solely battery powered vehicles, plug-in hybrid electric vehicles, and hybrid electrical vehicles. With the increasing demand on devices of high energy densities (>500 Wh/kg) , new energy storage systems, such as lithium-oxygen (Li-O2) batteries and other emerging systems beyond the conventional LIB also attracted worldwide interest for both transportation and grid energy storage applications in recent years. It is well known that the electrochemical performances of these energy storage systems depend not only on the composition of the materials, but also on the structure of electrode materials used in the batteries. Although the desired performances characteristics of batteries often have conflict requirements on the micro/nano-structure of electrodes, hierarchically designed electrodes can be tailored to satisfy these conflict requirements. This work will review hierarchically structured materials that have been successfully used in LIB and Li-O2 batteries. Our goal is to elucidate 1) how to realize the full potential of energy materials through the manipulation of morphologies, and 2) how the hierarchical structure benefits the charge transport, promotes the interfacial properties, prolongs the electrode stability and battery lifetime.

Xiao, Jie; Zheng, Jianming; Li, Xiaolin; Shao, Yuyan; Zhang, Jiguang

2013-09-25T23:59:59.000Z

3

Timpf, S. and A. U. Frank (1997). Using hierarchical spatial data structures for hierarchical spatial reasoning. Spatial Information  

E-Print Network [OSTI]

Timpf, S. and A. U. Frank (1997). Using hierarchical spatial data structures for hierarchical Science 1329: 69-83. Using Hierarchical Spatial Data Structures for Hierarchical Spatial Reasoning Sabine structures to improve efficiency in computing the correct result. An algorithm on hierarchical spatial data

Timpf, Sabine

4

Hierarchical Network Structure Promotes Dynamical Robustness  

E-Print Network [OSTI]

The analysis of dynamical systems that attempts to model chemical reaction, gene-regulatory, population, and ecosystem networks all rely on models having interacting components. When the details of these interactions are unknown for biological systems of interest, one effective approach is to study the dynamical properties of an ensemble of models determined by evolutionary constraints that may apply to all such systems. One such constraint is that of dynamical robustness. Despite previous investigations, the relationship between dynamical robustness-an important functional characteristic of many biological systems-and network structure is poorly understood. Here we analyze the stability and robustness of a large class of dynamical systems and demonstrate that the most hierarchical network structures, those equivalent to the total ordering, are the most robust. In particular, we determine the probability distribution of robustness over system connectivity and show that robustness is maximized by maximizing the number of links between strongly connected components of the graph representing the underlying system connectivity. We demonstrate that this can be understood in terms of the fact that permutation of strongly connected components is a fundamental symmetry of dynamical robustness, which applies to networks of any number of components and is independent of the distribution from which the strengths of interconnection among components are sampled. The classification of dynamical robustness based upon a purely topological property provides a fundamental organizing principle that can be used in the context of experimental validation to select among models that break or preserve network hierarchy. This result contributes to an explanation for the observation of hierarchical modularity in biological networks at all scales.

Cameron Smith; Raymond S. Puzio; Aviv Bergman

2014-12-01T23:59:59.000Z

5

INTERACTIVE COMPUTER GRAPHICS DISPLAYS FOR HIERARCHICAL DATA STRUCTURES  

E-Print Network [OSTI]

INTERACTIVE COMPUTER GRAPHICS DISPLAYS FOR HIERARCHICAL DATAINTERACTIVE COMPUTER GRAPHICS DISPLAYS FOR HIERARCHICAL DATAtem. INTERACTIVE COMPUTER GRAPHICS DISPLAYS FOR HIERARCHICAL

Cahn, D.F.

2010-01-01T23:59:59.000Z

6

Phase-space structures II: Hierarchical Structure Finder  

E-Print Network [OSTI]

A new multi-dimensional Hierarchical Structure Finder (HSF) to study the phase-space structure of dark matter in N-body cosmological simulations is presented. The algorithm depends mainly on two parameters, which control the level of connectivity of the detected structures and their significance compared to Poisson noise. By working in 6D phase-space, where contrasts are much more pronounced than in 3D position space, our HSF algorithm is capable of detecting subhaloes including their tidal tails, and can recognise other phase-space structures such as pure streams and candidate caustics. If an additional unbinding criterion is added, the algorithm can be used as a self-consistent halo and subhalo finder. As a test, we apply it to a large halo of the Millennium Simulation, where 19 % of the halo mass are found to belong to bound substructures, which is more than what is detected with conventional 3D substructure finders, and an additional 23-36 % of the total mass belongs to unbound HSF structures. The distribution of identified phase-space density peaks is clearly bimodal: high peaks are dominated by the bound structures and low peaks belong mostly to tidal streams. In order to better understand what HSF provides, we examine the time evolution of structures, based on the merger tree history. Bound structures typically make only up to 6 orbits inside the main halo. Still, HSF can identify at the present time at least 80 % of the original content of structures with a redshift of infall as high as z space.

M. Maciejewski; S. Colombi; V. Springel; C. Alard; F. R. Bouchet

2008-12-01T23:59:59.000Z

7

Hierarchically structured photoelectrodes for dye-sensitized solar cells  

E-Print Network [OSTI]

Hierarchically structured photoelectrodes for dye-sensitized solar cells Qifeng Zhang and Guozhong or one-dimensional assemblies. Introduction Dye-sensitized solar cells (DSCs) are a category Cao* DOI: 10.1039/c0jm04345a This paper highlights several significant achievements in dye-sensitized

Cao, Guozhong

8

Tubular structured hierarchical mesoporous titania material derived from natural cellulosic substances and application as photocatalyst for degradation of methylene blue  

SciTech Connect (OSTI)

Graphical abstract: Bio-inspired, tubular structured hierarchical mesoporous titania material with high photocatalytic activity under UV light was fabricated employing natural cellulosic substance (cotton) as hard template and cetyltrimethylammonium bromide (CTAB) surfactant as soft template using a one-pot sol-gel method. Highlights: {yields} Tubular structured mesoporous titania material was fabricated by sol-gel method. {yields} The titania material faithfully recorded the hierarchical structure of the template substrate (cotton). {yields} The titania material exhibited high photocatalytic activity in decomposition of methylene blue. -- Abstract: Bio-inspired, tubular structured hierarchical mesoporous titania material was designed and fabricated employing natural cellulosic substance (cotton) as hard template and cetyltrimethylammonium bromide (CTAB) surfactant as soft template by one-pot sol-gel method. The tubular structured hierarchical mesoporous titania material processes large specific surface area (40.23 m{sup 2}/g) and shows high photocatalytic activity in the photodegradation of methylene blue under UV light irradiation.

Huang, Haiqing [Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense, East China Institute of Technology, Fuzhou, Jiangxi 344000 (China)] [Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense, East China Institute of Technology, Fuzhou, Jiangxi 344000 (China); Liu, Xiaoyan [Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027 (China)] [Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027 (China); Huang, Jianguo, E-mail: jghuang@zju.edu.cn [Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027 (China)] [Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027 (China)

2011-11-15T23:59:59.000Z

9

DNA Transport in Hierarchically-Structured  

E-Print Network [OSTI]

porous metallic tubes.3 The fabrication of spherical, cylindri- cal, and hollow colloidal crystals using-dimensional periodic structures with micrometer-scale periods have been fabricated with nano- particle inks.8 Well definition, is a promising approach for the fabrication of complex micro- and nano- structures.15

New Mexico, University of

10

Automatic Layout of Structured Hierarchical Reports  

E-Print Network [OSTI]

Domain-specific database applications tend to contain a sizable number of table-, form-, and report-style views that must each be designed and maintained by a software developer. A significant part of this job is the ...

Bakke, Eirik

11

Analysis of stability of community structure across multiple hierarchical levels  

E-Print Network [OSTI]

The analysis of stability of community structure is an important problem for scientists from many fields. Here, we propose a new framework to reveal hidden properties of community structure by quantitatively analyzing the dynamics of Potts model. Specifically we model the Potts procedure of community structure detection by a Markov process, which has a clear mathematical explanation. Critical topological information regarding to multivariate spin configuration could also be inferred from the spectral significance of the Markov process. We test our framework on some example networks and find it doesn't have resolute limitation problem at all. Results have shown the model we proposed is able to uncover hierarchical structure in different scales effectively and efficiently.

Li, Hui-Jia

2015-01-01T23:59:59.000Z

12

Hierarchically Structured ZnO Nanorods-Nanosheets for Improved Quantum-Dot-Sensitized Solar Cells  

E-Print Network [OSTI]

). This hierarchical structure had two advantages in improving the power conversion efficiency (PCE) of the solar cells. INTRODUCTION The establishment of low-cost and high-performance solar cells for sustainable energy sourcesHierarchically Structured ZnO Nanorods-Nanosheets for Improved Quantum-Dot-Sensitized Solar Cells

Cao, Guozhong

13

A Design Path for Hierarchical Self-Assembly of Patchy Colloids  

E-Print Network [OSTI]

Patchy colloids are promising candidates for building blocks in directed self-assembly. To be successful the surface patterns need to both be simple enough to be synthesized, while feature-rich enough to cause the colloids to self-assemble into desired structures. Achieving this is a challenge for traditional synthesis methods. Recently it has been suggested that the surface pattern themselves can be made to self-assemble. In this paper we show that a wide range of functional structures can be made to self-assemble using this approach. More generally we present a design path for hierarchical targeted self-assembly of patchy colloids. At the level of the surface structure, we use a predictive method utilizing universality of patterns of stripes and spots, coupled with stoichiometric constraints, to cause highly specific and functional patterns to self-assemble on spherical surfaces. We use a minimalistic model of an alkanethiol on gold as a model system and demonstrate that, even with limited control over the interaction between surface constituents, we can obtain patterns that causes the colloids themselves to self-assemble into various complex geometric structures. We demonstrate how variations of the same design path cause in-silico self-assembly of strings, membranes, cubic and spherical aggregates, as well as various crystalline patterns.

Erik Edlund; Oskar Lindgren; Martin Nilsson Jacobi

2014-05-12T23:59:59.000Z

14

A hierarchical structure of neural network implemented for the recognition of automobile license plate number  

E-Print Network [OSTI]

A HIERARCHICAL STRUCTURE OF NEURAL NETWORK IMPLEMENTED FOR THE RECOGNITION OF AUTOMOBILE LICENSE PLATE NURSER A Thesis by JOONGHO CHANG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfdlment... of the requirements for the degree of MASTER OF SCIENCE August 1994 Major Subject: Electrical Engineering A HIERARCHICAL STRUCTURE OF NEURAL NETWORK IMPLEMENTED FOR THE RECOGNITION OF AUTOMOBILE LICENSE PLATE NUMBER A Thesis by JOONGHO CHANG Submitted...

Chang, Joongho

1994-01-01T23:59:59.000Z

15

Design and Integration of Partial Brain Models Using Hierarchical Cooperative CoEvolution  

E-Print Network [OSTI]

Design and Integration of Partial Brain Models Using Hierarchical Cooperative CoEvolution Michail and integrating brain-inspired artificial cognitive sys- tems. Specifically, we introduce a new computational framework for modelling partial brain areas following a coevolutionary agent-based approach. Properly for

Trahanias, Panos

16

Evaluation of Design Choices for Gang Scheduling using Distributed Hierarchical Control  

E-Print Network [OSTI]

Evaluation of Design Choices for Gang Scheduling using Distributed Hierarchical Control Dror G to control the adverse e ect of badly-matched gangs. Consequently the on-line mapping and scheduling, Israel Abstract Gang scheduling | the scheduling of a number of related threads to execute simultaneously

Feitelson, Dror

17

Model-Based Hierarchical Optimal Control Design for HVAC Systems  

E-Print Network [OSTI]

trol algorithm design for hvac systems in energy efficientH.R. Sualem. Building and HVAC System simulation with theOPTIMAL CONTROL DESIGN FOR HVAC SYSTEMS Mehdi Maasoumy,

Maasoumy, Mehdi; Pinto, Alessandro; Sangiovanni-Vincentelli, Alberto

2014-01-01T23:59:59.000Z

18

Hierarchical Modeling for Population-Based Heat Exchanger Design  

E-Print Network [OSTI]

Characteristics of the Stirling Engine Regenerator in anapproach to the design of Stirling engine regenerator matrixFoil Regenerator for Stirling Engines." [48] Ibrahim, M. ,

Geb, David

2013-01-01T23:59:59.000Z

19

Focusing Search in Hierarchical Structures with Directory Sets  

E-Print Network [OSTI]

Keyword-based searches on the World Wide Web are often of limited use, because they return too many uninteresting matches. We propose here a novel mechanism that permits the user to specify directory sets to restrict the space of documents searched, and, at the same time, increase the speed of the search. We view the Web as a single, huge hierarchy, reflected in the structure of the URLs. We refer to each subtree in this hierarchy as a directory, and group semantically related documents from multiple directories into a directory set. Starting from a collection of pre-defined directory sets, a user can dynamically generate new directory sets by using operators in a directory set algebra, and focus keywordbased searches to documents that belong to a (pre-defined or dynamically generated) directory set. We design algorithms for efficiently evaluating expressions in the directory set algebra, and describe a technique for tightly integrating directory sets into keyword-based search engines....

Guy Jacobson; Balachander Krishnamurthy; Divesh Srivastava; Dan Suciu

1998-01-01T23:59:59.000Z

20

Hierarchical Structural Approach to Improving the Browsability of Web Search Engine Results  

E-Print Network [OSTI]

Hierarchical Structural Approach to Improving the Browsability of Web Search Engine Results Hang,zaiane}@cs.ualberta.ca Abstract Web users have been mainly relying on Web search engines to find information of interest on the Web. However, two key issues remain with traditional Web search engines: the browsability of searching

Zaiane, Osmar R.

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


21

Nanorodnanosheet hierarchically structured ZnO crystals on zinc foil as flexible photoanodes for  

E-Print Network [OSTI]

for dye-sensitized solar cells Rui Gao,ab Jianjun Tian,a Zhiqiang Liang,a Qifeng Zhang,a Liduo Wang method on zinc foil and used as flexible photoanodes in dye-sensitized solar cells (DSCs). Compared of the NR­NS hierarchical structures are discussed. 1 Introduction Dye-sensitized solar cells (DSCs

Cao, Guozhong

22

on the complexity of some hierarchical structured matrix algorithms  

E-Print Network [OSTI]

tions of integral equations, PDEs, structured matrix (such as Toeplitz) .... Here, we provide a graph technique where an HSS tree is converted into a ...... implementation is in MATLAB and the flop counts, timing, and accuracies are shown.

2012-05-17T23:59:59.000Z

23

The hierarchical structure and mechanics of plant materials  

E-Print Network [OSTI]

The cell walls in plants are made up of just four basic building blocks: cellulose (the main structural fibre of the plant kingdom) hemicellulose, lignin and pectin. Although the microstructure of plant cell walls varies ...

Gibson, Lorna

24

Breakdown Anodization (BDA) for hierarchical structures of titanium oxide  

E-Print Network [OSTI]

Breakdown Anodization (BDA) of titanium dioxide is a very promising, fast fabrication method to construct micro-scale and nano-scale structures on titanium surfaces. This method uses environmentally friendly electrolytes, ...

Choi, Soon Ju, S.M. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

25

The gravitational heat conduction and the hierarchical structure in solar interior  

E-Print Network [OSTI]

With the assumption of local Tsallis equilibrium, the newly defined gravitational temperature is calculated in the solar interior, whose distribution curve can be divided into three parts, the solar core region, radiation region and convection region, in excellent agreement with the solar hierarchical structure. By generalizing the Fourier law, one new mechanism of heat conduction, based on the gradient of the gravitational temperature, is introduced into the astrophysical system. This mechanism is related to the self-gravity of such self-gravitating system whose characteristic scale is large enough. It perhaps plays an important role in the astrophysical system which, in the solar interior, leads to the heat accumulation at the bottom of the convection layer and then motivates the convection motion.

Zheng Yahui; Du Jiulin

2014-03-10T23:59:59.000Z

26

Dye-Sensitized Solar Cells Based on Hierarchically Structured John Beach, Washington University in St. Louis, 2012 SURF Fellow  

E-Print Network [OSTI]

Dye-Sensitized Solar Cells Based on Hierarchically Structured John Beach, Washington University to increase the efficiency of these solar cells. One of the barriers that needs to be overcome to make dye-sensitized in St. Louis, 2012 SURF Fellow Advisor: Prof. Zhiqun Lin; Mentor: Dr. Xukai Xin Introduction Dye-sensitized

Li, Mo

27

DOI: 10.1002/adma.200602927 Hierarchically Structured ZnO Film for Dye-Sensitized Solar Cells  

E-Print Network [OSTI]

DOI: 10.1002/adma.200602927 Hierarchically Structured ZnO Film for Dye-Sensitized Solar Cells* The interest in dye-sensitized solar cells has increased due to reduced energy sources and higher energy, zinc oxide (ZnO) has recently been explored as an alternative material in dye-sensitized solar cells

Cao, Guozhong

28

Hierarchically structured TIO2 nanorod spheres for clean water and energy production.  

E-Print Network [OSTI]

??This study focuses on the synthesis of hierarchical TiO2 nanorod spheres for photocatalytic clean water and energy production. TiO2 nanorod spheres were firstly synthesized by… (more)

Bai, Hongwei

2014-01-01T23:59:59.000Z

29

Low-Energy Parking Structure Design (Brochure)  

SciTech Connect (OSTI)

This guide provides design teams with best practices for parking structure energy efficiency in the form of goals for each design aspect that affects energy use.

Not Available

2013-01-01T23:59:59.000Z

30

Biomineralized structural materials with functional optical properties  

E-Print Network [OSTI]

Many biological structural materials exhibit "mechanical property amplification" through their intricate hierarchical composite designs. In the past several decades, significant progress has been achieved in elucidating ...

Li, Ling, Ph. D. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

31

A novel 3D structure composed of strings of hierarchical TiO{sub 2} spheres formed on TiO{sub 2} nanobelts with high photocatalytic properties  

SciTech Connect (OSTI)

A novel hierarchical titanium dioxide (TiO{sub 2}) composite nanostructure with strings of anatase TiO{sub 2} hierarchical micro-spheres and rutile nanobelts framework (TiO{sub 2} HSN) is successfully synthesized via a one-step hydrothermal method. Particularly, the strings of hierarchical spheres are assembled by very thin TiO{sub 2} nanosheets, which are composed of highly crystallized anatase nanocrystals. Meanwhile, the HSN has a large surface area of 191 m{sup 2}/g, which is about 3 times larger than Degussa P25. More importantly, the photocatalytic activity of HSN and P25 were evaluated by the photocatalytic oxidation decomposition of methyl orange (MO) under UV light illumination, and the TiO{sub 2} HSN shows enhanced photocatalytic activity compared with Degussa P25, as result of its continuous hierarchical structures, special conductive channel and large specific surface area. With these features, the hierarchical TiO{sub 2} may have more potential applications in the fields of dye-sensitized solar cells and lithium ion batteries. -- Graphical abstract: Novel TiO{sub 2} with anatase micro-spheres and rutile nanobelts is synthesized. Enhanced photocatalysis is attributed to hierarchical structures (3D spheres), conductive channel (1D nanobelts) and large specific surface area (2D nanosheet). Highlights: • The novel TiO{sub 2} nanostructure (HSN) is fabricated for the first time. • HSN is composed of strings of anatase hierarchical spheres and rutile nanobelt. • HSN presents a larger S{sub BET} of 191 m{sup 2}/g, 3 times larger than the Degussa P25 (59 m{sup 2}/g). • HSN owns three kinds of dimensional TiO{sub 2} (1D, 2D and 3D) simultaneously. • HSN exhibits better photocatalytic performance compared with Degussa P25.

Jiang, Yongjian [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China); Li, Meicheng, E-mail: mcli@ncepu.edu.cn [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China); Suzhou Institute, North China Electric Power University, Suzhou 215123 (China); Song, Dandan; Li, Xiaodan; Yu, Yue [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China)

2014-03-15T23:59:59.000Z

32

Outsourcing the Design of Structural Building Components  

E-Print Network [OSTI]

component design work stateside. vi 1 Introduction The outsourcing of structural building component design has recently become available to component manufacturers in the United States. These manufacturers of metal plate connected (MPC) wood roof... of the effectiveness of outsourcing as a means of fulfilling the design requirements of MPC wood trusses. Although 1 this report does not evaluate other structural building components (i.e., i- joists, engineered wood beams and wall panels), the analysis provided...

Swearingin, Adam V.

2008-05-16T23:59:59.000Z

33

Microparticles with hierarchical porosity  

DOE Patents [OSTI]

The present disclosure provides oxide microparticles with engineered hierarchical porosity and methods of manufacturing the same. Also described are structures that are formed by templating, impregnating, and/or precipitating the oxide microparticles and method for forming the same. Suitable applications include catalysts, electrocatalysts, electrocatalysts support materials, capacitors, drug delivery systems, sensors and chromatography.

Petsev, Dimiter N; Atanassov, Plamen; Pylypenko, Svitlana; Carroll, Nick; Olson, Tim

2012-12-18T23:59:59.000Z

34

Evidence for Hydro-Gravitational Structure Formation Theory versus Cold-Dark-Matter, Hierarchical-Clustering, and Jeans 1902  

E-Print Network [OSTI]

Observations are compared to conflicting predictions about self-gravitational structure formation by the hydro-gravitational theory (HGT) of Gibson 1996-2003 versus cold-dark-matter hierarchical-clustering-cosmology (CDMHCC) and the Jeans 1902 criterion. According to HGT, gravitational structures form immediately after mass-energy equality by plasma fragmentation at 30,000 years when viscous and weak turbulence forces first balance gravitational forces within the horizon L_H = ct < L_J = c/[3\\rho G]^1/2, contrary to the Jeans 1902 criterion. Buoyancy forces fossilize the 10^-12 s^-1 rate-of-strain and the 10^-17 kg m^-3 baryonic density. The non-baryonic dark matter (NBDM) diffuses into the voids rather than forming cold-dark-matter (CDM) halos required by CDMHCC. From HGT, supercluster-mass to galaxy-mass fragments exist at the plasma to gas transition, and these fragment further to form proto-globular-star clusters (PGCs) and planetary-mass primordial-fog-particles (PFPs): the baryonic dark matter of the interstellar-medium and inner-galaxy-dark-matter-halos, from which all planets and stars are formed by accretion (Gibson 1996, Schild 1996). From HGT and a rich cluster mass profile (Tyson and Fischer 1995), D_NBDM = 6 x10^28 m^2 s^-1, m_NBDM <= 10^-33 kg, and the NBDM forms outer-galaxy halos after 300,000 years.

Carl H. Gibson; Rudy Schild

2003-07-01T23:59:59.000Z

36

Development of structural design criteria for ITER.  

SciTech Connect (OSTI)

The irradiation environment experienced by the in-vessel components of fusion reactors such as HER presents structural design challenges not envisioned in the development of existing structural design criteria such as the ASME Code or RCC-MR. From the standpoint of design criteria, the most significant issues stem from the irradiation-induced changes in material properties, specifically the reduction of ductility, strain hardening capability, and fracture toughness with neutron irradiation. Recently, Draft 7 of the interim ITER structural design criteria (ISDC), which provide new rules for guarding against such problems, was released for trial use by the ITER designers. The new rules, which were derived from a simple model based on the concept of elastic follow up factor, provide primary and secondary stress limits as functions of uniform elongation and ductility. The implication of these rules on the allowable surface heat flux on typical first walls made of type 316 stainless steel and vanadium alloys are discussed.

Majumdar, S.

1998-06-22T23:59:59.000Z

37

Five hierarchical levels of sequence-structure correlation in Christopher Bystroff, Yu Shao and Xin Yuan  

E-Print Network [OSTI]

in the database of known proteins tell the story of the folding pathway and of its evolutionary history model measures the degree of a specific type of sequence-structure correlation in the database of known structures. From the perspective of statistical thermodynamics, a database correlation implies

Bystroff, Chris

38

Robust carbon monolith having hierarchical porosity  

DOE Patents [OSTI]

A carbon monolith includes a robust carbon monolith characterized by a skeleton size of at least 100 nm, and a hierarchical pore structure having macropores and mesopores.

Dai, Sheng; Guiohon, Georges A; Liang, Chengdu

2013-02-05T23:59:59.000Z

39

Robust carbon monolith having hierarchical porosity  

SciTech Connect (OSTI)

A carbon monolith includes a robust carbon monolith characterized by a skeleton size of at least 100 nm, and a hierarchical pore structure having macropores and mesopores.

Dai, Sheng; Guiochon, Georges A; Liang, Chengdu

2014-01-14T23:59:59.000Z

40

Five hierarchical levels of sequence-structure correlation in Christopher Bystroff, Yu Shao and Xin Yuan  

E-Print Network [OSTI]

in the database of known proteins tell the story of the folding pathway and of its evolutionary history in the database of known structures. From the perspective of statistical thermodynamics, a database correlation

Bystroff, Chris

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


41

Characterization of the effects of x-ray irradiation on the hierarchical structure and mechanical properties of human cortical bone  

SciTech Connect (OSTI)

Bone comprises a complex structure of primarily collagen, hydroxyapatite and water, where each hierarchical structural level contributes to its strength, ductility and toughness. These properties, however, are degraded by irradiation, arising from medical therapy or bone-allograft sterilization. We provide here a mechanistic framework for how irradiation affects the nature and properties of human cortical bone over a range of characteristic (nano to macro) length-scales, following x-­ray exposures up to 630 kGy. Macroscopically, bone strength, ductility and fracture resistance are seen to be progressively degraded with increasing irradiation levels. At the micron-­scale, fracture properties, evaluated using in-situ scanning electron microscopy and synchrotron x-ray computed micro-tomography, provide mechanistic information on how cracks interact with the bone-matrix structure. At sub-micron scales, strength properties are evaluated with in-situ tensile tests in the synchrotron using small-/wide-angle x-ray scattering/diffraction, where strains are simultaneously measured in the macroscopic tissue, collagen fibrils and mineral. Compared to healthy bone, results show that the fibrillar strain is decreased by ~40% following 70 kGy exposures, consistent with significant stiffening and degradation of the collagen. We attribute the irradiation-­induced deterioration in mechanical properties to mechanisms at multiple length-scales, including changes in crack paths at micron-­scales, loss of plasticity from suppressed fibrillar sliding at sub-­micron scales, and the loss and damage of collagen at the nano-­scales, the latter being assessed using Raman and Fourier-Transform-Infrared spectroscopy and a fluorometric assay.

Barth, Holly; Zimmermann, Elizabeth; Schaible, Eric; Tang, Simon; Alliston, Tamara; Ritchie, Robert

2011-08-19T23:59:59.000Z

42

Designing of Metallic Photonic Structures and Applications  

SciTech Connect (OSTI)

In this thesis our main interest has been to investigate metallic photonic crystal and its applications. We explained how to solve a periodic photonic structure with transfer matrix method and when and how to use modal expansion method. Two different coating methods were introduced, modifying a photonic structure's intrinsic optical properties and rigorous calculation results are presented. Two applications of metallic photonic structures are introduced. For thermal emitter, we showed how to design and find optimal structure. For conversion efficiency increasing filter, we calculated its efficiency and the way to design it. We presented the relation between emitting light spectrum and absorption and showed the material and structural dependency of the absorption spectrum. By choosing a proper base material and structural parameters, we can design a selective emitter at a certain region we are interested in. We have developed a theoretical model to analyze a blackbody filament enclosed by a metallic mesh which can increase the efficiency of converting a blackbody radiation to visible light. With this model we found that a square lattice metallic mesh enclosing a filament might increase the efficiency of incandescent lighting sources. Filling fraction and thickness dependency were examined and presented. Combining these two parameters is essential to achieve the maximum output result.

Yong-Sung Kim

2006-08-09T23:59:59.000Z

43

CABM Symposium Applications of NMR to structure-based drug design in structural  

E-Print Network [OSTI]

CABM Symposium Applications of NMR to structure-based drug design in structural genomics Robert, structure-based drug design, structural genomics Abstract Structural genomics is poised to have a tremendous design in the era of structural genomics. Introduction Structure-based drug design has established itself

Powers, Robert

44

AHTR Mechanical, Structural, and Neutronic Preconceptual Design  

SciTech Connect (OSTI)

This report provides an overview of the mechanical, structural, and neutronic aspects of the Advanced High Temperature Reactor (AHTR) design concept. The AHTR is a design concept for a large output Fluoride salt cooled High-temperature Reactor (FHR) that is being developed to enable evaluation of the technology hurdles remaining to be overcome prior to FHRs becoming an option for commercial reactor deployment. This report documents the incremental AHTR design maturation performed over the past year and is focused on advancing the design concept to a level of a functional, self-consistent system. The reactor concept development remains at a preconceptual level of maturity. While the overall appearance of an AHTR design is anticipated to be similar to the current concept, optimized dimensions will differ from those presented here. The AHTR employs plate type coated particle fuel assemblies with rapid, off-line refueling. Neutronic analysis of the core has confirmed the viability of a 6-month two-batch cycle with 9 wt. % enriched uranium fuel. Refueling is intended to be performed automatically under visual guidance using dedicated robotic manipulators. The report includes a preconceptual design of the manipulators, the fuel transfer system, and the used fuel storage system. The present design intent is for used fuel to be stored inside of containment for at least six months and then transferred to local dry wells for intermediate term, on-site storage. The mechanical and structural concept development effort has included an emphasis on transportation and constructability to minimize construction costs and schedule. The design intent is that all components be factory fabricated into rail transportable modules that are assembled into subsystems at an on-site workshop prior to being lifted into position using a heavy-lift crane in an open-top style construction. While detailed accident identification and response sequence analysis has yet to be performed, the design concept incorporates fully passive responses to all identified design basis or non-very-low frequency beyond design basis accidents as well as multiple levels of radioactive material containment. Key building design elements include (1) below grade siting to minimize vulnerability to aircraft impact, (2) multiple natural circulation decay heat rejection chimneys, (3) seismic base isolation, and (4) decay heat powered back-up electricity generation.

Varma, V.K.; Holcomb, D.E.; Peretz, F.J.; Bradley, E.C.; Ilas, D.; Qualls, A.L.; Zaharia, N.M.

2012-09-15T23:59:59.000Z

45

Structural Design Challenges in Design Certification Applications for New Reactors  

SciTech Connect (OSTI)

The licensing framework established by the U.S. Nuclear Regulatory Commission under Title 10 of the Code of Federal Regulations (10 CFR) Part 52, “Licenses, Certifications, and Approvals for Nuclear Power Plants,” provides requirements for standard design certifications (DCs) and combined license (COL) applications. The intent of this process is the early reso- lution of safety issues at the DC application stage. Subsequent COL applications may incorporate a DC by reference. Thus, the COL review will not reconsider safety issues resolved during the DC process. However, a COL application that incorporates a DC by reference must demonstrate that relevant site-specific de- sign parameters are confined within the bounds postulated by the DC, and any departures from the DC need to be justified. This paper provides an overview of structural design chal- lenges encountered in recent DC applications under the 10 CFR Part 52 process, in which the authors have participated as part of the safety review effort.

Miranda, M.; Braverman, J.; Wei, X.; Hofmayer, C.; Xu, J.

2011-07-17T23:59:59.000Z

46

Hierarchical Protein Folding Pathways: A Computational Study of Protein Fragments  

E-Print Network [OSTI]

Hierarchical Protein Folding Pathways: A Computational Study of Protein Fragments Nurit Haspel,1 folding model. The model postulates that protein folding is a hierarchical top-down pro- cess. The basic words: protein folding; building blocks; pro- tein structure prediction; hierarchical folding; protein

Haspel, Nurit

47

Final Report of Optimization Algorithms for Hierarchical Problems, with Applications to Nanoporous Materials  

SciTech Connect (OSTI)

The research focuses on the modeling and optimization of nanoporous materials. In systems with hierarchical structure that we consider, the physics changes as the scale of the problem is reduced and it can be important to account for physics at the fine level to obtain accurate approximations at coarser levels. For example, nanoporous materials hold promise for energy production and storage. A significant issue is the fabrication of channels within these materials to allow rapid diffusion through the material. One goal of our research is to apply optimization methods to the design of nanoporous materials. Such problems are large and challenging, with hierarchical structure that we believe can be exploited, and with a large range of important scales, down to atomistic. This requires research on large-scale optimization for systems that exhibit different physics at different scales, and the development of algorithms applicable to designing nanoporous materials for many important applications in energy production, storage, distribution, and use. Our research has two major research thrusts. The first is hierarchical modeling. We plan to develop and study hierarchical optimization models for nanoporous materials. The models have hierarchical structure, and attempt to balance the conflicting aims of model fidelity and computational tractability. In addition, we analyze the general hierarchical model, as well as the specific application models, to determine their properties, particularly those properties that are relevant to the hierarchical optimization algorithms. The second thrust was to develop, analyze, and implement a class of hierarchical optimization algorithms, and apply them to the hierarchical models we have developed. We adapted and extended the optimization-based multigrid algorithms of Lewis and Nash to the optimization models exemplified by the hierarchical optimization model. This class of multigrid algorithms has been shown to be a powerful tool for solving discretized optimization models. Our optimization models are multi-level models, however. They are more general, involving different governing equations at each level. A major aspect of this project was the development of flexible software that can be used to solve a variety of hierarchical optimization problems.

Nash, Stephen G.

2013-11-11T23:59:59.000Z

48

Integrated structural control design of large space structures  

SciTech Connect (OSTI)

Active control of structures has been under intensive development for the last ten years. Reference 2 reviews much of the identification and control technology for structural control developed during this time. The technology was initially focused on space structure and weapon applications; however, recently the technology is also being directed toward applications in manufacturing and transportation. Much of this technology focused on multiple-input/multiple-output (MIMO) identification and control methodology because many of the applications require a coordinated control involving multiple disturbances and control objectives where multiple actuators and sensors are necessary for high performance. There have been many optimal robust control methods developed for the design of MIMO robust control laws; however, there appears to be a significant gap between the theoretical development and experimental evaluation of control and identification methods to address structural control applications. Many methods have been developed for MIMO identification and control of structures, such as the Eigensystem Realization Algorithm (ERA), Q-Markov Covariance Equivalent Realization (Q-Markov COVER) for identification; and, Linear Quadratic Gaussian (LQG), Frequency Weighted LQG and H-/ii-synthesis methods for control. Upon implementation, many of the identification and control methods have shown limitations such as the excitation of unmodelled dynamics and sensitivity to system parameter variations. As a result, research on methods which address these problems have been conducted.

Allen, J.J.; Lauffer, J.P.

1995-01-01T23:59:59.000Z

49

Work Structuring to Achieve Integrated ProductProcess Design  

E-Print Network [OSTI]

Work Structuring to Achieve Integrated Product­Process Design Cynthia C. Y. Tsao, A.M.ASCE1 ; Iris presents "work structuring," a term used to describe the effort of integrating product and process design. As the project progresses, work structuring becomes more focused to guide the design and execution of interacting

Tommelein, Iris D.

50

Applying "Design for Disassembly" to connection design in steel structures  

E-Print Network [OSTI]

Design for Disassembly (DfD), also known as Design for Deconstruction, is an emerging initiative of sustainable construction that favors disassembly over demolition, considering a building's full life cycle during the ...

Silverstein, Scott A. (Scott Aaron)

2009-01-01T23:59:59.000Z

51

Elements of a pragmatic approach for dealing with bias and uncertainty in experiments through predictions : experiment design and data conditioning; %22real space%22 model validation and conditioning; hierarchical modeling and extrapolative prediction.  

SciTech Connect (OSTI)

This report explores some important considerations in devising a practical and consistent framework and methodology for utilizing experiments and experimental data to support modeling and prediction. A pragmatic and versatile 'Real Space' approach is outlined for confronting experimental and modeling bias and uncertainty to mitigate risk in modeling and prediction. The elements of experiment design and data analysis, data conditioning, model conditioning, model validation, hierarchical modeling, and extrapolative prediction under uncertainty are examined. An appreciation can be gained for the constraints and difficulties at play in devising a viable end-to-end methodology. Rationale is given for the various choices underlying the Real Space end-to-end approach. The approach adopts and refines some elements and constructs from the literature and adds pivotal new elements and constructs. Crucially, the approach reflects a pragmatism and versatility derived from working many industrial-scale problems involving complex physics and constitutive models, steady-state and time-varying nonlinear behavior and boundary conditions, and various types of uncertainty in experiments and models. The framework benefits from a broad exposure to integrated experimental and modeling activities in the areas of heat transfer, solid and structural mechanics, irradiated electronics, and combustion in fluids and solids.

Romero, Vicente Jose

2011-11-01T23:59:59.000Z

52

Hierarchical quantum communication  

E-Print Network [OSTI]

A general approach to study the hierarchical quantum information splitting (HQIS) is proposed and the same is used to systematically investigate the possibility of realizing HQIS using different classes of 4-qubit entangled states that are not connected by SLOCC. Explicit examples of HQIS using 4-qubit cluster state and 4-qubit |\\Omega> state are provided. Further, the proposed HQIS scheme is generalized to introduce two new aspects of hierarchical quantum communication. To be precise, schemes of probabilistic hierarchical quantum information splitting and hierarchical quantum secret sharing are obtained by modifying the proposed HQIS scheme. A number of practical situations where hierarchical quantum communication would be of use are also presented.

Chitra Shukla; Anirban Pathak

2013-01-03T23:59:59.000Z

53

Multidisciplinary structural design and optimization for performance, cost, and flexibility  

E-Print Network [OSTI]

Reducing cost and improving performance are two key factors in structural design. In the aerospace and automotive industries, this is particularly true with respect to design criteria such as strength, stiffness, mass, ...

Nadir, William David, 1979-

2005-01-01T23:59:59.000Z

54

Conceptual Phase Structural Design Tool for Microsatellites  

E-Print Network [OSTI]

Gaining traction or momentum in the conceptual design phase for a complex system can be an arduous and daunting process, whether the complex system being designed is a satellite, airplane, car, or one of countless other ...

McLinko, Ryan (Ryan M.)

2011-01-01T23:59:59.000Z

55

Composite structural materials play important roles in many engineering applications because of their potential for com-  

E-Print Network [OSTI]

PROBLEM Composite structural materials play important roles in many engineering applications. Composites are also pervasive among biologi- cal materials, exhibiting precise and intriguing architectures new composite designs that use hierarchical structures have been discovered, going directly from com

Polz, Martin

56

Energy redistribution in hierarchical systems of oscillators  

E-Print Network [OSTI]

The article deals with the mathematical model for media with hierarchical structure. Using the hamiltonian formalism, the dynamical system describing the state of hierarchically connected structural elements was derived. According to the analysis of the Poincar\\'e sections, we found the localized quasi-periodic and chaotic trajectories in the three-level hierarchical model. Moreover, studies of correlation functions shown that the power spectrum for three-level model possesses local maxima characterizing temporal scales with strong correlation. Using the Fourier analysis of the solution's components, we have studied the distribution of energy injected in the system over hierarchical levels. Dynamical phenomena in the multi-level system were studied as well.

V. A. Danylenko; S. V. Mykulyak; S. I. Skurativskyi

2015-03-19T23:59:59.000Z

57

The design and construction of fabric structures  

E-Print Network [OSTI]

In its short history, fabric structures have fascinated architects and engineers alike. Architects appreciate their unusual shapes and forms while engineers delight in their "pure" structural expression. Capable of spanning ...

Fang, Rosemarie

2009-01-01T23:59:59.000Z

58

Optimization Online - Concrete Structure Design Using Mixed ...  

E-Print Network [OSTI]

Nov 26, 2009 ... Abstract: We present a mixed-integer nonlinear programming (MINLP) formulation to achieve minimum-cost designs for reinforced concrete ...

Andres Guerra

2009-11-26T23:59:59.000Z

59

CIVE 452 Spring 1998 Design of Reinforced Concrete Structures  

E-Print Network [OSTI]

CIVE 452 Spring 1998 Design of Reinforced Concrete Structures Instructor: M.O. Eberhard Office: 233 of concrete and steel (CIVE 363). The purpose of the course is to provide seniors with an introduction to the behavior and design of reinforced concrete structures. Course Outline Text Reading 1. Introduction Ch. 1, 2

Eberhard, Marc O.

60

Hierarchical Nanoceramics for Industrial Process Sensors  

SciTech Connect (OSTI)

This project developed a robust, tunable, hierarchical nanoceramics materials platform for industrial process sensors in harsh-environments. Control of material structure at multiple length scales from nano to macro increased the sensing response of the materials to combustion gases. These materials operated at relatively high temperatures, enabling detection close to the source of combustion. It is anticipated that these materials can form the basis for a new class of sensors enabling widespread use of efficient combustion processes with closed loop feedback control in the energy-intensive industries. The first phase of the project focused on materials selection and process development, leading to hierarchical nanoceramics that were evaluated for sensing performance. The second phase focused on optimizing the materials processes and microstructures, followed by validation of performance of a prototype sensor in a laboratory combustion environment. The objectives of this project were achieved by: (1) synthesizing and optimizing hierarchical nanostructures; (2) synthesizing and optimizing sensing nanomaterials; (3) integrating sensing functionality into hierarchical nanostructures; (4) demonstrating material performance in a sensing element; and (5) validating material performance in a simulated service environment. The project developed hierarchical nanoceramic electrodes for mixed potential zirconia gas sensors with increased surface area and demonstrated tailored electrocatalytic activity operable at high temperatures enabling detection of products of combustion such as NOx close to the source of combustion. Methods were developed for synthesis of hierarchical nanostructures with high, stable surface area, integrated catalytic functionality within the structures for gas sensing, and demonstrated materials performance in harsh lab and combustion gas environments.

Ruud, James, A.; Brosnan, Kristen, H.; Striker, Todd; Ramaswamy, Vidya; Aceto, Steven, C.; Gao, Yan; Willson, Patrick, D.; Manoharan, Mohan; Armstrong, Eric, N., Wachsman, Eric, D.; Kao, Chi-Chang

2011-07-15T23:59:59.000Z

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


61

Suitability of salvaged timber in structural design  

E-Print Network [OSTI]

Increased demand for timber construction in the United States has placed a strain on the American timber reserve. At the same time, the annual demolition of thousands of buildings and wood structures results in thousands ...

Davis, James Brandon

2012-01-01T23:59:59.000Z

62

Structural Design Criteria Irving J. Zatz, PPPL  

E-Print Network [OSTI]

unresolvable behavior, perform detailed analysis to determine limit load and apply safety factor of 2 #12 difference in principal stresses · On an S-n curve, allowable stress amplitude limited to the lesser of: ­ 1 and combined via a linear damage relationship and based on the design S-n curve ­ For FIRE, the 3000 full power

63

Evenly distributed unitaries: on the structure of unitary designs  

E-Print Network [OSTI]

We clarify the mathematical structure underlying unitary $t$-designs. These are sets of unitary matrices, evenly distributed in the sense that the average of any $t$-th order polynomial over the design equals the average over the entire unitary group. We present a simple necessary and sufficient criterion for deciding if a set of matrices constitutes a design. Lower bounds for the number of elements of 2-designs are derived. We show how to turn mutually unbiased bases into approximate 2-designs whose cardinality is optimal in leading order. Designs of higher order are discussed and an example of a unitary 5-design is presented. We comment on the relation between unitary and spherical designs and outline methods for finding designs numerically or by searching character tables of finite groups. Further, we sketch connections to problems in linear optics and questions regarding typical entanglement.

D. Gross; K. Audenaert; J. Eisert

2007-05-13T23:59:59.000Z

64

Structural concepts and details for seismic design  

SciTech Connect (OSTI)

This manual discusses building and building component behavior during earthquakes, and provides suggested details for seismic resistance which have shown by experience to provide adequate performance during earthquakes. Special design and construction practices are also described which, although they might be common in some high-seismic regions, may not be common in low and moderate seismic-hazard regions of the United States. Special attention is given to describing the level of detailing appropriate for each seismic region. The UBC seismic criteria for all seismic zones is carefully examined, and many examples of connection details are given. The general scope of discussion is limited to materials and construction types common to Department of Energy (DOE) sites. Although the manual is primarily written for professional engineers engaged in performing seismic-resistant design for DOE facilities, the first two chapters, plus the introductory sections of succeeding chapters, contain descriptions which are also directed toward project engineers who authorize, review, or supervise the design and construction of DOE facilities. 88 refs., 188 figs.

Not Available

1991-09-01T23:59:59.000Z

65

Optimal Fractal-Like Hierarchical Honeycombs Ramin Oftadeh,1  

E-Print Network [OSTI]

.e., zeroth) to fourth order hierarchical honeycombs fabricated using 3D printing. The physical thickness of the structures is constant, tn ¼ 2 mm, because of the limitations of the 3D printing. To maintain the structure

Vaziri, Ashkan

66

Motion based seismic design and loss estimation of diagrid structures  

E-Print Network [OSTI]

Diagrids are becoming an increasingly popular structural system in high rise design and construction. Little research has been performed on the seismic performance of Diagrids and how it integrates with seismic loss ...

Liptack, Robert J. (Robert Jeffrey)

2013-01-01T23:59:59.000Z

67

DESIGN PHILOSOPHY FOR STEEL STRUCTURES IN MODERATE SEISMIC REGIONS  

E-Print Network [OSTI]

DESIGN PHILOSOPHY FOR STEEL STRUCTURES IN MODERATE SEISMIC REGIONS E.M. Hines1 and L.A. Fahnestock2 ABSTRACT The authors propose a design philosophy for steel buildings in moderate seismic regions that draws to the continued development and validation of this philosophy. Introduction Recent widespread adoption

Hines, Eric

68

CEE 812 Structural Engineering Seminar Series Design and Construction  

E-Print Network [OSTI]

with energy industry structures, including nuclear power plants, wind turbines and foundations, and stacks Energy Commission and participated in writing the City's Sustainability and Climate Action Plans. #12;CEE 812 ­ Structural Engineering Seminar Series Design and Construction of Energy Industry

Kamat, Vineet R.

69

A design guide and specification for small explosive containment structures  

SciTech Connect (OSTI)

The design of structural containments for testing small explosive devices requires the designer to consider the various aspects of the explosive loading, i.e., shock and gas or quasistatic pressure. Additionally, if the explosive charge has the potential of producing damaging fragments, provisions must be made to arrest the fragments. This may require that the explosive be packed in a fragment attenuating material, which also will affect the loads predicted for containment response. Material also may be added just to attenuate shock, in the absence of fragments. Three charge weights are used in the design. The actual charge is used to determine a design fragment. Blast loads are determined for a {open_quotes}design charge{close_quotes}, defined as 125% of the operational charge in the explosive device. No yielding is permitted at the design charge weight. Blast loads are also determined for an over-charge, defined as 200% of the operational charge in the explosive device. Yielding, but no failure, is permitted at this over-charge. This guide emphasizes the calculation of loads and fragments for which the containment must be designed. The designer has the option of using simplified or complex design-analysis methods. Examples in the guide use readily available single degree-of-freedom (sdof) methods, plus static methods for equivalent dynamic loads. These are the common methods for blast resistant design. Some discussion of more complex methods is included. Generally, the designer who chooses more complex methods must be fully knowledgeable in their use and limitations. Finally, newly fabricated containments initially must be proof tested to 125% of the operational load and then inspected at regular intervals. This specification provides guidance for design, proof testing, and inspection of small explosive containment structures.

Marchand, K.A.; Cox, P.A.; Polcyn, M.A. [Southwest Research Institute, San Antonio, TX (United States)

1994-12-01T23:59:59.000Z

70

Supplementary Information MODELING HIERARCHICALLY STRUCTURED  

E-Print Network [OSTI]

cylindrical ( phases, pre confirmed la d spherical ( n associated was predict for DBCP m herical (Scp), ols

Lisal, Martin

71

Structural Design Feasibility Study for the Global Climate Experiment  

SciTech Connect (OSTI)

Neon, Inc. is proposing to establish a Global Change Experiment (GCE) Facility to increase our understanding of how ecological systems differ in their vulnerability to changes in climate and other relevant global change drivers, as well as provide the mechanistic basis for forecasting ecological change in the future. The experimental design was initially envisioned to consist of two complementary components; (A) a multi-factor experiment manipulating CO{sub 2}, temperature and water availability and (B) a water balance experiment. As the design analysis and cost estimates progressed, it became clear that (1) the technical difficulties of obtaining tight temperature control and maintaining elevated atmospheric carbon dioxide levels within an enclosure were greater than had been expected and (2) the envisioned study would not fit into the expected budget envelope if this was done in a partially or completely enclosed structure. After discussions between NEON management, the GCE science team, and Keith Lewin, NEON, Inc. requested Keith Lewin to expand the scope of this design study to include open-field exposure systems. In order to develop the GCE design to the point where it can be presented within a proposal for funding, a feasibility study of climate manipulation structures must be conducted to determine design approaches and rough cost estimates, and to identify advantages and disadvantages of these approaches including the associated experimental artifacts. NEON, Inc requested this design study in order to develop concepts for the climate manipulation structures to support the NEON Global Climate Experiment. This study summarizes the design concepts considered for constructing and operating the GCE Facility and their associated construction, maintenance and operations costs. Comparisons and comments about experimental artifacts, construction challenges and operational uncertainties are provided to assist in selecting the final facility design. The overall goal of this report is to provide a cost and technological basis for selection of the appropriate GCE Facility design.

Lewin,K.F.; Nagy, J.

2008-12-01T23:59:59.000Z

72

ORE 630 Structural Analysis in Ocean Engineering Designation  

E-Print Network [OSTI]

ORE 630 Structural Analysis in Ocean Engineering Designation Offshore Engineering Required Course to Program Outcomes Program Outcome 2: Basic science, mathematics, & engineering Program Outcome 4: Ocean engineering specialization Program Outcome 5: Use of latest tools in ocean engineering Program Outcome 6

Frandsen, Jannette B.

73

Design-Load Basis for LANL Structures, Systems, and Components  

SciTech Connect (OSTI)

This document supports the recommendations in the Los Alamos National Laboratory (LANL) Engineering Standard Manual (ESM), Chapter 5--Structural providing the basis for the loads, analysis procedures, and codes to be used in the ESM. It also provides the justification for eliminating the loads to be considered in design, and evidence that the design basis loads are appropriate and consistent with the graded approach required by the Department of Energy (DOE) Code of Federal Regulation Nuclear Safety Management, 10, Part 830. This document focuses on (1) the primary and secondary natural phenomena hazards listed in DOE-G-420.1-2, Appendix C, (2) additional loads not related to natural phenomena hazards, and (3) the design loads on structures during construction.

I. Cuesta

2004-09-01T23:59:59.000Z

74

Design and Structural Analysis of Mars Rover RTG  

SciTech Connect (OSTI)

The paper describes the design and the structural and mass analysis of a Radioisotope Thermoelectric Generators (RTGs) for powering the MARS Rover vehicle, which is a critical element of the unmanned Mars Rover and Sample Return mission (MRSR). The RTG design study was conducted by Fairchild Space Company for the U.S. Department of Energy, in support of the Jet Propulsion Laboratory's MRSR project.; The paper briefly describes a reference mission scenario, an illustrative Rover design and activity pattern on Mars, and its power system requirements and environmental constraints, including the RTG cooling requirements during transit to Mars. It identifies the key RTG design problem, i.e. venting the helium generated by the fuel's alpha decay without intrusion of the Martian atmosphere into the RTG, and proposes a design approach for solving that problem.; Using that approach, it describes a very conservative baseline RTG design. The design is based on the proven and safety-qualified General Purpose Heat Source module, and employs standard thermoelectric unicouples whose reliability and performance stability has been extensively demonstrated on previous space missions. The heat source of the 250-watt RTG consists of a stack of 18 separate modules that is supported at its ends but not along its length. The paper describes and analyzes the structure that holds the stack together during Earth launch and Mars operations but allows it to come apart in case of an inadvertent reentry.; A companion paper presented at this conference describes the RTG's thermal and electrical analysis, and compares its performance with that of several lighter but less conservative design options.; There is a duplicate copy in the ESD files. This document is not relevent to OSTI Library. Do not send.

Schock, Alfred; Hamrick, T.; Sankarankandath, V.; Shirbacheh, M.

1989-09-29T23:59:59.000Z

75

Hierarchical and size dependent mechanical properties of silica and silicon nanostructures inspired by diatom algae  

E-Print Network [OSTI]

Biology implements fundamental principles that allow for attractive mechanical properties, as observed in biomineralized structures. For example, diatom algae contain nanoporous hierarchical silicified shells that provide ...

García, Andre Phillipé

2010-01-01T23:59:59.000Z

76

Hierarchical carbon fiber composites with radially aligned carbon nanotubes : preservation of in-plane tensile properties  

E-Print Network [OSTI]

Hierarchical carbon-nanotube (CNT)-based composites have significant potential to expand the performance and functionality of aerospace composite structures. Notably, circumferentially aligned CNT arrays have previously ...

Li, Richard, S.M. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

77

Structural design criteria for high heat flux components.  

SciTech Connect (OSTI)

The high temperature design rules of the ITER Structural Design Criteria (ISDC), are applied to first wall designs with high heat flux. The maximum coolant pressure and surface heat flux capabilities are shown to be determined not only by the mechanical properties of the first wall material but also by the details of the blanket design. In a high power density self-cooled lithium blanket, the maximum primary stress in the first wall is controlled by many of the geometrical parameters of the blanket, such as, first wall span, first wall curvature, first wall thickness, side wall thickness, and second wall thickness. The creep ratcheting lifetime of the first wall is also shown to be controlled by many of the same geometrical parameters as well as the coolant temperature. According to most high temperature design codes, the time-dependent primary membrane stress allowable are based on the average temperature (ignoring thermal stress). Such a procedure may sometimes be unconservative, particularly for embrittled first walls with large temperature gradients. The effect of secondary (thermal) stresses on the accumulation of creep deformation is illustrated with a vanadium alloy flat plate first wall design.

Majumdar, S.

1999-07-14T23:59:59.000Z

78

Oberseminar -20.12.2004 A Hierarchical Model for simulating  

E-Print Network [OSTI]

;Motivation: HPC 10-2 10-3 10-4 10-5 10-6 lnP(s) ln(s) sand cement silica fume gravel P(r) = ar-b rmin Granular Media. ­ p. #12;Apollonian Packing b 3.5 in 3D Oberseminar - 20.12.2004 A Hierarchical Model for simulating very polydisperse Granular Media. ­ p. #12;Local packing We use the hierarchical structure

Harting, Jens

79

Hazard consistent structural demands and in-structure design response spectra  

SciTech Connect (OSTI)

Current analysis methodology for the Soil Structure Interaction (SSI) analysis of nuclear facilities is specified in ASCE Standard 4. This methodology is based on the use of deterministic procedures with the intention that enough conservatism is included in the specified procedures to achieve an 80% probability of non-exceedance in the computed response of a Structure, System. or Component for given a mean seismic design input. Recently developed standards are aimed at achieving performance-based, risk consistent seismic designs that meet specified target performance goals. These design approaches rely upon accurately characterizing the probability (hazard) level of system demands due to seismic loads consistent with Probabilistic Seismic Hazard Analyses. This paper examines the adequacy of the deterministic SSI procedures described in ASCE 4-98 to achieve an 80th percentile of Non-Exceedance Probability (NEP) in structural demand, given a mean seismic input motion. The study demonstrates that the deterministic procedures provide computed in-structure response spectra that are near or greater than the target 80th percentile NEP for site profiles other than those resulting in high levels of radiation damping. The deterministic procedures do not appear to be as robust in predicting peak accelerations, which correlate to structural demands within the structure.

Houston, Thomas W [Los Alamos National Laboratory; Costantino, Michael C [Los Alamos National Laboratory; Costantino, Carl J [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

80

Structure and Design a Finance Program with Loan Loss Reserve Funds  

Broader source: Energy.gov [DOE]

The process for structuring and designing a finance program with a loan loss reserve (LLR) fund typically includes research and preparing a finance program design document.

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


81

Polynomial continuation in the design of deployable structures  

E-Print Network [OSTI]

(De Focatiis & Guest, 2002). Some of the most interesting applications are to be found in satellite design, in which deployable booms, masts, antennae, radars and solar arrays are commonplace. These deployable structures are launched in the stowed... -Gru??bler-Kutzbach criterion. An example of the deployment of such an overconstrained mechanism is given in Figure 1.7. De- ployable frames have been proposed for use in space applications (Chen & You, 2006a,b) (in particular panel and antenna deployment (Pellegrino et al...

Viquerat, Andrew David

2012-01-10T23:59:59.000Z

82

Design of structured vector quantizers for diversity communication systems  

E-Print Network [OSTI]

. B. Two-Dimensional Index Assignments 1. Hexagonal l, sttice 2. S Lattice 8 9 ll 17 18 21 AN APPROACH TO STRUCTURED VECTOR QUANTI- ZATION FOR MULTIPI E CHANNELS . . . . . . , . . . . . . 24 A. SVQ for Two Channels . B. Design Algorithm 1... assignment, k=2 5J vu1 LIST OF FIGURES FIGURE Page The MDSQ in a diversity system. Example of a labeling of the real line with indices . Sicle lattice used with Hexagonal index assignment 17 19 Central lattice formed from two offset Hexagonal...

Buzi, Larry Z

1994-01-01T23:59:59.000Z

83

ILLINOIS INSTITUTE OF TECHNOLOGY Fall 2011 DEPARTMENT OF CAEE CAE 303 STRUCTURAL DESIGN I: STEEL STRUCTURES  

E-Print Network [OSTI]

: STEEL STRUCTURES Instructor: Jay Shen, Ph.D., P.E., S.E., 215 AM Hall; Phone: (312) 567-5860. E) Steel Design (3rd or later Edition) by William T. Segui; (2) American Institute of Steel Construction (AISC) Manual of Steel Construction, 14th Edition. Students can purchase the AISC Manual by following

Heller, Barbara

84

Designing Allosteric Control into Enzymes by Chemical Rescue of Structure  

SciTech Connect (OSTI)

Ligand-dependent activity has been engineered into enzymes for purposes ranging from controlling cell morphology to reprogramming cellular signaling pathways. Where these successes have typically fused a naturally allosteric domain to the enzyme of interest, here we instead demonstrate an approach for designing a de novo allosteric effector site directly into the catalytic domain of an enzyme. This approach is distinct from traditional chemical rescue of enzymes in that it relies on disruption and restoration of structure, rather than active site chemistry, as a means to achieve modulate function. We present two examples, W33G in a {beta}-glycosidase enzyme ({beta}-gly) and W492G in a {beta}-glucuronidase enzyme ({beta}-gluc), in which we engineer indole-dependent activity into enzymes by removing a buried tryptophan side chain that serves as a buttress for the active site architecture. In both cases, we observe a loss of function, and in both cases we find that the subsequent addition of indole can be used to restore activity. Through a detailed analysis of {beta}-gly W33G kinetics, we demonstrate that this rescued enzyme is fully functionally equivalent to the corresponding wild-type enzyme. We then present the apo and indole-bound crystal structures of {beta}-gly W33G, which together establish the structural basis for enzyme inactivation and rescue. Finally, we use this designed switch to modulate {beta}-glycosidase activity in living cells using indole. Disruption and recovery of protein structure may represent a general technique for introducing allosteric control into enzymes, and thus may serve as a starting point for building a variety of bioswitches and sensors.

Deckert, Katelyn; Budiardjo, S. Jimmy; Brunner, Luke C.; Lovell, Scott; Karanicolas, John (Kansas)

2012-08-07T23:59:59.000Z

85

New approach to the design of core support structures for large LMFBR plants  

SciTech Connect (OSTI)

The paper describes an innovative design concept for a LMFBR Core Support Structure. A hanging Core Support Structure is described and analyzed. The design offers inherent safety features, constructibility advantages, and potential cost reductions.

Burelbach, J.P.; Kann, W.J.; Pan, Y.C.; Saiveau, J.G.; Seidensticker, R.W.

1984-01-01T23:59:59.000Z

86

CONCRETE STRUCTURE DESIGN USING MIXED-INTEGER NONLINEAR PROGRAMMING WITH COMPLEMENTARITY  

E-Print Network [OSTI]

CONCRETE STRUCTURE DESIGN USING MIXED-INTEGER NONLINEAR PROGRAMMING WITH COMPLEMENTARITY programming (MINLP) formulation to achieve mini- mum-cost designs for reinforced concrete (RC) structures for concrete, steel reinforcing bars, and formwork according to typical contractor methods. Restrictions

87

Design and evaluation of large scale pultruded fiberglass tubular structures  

SciTech Connect (OSTI)

Large solid wood structures have been used in structural applications such as utility poles and marine pilings for a long time. A pultruded fiberglass reinforced polymer composite utility pole has been designed by the Composite Power Corporation of Las Vegas, Nevada which meets or exceeds the wood pole strength standards. This type of pole has many advantages over traditional wood, metal or concrete poles including: lighter weight, easier to climb and service, better dielectric and fire resistance properties, and it is more environmentally sound than treated wood poles. Utility crossarms, other attachments, and climbing devices are secured to grooves which run the entire length of the pole so there is no need to drill holes or wear spiked boots which would compromise the strength of the pole. Bending and torsion experiments have been conducted to determine if the present design meets the strength requirements of a forty foot Class one wood pole. Initial results of the composite pole tests showed a 17 percent advantage in bending strength, a 449 percent advantage in strength due to a vertical load applied to a crossarm, and a 43 percent advantage in twisting strength. Plans for further material characterization experiments and detailed stress and failure analysis are discussed.

O`Toole, B.J. [Univ. of Nevada, Las Vegas, NV (United States). Mechanical Engineering Department

1994-12-31T23:59:59.000Z

88

INVERSE PROTEIN FOLDING, HIERARCHICAL OPTIMISATION  

E-Print Network [OSTI]

INVERSE PROTEIN FOLDING, HIERARCHICAL OPTIMISATION AND TIE KNOTS Thomas M. A. Fink st. john Introduction 3 1.1 Inverse Protein Folding 3 1.2 Hierarchical Optimisation 5 1.3 Tie Knots 6 1.4 Schematic Organisation 6 1.5 Publications 9 2 Protein Folding, Inverse Protein Folding and Energy Landscapes 10 2

Halligan, Daniel

89

Demonstrating Structural Adequacy of Nuclear Power Plant Containment Structures for Beyond Design-Basis Pressure Loadings  

SciTech Connect (OSTI)

ABSTRACT Demonstrating the structural integrity of U.S. nuclear power plant (NPP) containment structures, for beyond design-basis internal pressure loadings, is necessary to satisfy Nuclear Regulatory Commission (NRC) requirements and performance goals. This paper discusses methods for demonstrating the structural adequacy of the containment for beyond design-basis pressure loadings. Three distinct evaluations are addressed: (1) estimating the ultimate pressure capacity of the containment structure (10 CFR 50 and US NRC Standard Review Plan, Section 3.8) ; (2) demonstrating the structural adequacy of the containment subjected to pressure loadings associated with combustible gas generation (10 CFR 52 and 10 CFR 50); and (3) demonstrating the containment structural integrity for severe accidents (10 CFR 52 as well as SECY 90-016, SECY 93-087, and related NRC staff requirements memoranda (SRMs)). The paper describes the technical basis for specific aspects of the methods presented. It also presents examples of past issues identified in licensing activities related to these evaluations.

Braverman, J.I.; Morante, R.

2010-07-18T23:59:59.000Z

90

Software design implementation document for TRAC-M data structures  

SciTech Connect (OSTI)

The Transient Reactor Analysis Code (TRAC)-M system-wide and component data structures are to be reimplemented by using the new features of Fortran 90 (F90). There will be no changes to the conceptual design, data flow, or computational flow with respect to the current TRAC-P, except that readability, maintainability, and extensibility will be improved. However, the task described here is a basic step that does not meet all future needs of the code, especially regarding extensibility. TRAC-M will be fully functional and will produce null computational changes with respect to TRAC-P, Version 5.4.25; computational efficiency will not be degraded significantly. The existing component and functional modularity and possibilities for coarse-grained parallelism will be retained.

Jolly-Woodruff, S. [Ogden Environmental and Energy Services (United States); Mahaffy, J. [Pennsylvania State Univ., University Park, PA (United States); Giguere, P.; Dearing, J.; Boyack, B. [Los Alamos National Lab., NM (United States)

1997-07-01T23:59:59.000Z

91

Conversion of Ethanol to Hydrocarbons on Hierarchical HZSM-5 Zeolites  

SciTech Connect (OSTI)

This study reports synthesis, characterization, and catalytic activity of the nano-size hierarchical HZSM-5 zeolite with high mesoporosity produced via a solvent evaporation procedure. Further, this study compares hierarchical zeolites with conventional HZSM-5 zeolite with similar Si/Al ratios for the ethanol-to-hydrocarbon conversion process. The catalytic performance of the hierarchical and conventional zeolites was evaluated using a fixed-bed reactor at 360 °C, 300 psig, and a weight hourly space velocity of 7.9 h-1. For the low Si/Al ratio zeolite (~40), the catalytic life-time for the hierarchical HZSM-5 was approximately 2 times greater than the conventional HZSM-5 despite its coking amount deposited 1.6 times higher than conventional HZSM-5. For the high Si/Al ratio zeolite (~140), the catalytic life-time for the hierarchical zeolite was approximately 5 times greater than the conventional zeolite and the amount of coking deposited was 2.1 times higher. Correlation was observed between catalyst life time, porosity, and the crystal size of the zeolite. The nano-size hierarchical HZSM-5 zeolites containing mesoporosity demonstrated improved catalyst life-time compared to the conventional catalyst due to faster removal of products, shorter diffusion path length, and the migration of the coke deposits to the external surface from the pore structure.

Ramasamy, Karthikeyan K.; Zhang, He; Sun, Junming; Wang, Yong

2014-12-15T23:59:59.000Z

92

The design of lightweight composite structures, for example airframe structures, relies on extensive testing, coupled to a  

E-Print Network [OSTI]

is also researching ceramic matrix "hot" structures, nano-composites, and multi-material structuresSEMTE abstract The design of lightweight composite structures, for example airframe structures will be highlighted. Finite element models developed for laminated composites that can be used in ICME and "digital

Reisslein, Martin

93

Multiscale modeling and simulation of deformation and failure mechanisms of hierarchical alpha-helical protein materials  

E-Print Network [OSTI]

Alpha-helical (AH) protein structures are critical building blocks of life, representing the key constituents of biological materials such as cells, hair, hoof and wool, where they assemble to form hierarchical structures. ...

Bertaud, Jeremie

2009-01-01T23:59:59.000Z

94

A modular object-oriented framework for hierarchical multi-resolution robot simulation  

E-Print Network [OSTI]

of a commercial industrial robot. KEYWORDS: Robot simulation; Object orientation; Hierarchical simulation. 1 available today are more concerned with robot task programming applications rather than design. WhileA modular object-oriented framework for hierarchical multi- resolution robot simulation Sanghoon

Treuille, Adrien

95

Direct hierarchical assembly of nanoparticles  

SciTech Connect (OSTI)

The present invention provides hierarchical assemblies of a block copolymer, a bifunctional linking compound and a nanoparticle. The block copolymers form one micro-domain and the nanoparticles another micro-domain.

Xu, Ting; Zhao, Yue; Thorkelsson, Kari

2014-07-22T23:59:59.000Z

96

Hierarchical Silica Nanostructures Inspired by Diatom Algae Yield Superior Deformability, Toughness, and Strength  

E-Print Network [OSTI]

Hierarchical Silica Nanostructures Inspired by Diatom Algae Yield Superior Deformability, Toughness algae that is mainly composed of amorphous silica, which features a hierarchical structure that ranges in diatom algae as a basis to study a bioinspired nanoporous material implemented in crystalline silica. We

Buehler, Markus J.

97

Damage-based design of steel structures. Dr. Georgios Kamaris, School of Engineering, University of Warwick  

E-Print Network [OSTI]

Damage-based design of steel structures. Dr. Georgios Kamaris, School of Engineering, University method for seismic design of plane steel moment resisting framed structures is developed. This method of Steel Structures (2011) at the Department of Civil Engineering of the Univ. of Patras (Greece). He

Davies, Christopher

98

Design of a building structural skin using multi-objective optimization techniques  

E-Print Network [OSTI]

Multi-disciplinary System Design Optimization was used to design the geometry and to select the materials for the structural facade of a building. A multi-objective optimization model was developed, capable of optimizing ...

Merello, Riccardo

2006-01-01T23:59:59.000Z

99

Optimized design and structural analysis of a non-pressurized manned submersible  

E-Print Network [OSTI]

This thesis presents an approach to the structural design and optimization of a non-pressurized manned submersible (NPMS), a type of fully "flooded" submersible based on a SEAL Delivery Vehicle (SDV) Design Concept. Using ...

Shepard, Kenneth (Kenneth S.)

2011-01-01T23:59:59.000Z

100

Risk and Performance Based Fire Safety Design of Steel and Composite Structures   

E-Print Network [OSTI]

For the development of performance based design on a proper scientific basis the use of the concept of risk is inevitable. However, the application of this concept to actual structural design is not simple because of the ...

Lange, David

2009-01-01T23:59:59.000Z

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


101

A Support Vector Method for Hierarchical Asa Ben-Hur  

E-Print Network [OSTI]

algorithms are usually limited in their expressive power, i.e. a certain cluster structure is assumed. The points inside each separate piece are interpreted as beloging to the same cluster. The hierarchical, with , the input space. Using a nonlinear transformation from to some high dimensional feature-space, we look

Siegelmann , Hava T

102

Programming Hierarchical Supramolecular Nanostructures by Molecular Design  

E-Print Network [OSTI]

Lingenfelder,, Stefano Fabris,§ Guido Fratesi,§, Riccardo Ferrando, Thomas Classen,,¶ Klaus Kern functional theory calculations, and kinetic Monte Carlo simulations are used to characterize and rationalize

Gao, Hongjun

103

Extending the hierarchical systems knowledge representation framework : interfacing with geographic information systems  

E-Print Network [OSTI]

This thesis presents the design and implementation of a geographic information systems framework in which engineering systems can be created and analyzed. This framework extends the hierarchical systems knowledge representation ...

Phillips, Reesa Brooke

2008-01-01T23:59:59.000Z

104

Concrete Structure Design Using Mixed-Integer Nonlinear ...  

E-Print Network [OSTI]

Nov 24, 2009 ... demonstrate the ability to conduct complex inelastic analysis of RC ... rounding operations to obtain discrete-valued, constructible design ...

2009-11-24T23:59:59.000Z

105

Incremental Hierarchical Clustering of Text Documents  

E-Print Network [OSTI]

distribution is demonstrated. 1 Introduction Document clustering is an effective tool to manage informationIncremental Hierarchical Clustering of Text Documents by Nachiketa Sahoo Adviser: Jamie Callan May 5, 2006 Abstract Incremental hierarchical text document clustering algorithms are important

Gordon, Geoffrey J.

106

The effects of integrating formwork knowledge and experience with structural design of reinforced concrete structures on project outcome  

E-Print Network [OSTI]

Fragmentation in design and construction has been a main cause of failures in reinforced concrete structures. This fragmentation is attributed to the complex nature of projects and the lack of communication and clear responsibility definition among...

Arditzoglou, Artemis Yani

1993-01-01T23:59:59.000Z

107

Studies on Hazard Characterization for Performance-based Structural Design  

E-Print Network [OSTI]

-based design procedures. This research examined and extended the state-of-the-art in hazard characterization (wind and surge) and risk-based design procedures (seismic). State-of-the-art hurricane models (including wind field, tracking and decay models...

Wang, Yue

2010-07-14T23:59:59.000Z

108

Seismic Screening, Evaluation, Rehabilitation, and Design Provisions for Wood-Framed Structures  

E-Print Network [OSTI]

Seismic Screening, Evaluation, Rehabilitation, and Design Provisions for Wood-Framed Structures Preston Baxter, M.ASCE1 ; Thomas H. Miller, M.ASCE2 ; and Rakesh Gupta, M.ASCE3 Abstract: Seismic Database subject headings: Seismic analysis; Seismic design; Wood structures; Shear walls; Diaphragms

Gupta, Rakesh

109

Concrete Structure Design Using Mixed-Integer Nonlinear Programming with Complementarity Constraints  

E-Print Network [OSTI]

Concrete Structure Design Using Mixed-Integer Nonlinear Programming with Complementarity) formulation to achieve minimum-cost designs for reinforced concrete (RC) structures that satisfy building code requirements. The objective function includes material and labor costs for concrete, steel reinforcing bars

110

Conceptual design of an L-band recirculating superconducting traveling wave accelerating structure for ILC  

SciTech Connect (OSTI)

With this paper, we propose the conceptual design of a traveling wave accelerating structure for a superconducting accelerator. The overall goal is to study a traveling wave (TW) superconducting (SC) accelerating structure for ILC that allows an increased accelerating gradient and, therefore reduction of the length of the collider. The conceptual studies were performed in order to optimize the acceleration structure design by minimizing the surface fields inside the cavity of the structure, to make the design compatible with existing technology, and to determine the maximum achievable gain in the accelerating gradient. The proposed solution considers RF feedback system redirecting the accelerating wave that passed through the superconducting traveling wave acceleration (STWA) section back to the input of the accelerating structure. The STWA structure has more cells per unit length than a TESLA structure but provides an accelerating gradient higher than a TESLA structure, consequently reducing the cost. In this paper, the STWA cell shape optimization, coupler cell design and feedback waveguide solution are considered. We also discuss the field flatness in the superconducting TW structure, the HOM modes and multipactor performance have been studied as well. The proposed TW structure design gives an overall 46% gain over the SW ILC structure if the 10 m long TW structure is employed.

Avrakhov, P.; Kanareykin, A.; Liu, Z.; Kazakov, S.; /KEK, Tsukuba; Solyak, N.; /Fermilab; Yakovlev, V.; /Omega-P, New Haven /Yale U.; Gai, W.; /Argonne

2007-06-01T23:59:59.000Z

111

The structure of conservation : experiments in representing design knowledge for arid lands design  

E-Print Network [OSTI]

This thesis proposes, through a multi-layered exploration, the development of a system of computer tools for architects. The research consists of a series of "design sessions" in the context of a desert design problem. The ...

Bennett, Andrew M. (Andrew Michael)

1987-01-01T23:59:59.000Z

112

Manufacturing and fracture of hierarchical composite materials enhanced with aligned carbon nanotubes  

E-Print Network [OSTI]

Hierarchical advanced composite structures comprised of both nano- and micro-scale fibers are currently being studied as next-generation materials for multifunctional aerospace applications. Carbon nanotubes (CNTs) are an ...

Wicks, Sunny S

2014-01-01T23:59:59.000Z

113

PID plus fuzzy controller structures as a design base for industrial applications  

E-Print Network [OSTI]

PID plus fuzzy controller structures as a design base for industrial applications Leonid Reznik Abstract This paper investigates the practical ways of designing effective combinations of classical PID projects, which are studied in greater detail. The first one includes the design of a FC supervising a PID

Reznik, Leon

114

Quantifying architects' and engineers' use of structural design software  

E-Print Network [OSTI]

Both architects and engineers encounter significant barriers and hurdles that compartmentalize both fields and increase the complexity of collaborative design. In addition to little interaction between both fields, software ...

Arnaud, Virginie B. (Virginie Blandine)

2013-01-01T23:59:59.000Z

115

accelerating structure design: Topics by E-print Network  

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

contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 103 New model for auroral acceleration: O-shaped potential...

116

Experimental design for study of nucleate boiling in porous structures  

E-Print Network [OSTI]

The superheat required to initiate nucleate boiling inside porous wicks is not well understood in practice. This thesis reports the design of an experimental setup for investigating the onset of vapor nucleation in sintered ...

Kelley, Mitchell Joseph

2011-01-01T23:59:59.000Z

117

Multiscale structural and mechanical design of mineralized biocomposites  

E-Print Network [OSTI]

Gastropod mollusk nacre tablets and Polypterus senegalus armored scales share common features such as a very complex and changing structure spanning several length scales. The smallest building blocks are single crystals, ...

Bruet, Benjamin J. F. (Benjamin Jean Fernand), 1980-

2008-01-01T23:59:59.000Z

118

Aerodynamic-Structural Design Studies of Low-Sweep Transonic Wings  

E-Print Network [OSTI]

Aerodynamic-Structural Design Studies of Low-Sweep Transonic Wings Antony Jameson Department level. High-fidelity aerodynamic and aerodynamic-structural optimizations are performed on a set to significantly reduce wing sweep without incurring either aerodynamic or structural penalties, especially for M

Jameson, Antony

119

An Affordable Approach for Robust Design of Thick Laminated Composite Structure  

E-Print Network [OSTI]

An Affordable Approach for Robust Design of Thick Laminated Composite Structure Wei Chen* Assistant of thick laminated composite structures. Our approach integrates the principles of the Robust Concept-level optimization procedure for managing the complexity of composite structure optimization. Foundational

Chen, Wei

120

Integrated structural and thermal design of an entry vehicle aeroshell  

E-Print Network [OSTI]

Concept. Element Types Used in the Finite Element Model. . . . 17 23 Application of LOX Mass to Shell Wall . 25 12 Internal Pressure Exerted on the Common Tank Wall . . . 26 13 Minimum Required Thickness of the Aluminum Shell. . . . . . . . . 28 14... based on acceleration loads, pressures, and etc. Next, a thermal protection system is added to the exterior of the shell. This methodology leads to two main problems related to the efiiciency of a reusable structure 1. The structure is redundant...

Cochran, David Brian

1996-01-01T23:59:59.000Z

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


121

Lattice-structures and constructs with designed thermal expansion coefficients  

SciTech Connect (OSTI)

A thermal expansion-managed lattice structure having a plurality of unit cells each having flexure bearing-mounted tabs supported on a base and actuated by thermal expansion of an actuator having a thermal expansion coefficient greater than the base and arranged so that the tab is inwardly displaced into a base cavity. The flexure bearing-mounted tabs are connected to other flexure-bearing-mounted tabs of adjacent unit cells so that the adjacent unit cells are spaced from each other to accommodate thermal expansion of individual unit cells while maintaining a desired bulk thermal expansion coefficient of the lattice structure as a whole.

Spadaccini, Christopher; Hopkins, Jonathan

2014-10-28T23:59:59.000Z

122

ITER Engineering Design Activities -R & DITER-Magnets and Structures  

E-Print Network [OSTI]

(done in L-1) the manufacturing defines appropriate tolerance targets, procedures and quality control the plasma against resistive wall mode instabilities. The magnet system weighs, in total, about 8,700 t quantities of Nb3Sn strand to a uniform quality; ¥ jacketing of a cable of this strand to provide structural

123

ASCE/SEI Technical Committee on Optimal Structural Design  

E-Print Network [OSTI]

-Champaign (Control Member) · Christopher M. Foley, Marquette University (Control Member and Assoc. Editor) · Dan, Brigham Young University (Member) · Ali Memari, Penn State University (Member) · Keith Mueller (Member by Christopher Foley. The session has five papers. b. "Soft Computing Potentials in Structural Optimization

Swan Jr., Colby Corson

124

Non-Deterministic Design and Analysis of Parameterized Optical Structures during Conceptual Design  

E-Print Network [OSTI]

Scott A. Uebelhart and David W. Miller June 2006 SSL # 5-06 #12;#12;Non-Deterministic Design. Miller June 2006 SSL#5­06 This report is based on the unaltered thesis of Scott Alan Uebelhart submitted

125

Abstract A Hierarchical Algorithm for Radiosity Daylighting  

E-Print Network [OSTI]

A new daylight simulation method for radiosity environments is presented. Daylight illumination is transported in a first step where sun and sky are represented as a set of directional sources. Light is transported using parallel projections of these sources. The scene mesh is adaptively subdivided using energy and visibility criteria obtained from a extended scan-line algorithm that computes a layered depth image for each projection. In a second step, diffuse intereflection is computed through a hierarchical Monte Carlo radiosity algorithm. The method is feasible for it extension for environments containing specular surfaces. Relative short time view-independent global illumination results can be obtained with the proposed method, which make it suitable for daylight building design and analysis applications for both indoors and outdoors environments. 1

Gonzalo Besuievsky; Ignacio Martin

126

A computational approach to the design of free form diagrid structure  

E-Print Network [OSTI]

In order to satisfy the ever-increasing complexity of modem architectural design of tall towers, diagrid structural systems are becoming more relevant. To deal with irregular geometries, more sophisticated computational ...

Sundberg, Jessica Nicole

2009-01-01T23:59:59.000Z

127

Model-based design of an ultra high performance concrete support structure for a wind turbine  

E-Print Network [OSTI]

A support tower is the main structure which would support rotor, power transmission and control systems, and elevates the rotating blades above the earth boundary layer. A successful design should ensure safe, efficient ...

Wang, Zheng, M. Eng. Massachusetts Institute of Technology

2007-01-01T23:59:59.000Z

128

Development of load and resistance factor design for FRP strengthening of reinforced concrete structures  

E-Print Network [OSTI]

Design for FRP Strengthening of Reinforced Concrete. In 7 thFRP) Reinforcement for Concrete Structure; Shield, C.K. ,G.C. Fatigue Performance of Concrete Beams Strengthened with

Atadero, Rebecca Anne

2006-01-01T23:59:59.000Z

129

Design and fabrication of micro- and nano- dielectric structures for imaging and focusing at optical frequencies  

E-Print Network [OSTI]

In this thesis work, design and fabrication of micro- and nano-photonic structures both in the diffraction regime and sub-wavelength regime have been investigated. In the diffraction regime, two types of optical systems ...

Takahashi, Satoshi, Ph. D. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

130

Design of Wireless Sensor Units with Embedded Statistical Time-Series Damage Detection Algorithms for Structural Health Monitoring  

E-Print Network [OSTI]

A low-cost wireless sensing unit is designed and fabricated for deployment in a structural monitoring progresses towards performance-based design principles, structural monitoring systems can provide extensive

Stanford University

131

Cold Vacuum Drying facility civil structural system design description (SYS 06)  

SciTech Connect (OSTI)

This document describes the Cold Vacuum Drying (CVD) Facility civil - structural system. This system consists of the facility structure, including the administrative and process areas. The system's primary purpose is to provide for a facility to house the CVD process and personnel and to provide a tertiary level of containment. The document provides a description of the facility and demonstrates how the design meets the various requirements imposed by the safety analysis report and the design requirements document.

PITKOFF, C.C.

1999-07-06T23:59:59.000Z

132

Cathodic protection system design for steel pilings of a wharf structure  

SciTech Connect (OSTI)

Corrosion of steel pilings in sea and brackish water is mostly due to the establishment of localized corrosion cells and the effects of the tidal changes. The most frequently used corrosion protection systems are coatings and/or cathodic protection. These protective systems when properly designed, installed and operated are very effective in preventing corrosion problems. The design of a cathodic protection system, in order to be effective and reliable, must take into consideration all technical design criteria, the type of materials used, the geometric shape of the structure, environmental conditions, site restrictions, and any outside interferences. These design considerations, as well as the use of design data and an overall design methodology for a cathodic protection system for pipe and sheet piling used in a wharf structure, are discussed in this paper.

Nikolakakos, S.

1999-07-01T23:59:59.000Z

133

The design and manufacture of a novel thin-film microelectronic vacuum diode structure  

E-Print Network [OSTI]

as an alternative to the silicon transistor. To date, these approaches have been plagued with design-related problems that have retarded their acceptance as a viable technology. This work proposes a new vacuum diode structure, novel in its design. It can...

Mason, Mark E.

2012-06-07T23:59:59.000Z

134

Hierarchically Structured Materials for Lithium Batteries. | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun with Bigfront.jpgcommunity200cellHeatExperiment.Theoretical

135

Structural Design of a Horizontal-Axis Tidal Current Turbine Composite Blade  

SciTech Connect (OSTI)

This paper describes the structural design of a tidal composite blade. The structural design is preceded by two steps: hydrodynamic design and determination of extreme loads. The hydrodynamic design provides the chord and twist distributions along the blade length that result in optimal performance of the tidal turbine over its lifetime. The extreme loads, i.e. the extreme flap and edgewise loads that the blade would likely encounter over its lifetime, are associated with extreme tidal flow conditions and are obtained using a computational fluid dynamics (CFD) software. Given the blade external shape and the extreme loads, we use a laminate-theory-based structural design to determine the optimal layout of composite laminas such that the ultimate-strength and buckling-resistance criteria are satisfied at all points in the blade. The structural design approach allows for arbitrary specification of the chord, twist, and airfoil geometry along the blade and an arbitrary number of shear webs. In addition, certain fabrication criteria are imposed, for example, each composite laminate must be an integral multiple of its constituent ply thickness. In the present effort, the structural design uses only static extreme loads; dynamic-loads-based fatigue design will be addressed in the future. Following the blade design, we compute the distributed structural properties, i.e. flap stiffness, edgewise stiffness, torsion stiffness, mass, moments of inertia, elastic-axis offset, and center-of-mass offset along the blade. Such properties are required by hydro-elastic codes to model the tidal current turbine and to perform modal, stability, loads, and response analyses.

Bir, G. S.; Lawson, M. J.; Li, Y.

2011-10-01T23:59:59.000Z

136

Portals to an Architecture: Design of a temporary structure with paper tube arches Steven J. Preston  

E-Print Network [OSTI]

2011 Keywords: Architecture Structure Engineering Sculpture Sustainability Paper tubes a b s t r a cPortals to an Architecture: Design of a temporary structure with paper tube arches Steven J t Sustainable recyclable paper and composite materials can be ideal choices for the construction of tempo- rary

Bank, Lawrence C.

137

Hierarchical Assembly of Inorganic Nanostructure Building Blocks...  

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

Nanostructure Building Blocks to Octahedral Superstructures – A True Template-Free Self Hierarchical Assembly of Inorganic Nanostructure Building Blocks to Octahedral...

138

Key technological issues in LMFBR high-temperature structural design - the US perspective  

SciTech Connect (OSTI)

The purpose of this paper is: (1) to review the key technological issues in LMFBR high-temperature structural design, particularly as they relate to cost reduction; and (2) to provide an overview of activities sponsored by the US Department of Energy to resolve the issues and to establish stable, standardized, and defensible structural design methods and criteria. Specific areas of discussion include: weldments, structural validation tests, simplified design analysis procedures, design procedures for piping, validation of the methodology for notch-like geometries, improved life assessment procedures, thermal striping, extension of the methodology to new materials, and ASME high-temperature Code reform needs. The perceived problems and needs in each area are discussed, and the current status of related US activities is given.

Corum, J.M.

1984-01-01T23:59:59.000Z

139

Hierarchical multi-touch selection techniques for collaborative geospatial analysis  

E-Print Network [OSTI]

Hierarchical multi-touch selection techniques for collaborative geospatial analysis Thomas and military use. Keywords: Multi-touch, hierarchical selection, geospatial analysis, GIS, collaborative selection of complex regions-of-interest within a hierarchical geospatial environment, as well as methods

Wartell, Zachary

140

Hierarchically Porous Graphene as a Lithium-Air Battery Electrode...  

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

Hierarchically Porous Graphene as a Lithium-Air Battery Electrode. Hierarchically Porous Graphene as a Lithium-Air Battery Electrode. Abstract: Functionalized graphene sheets (FGS)...

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


141

Vehicle Technologies Office Merit Review 2014: Hierarchical Assembly...  

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

Hierarchical Assembly of InorganicOrganic Hybrid Si Negative Electrodes Vehicle Technologies Office Merit Review 2014: Hierarchical Assembly of InorganicOrganic Hybrid Si...

142

Jerarca: Efficient Analysis of Complex Networks Using Hierarchical Clustering  

E-Print Network [OSTI]

Background: How to extract useful information from complex biological networks is a major goal in many fields, especially in genomics and proteomics. We have shown in several works that iterative hierarchical clustering, as implemented in the UVCluster program, is a powerful tool to analyze many of those networks. However, the amount of computation time required to perform UVCluster analyses imposed significant limitations to its use. Methodology/Principal Findings: We describe the suite Jerarca, designed to efficiently convert networks of interacting units into dendrograms by means of iterative hierarchical clustering. Jerarca is divided into three main sections. First, weighted distances among units are computed using up to three different approaches: a more efficient version of UVCluster and two new, related algorithms called RCluster and SCluster. Second, Jerarca builds dendrograms based on those distances, using well-known phylogenetic algorithms, such as UPGMA or Neighbor-Joining. Finally, Jerarca provi...

Aldecoa, Rodrigo; 10.1371/journal.pone.0011585

2012-01-01T23:59:59.000Z

143

Hierarchical Linear Discriminant Analysis for Beamforming  

E-Print Network [OSTI]

model of h-LDA by relating it to the two-way multivariate analysis of variance (MANOVA), which fits well dimension reduction, hierarchical linear discriminant analysis (h-LDA) to a well-known spatial localization1 Hierarchical Linear Discriminant Analysis for Beamforming Jaegul Choo , Barry L. Drake

Park, Haesun

144

Molecular Coordination of Hierarchical Self-Assembly  

E-Print Network [OSTI]

Molecular Coordination of Hierarchical Self-Assembly Technical Report UT-CS-10-662 Bruce J. Mac to self-assemble into multiscale complex hierarchical systems. Keywords: algorithmic assembly, embodied, nano communication, nanofabrication, nanotechnology, Moore's Law, self-assembly, self-organization. 1

MacLennan, Bruce

145

Preliminary structural design conceptualization for composite rotor for verdant power water current turbine  

SciTech Connect (OSTI)

Sandia National Laboratories (SNL) and Verdant Power Inc. (VPI) have partnered under a Cooperative Research and Development Agreement (CRADA) to develop a new kinetic hydropower rotor. The rotor features an improved hydrodynamic and structural design which features state-of-the-art technology developed for the wind industry. The new rotor will have higher energy capture, increased system reliability, and reduction of overall cost of energy. This project was divided into six tasks: (1) Composite Rotor Project Planning and Design Specification; (2) Baseline Fatigue Testing and Failure analysis; (3) Develop Blade/Rotor Performance Model; (4) Hydrofoil Survey and Selection; (5) FEM Structural Design; and (6) Develop Candidate Rotor Designs and Prepare Final Report.

Paquette, J. A.

2012-03-01T23:59:59.000Z

146

Modulation-Aware Energy Balancing in Hierarchical Wireless Sensor Networks1  

E-Print Network [OSTI]

Modulation-Aware Energy Balancing in Hierarchical Wireless Sensor Networks1 Maryam Soltan, Inkwon becoming critical design concerns, a significant amount of research has focused on energy-aware design physical layer characteristics at the system deployment stage and analyzing the effects on spatial energy

Pedram, Massoud

147

Structural performance of the first SSC (Superconducting Super Collider) Design B dipole magnet  

SciTech Connect (OSTI)

The first Design B Superconducting Super Collider (SSC) dipole magnet has been successfully tested. This magnet was heavily instrumented with temperature and strain gage sensors in order to evaluate its adherence to design constraints and design calculations. The instrumentation and associated data acquisition system allowed monitoring of the magnet during cooldown, warmup, and quench testing. This paper will focus on the results obtained from structural measurements on the suspension system during normal and rapid cooldowns and during quench studies at full magnet current. 4 refs., 9 figs.

Nicol, T.H.

1989-09-01T23:59:59.000Z

148

The hierarchical properties of contact networks in granular packings  

E-Print Network [OSTI]

The topological structure resulting from the network of contacts between grains (contact network) is studied for very large samples of disorderly-packed monosized spheres with densities ranging from 0.58 to 0.64. The hierarchical organization of such a structure is studied by means of a topological map which starts from a given sphere and moves outwards in concentric shells through the contact network. We find that the topological density of disordered sphere packing is larger than the topological density of equivalent lattice sphere packings.

T. Aste; T. J. Senden

2005-04-14T23:59:59.000Z

149

Impact of Not Fully Addressing Cross-Classified Multilevel Structure in Testing Measurement Invariance and Conducting Multilevel Mixture Modeling within Structural Equation Modeling Framework  

E-Print Network [OSTI]

data as hierarchical structure data in two different analytical settings under the structural equation modeling (SEM) framework. Study 1 evaluated the performance of conventional multilevel confirmatory factor analysis (MCFA) which assumes hierarchical...

Im, Myung

2014-07-25T23:59:59.000Z

150

Adaptive Sampling in Hierarchical Simulation  

SciTech Connect (OSTI)

We propose an adaptive sampling methodology for hierarchical multi-scale simulation. The method utilizes a moving kriging interpolation to significantly reduce the number of evaluations of finer-scale response functions to provide essential constitutive information to a coarser-scale simulation model. The underlying interpolation scheme is unstructured and adaptive to handle the transient nature of a simulation. To handle the dynamic construction and searching of a potentially large set of finer-scale response data, we employ a dynamic metric tree database. We study the performance of our adaptive sampling methodology for a two-level multi-scale model involving a coarse-scale finite element simulation and a finer-scale crystal plasticity based constitutive law.

Knap, J; Barton, N R; Hornung, R D; Arsenlis, A; Becker, R; Jefferson, D R

2007-07-09T23:59:59.000Z

151

Comparison of Protein Active Site Structures for Functional Annotation of Proteins and Drug Design  

E-Print Network [OSTI]

of various genomics efforts has been a vast growth in putative protein sequences that lack any experimental there are numerous examples of proteins with similar folds that lack any significant sequence homology.8Comparison of Protein Active Site Structures for Functional Annotation of Proteins and Drug Design

Powers, Robert

152

Harnessing fluid-structure interactions to design self-regulating acoustic metamaterials  

E-Print Network [OSTI]

on their mechanical properties and the speed of the incident fluid flow. Therefore, a flow impinging on the systemHarnessing fluid-structure interactions to design self-regulating acoustic metamaterials Filippo defined by the properties of the airfoils and the speed on the incident fluid. The proposed concept

153

Structural design considerations for stretched-membrane heliostat reflector modules with stability and initial imperfection considerations  

SciTech Connect (OSTI)

This report extends the work of several previous reports that present the background leading to the development of stretched-membrane modules and analysis methods to study the structural response of the stretched-membrane module. Specifically, this report presents and discusses the design implications based on our analysis of single- or double-membrane concepts, and the amplification of initial imperfections and deflections caused by loading, which results from stability considerations. In this document, we present analysis results for both single- and double-membrane concepts corresponding to a range of design and loading conditions. Further, we show that stretched-membrane/frame combinations respond quite differently to external loads than can be inferred by studying the decoupled frame and membrane independently. Thus the coupled membrane/frame problem should be considered to assure an accurate description of its response. For idealized configurations and loadings, we discuss the relative merits of various design features for both of these designs. In addition, we studied the structural stability (i.e., the tendency of structural deformation to grow with little increase in applied load) of the tensioned-membrane, compressed-frame combination. Moreover, we demonstrate how stability considerations are important in determining the amplification of both initial displacement imperfection and the deformations caused by wind and weight loading on the structure.

Murphy, L.M.; Simms, D.; Sallis, D.V.

1986-10-01T23:59:59.000Z

154

Generic Design Methodology for Symmetrically Coupled Line Structures Sarmad Al-Taei, Phil Lane, George Passiopoulos  

E-Print Network [OSTI]

Generic Design Methodology for Symmetrically Coupled Line Structures Sarmad Al-Taei, Phil Lane, Surrey, GU15 3DT Abstract: High performance miniaturised and cost effective passive components are needed systems. In recent years there has been increasing interest in utilising passive multi-layer IC

Haddadi, Hamed

155

Magnet Design of a Prototype Structure for the X-ray FELs at TESLA  

E-Print Network [OSTI]

Magnet Design of a Prototype Structure for the X-ray FELs at TESLA M. Tischer, J. Pflüger Hamburger Synchrotronstrahlungslabor HASYLAB, DESY, Notkestr. 85, D-22603 Hamburg, Germany Abstract XFEL undulators for the TESLA device is suggested so that both field integrals are trimmed close to zero for all gaps. TESLA­FEL 2000

156

Control structure design for stabilizing unstable gas-lift oil wells  

E-Print Network [OSTI]

Control structure design for stabilizing unstable gas-lift oil wells Esmaeil Jahanshahi, Sigurd valve is the recommended solution to prevent casing-heading instability in gas-lifted oil wells. Focus to be effective to stabilize this system. Keywords: Oil production, two-phase flow, gas-lift, controllability, H

Skogestad, Sigurd

157

Quantum structure emerging from the transformation design of the Dirac equation  

SciTech Connect (OSTI)

It is shown that a quantum structure can be created by a set of chosen constraint conditions that emerge from the transformation design of the Dirac equation in general relativity. As an explanation, the constraints that cause novel bound states with the quantization rule of a 2D Coulomb system are presented. The discussion in this paper provides a systematic way to look for constraints that generate a required quantization rule. -- Highlights: •We perform the transformation design of space and time for spin-1/2 matter waves. •A quantum rule could naturally emerge as constraints imposed on the Dirac equation itself. •New fermion states share the quantum spectrum of a 2D Coulomb system. •Transformation design uncovers a new exact solvable model. •A quantum spectrum can be created by a geometric structure.

Lin, De-Hone, E-mail: dhlin@mail.nsysu.edu.tw

2014-06-15T23:59:59.000Z

158

The design, installation, and performance of a berm-supported exploration structure in the Beaufort Sea  

SciTech Connect (OSTI)

The design, installation, and performance of a berm-supported exploration structure in a dynamic ice environment is presented. Details are provided on design considerations which include horizontal ice loads, wave loads, seismic considerations, foundation characteristics and extreme temperatures. The development of specifications and installation techniques to account for these design concerns is presented. A case history is presented which includes a discussion of on-site modifications to the idealized placement technique, which were necessitated by extreme ice conditions. The success of this modified placement technique is confirmed through a review of the unit performance during the drilling season, and the response of the structure to dynamic ice and drilling-related activity is examined.

Hewitt, K.J.; Berzing, W.E.; Fitzpatrick, J.P.; Hogeboom, H.G.

1985-06-01T23:59:59.000Z

159

Adjoint design sensitivity analysis of reduced atomic systems using generalized Langevin equation for lattice structures  

SciTech Connect (OSTI)

An efficient adjoint design sensitivity analysis method is developed for reduced atomic systems. A reduced atomic system and the adjoint system are constructed in a locally confined region, utilizing generalized Langevin equation (GLE) for periodic lattice structures. Due to the translational symmetry of lattice structures, the size of time history kernel function that accounts for the boundary effects of the reduced atomic systems could be reduced to a single atom’s degrees of freedom. For the problems of highly nonlinear design variables, the finite difference method is impractical for its inefficiency and inaccuracy. However, the adjoint method is very efficient regardless of the number of design variables since one additional time integration is required for the adjoint GLE. Through numerical examples, the derived adjoint sensitivity turns out to be accurate and efficient through the comparison with finite difference sensitivity.

Kim, Min-Geun; Jang, Hong-Lae [National Creative Research Initiatives Center for Isogeometric Optimal Design and Department of Naval Architecture and Ocean Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-744 (Korea, Republic of)] [National Creative Research Initiatives Center for Isogeometric Optimal Design and Department of Naval Architecture and Ocean Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-744 (Korea, Republic of); Cho, Seonho, E-mail: secho@snu.ac.kr [National Creative Research Initiatives Center for Isogeometric Optimal Design and Department of Naval Architecture and Ocean Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-744 (Korea, Republic of)] [National Creative Research Initiatives Center for Isogeometric Optimal Design and Department of Naval Architecture and Ocean Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-744 (Korea, Republic of)

2013-05-01T23:59:59.000Z

160

LMA MSW Solution from the Inverted Hierarchical Model of Neutrinos  

E-Print Network [OSTI]

We examine whether the inverted hierarchical model of neutrinos is compatible with the explanation of the large mixing angles (LMA)MSW solution of the solar neutrino problem. The left-handed Majorana neutrino mass matrix for the inverted hierarchical model, is generated through the seesaw mechanism using the diagonal form of the Dirac neutrino mass matrix and the non-diagonal texture of the right-handed Majorana mass matrix. In a model independent way, we construct a specific form of the charged lepton mass matrix having a special structure in 1-2 block, which contribution to the leptonic mixing (MNS) matrix leads to the predictions $\\sin^{2}2\\theta_{12}=0.8517$, $\\sin^{2}2\\theta_{23}=0.9494$, and $|V_{e3}|=0.159$ at the unification scale. These predictions are found to be consistent with the LMA MSW solution of the solar neutrino problem. The inverted hierarchical model is also found to be stable against the quantum radiative corrections in the MSSM. A numerical analysis of the renormalisation group equations (RGEs) in the MSSM shows a mild decrease of the mixing angles with the decrease of energy scale and the corresponding values of the neutrino mixings at the top-quark mass scale are found as $\\sin^{2}2\\theta_{12}=0.8472$, $\\sin^{2}2\\theta_{23}=0.9399$, $|V_{e3}|=0.1509$ respectively.

Mahadev Patgiri; N. Nimai Singh

2001-12-08T23:59:59.000Z

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


161

Design of the support structure, drive pedestal, and controls for a solar concentrator  

SciTech Connect (OSTI)

The glass/metal McDonnell-Douglas dish is the state-of-the-art of parabolic dish concentrators. Because of the perceived high production cost of this concentrator, the Department of Energy's Solar Thermal Program is developing stretch-membrane technology for large (75 kWt) solar concentrators for integration with receivers and engines in 25 kWe dish-Stirling systems. The objective of this development effort is to reduce the cost of the concentrator while maintaining the high levels of performance characteristic of glass-metal dishes. Under contract to Sandia National Laboratories, Science Applications International Corporation, Solar Kinetics Inc. and WG Associates are developing a faceted stretched-membrane heliostat technology. This design will result in a low-risk, near-term concentrator for dish-Stirling systems. WG Associates has designed the support structure, drives and tracking controls for this dish. The structure is configured to support 12 stretched-membrane, 3.5-meter diameter facets in a shaped dish configuration. The dish design is sized to power a dish-Stirling system capable of producing 25 kW (electric). In the design of the structure, trade-off studies were conducted to determine the best'' facet arrangement, dish contour, dish focal length, tracking control and walk-off protection. As part of the design, in-depth analyses were performed to evaluate pointing accuracy, compliance with AISC steel design codes, and the economics of fabrication and installation. Detailed fabrication and installation drawings were produced, and initial production cost estimates for the dish were developed. These issues, and the final dish design, are presented in this report. 7 refs., 33 figs., 18 tabs.

Goldberg, V.R.; Ford, J.L.; Anderson, A.E. (WG Associates, Dallas, TX (United States))

1991-08-01T23:59:59.000Z

162

Rational design of self-assembly pathways for complex multicomponent structures  

E-Print Network [OSTI]

The field of complex self-assembly is moving toward the design of multi-particle structures consisting of thousands of distinct building blocks. To exploit the potential benefits of structures with such `addressable complexity,' we need to understand the factors that optimize the yield and the kinetics of self-assembly. Here we use a simple theoretical method to explain the key features responsible for the unexpected success of DNA-brick experiments, which are currently the only demonstration of reliable self-assembly with such a large number of components. Simulations confirm that our theory accurately predicts the narrow temperature window in which error-free assembly can occur. Even more strikingly, our theory predicts that correct assembly of the complete structure may require a time-dependent experimental protocol. Furthermore, we predict that low coordination numbers result in non-classical nucleation behavior, which we find to be essential for achieving optimal nucleation kinetics under mild growth conditions. We also show that, rather surprisingly, the use of heterogeneous bond energies improves the nucleation kinetics and in fact appears to be necessary for assembling certain intricate three-dimensional structures. This observation makes it possible to sculpt nucleation pathways by tuning the distribution of interaction strengths. These insights not only suggest how to improve the design of structures based on DNA bricks, but also point the way toward the creation of a much wider class of chemical or colloidal structures with addressable complexity.

William M. Jacobs; Aleks Reinhardt; Daan Frenkel

2015-02-04T23:59:59.000Z

163

Hierarchical strategy for rapid finite element analysis  

E-Print Network [OSTI]

A new methodology is introduced where the natural hierarchical character of model descriptions and simulation results are exploited to expedite analysis of problems. The philosophy and the different concepts involved are illustrated by implementing...

Varghese, Julian

2004-09-30T23:59:59.000Z

164

Enhancing Composition Window of Bicontinuous Structures by Designed Polydispersity Distribution of ABA Triblock Copolymers  

E-Print Network [OSTI]

The phase behavior of polydisperse ABA triblock copolymers is studied using dissipative particle dynamics simulations, focusing on the emergence and property of bicontinuous structures. Bicontinuous structures are characterized by two separate, intermeshed nanoscopic domains extending throughout the material. The connectivity of polymeric bicontinuous structures makes them highly desirable for many applications. For conventional monodisperse diblock and triblock copolymers, regular bicontinuous structures (i.e., gyroid and Fddd) can be formed over a narrow composition window of ~3%. We demonstrate that the composition window for the formation of bicontinuous structures can be regulated by designed polydispersity distributions of ABA triblock copolymers. In particular, introducing polydispersity in both A and B blocks can lead to a significant enhancement of the composition window of bicontinuous structures with both continuous A and B domains. The mechanism of the bicontinuous structure enhancement is elucidated from the distribution of the long and short blocks. Furthermore, it is shown that the polymeric bicontinuous structures from polydisperse ABA triblock copolymers possess good continuity throughout the sample, making them ideal candidates for advanced applications.

Yue Li; Hu-Jun Qian; Zhong-Yuan Lu; An-Chang Shi

2013-10-22T23:59:59.000Z

165

Durability-Based Design Guide for an Automotive Structural Composite: Part 2. Background Data and Models  

SciTech Connect (OSTI)

This background report is a companion to the document entitled ''Durability-Based Design Criteria for an Automotive Structural Composite: Part 1. Design Rules'' (ORNL-6930). The rules and the supporting material characterization and modeling efforts described here are the result of a U.S. Department of Energy Advanced Automotive Materials project entitled ''Durability of Lightweight Composite Structures.'' The overall goal of the project is to develop experimentally based, durability-driven design guidelines for automotive structural composites. The project is closely coordinated with the Automotive Composites Consortium (ACC). The initial reference material addressed by the rules and this background report was chosen and supplied by ACC. The material is a structural reaction injection-molded isocyanurate (urethane), reinforced with continuous-strand, swirl-mat, E-glass fibers. This report consists of 16 position papers, each summarizing the observations and results of a key area of investigation carried out to provide the basis for the durability-based design guide. The durability issues addressed include the effects of cyclic and sustained loadings, temperature, automotive fluids, vibrations, and low-energy impacts (e.g., tool drops and roadway kickups) on deformation, strength, and stiffness. The position papers cover these durability issues. Topics include (1) tensile, compressive, shear, and flexural properties; (2) creep and creep rupture; (3) cyclic fatigue; (4) the effects of temperature, environment, and prior loadings; (5) a multiaxial strength criterion; (6) impact damage and damage tolerance design; (7) stress concentrations; (8) a damage-based predictive model for time-dependent deformations; (9) confirmatory subscale component tests; and (10) damage development and growth observations.

Corum, J.M. [ORNL; Battiste, R.L. [ORNL; Brinkman, C.R. [ORNL; Ren, W. [ORNL; Ruggles, M.B. [ORNL; Weitsman, Y.J. [ORNL; Yahr, G.T. [ORNL

1998-02-01T23:59:59.000Z

166

Design, Construction and Test of Cryogen-Free HTS Coil Structure  

SciTech Connect (OSTI)

This paper will describe design, construction and test results of a cryo-mechanical structure to study coils made with the second generation High Temperature Superconductor (HTS) for the Facility for Rare Isotope Beams (FRIB). A magnet comprised of HTS coils mounted in a vacuum vessel and conduction-cooled with Gifford-McMahon cycle cryocoolers is used to develop and refine design and construction techniques. The study of these techniques and their effect on operations provides a better understanding of the use of cryogen free magnets in future accelerator projects. A cryogen-free, superconducting HTS magnet possesses certain operational advantages over cryogenically cooled, low temperature superconducting magnets.

Hocker, H.; Anerella, M.; Gupta, R.; Plate, S.; Sampson, W.; Schmalzle, J.; Shiroyanagi, Y.

2011-03-28T23:59:59.000Z

167

Impedance-based study of capacitive porous carbon electrodes with hierarchical and bimodal porosity  

E-Print Network [OSTI]

hierarchical and bimodal supercapacitor electrodes. First detailed characterization of hierarchical carbon Supercapacitor Capacitive deionization Electrochemical impedance spectroscopy Hierarchical carbon a b s t r a c

Santiago, Juan G.

168

Hierarchical Assemblies of Block-Copolymer-Based Supramolecules in Thin Films  

SciTech Connect (OSTI)

The hierarchical assemblies of supramolecules, which consisted of polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) with 3-pentadecylphenol (PDP) hydrogen-bonded to the 4VP, were investigated in thin films after solvent annealing in a chloroform atmosphere. The synergistic coassembly of PS-b-P4VP and PDP was utilized to generate oriented hierarchical structures in thin films. Hierarchical assemblies, including lamellae-within-lamellae and cylinders-within-lamellae, were simultaneously ordered and oriented from a few to several tens of nanometers over macroscopic length scales. The macroscopic orientation of supramolecular assembly depends on the P4VP(PDP) fraction and can be tailored by varying the PDP to P4VP ratio without interfering with the supramolecular morphologies. The lamellar and cylindrical microdomains, with a periodicity of {approx}40 nm, could be oriented normal to the surface, while the assembly of comb blocks, P4VP(PDP), with a periodicity of {approx}4 nm, were oriented parallel to the surface. Furthermore, using one PS-b-P4VP copolymer, thin films with different hierarchical structures, i.e., lamellae-within-lamellae and cylinders-within-lamellae, were obtained by varying the ratio of PDP to 4VP units. The concepts described in these studies can be potentially applied to other BCP-based supramolecular thin films, thus creating an avenue to functional, hierarchically ordered thin films.

Tung, Shih-Huang; Kalarickal, Nisha C.; Mays, Jimmy W.; Xu, Ting (UCB); (ORNL)

2009-09-08T23:59:59.000Z

169

Designing stable finite state machine behaviors using phase plane analysis and variable structure control  

SciTech Connect (OSTI)

This paper discusses how phase plane analysis can be used to describe the overall behavior of single and multiple autonomous robotic vehicles with finite state machine rules. The importance of this result is that one can begin to design provably asymptotically stable group behaviors from a set of simple control laws and appropriate switching points with decentralized variable structure control. The ability to prove asymptotically stable group behavior is especially important for applications such as locating military targets or land mines.

Feddema, J.T.; Robinett, R.D.; Driessen, B.J.

1998-03-10T23:59:59.000Z

170

High quantum efficiency photocathode simulation for the investigation of novel structured designs  

SciTech Connect (OSTI)

A computer model in CST Studio Suite has been developed to evaluate several novel geometrically enhanced photocathode designs. This work was aimed at identifying a structure that would increase the total electron yield by a factor of two or greater in the 1–30 keV range. The modeling software was used to simulate the electric field and generate particle tracking for several potential structures. The final photocathode structure has been tailored to meet a set of detector performance requirements, namely, a spatial resolution of <40 ?m and a temporal spread of 1–10 ps. We present the details of the geometrically enhanced photocathode model and resulting static field and electron emission characteristics.

Opachich, Y. P., E-mail: opachiyp@nv.doe.gov; Ross, P. W.; Huffman, E.; Koch, J. A. [National Security Technologies LLC, Livermore, California 94550 (United States); MacPhee, A. G.; Nagel, S. R.; Bell, P. M.; Bradley, D. K.; Landen, O. L. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); Hilsabeck, T. J. [General Atomics, San Diego, California 92121 (United States)

2014-11-15T23:59:59.000Z

171

Categories and Functional Units: An Infinite Hierarchical Model for Brain Activations  

E-Print Network [OSTI]

Categories and Functional Units: An Infinite Hierarchical Model for Brain Activations Danial present a model that describes the structure in the responses of different brain areas to a set of stimuli encodes the relationship between brain activations and fMRI time courses. A variational inference

Golland, Polina

172

Managing Attack Graph Complexity Through Visual Hierarchical Aggregation  

E-Print Network [OSTI]

Managing Attack Graph Complexity Through Visual Hierarchical Aggregation Steven Noel Center a framework for managing network attack graph complexity through interactive visualization, which includes hierarchical aggregation of graph elements. Aggregation collapses non-overlapping subgraphs of the attack graph

Noel, Steven

173

Hierarchical Bayesian Models for Predicting The Spread of Ecological Processes  

E-Print Network [OSTI]

Hierarchical Bayesian Models for Predicting The Spread of Ecological Processes Christopher K. Wikle Department of Statistics, University of Missouri To appear: Ecology June 10, 2002 Key Words: Bayesian, Diffusion, Forecast, Hierarchical, House Finch, Invasive, Malthu- sian, State Space, Uncertainty Abstract

174

Hierarchical Control Scheme for Voltage Unbalance Compensation in Islanded Microgrids  

E-Print Network [OSTI]

Hierarchical Control Scheme for Voltage Unbalance Compensation in Islanded Microgrids Mehdi@et.aau.dk Abstract-- The concept of microgrid hierarchical control is presented, recently. In this paper, a hierarchical scheme which includes primary and secondary control levels is proposed for islanded microgrids

Vasquez, Juan Carlos

175

ABSTRACT: Modern seismic codes recommend the design of ductile structures able to absorb seismic energy through high plastic deformation. Since seismic ductile design relies on an accurate control of  

E-Print Network [OSTI]

1 ABSTRACT: Modern seismic codes recommend the design of ductile structures able to absorb seismic energy through high plastic deformation. Since seismic ductile design relies on an accurate control-concrete composite structures; Material properties variability; Seismic design; capacity design. 1 GENERAL CONTEXT

Boyer, Edmond

176

Static properties and multiaxial strength criterion for design of composite automotive structures  

SciTech Connect (OSTI)

The Durability of Lightweight Composite Structures Project was established at Oak Ridge National Laboratory (ORNL) by the US Department of Energy to provide the experimentally-based, durability-driven design guidelines necessary to assure long-term structural integrity of automotive composite components. The initial focus of the ORNL Durability Project was on one representative reference material -- an isocyanurate (polyurethane) reinforced with continuous strand, swirl-mat E-glass. The present paper describes tensile, compressive, flexure, and shear testing and results for the reference composite. Behavioral trends and proportional limit are established for both tension and compression. Damage development due to tensile loading, strain rate effects, and effects of temperature are discussed. Furthermore, effects on static properties of various fluids, including water at room and elevated temperatures, salt water, antifreeze, windshield washer fluid, used motor oil, battery acid, gasoline, and brake fluid, were investigated. Effects of prior loading were evaluated as well. Finally, the effect of multiaxial loading on strength was determined, and the maximum shear strength criterion was identified for design.

Ruggles, M.B.; Yahr, G.T.; Battiste, R.L.

1998-11-01T23:59:59.000Z

177

Designing, implementing and monitoring social impact mitigation strategies: Lessons from Forest Industry Structural Adjustment Packages  

SciTech Connect (OSTI)

Social impact mitigation strategies are implemented by the proponents of policies and projects with the intent of reducing the negative, and increasing the positive social impacts of their activities, and facilitating the achievement of policy/project goals. Evaluation of mitigation strategies is critical to improving their future success and cost-effectiveness. This paper evaluates two Forest Industry Structural Adjustment Packages (FISAP) implemented in Australia in the 1990s to 2000s as part of broader policy changes that reduced access to timber from publicly owned native forests. It assesses the effectiveness of the structure, design, implementation and monitoring of the FISAPs, and highlights the interactions between these four elements and their influence on social impacts. The two FISAPs were found to be effective in terms of reducing negative impacts, encouraging positive impacts and contributing towards policy goals, although they did not mitigate negative impacts in all cases, and sometimes interacted with external factors and additional policy changes to contribute to significant short and long term negative impacts. -- Highlights: ? Mitigation strategies aim to reduce negative and enhance positive social impacts ? Mitigation strategy design, implementation, and monitoring are critical to success ? Effective mitigation enhanced the capacity of recipients to respond to change ? Mitigation strategies influenced multiple interacting positive and negative impacts ? Success required good communication, transparency, support, resources and timing.

Loxton, Edwina A., E-mail: Edwina.Loxton@anu.edu.au [Fenner School of Environment and Society, The Australian National University, Canberra, 0200 (Australia); Schirmer, Jacki, E-mail: Jacki.Schirmer@canberra.edu.au [Fenner School of Environment and Society, The Australian National University, Canberra, 0200 (Australia) [Fenner School of Environment and Society, The Australian National University, Canberra, 0200 (Australia); Cooperative Research Centre for Forestry, Hobart, 7001 (Australia); Kanowski, Peter, E-mail: P.Kanowski@cgiar.org [Fenner School of Environment and Society, The Australian National University, Canberra, 0200 (Australia) [Fenner School of Environment and Society, The Australian National University, Canberra, 0200 (Australia); Cooperative Research Centre for Forestry, Hobart, 7001 (Australia)

2013-09-15T23:59:59.000Z

178

Innovative Structural and Joining Concepts for Lightweight Design of Heavy Vehicle Systems  

SciTech Connect (OSTI)

Recent advances in the area of Metal Matrix Composites (MMC's) have brought these materials to a maturity stage where the technology is ready for transition to large-volume production and commercialization. The new materials seem to allow the fabrication of higher quality parts at less than 50 percent of the weight as compared to steel, especially when they are selectively reinforced with carbon, silicon carbide, or aluminum oxide fibers. Most of the developments in the MMC materials have been spurred, mainly by applications that require high structural performance at elevated temperatures, the heavy vehicle industry could also benefit from this emerging technology. Increasing requirements of weight savings and extended durability are the main drivers for potential insertion of MMC technology into the heavy vehicle market. Critical elements of a typical tractor-trailer combination, such as highly loaded sections of the structure, engine components, brakes, suspensions, joints and bearings could be improved through judicious use of MMC materials. Such an outcome would promote the DOE's programmatic objectives of increasing the fuel efficiency of heavy vehicles and reducing their life cycle costs and pollution levels. However, significant technical and economical barriers are likely to hinder or even prevent broad applications of MMC materials in heavy vehicles. The tradeoffs between such expected benefits (lower weights and longer durability) and penalties (higher costs, brittle behavior, and difficult to machine) must be thoroughly investigated both from the performance and cost viewpoints, before the transfer of MMC technology to heavy vehicle systems can be properly assessed and implemented. MMC materials are considered to form one element of the comprehensive, multi-faceted strategy pursued by the High Strength/Weight Reduction (HS/WR) Materials program of the U.S. Department of Energy (DOE) for structural weight savings and quality enhancements in heavy vehicles. The research work planed for the first year of this project (June 1, 2003 through May 30, 2004) focused on a theoretical investigation of weight benefits and structural performance tradeoffs associated with the design, fabrication, and joining of MMC components for heavy-duty vehicles. This early research work conducted at West Virginia University yielded the development of integrated material-structural models that predicted marginal benefits and significant barriers to MMC applications in heavy trailers. The results also indicated that potential applications of MMC materials in heavy vehicles are limited to components identified as critical for either loadings or weight savings. Therefore, the scope of the project was expanded in the following year (June 1, 2004 through May 30, 2005) focused on expanding the lightweight material-structural design concepts for heavy vehicles from the component to the system level. Thus, the following objectives were set: (1) Devise and evaluate lightweight structural configurations for heavy vehicles. (2) Study the feasibility of using Metal Matrix Composites (MMC) for critical structural components and joints in heavy vehicles. (3) Develop analysis tools, methods, and validated test data for comparative assessments of innovative design and joining concepts. (4) Develop analytical models and software for durability predictions of typical heavy vehicle components made of particulate MMC or fiber-reinforced composites. This report summarizes the results of the research work conducted during the past two years in this projects.

Jacky C. Prucz; Samir N. Shoukry; Gergis W. William

2005-08-31T23:59:59.000Z

179

The Hierarchical Case-Based Diagnosis  

E-Print Network [OSTI]

In this paper we propose a methodology to aid machine diagnosis based on the Case-Based Reasoning (CBR) techniques, called Hierarchical Case-Based Diagnosis (HCBD). Our method is a resample of the interpretative CBR which tries to interpret a new situation using interpretations of old situations

Nahid Karchenasse; Jean-michel Roger; Francis Sevila

1997-01-01T23:59:59.000Z

180

Metal oxide nanostructures with hierarchical morphology  

DOE Patents [OSTI]

The present invention relates generally to metal oxide materials with varied symmetrical nanostructure morphologies. In particular, the present invention provides metal oxide materials comprising one or more metallic oxides with three-dimensionally ordered nanostructural morphologies, including hierarchical morphologies. The present invention also provides methods for producing such metal oxide materials.

Ren, Zhifeng (Newton, MA); Lao, Jing Yu (Saline, MI); Banerjee, Debasish (Ann Arbor, MI)

2007-11-13T23:59:59.000Z

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


181

Hierarchical Task Analysis of Intrusion Detection Systems  

E-Print Network [OSTI]

.......................... 4 3. Hierarchical Task Analysis ............................ 6 3.1 Network Security Administrator .................... 7 3.2 Functions of Network Security Administrator ....... 7 4. Diagrams on a single or group of persons called Network Security Administrators. They use a wide variety of tools

Blustein, J.

182

Hierarchical Classification of Documents with Error Control  

E-Print Network [OSTI]

Hierarchical Classification of Documents with Error Control Chun-hung Cheng1 , Jian Tang2 , Ada Wai is a function that matches a new object with one of the predefined classes. Document classification is characterized by the large number of attributes involved in the objects (documents). The traditional method

King, Kuo Chin Irwin

183

Hierarchical Classification of Documents with Error Control  

E-Print Network [OSTI]

Hierarchical Classification of Documents with Error Control Chun­hung Cheng 1 , Jian Tang 2 , Ada. Classification is a function that matches a new object with one of the predefined classes. Document classification is characterized by the large number of attributes involved in the objects (documents

Fu, Ada Waichee

184

Critical aspects of hierarchical protein folding  

E-Print Network [OSTI]

We argue that the first order folding transitions of proteins observed at physiological chemical conditions end in a critical point for a given temperature and chemical potential of the surrounding water. We investigate this critical point using a hierarchical Hamiltonian and determine its universality class. This class differs qualitatively from those of other known models.

Alex Hansen; Mogens H. Jensen; Kim Sneppen; Giovanni Zocchi

1998-01-13T23:59:59.000Z

185

Hierarchical Hybrid Power Supply Networks Farinaz Koushanfar  

E-Print Network [OSTI]

Hierarchical Hybrid Power Supply Networks Farinaz Koushanfar Electrical & Computer Engineering management, hybrid power supply, supercapacitors 1. INTRODUCTION AND MOTIVATION Historically, almost all, but the DRAM power consumption is typically around six times lower than SRAM power usage. Depending on the task

186

A Hierarchical Control Architecture for a PEBB-Based ILC Marx Modulator  

SciTech Connect (OSTI)

The idea of building power conversion systems around Power Electronic Building Blocks (PEBBs) was initiated by the U.S. Office of Naval Research in the mid 1990s. A PEBB-based design approach is advantageous in terms of power density, modularity, reliability, and serviceability. It is obvious that this approach has much appeal for pulsed power conversion including the International Linear Collider (ILC) klystron modulator application. A hierarchical control architecture has the inherent capability to support the integration of PEBBs. This has already been successfully demonstrated in a number of industrial applications in the recent past. This paper outlines the underlying concepts of a hierarchical control architecture for a PEBB-based Marx-topology ILC klystron modulator. The control in PEBB-based power conversion systems can be functionally partitioned into (three) hierarchical layers; system layer, application layer, and PEBB layer. This has been adopted here. Based on such a hierarchical partition, the interfaces are clearly identified and defined and, consequently, are easily characterised. A conceptual design of the hardware manager, executing low-level hardware oriented tasks, is detailed. In addition, the idea of prognostics is briefly discussed.

Macken, K.; Burkhart, C.; Larsen, R.; Nguyen, M.N.; Olsen, J.; /SLAC

2011-12-15T23:59:59.000Z

187

Stochastic Analysis of Waterhammer and Applications in Reliability-Based Structural Design for Hydro Turbine Penstocks  

SciTech Connect (OSTI)

Abstract: The randomness of transient events, and the variability in factors which influence the magnitudes of resultant pressure fluctuations, ensures that waterhammer and surges in a pressurized pipe system are inherently stochastic. To bolster and improve reliability-based structural design, a stochastic model of transient pressures is developed for water conveyance systems in hydropower plants. The statistical characteristics and probability distributions of key factors in boundary conditions, initial states and hydraulic system parameters are analyzed based on a large record of observed data from hydro plants in China; and then the statistical characteristics and probability distributions of annual maximum waterhammer pressures are simulated using Monte Carlo method and verified by the analytical probabilistic model for a simplified pipe system. In addition, the characteristics (annual occurrence, sustaining period and probability distribution) of hydraulic loads for both steady and transient states are discussed. Illustrating with an example of penstock structural design, it is shown that the total waterhammer pressure should be split into two individual random variable loads: the steady/static pressure and the waterhammer pressure rise during transients; and that different partial load factors should be applied to each individual load to reflect its unique physical and stochastic features. Particularly, the normative load (usually the unfavorable value at 95-percentage point) for steady/static hydraulic pressure should be taken from the probability distribution of its maximum values during the pipe's design life, while for waterhammer pressure rise, as the second variable load, the probability distribution of its annual maximum values is used to determine its normative load.

Zhang, Qin Fen [ORNL] [ORNL; Karney, Professor Byran W. [University of Toronto, Canada] [University of Toronto, Canada; Suo, Prof. Lisheng [Hohai University, China] [Hohai University, China; Colombo, Dr. Andrew [University of Toronto, Canada] [University of Toronto, Canada

2011-01-01T23:59:59.000Z

188

Computers and Concrete, Vol. 3, No. 5 (2006) 313-334 313 Design optimization of reinforced concrete structures  

E-Print Network [OSTI]

Computers and Concrete, Vol. 3, No. 5 (2006) 313-334 313 Design optimization of reinforced concrete formulation aiming to achieve optimal design of reinforced concrete (RC) structures is presented here. Optimal and placing concrete and steel are incorporated as a function of member size using RS Means 2005 cost data

189

Harnessing fluid-structure interactions to design self-regulating acoustic metamaterials  

SciTech Connect (OSTI)

The design of phononic crystals and acoustic metamaterials with tunable and adaptive wave properties remains one of the outstanding challenges for the development of next generation acoustic devices. We report on the numerical and experimental demonstration of a locally resonant acoustic metamaterial with dispersion characteristics, which autonomously adapt in response to changes of an incident aerodynamic flow. The metamaterial consists of a slender beam featuring a periodic array or airfoil-shaped masses supported by a linear and torsional springs. The resonance characteristics of the airfoils lead to strong attenuation at frequencies defined by the properties of the airfoils and the speed on the incident fluid. The proposed concept expands the ability of existing acoustic bandgap materials to autonomously adapt their dispersion properties through fluid-structure interactions, and has the potential to dramatically impact a variety of applications, such as robotics, civil infrastructures, and defense systems.

Casadei, Filippo [School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States); Bertoldi, Katia [School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States); Kavli Institute for Bionano Science, Harvard University, Cambridge, Massachusetts 02138 (United States)

2014-01-21T23:59:59.000Z

190

Structural Design and Thermal Analysis for Thermal Shields of the MICE Coupling Magnets  

SciTech Connect (OSTI)

A superconducting coupling magnet made from copper matrix NbTi conductors operating at 4 K will be used in the Muon Ionization Cooling Experiment (MICE) to produce up to 2.6 T on the magnet centerline to keep the muon beam within the thin RF cavity indows. The coupling magnet is to be cooled by two cryocoolers with a total cooling capacity of 3 W at 4.2 K. In order to keep a certain operating temperature margin, the most important is to reduce the heat leakage imposed on cold surfaces of coil cold mass assembly. An ntermediate temperature shield system placed between the coupling coil and warm vacuum chamber is adopted. The shield system consists of upper neck shield, main shields, flexible connections and eight supports, which is to be cooled by the first stage cold heads of two ryocoolers with cooling capacity of 55 W at 60 K each. The maximum temperature difference on the shields should be less than 20 K, so the thermal analyses for the shields with different thicknesses, materials, flexible connections for shields' cooling and structure design for heir supports were carried out. 1100 Al is finally adopted and the maximum temperature difference is around 15 K with 4 mm shield thickness. The paper is to present detailed analyses on the shield system design.

Green, Michael A.; Pan, Heng; Liu, X. K.; Wang, Li; Wu, Hong; Chen, A. B.; Guo, X.L.

2009-07-01T23:59:59.000Z

191

Crystal Structures of Aureochrome1 LOV Suggest New Design Strategies for Optogenetics  

SciTech Connect (OSTI)

Aureochrome1, a signaling photoreceptor from a eukaryotic photosynthetic stramenopile, confers blue-light-regulated DNA binding on the organism. Its topology, in which a C-terminal LOV sensor domain is linked to an N-terminal DNA-binding bZIP effector domain, contrasts with the reverse sensor-effector topology in most other known LOV-photoreceptors. How, then, is signal transmitted in Aureochrome1? The dark- and light-state crystal structures of Aureochrome1 LOV domain (AuLOV) show that its helical N- and C-terminal flanking regions are packed against the external surface of the core {beta} sheet, opposite to the FMN chromophore on the internal surface. Light-induced conformational changes occur in the quaternary structure of the AuLOV dimer and in Phe298 of the H{beta} strand in the core. The properties of AuLOV extend the applicability of LOV domains as versatile design modules that permit fusion to effector domains via either the N- or C-termini to confer blue-light sensitivity.

Mitra, Devrani; Yang, Xiaojing; Moffat, Keith (UC)

2014-10-02T23:59:59.000Z

192

Uniform hierarchical SnS microspheres: Solvothermal synthesis and lithium ion storage performance  

SciTech Connect (OSTI)

Graphical abstract: - Highlights: • Uniform hierarchical SnS microspheres via solvothermal reaction. • The formation process was investigated in detail. • The obtained hierarchical SnS microspheres exhibit superior capacity (1650 mAh g{sup ?1}) when used as lithium battery for the hierarchical microsphere structure. - Abstract: Hierarchical SnS microspheres have been successfully synthesized by a mild solvothermal process using poly(vinylpyrrolidone) as surfactant in this work. The morphology and composition of the microspheres were investigated by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The influence of reaction parameters, such as sulfur sources, reaction temperature and the concentration of PVP, on the final morphology of the products are investigated. On the basis of time-dependent experiments, the growth mechanism has also been proposed. The specific surface area of the 3D hierarchitectured SnS microspheres were investigated by using nitrogen adsorption and desorption isotherms. Lithium ion storage performances of the synthesized materials as anodes for Lithium-ion battery were investigated in detail and it exhibits excellent electrochemical properties.

Fang, Zhen, E-mail: fzfscn@mail.ahnu.edu.cn; Wang, Qin; Wang, Xiaoqing; Fan, Fan; Wang, Chenyan; Zhang, Xiaojun

2013-11-15T23:59:59.000Z

193

E-Print Network 3.0 - aircraft structural design Sample Search...  

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

-equipped aircraft. The paper begins with a brief review of a method for designing a scheduling system that assigns... , control- lers could get aircraft over a designated...

194

Hierarchical Modeling for Population-Based Heat Exchanger Design  

E-Print Network [OSTI]

porous media exist. Hydrogen storage systems using variousprovide an example. Hydrogen storage systems are multi-leveland operation of hydrogen storage technologies. Similar to

Geb, David

2013-01-01T23:59:59.000Z

195

Design and Evaluation of Hierarchical Rings with Deflection Routing  

E-Print Network [OSTI]

that enable us to mostly maintain the simplicity of traditional simple ring topologies while providing higher of several MUXes to allow traffic to enter and leave, and one pipeline register. Its latency is typically and commercial multicore processors have utilized ring

Mutlu, Onur

196

Hierarchical Modeling for Population-Based Heat Exchanger Design  

E-Print Network [OSTI]

layer," Journal of Fluids Engineering, 117(1), pp. 181-journal. Ser. 2, Fluids engineering, heat transfer, power,Networks," Journal of Fluids Engineering, 125(6), pp. 1051-

Geb, David

2013-01-01T23:59:59.000Z

197

Model-Based Hierarchical Optimal Control Design for HVAC Systems  

E-Print Network [OSTI]

sun on the external sides of the walls in deriving the differential equations of the temperature distribution

Maasoumy, Mehdi; Pinto, Alessandro; Sangiovanni-Vincentelli, Alberto

2014-01-01T23:59:59.000Z

198

Hierarchical electrode architectures for electrical energy storage & conversion.  

SciTech Connect (OSTI)

The integration and stability of electrocatalytic nanostructures, which represent one level of porosity in a hierarchical structural scheme when combined with a three-dimensional support scaffold, has been studied using a combination of synthetic processes, characterization techniques, and computational methods. Dendritic platinum nanostructures have been covalently linked to common electrode surfaces using a newly developed chemical route; a chemical route equally applicable to a range of metals, oxides, and semiconductive materials. Characterization of the resulting bound nanostructure system confirms successful binding, while electrochemistry and microscopy demonstrate the viability of these electroactive particles. Scanning tunneling microscopy has been used to image and validate the short-term stability of several electrode-bound platinum dendritic sheet structures toward Oswald ripening. Kinetic Monte Carlo methods have been applied to develop an understanding of the stability of the basic nano-scale porous platinum sheets as they transform from an initial dendrite to hole containing sheets. Alternate synthetic strategies were pursued to grow dendritic platinum structures directly onto subunits (graphitic particles) of the electrode scaffold. A two-step photocatalytic seeding process proved successful at generating desirable nano-scale porous structures. Growth in-place is an alternate strategy to the covalent linking of the electrocatalytic nanostructures.

Zavadil, Kevin Robert; Missert, Nancy A.; Shelnutt, John Allen; van Swol, Frank B.

2012-01-01T23:59:59.000Z

199

Topologies to geometries in protein folding: Hierarchical and nonhierarchical scenarios  

E-Print Network [OSTI]

Topologies to geometries in protein folding: Hierarchical and nonhierarchical scenarios Ariel Ferna presents a method to portray protein folding dynamics at a coarse resolution, based on a pattern

Berry, R. Stephen

200

Stochastic dynamics of virus capsid formation: direct versus hierarchical self-assembly  

E-Print Network [OSTI]

In order to replicate within their cellular host, many viruses have developed self-assembly strategies for their capsids which are sufficiently robust as to be reconstituted in vitro. Mathematical models for virus self-assembly usually assume that the bonds leading to cluster formation have constant reactivity over the time course of assembly (direct assembly). In some cases, however, binding sites between the capsomers have been reported to be activated during the self-assembly process (hierarchical assembly). In order to study possible advantages of such hierarchical schemes for icosahedral virus capsid assembly, we use Brownian dynamics simulations of a patchy particle model that allows us to switch binding sites on and off during assembly. For T1 viruses, we implement a hierarchical assembly scheme where inter-capsomer bonds become active only if a complete pentamer has been assembled. We find direct assembly to be favorable for reversible bonds allowing for repeated structural reorganizations, while hierarchical assembly is favorable for strong bonds with small dissociation rate, as this situation is less prone to kinetic trapping. However, at the same time it is more vulnerable to monomer starvation during the final phase. Increasing the number of initial monomers does have only a weak effect on these general features. The differences between the two assembly schemes become more pronounced for more complex virus geometries, as shown here for T3 viruses, which assemble through homogeneous pentamers and heterogeneous hexamers in the hierarchical scheme. In order to complement the simulations for this more complicated case, we introduce a master equation approach that agrees well with the simulation results.

Johanna E. Baschek; Heinrich C. R. Klein; Ulrich S. Schwarz

2015-01-31T23:59:59.000Z

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


201

THE TRIPLY ECLIPSING HIERARCHICAL TRIPLE STAR KIC002856960  

SciTech Connect (OSTI)

In a recent study, Armstrong et al. presented an eclipsing binary star of about 6.2 hr period with transit-like tertiary signals occurring every 204.2 days in the Kepler public data of KIC002856960 and proposed three possible hierarchical structures: (AB)b, (AB)C, and A(BC). We analyzed the Kepler light curve by including a third light source and one starspot on each binary component. The results represent that the close eclipsing pair is in a low-mass eccentric-orbit, detached configuration. Based on 123 eclipse timings calculated from the Wilson-Devinney binary model, a period study of the close binary reveals that the orbital period has experienced a sinusoidal variation with a period and a semi-amplitude of 205 {+-} 2 days and 0.0021 {+-} 0.0002 days, respectively. The period variation would be produced by the light-travel-time effect due to a gravitationally bound third body with a minimum mass of M {sub 3}sin i {sub 3} = 0.76 M {sub Sun} in an eccentric orbit of e {sub 3} = 0.61. This is consistent with the presence of third light found in our light curve solution and the tertiary signal of 204.2 day period most likely arises from the K-type star crossed by the close eclipsing binary. Then, KIC002856960 is a triply eclipsing hierarchical system, A(BC), consisting of a close binary with two M-type dwarfs and a more massive K-type component. The presence of the third star may have played an important role in the formation and evolution of the close pair, which may ultimately evolve into a contact system by angular momentum loss.

Lee, Jae Woo; Kim, Seung-Lee; Lee, Chung-Uk; Lee, Byeong-Cheol; Park, Byeong-Gon; Hinse, Tobias Cornelius, E-mail: jwlee@kasi.re.kr, E-mail: slkim@kasi.re.kr, E-mail: leecu@kasi.re.kr, E-mail: bclee@kasi.re.kr, E-mail: bgpark@kasi.re.kr, E-mail: tchinse@gmail.com [Korea Astronomy and Space Science Institute, Daejon 305-348 (Korea, Republic of)

2013-02-15T23:59:59.000Z

202

Structural Optimization 13, 23-28 (~) Springer-Verlag 1997 Optimal design of 1-3 composite piezoelectrics  

E-Print Network [OSTI]

of a hydrophone composite consisting of parallel piezoceramic rods that are embedded in a porous polymer matrix hydrophone sensitivity can be achieved by making a composite consisting of piezo- ceramic rods in a softStructural Optimization 13, 23-28 (~) Springer-Verlag 1997 Optimal design of 1-3 composite

Torquato, Salvatore

203

Technique for fast and efficient hierarchical clustering  

DOE Patents [OSTI]

A fast and efficient technique for hierarchical clustering of samples in a dataset includes compressing the dataset to reduce a number of variables within each of the samples of the dataset. A nearest neighbor matrix is generated to identify nearest neighbor pairs between the samples based on differences between the variables of the samples. The samples are arranged into a hierarchy that groups the samples based on the nearest neighbor matrix. The hierarchy is rendered to a display to graphically illustrate similarities or differences between the samples.

Stork, Christopher

2013-10-08T23:59:59.000Z

204

Architectural Design 2.0 : An online platform for the mass customization of architectural structures  

E-Print Network [OSTI]

Not only are there incredible inefficiencies in the current practice of design, fabrication and construction of architecture, but, until now these processes have been limited to costly design professionals, wasteful ...

Smithwick, Daniel J., II (Daniel John)

2010-01-01T23:59:59.000Z

205

Structural characterization and design optimization of hybrid composite tubes for TLP riser applications  

E-Print Network [OSTI]

Composite materials offer a unique opportunity for offshore applications where high stiffness and light weight are the major design criteria. Deep water drilling and production risers are one area where detailed design studies of potential composite...

Farivar-Sadri, Kamran

1995-01-01T23:59:59.000Z

206

In Situ One-Step Synthesis of Hierarchical Nitrogen-Doped Porous...  

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

Synthesis of Hierarchical Nitrogen-Doped Porous Carbon for High Performance Supercapacitors. In Situ One-Step Synthesis of Hierarchical Nitrogen-Doped Porous Carbon for High...

207

E-Print Network 3.0 - applying bayesian hierarchical Sample Search...  

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

modeling and Bayesian... for public health data. Wiley, New York, New York, USA. Wikle, C. K. 2003. Hierarchical Bayesian models... . Cressie. 1998. Hierarchical ... Source:...

208

Physical Similitude in Hierarchical Engineered Systems  

E-Print Network [OSTI]

high exit friction. Nuclear Engineering and Design, [23] R.test facility (apex). Nuclear Engineering and Design, 186:future reactor systems. Nuclear Engineering and Design, 235:

Blandford, Edward David

2010-01-01T23:59:59.000Z

209

Aalborg Universitet Hierarchical Control for Multiple DC Microgrids Clusters  

E-Print Network [OSTI]

Aalborg Universitet Hierarchical Control for Multiple DC Microgrids Clusters Shafiee, Qobad Control for Multiple DC Microgrids Clusters. I E E E Transactions on Energy Conversion. General rights, J. C. Vasquez, and J. M. Guerrero, "Hierarchical Control for Multiple DC-Microgrids Clusters," IEEE

Vasquez, Juan Carlos

210

Hierarchical clustering using correlation metric and spatial continuity constraint  

DOE Patents [OSTI]

Large data sets are analyzed by hierarchical clustering using correlation as a similarity measure. This provides results that are superior to those obtained using a Euclidean distance similarity measure. A spatial continuity constraint may be applied in hierarchical clustering analysis of images.

Stork, Christopher L.; Brewer, Luke N.

2012-10-02T23:59:59.000Z

211

A Turbo Iteration Algorithm In 16QAM Hierarchical Modulation  

E-Print Network [OSTI]

A Turbo Iteration Algorithm In 16QAM Hierarchical Modulation Xu Zhe Electric and Information on the turbo code, OFDM modulation and 16QAM hierarchical modulation to increase the flexibility, and in the high SNR, it can also gain a high BER performance of low priority bit stream. Keywords- turbo iteration

Paris-Sud XI, Université de

212

Hierarchical Iso-Surface Extraction Computer Graphics Group  

E-Print Network [OSTI]

Hierarchical Iso-Surface Extraction Ulf Labsik Computer Graphics Group University of Erlangen Kai of our hierarchical iso-surface extraction algorithm. Abstract The extraction and display of iso construct a hierarchy of volumes and extract an iso-surface from the coarsest resolution with a standard

Desbrun, Mathieu

213

Oracle Database DBFS Hierarchical Storage Overview  

SciTech Connect (OSTI)

The National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory creates large numbers of images during each shot cycle for the analysis of optics, target inspection and target diagnostics. These images must be readily accessible once they are created and available for the 30 year lifetime of the facility. The Livermore Computing Center (LC) runs a High Performance Storage System (HPSS) that is capable of storing NIF's estimated 1 petabyte of diagnostic images at a fraction of what it would cost NIF to operate its own automated tape library. With Oracle 11g Release 2 database, it is now possible to create an application transparent, hierarchical storage system using the LC's HPSS. Using the Oracle DBMS-LOB and DBMS-DBFS-HS packages a SecureFile LOB can now be archived to storage outside of the database and accessed seamlessly through a DBFS 'link'. NIF has chosen to use this technology to implement a hierarchical store for its image based SecureFile LOBs. Using a modified external store and DBFS links, files are written to and read from a disk 'staging area' using Oracle's backup utility. Database external procedure calls invoke OS based scripts to manage a staging area and the transfer of the backup files between the staging area and the Lab's HPSS.

Rivenes, A

2011-07-25T23:59:59.000Z

214

Poster NONOVERLAP SOURCE/DRAIN-TO-GATE NANO-CMOS STRUCTURE FOR LOW LEAKAGE DRAM DESIGN  

E-Print Network [OSTI]

shown in Fig.1 using SILVACO. In this structure, the wide nonoverlap region formed by spacer suppresses

Seunghyun Song; Kangsung Lee; Yoonha Jeong

215

Seismic design technology for breeder reactor structures. Volume 2. Special topics in soil/structure interaction analyses  

SciTech Connect (OSTI)

This volume is divided into six chapters: definition of seismic input ground motion, review of state-of-the-art procedures, analysis guidelines, rock/structure interaction analysis example, comparison of two- and three-dimensional analyses, and comparison of analyses using FLUSH and TRI/SAC Codes. (DLC)

Reddy, D.P.

1983-04-01T23:59:59.000Z

216

A Multi-layer, Hierarchical Information Management System for the Smart Grid  

SciTech Connect (OSTI)

This paper presents the modeling approach, methodologies, and initial results of setting up a multi-layer, hierarchical information management system (IMS) for the smart grid. The IMS allows its users to analyze the data collected by multiple control and communication networks to characterize the states of the smart grid. Abnormal, corrupted, or erroneous measurement data and outliers are detected and analyzed to identify whether they are caused by random equipment failures, unintentional human errors, or deliberate tempering attempts. Data collected from different information networks are crosschecked for data integrity based on redundancy, dependency, correlation, or cross-correlations, which reveal the interdependency between data sets. A hierarchically structured reasoning mechanism is used to rank possible causes of an event to aid the system operators to proactively respond or provide mitigation recommendations to remove or neutralize the threats. The model provides satisfactory performance on identifying the cause of an event and significantly reduces the need of processing myriads of data collected.

Lu, Ning; Du, Pengwei; Paulson, Patrick R.; Greitzer, Frank L.; Guo, Xinxin; Hadley, Mark D.

2011-10-10T23:59:59.000Z

217

CONCEPTUAL DESIGN REPORT  

SciTech Connect (OSTI)

Brookhaven National Laboratory has prepared a conceptual design for a world class user facility for scientific research using synchrotron radiation. This facility, called the ''National Synchrotron Light Source II'' (NSLS-II), will provide ultra high brightness and flux and exceptional beam stability. It will also provide advanced insertion devices, optics, detectors, and robotics, and a suite of scientific instruments designed to maximize the scientific output of the facility. Together these will enable the study of material properties and functions with a spatial resolution of {approx}1 nm, an energy resolution of {approx}0.1 meV, and the ultra high sensitivity required to perform spectroscopy on a single atom. The overall objective of the NSLS-II project is to deliver a research facility to advance fundamental science and have the capability to characterize and understand physical properties at the nanoscale, the processes by which nanomaterials can be manipulated and assembled into more complex hierarchical structures, and the new phenomena resulting from such assemblages. It will also be a user facility made available to researchers engaged in a broad spectrum of disciplines from universities, industries, and other laboratories.

ROBINSON,K.

2006-12-31T23:59:59.000Z

218

Abstract--The concept of microgrid hierarchical control is presented recently. In this paper, a hierarchical scheme is  

E-Print Network [OSTI]

1 1 Abstract-- The concept of microgrid hierarchical control is presented recently. In this paper) in an islanded microgrid. Unbalance compensation is achieved by sending proper control signals to the DGs local unbalance. Index Terms--Distributed generator (DG), hierarchical control, microgrid, secondary control

Vasquez, Juan Carlos

219

Application of structural-mechanics methods to the design of large tandem-mirror fusion devices (MFTF-B)  

SciTech Connect (OSTI)

The Mirror Fusion Test Facility (MFTF-B) at Lawrence Livermore National Laboratory requires state-of-the-art structural-mechanics methods to deal with access constraints for plasma heating and diagnostics, alignment requirements, and load complexity and variety. Large interactive structures required an integrated analytical approach to achieve a reasonable level of overall system optimization. The Tandem Magnet Generator (TMG) creates a magnet configuration for the EFFI calculation of electromagnetic-field forces that, coupled with other loads, form the input loading to magnet and vessel finite-element models. The analytical results provide the data base for detailed design of magnet, vessel, foundation, and interaction effects.

Karpenko, V.N.; Ng, D.S.

1985-03-04T23:59:59.000Z

220

Federal and State Structures to Support Financing Utility-Scale Solar Projects and the Business Models Designed to Utilize Them  

SciTech Connect (OSTI)

Utility-scale solar projects have grown rapidly in number and size over the last few years, driven in part by strong renewable portfolio standards (RPS) and federal incentives designed to stimulate investment in renewable energy technologies. This report provides an overview of such policies, as well as the project financial structures they enable, based on industry literature, publicly available data, and questionnaires conducted by the National Renewable Energy Laboratory (NREL).

Mendelsohn, M.; Kreycik, C.

2012-04-01T23:59:59.000Z

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


221

Abundance ratios in hierarchical galaxy formation  

E-Print Network [OSTI]

The chemical enrichment and stellar abundance ratios of galaxies which form in a hierarchical clustering scheme are calculated. For this purpose I adopt the star formation histories (SFH) as they are delivered by semi-analytic models in Kauffmann (1996}. It turns out that the average SFH of cluster ellipticals does not yield globally alpha-enhanced stellar populations. The star burst that occurs when the elliptical forms in the major merger plays therefore a crucial role in producing alpha-enhancement. Only under the assumption that the IMF is significantly flattened with respect to the Salpeter value during the burst, a Mg/Fe overabundant population can be obtained. In particular for the interpretation of radial gradients in metallicity and alpha-enhancement, the mixing of global and burst populations are of great importance. The model predicts bright field galaxies to be less alpha-enhanced than their counterparts in clusters.

D. Thomas

1999-01-18T23:59:59.000Z

222

Structural Design Considerations for Tubular Power Tower Receivers Operating at 650 Degrees C: Preprint  

SciTech Connect (OSTI)

Research of advanced power cycles has shown supercritical carbon dioxide power cycles may have thermal efficiency benefits relative to steam cycles at temperatures around 500 - 700 degrees C. To realize these benefits for CSP, it is necessary to increase the maximum outlet temperature of current tower designs. Research at NREL is investigating a concept that uses high-pressure supercritical carbon dioxide as the heat transfer fluid to achieve a 650 degrees C receiver outlet temperature. At these operating conditions, creep becomes an important factor in the design of a tubular receiver and contemporary design assumptions for both solar and traditional boiler applications must be revisited and revised. This paper discusses lessons learned for high-pressure, high-temperature tubular receiver design. An analysis of a simplified receiver tube is discussed, and the results show the limiting stress mechanisms in the tube and the impact on the maximum allowable flux as design parameters vary. Results of this preliminary analysis indicate an underlying trade-off between tube thickness and the maximum allowable flux on the tube. Future work will expand the scope of design variables considered and attempt to optimize the design based on cost and performance metrics.

Neises, T. W.; Wagner, M. J.; Gray, A. K.

2014-04-01T23:59:59.000Z

223

Structure-Based Design of Potent and Ligand-Efficient Inhibitors of CTX-M Class A [beta]-Lactamase  

SciTech Connect (OSTI)

The emergence of CTX-M class A extended-spectrum {beta}-lactamases poses a serious health threat to the public. We have applied structure-based design to improve the potency of a novel noncovalent tetrazole-containing CTX-M inhibitor (K{sub i} = 21 {mu}M) more than 200-fold via structural modifications targeting two binding hot spots, a hydrophobic shelf formed by Pro167 and a polar site anchored by Asp240. Functional groups contacting each binding hot spot independently in initial designs were later combined to produce analogues with submicromolar potencies, including 6-trifluoromethyl-3H-benzoimidazole-4-carboxylic acid [3-(1H-tetrazol-5-yl)-phenyl]-amide, which had a K{sub i} value of 89 nM and reduced the MIC of cefotaxime by 64-fold in CTX-M-9 expressing Escherichia coli. The in vitro potency gains were accompanied by improvements in ligand efficiency (from 0.30 to 0.39) and LipE (from 1.37 to 3.86). These new analogues represent the first nM-affinity noncovalent inhibitors of a class A {beta}-lactamase. Their complex crystal structures provide valuable information about ligand binding for future inhibitor design.

Nichols, Derek A.; Jaishankar, Priyadarshini; Larson, Wayne; Smith, Emmanuel; Liu, Guoqing; Beyrouthy, Racha; Bonnet, Richard; Renslo, Adam R.; Chen, Yu (USF); (UCSF); (Clermont)

2012-07-11T23:59:59.000Z

224

Comparison of two Self-Organization and Hierarchical Routing Protocols for Ad Hoc Networks  

E-Print Network [OSTI]

Comparison of two Self-Organization and Hierarchical Routing Protocols for Ad Hoc Networks Bet. In this article, we compare two self-organization and hierarchical rout- ing protocols for ad hoc networks-organization and hierarchical routing in ad hoc networks. keywords: ad hoc networks, hierarchical routing, DHT, comparison

Paris-Sud XI, Université de

225

Self-Assembly by Design: From Structure and Function to Nanoscale Construction.  

E-Print Network [OSTI]

??This thesis is devoted to the discovery and application of fundamental design principles for molecular self-assembly. Self-assembled monolayer (SAMs) of organic thiols on Au{111} are… (more)

Hohman , James

2011-01-01T23:59:59.000Z

226

Maximizing the divergence from a hierarchical model of quantum states  

E-Print Network [OSTI]

We study many-party correlations quantified in terms of the Umegaki relative entropy (divergence) from a Gibbs family known as a hierarchical model. We derive these quantities from the maximum-entropy principle which was used earlier to define the closely related irreducible correlation. We point out differences between quantum states and probability vectors which exist in hierarchical models, in the divergence from a hierarchical model and in local maximizers of this divergence. The differences are, respectively, missing factorization, discontinuity and reduction of uncertainty. We discuss global maximizers of the mutual information of separable qubit states.

Stephan Weis; Andreas Knauf; Nihat Ay; Ming-Jing Zhao

2015-02-12T23:59:59.000Z

227

Design and analysis of algorithms and data structures for the efficient solution of graph theoretic problems on MIMD computers  

SciTech Connect (OSTI)

The problem of developing efficient algorithms and data structures to solve graph theoretic problems on tightly-coupled MIMD comuters is addressed. Several approaches to parallelizing a serial algorithm are examined. A technique is developed which allows the prediction of the expected execution time of some kinds of parallel algorithms. This technique can be used to determine which parallel algorithm is best for a particular application. Two parallel approximate algorithms for the Euclidean traveling salesman problem are designed and analyzed. The algorithms are parallelizations of the farthest-insertion heuristic and Karp's partitioning algorithm. Software lockout, the delay of processes due to contention for shared data structure, can be a significant hindrance to obtaining satisfactory speedup. Using the tactics of indirection and replication, new data structures are devised which can reduce the severity of software lockout. Finally, an upper bound to the speedup of parallel branch-and-bound algorithms which use the best-bound search strategy is determined.

Quinn, M.J.

1983-01-01T23:59:59.000Z

228

Representing Multi-Parent Organizational Structures for Use in High Performance Computing Resource Scheduling Algorithms.  

E-Print Network [OSTI]

??Historically, organizational structures of many universities and corporations have followed a strictly tree-based, hierarchical model. These organizations are defined with no more than one parent… (more)

Brown, Lloyd T 1982-

2010-01-01T23:59:59.000Z

229

Hierarchical graphs for better annotations of rule-based models of biochemical systems  

SciTech Connect (OSTI)

In the graph-based formalism of the BioNetGen language (BNGL), graphs are used to represent molecules, with a colored vertex representing a component of a molecule, a vertex label representing the internal state of a component, and an edge representing a bond between components. Components of a molecule share the same color. Furthermore, graph-rewriting rules are used to represent molecular interactions, with a rule that specifies addition (removal) of an edge representing a class of association (dissociation) reactions and with a rule that specifies a change of vertex label representing a class of reactions that affect the internal state of a molecular component. A set of rules comprises a mathematical/computational model that can be used to determine, through various means, the system-level dynamics of molecular interactions in a biochemical system. Here, for purposes of model annotation, we propose an extension of BNGL that involves the use of hierarchical graphs to represent (1) relationships among components and subcomponents of molecules and (2) relationships among classes of reactions defined by rules. We illustrate how hierarchical graphs can be used to naturally document the structural organization of the functional components and subcomponents of two proteins: the protein tyrosine kinase Lck and the T cell receptor (TCR)/CD3 complex. Likewise, we illustrate how hierarchical graphs can be used to document the similarity of two related rules for kinase-catalyzed phosphorylation of a protein substrate. We also demonstrate how a hierarchical graph representing a protein can be encoded in an XML-based format.

Hu, Bin [Los Alamos National Laboratory; Hlavacek, William [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

230

Depth Partitions, Hierarchical Network Structure, and Networks-Affect-Pricing  

E-Print Network [OSTI]

heavey industries 4 5596 37 sony sony 4 417 37 canon canon 7 217 34 ebara ebara 8 4043 29 tokimec tokimec

White, Douglas R.

231

Hierarchical Structure-Ferroelectricity Relationships of Barium Titanate Particles  

E-Print Network [OSTI]

approaching the same scale in the process of miniaturization. The identification of the most influential, have been well-studied in a bulk BaTiO3 crystal. Correspondingly, the cooperative effect scale in the process of miniatur- ization. The identification of the most influential struc- ture among

Aksay, Ilhan A.

232

RD-Optimization of Hierarchical Structured Adaptive Vector Quantization  

E-Print Network [OSTI]

compensation can become competitive with standard transform coding. 1 Introduction Vector quantization (VQ) has coding based on entropy coding of motion compensated residual frames in the frequency domain, adaptive mode). This video codec does not apply motion compensation, however. A comparison with standard

Reiterer, Harald

233

Hierarchical modeling of structure and mechanics of cement hydrate  

E-Print Network [OSTI]

With an annual production of more than 20 billion tons a year, concrete continues to be the world's dominating manufacturing material for a foreseeable future. However, this ubiquity comes with a large ecological price as ...

Shahsavari, Rouzbeh

2011-01-01T23:59:59.000Z

234

The emergence of hierarchical structure in human language  

E-Print Network [OSTI]

We propose a novel account for the emergence of human language syntax. Like many evolutionary innovations, language arose from the adventitious combination of two pre-existing, simpler systems that had been evolved for ...

Miyagawa, Shigeru

235

Mean and Covariance Structure Analysis of Hierarchical Data  

E-Print Network [OSTI]

are g H d ' = ^ z ' ^ g ® »V S = symmetric d lNg where I N Ng ® £yz lNg ® 2w is an identity matrixof dimension N , l g + lNg lNg' ® N g is a unit vector of

Bengt O. Muthén

2011-01-01T23:59:59.000Z

236

Evolution of HII regions in hierarchically structured molecular clouds  

E-Print Network [OSTI]

We present observations of the H91$\\alpha$ recombination line emission towards a sample of nine HII regions associated with 6.7-GHz methanol masers, and report arcsecond-scale emission around compact cores. We derive physical parameters for our sources, and find that although simple hydrostatic models of region evolution reproduce the observed region sizes, they significantly underestimate emission measures. We argue that these findings are consistent with young source ages in our sample, and can be explained by existence of density gradients in the ionised gas.

Stanislav Shabala; Simon Ellingsen; Stan Kurtz; Larry Forbes

2006-07-26T23:59:59.000Z

237

Hybrid direct write lithographic strategies for complex hierarchical structures  

E-Print Network [OSTI]

With the number of alternative lithographic techniques for high resolution and 3D patterning rapidly increasing, there is a need to identify a set of scalable techniques which balances the ability to arbitrarily control ...

Singer, Jonathan P. (Jonathan Phillip)

2013-01-01T23:59:59.000Z

238

Geopolymer with hierarchically meso-/macroporous structures from reactive  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickr Flickr Editor'sshort version)Unveils High-TechNaturalGeologic

239

The role of computer-aided drafting, analysis, and design software in structural engineering practice  

E-Print Network [OSTI]

Perhaps the greatest innovation in engineering in the last fifty years, computer software has changed the way structural engineers conduct nearly every aspect of their daily business. Computer-aided drafting, analysis, and ...

De los Reyes, Adrian

2006-01-01T23:59:59.000Z

240

Towards and embeddable structural health monitoring sensor : design and optimization of MEMS piezoelectric vibration energy harvesters  

E-Print Network [OSTI]

Wireless structural health monitoring (SHM) has gained considerable interest as a potential method of reducing aircraft maintenance costs while increasing safety. Distributed power supplies for the sensing nodes are needed ...

Mracek, Anna Marie

2006-01-01T23:59:59.000Z

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


241

Aquatecture : underwater dwellings and sea born structures as paradigms of design  

E-Print Network [OSTI]

There are many reasons for undertaking a work such as this. Among them are the benefits offered to society when we acknowledge the potential of submersible structures, The provision of habitable underwater space remains ...

Guillermo, Ricardo

1982-01-01T23:59:59.000Z

242

Structural Composites Industries 4 kilowatt wind system development. Phase I: design and analysis, technical report  

SciTech Connect (OSTI)

A 4 kW small wind energy conversion system (SWECS) has been designed for residential applications in which relatively low (10 mph) mean annual wind speeds prevail. The objectives were to develop such a machine to produce electrical energy at 6 cents per kWh while operating in parallel with a utility grid or auxiliary generator. The Phase I effort began in November, 1979 and was carried through the Final Design Review in February 1981. During this period extensive trade, optimization and analytical studies were performed in an effort to provide the optimum machine to best meet the objectives. Certain components, systems and manufacturing processes were tested and evaluated and detail design drawings were produced. The resulting design is a 31-foot diameter horizontal axis downwind machine rated 5.7 kW and incorporating the following unique features: Composite Blades; Free-Standing Composite Tower; Torque-Actuated Blade Pitch Control. The design meets or exceeds all contract requirements except that for cost of energy. The target 6 cents per kWh will be achieved in a mean wind speed slightly below 12 mph instead of the specified 10 mph.

Malkine, N.; Bottrell, G.; Weingart, O.

1981-05-01T23:59:59.000Z

243

Hierarchical MEMS Synthesis and Optimization Ying Zhang1  

E-Print Network [OSTI]

Hierarchical MEMS Synthesis and Optimization Ying Zhang1 , Raffi Kamalian2 , Alice M. Agogino3 to demonstrate MEMS 1 Ying Zhang: yzh@berkeley.edu, Tel: (510)6438146. 2 Raffi Kamalian: raffi

Agogino, Alice M.

244

Rheological and morphological characterization of hierarchically nanostructured materials  

E-Print Network [OSTI]

Hierarchically nanostructured materials exhibit order on multiple length scales, with at least one of a few nanometers. The expected enhancements for applications using these materials include improved mechanical, thermal ...

Wang, Benjamin Ning-Haw

2007-01-01T23:59:59.000Z

245

Bayesian Hierarchical Model for Combining Two-resolution Metrology Data  

E-Print Network [OSTI]

This dissertation presents a Bayesian hierarchical model to combine two-resolution metrology data for inspecting the geometric quality of manufactured parts. The high- resolution data points are scarce, and thus scatter over the surface being...

Xia, Haifeng

2010-01-14T23:59:59.000Z

246

Hierarchical Models in Environmental Science Christopher K. Wikle  

E-Print Network [OSTI]

Hierarchical Models in Environmental Science Christopher K. Wikle July 2002 Accepted for, 222 Math Science Building, Columbia, MO 65203. e-mail: wikle@stat.missouri.edu 0 #12;1 Introduction

247

Learning Hierarchical Plans by Reading Simple English Dustin Smith  

E-Print Network [OSTI]

Learning Hierarchical Plans by Reading Simple English Narratives Dustin Smith MIT Media Lab Cambridge, MA USA dsmit@mit.edu Kenneth Arnold MIT Media Lab Cambridge, MA USA kcarnold@mit.edu ABSTRACT We

Herr, Hugh

248

Chaotic spin correlations in frustrated Ising hierarchical lattices  

E-Print Network [OSTI]

Spin-spin correlations are calculated in frustrated hierarchical Ising models that exhibit chaotic renormalization-group behavior. The spin-spin correlations, as a function of distance, behave chaotically. The far correlations, ...

Aral, Nese

249

Protein folding and non-conventional drug design: a primer for nuclear structure physicists  

SciTech Connect (OSTI)

Some of the paradigms emerging from the study of the phenomena of phase transitions in finite many-body systems, like e.g. the atomic nucleus can be used at profit to solve the protein folding problem within the framework of simple (although not oversimplified) models. From this solution a paradigm emerges for the design of non-conventional drugs, which inhibit enzymatic action without inducing resistance (mutations). The application of these concepts to the design of an inhibitor to the HIV-protease central in the life cycle of the HIV virus is discussed.

Broglia, R.A. [Dipartimento di Fisica, Universita di Milano, Via Celoria 16, I-20133 Milan (Italy); INFN, Sezione di Milano, Via Celoria 16, I-20133 Milan (Italy); Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen (Denmark); Tiana, G.; Provasi, D. [Dipartimento di Fisica, Universita di Milano, Via Celoria 16, I-20133 Milan (Italy); INFN, Sezione di Milano, Via Celoria 16, I-20133 Milan (Italy)

2004-02-27T23:59:59.000Z

250

Towards a Structural Secure Design Process S. Hasan Mirjalili Arjen K. Lenstra  

E-Print Network [OSTI]

security from the beginning and throughout the life cycle of the system. Secure system design methods have.Lenstra@epfl.ch Abstract -- Computing has become part of everyday life by means of consumer electronics, embedded systems development by exploring systems security requirements. The methodologies can be classified into five

Lenstra, Arjen K.

251

Combining Functional and Structural Reasoning for Safety Analysis of Electrical Designs  

E-Print Network [OSTI]

in detail. FLAME has been developed over several years, and is capable of composing an FMEA report for many Failure mode effects analysis (FMEA) of a design involves the investigation and assessment of the effects, electronic and mechanical systems are being combined in safety-critical applications. Automation of FMEA

Snooke, Neal

252

Optimal Design and Scheduling of Unsteady State Material Recovery Networks  

E-Print Network [OSTI]

methodologies: the first is a hierarchical multi-step methodology developed for the design and scheduling of batch water (material of interest) recycle networks. A new source- double tank-sink arrangement is introduced to overcome the limitation of samecycle...

Rabie, Arwa H.

2010-01-14T23:59:59.000Z

253

Bayesian Hierarchical Community Discovery Charles Blundell  

E-Print Network [OSTI]

collaborations, and politicians may form factions. Conse- quently the structure found in social networks is often

Ghahramani, Zoubin

254

Seismic design technology for breeder reactor structures. Volume 1. Special topics in earthquake ground motion  

SciTech Connect (OSTI)

This report is divided into twelve chapters: seismic hazard analysis procedures, statistical and probabilistic considerations, vertical ground motion characteristics, vertical ground response spectrum shapes, effects of inclined rock strata on site response, correlation of ground response spectra with intensity, intensity attenuation relationships, peak ground acceleration in the very mean field, statistical analysis of response spectral amplitudes, contributions of body and surface waves, evaluation of ground motion characteristics, and design earthquake motions. (DLC)

Reddy, D.P.

1983-04-01T23:59:59.000Z

255

Design of a short electro-optic modulator based on SiGe HBT structure  

E-Print Network [OSTI]

­68980C­10 (2008). 3. A. Liu, R. Jones, L. Liao, D. Samara-Rubio, D. Rubin, O. Cohen, R. Nicolaescu­17113 (2007). 7. S. Deng, Z. R. Huang, and J. F. McDonald, "Design of high efficiency multi-GHz SiGe HBT.-S. Rieh, D. Greenberg, A. Stricker, and G. Freeman, "Scaling of SiGe heterojunction bipolar transistors

Huang, Zhaoran "Rena"

256

Structural design and analysis of a lightweight composite sandwich space radiator panel  

E-Print Network [OSTI]

Model???????????????????.31 3.5.1 Cutout??...????????????????????32 3.5.2 Antenna????????????...?????????..32 3.6 Preliminary Design????????????????????...33 IV. VIBRATION AND THERMAL CHARACTERISTICS OF SANDWICH RADIATOR PANEL....??..??????????????..35 4.1 Plate Theory???????????????????????..35 4.2 Free Vibration of a Simply Supported Rectangular Plate?????....36 4.3 Parametric Study of Simply Supported Plates and Sandwiches.???..38 4.3.1 Aluminum 2024-T3 Isotropic Plate???????????..38...

Mukundan, Sudharsan

2005-02-17T23:59:59.000Z

257

Structure-based drug mechanism study and inhibitor design targeting tuberculosis  

E-Print Network [OSTI]

...........................................................................................................40 Cloning, Expression and Purification ...........................................................40 Synthesis of the INH-NAD, PNH-NAD and BZH-NAD Adducts...............41 InhA Activity Assay..............................39 Figure 13 Crystal Structure of S94A Bound with the INH-NAD Adduct. ....................48 Figure 14 Synthesis of INH-NAD, BZH-NAD, and PNH-NAD...................................51 Figure 15 Surface Diagram of InhA in Complex with Hydrazide...

Wang, Feng

2009-05-15T23:59:59.000Z

258

Development of Design Criteria for Fluid Induced Structural Vibrations in Steam Generators and Heat Exchangers  

SciTech Connect (OSTI)

Flow-induced vibration in heat exchangers has been a major cause of concern in the nuclear industry for several decades. Many incidents of failure of heat exchangers due to apparent flow-induced vibration have been reported through the USNRC incident reporting system. Almost all heat exchangers have to deal with this problem during their operation. The phenomenon has been studied since the 1970s and the database of experimental studies on flow-induced vibration is constantly updated with new findings and improved design criteria for heat exchangers.

Uvan Catton; Vijay K. Dhir; Deepanjan Mitra; Omar Alquaddoomi; Pierangelo Adinolfi

2004-04-06T23:59:59.000Z

259

Hierarchical analysis of filtration. Progress report  

SciTech Connect (OSTI)

The original proposal for this work suggested two lines Of analysis that could be used to develop an hierarchical analysis of filtration. The first of these was semi-empirical and required the use of an angle-dependent rate coefficient to model the effect of particle inertia, while the second made use of a particle velocity decomposition that separated the velocity into an inertial part and a diffusive part. We have concluded that the semiempirical approach cannot lead to an efficient treatment of the filtration problem, and in this study we have dirrcted most of our effort toward the development of the velocity decomposition approach. Problems arise with the velocity decomposition method because the panicle tracking equation is hyperbolic in nature, and there are regions in the flow field where it is difficult to calculate the deterministic particle velocity. These problems can be avoided with an asymptotic analysis, and we have used this approach to determine single fiber efficiencies for small Stokes numbers. These efficiencies illustrate a minimum as a function of the particle diameter; however, the range of validity (in terms of the Stokes number) of the asymptotic method is uncertain. If the range of validity of the asymptotic expansion is suitable for the solution of practical problems, the current work on homogeneous filters should be expanded to included a broader range of values of the key parameters and then extended to include the case of heterogeneous filters. If the range of validity of the asymptotic method is not suitable for the solution of practical problems, the particle tracking problem must be resolved or we must move on to the use of Brownian dynamics. This approach is outlined, where we have indicated how Brownian dynamics may be incorporated into the method of volume averaging.

Quintard, M. [Ecole Nationale Superieure des Arts et Metiers, 33 - Talence (France). Lab. Energetique et Phenomenes de Transfert; Whitaker, S. [California Univ., Davis, CA (United States). Dept. of Chemical Engineering

1993-07-01T23:59:59.000Z

260

Development of Design Criteria for Fluid Induced Structural Vibration in Steam Generators and Heat Exchangers  

SciTech Connect (OSTI)

OAK-B135 Flow-induced vibration in heat exchangers has been a major cause of concern in the nuclear industry for several decades. Many incidents of failure of heat exchangers due to apparent flow-induced vibration have been reported through the USNRC incident reporting system. Almost all heat exchangers have to deal with this problem during their operation. The phenomenon has been studied since the 1970s and the database of experimental studies on flow-induced vibration is constantly updated with new findings and improved design criteria for heat exchangers. In the nuclear industry, steam generators are often affected by this problem. However, flow-induced vibration is not limited to nuclear power plants, but to any type of heat exchanger used in many industrial applications such as chemical processing, refrigeration and air conditioning. Specifically, shell and tube type heat exchangers experience flow-induced vibration due to the high velocity flow over the tube banks. Flow-induced vibration in these heat exchangers leads to equipment breakdown and hence expensive repair and process shutdown. The goal of this research is to provide accurate measurements that can help modelers to validate their models using the measured experimental parameters and thereby develop better design criteria for avoiding fluid-elastic instability in heat exchangers. The research is divided between two primary experimental efforts, the first conducted using water alone (single phase) and the second using a mixture of air or steam and water as the working fluid (two phase). The outline of this report is as follows: After the introduction to fluid-elastic instability, the experimental apparatus constructed to conduct the experiments is described in Chapter 2 along with the measurement procedures. Chapter 3 presents results obtained on the tube array and the flow loop, as well as techniques used in data processing. The project performance is described and evaluated in Chapter 4 followed by a discussion of publications and presentations relevant to the project in Chapter 5, while the conclusions and recommendations for future work are presented in Chapter 6.

Catton, Ivan; Dhir, Vijay K.; Alquaddoomi, O.S.; Mitra, Deepanjan; Adinolfi, Pierangelo

2004-03-26T23:59:59.000Z

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


261

Carbon composition with hierarchical porosity, and methods of preparation  

SciTech Connect (OSTI)

A method for fabricating a porous carbon material possessing a hierarchical porosity, the method comprising subjecting a precursor composition to a curing step followed by a carbonization step, the precursor composition comprising: (i) a templating component comprised of a block copolymer, (ii) a phenolic component, (iii) a dione component in which carbonyl groups are adjacent, and (iv) an acidic component, wherein said carbonization step comprises heating the precursor composition at a carbonizing temperature for sufficient time to convert the precursor composition to a carbon material possessing a hierarchical porosity comprised of mesopores and macropores. Also described are the resulting hierarchical porous carbon material, a capacitive deionization device in which the porous carbon material is incorporated, as well as methods for desalinating water by use of said capacitive deionization device.

Mayes, Richard T; Dai, Sheng

2014-10-21T23:59:59.000Z

262

Recent advances in alloy design of Ni{sub 3}Al alloys for structural use  

SciTech Connect (OSTI)

This is a comprehensive review of recent advances in R&D of Ni{sub 3}Al-based alloys for structural use at elevated temperatures in hostile environments. Recent studies indicate that polycrystalline Ni{sub 3}Al is intrinsically quite ductile at ambient temperatures, and its poor tensile ductility and brittle grain-boundary fracture are caused mainly by moisture-induced hydrogen embrittlement when the aluminide is tested in moisture- or hydrogen-containing environments. Tensile ductility is improved by alloying with substitutional and interstitial elements. Among these additives, B is most effective in suppressing environmental embrittlement and enhancing grain-boundary cohesion, resulting in a dramatic increase of tensile ductility at room temperature. Both B-doped and B-free Ni{sub 3}Al alloys exhibit brittle intergranular fracture and low ductility at intermediate temperatures (300-850 C) because of oxygen-induced embrittlement in oxidizing environments. Cr is found to be most effective in alleviating elevated-temperature embrittlement. Parallel efforts on alloy development using physical metallurgy principles have led to development of several Ni{sub 3}Al alloys for industrial use. The unique properties of these alloys are briefly discussed. 56 refs, 15 figs, 3 tabs.

Liu, C.T.; George, E.P.

1996-12-31T23:59:59.000Z

263

Multimedia autoannotation via hierarchical semantic ensembles Serhiy Koisnov and Stephane Marchand-Maillet  

E-Print Network [OSTI]

Multimedia autoannotation via hierarchical semantic ensembles Serhiy Koisnov and St´ephane Marchand kosinov,marchand¡ @cui.unige.ch Abstract This paper presents a hierarchical semantic ensem- ble learning

Genève, Université de

264

Structure-Based Design of Potent and Selective 3-Phosphoinositide-Dependent Kinase-1 (PDK1) Inhibitors  

SciTech Connect (OSTI)

Phosphoinositide-dependent protein kinase-1(PDK1) is a master regulator of the AGC family of kinases and an integral component of the PI3K/AKT/mTOR pathway. As this pathway is among the most commonly deregulated across all cancers, a selective inhibitor of PDK1 might have utility as an anticancer agent. Herein we describe our lead optimization of compound 1 toward highly potent and selective PDK1 inhibitors via a structure-based design strategy. The most potent and selective inhibitors demonstrated submicromolar activity as measured by inhibition of phosphorylation of PDK1 substrates as well as antiproliferative activity against a subset of AML cell lines. In addition, reduction of phosphorylation of PDK1 substrates was demonstrated in vivo in mice bearing OCl-AML2 xenografts. These observations demonstrate the utility of these molecules as tools to further delineate the biology of PDK1 and the potential pharmacological uses of a PDK1 inhibitor.

Medina, Jesus R.; Becker, Christopher J.; Blackledge, Charles W.; Duquenne, Celine; Feng, Yanhong; Grant, Seth W.; Heerding, Dirk; Li, William H.; Miller, William H.; Romeril, Stuart P.; Scherzer, Daryl; Shu, Arthur; Bobko, Mark A.; Chadderton, Antony R.; Dumble, Melissa; Gardiner, Christine M.; Gilbert, Seth; Liu, Qi; Rabindran, Sridhar K.; Sudakin, Valery; Xiang, Hong; Brady, Pat G.; Campobasso, Nino; Ward, Paris; Axten, Jeffrey M. (GSKPA)

2014-10-02T23:59:59.000Z

265

Compositionality in Synchronous Data Flow: Modular Code Generation from Hierarchical SDF Graphs  

E-Print Network [OSTI]

Compositionality in Synchronous Data Flow: Modular Code Generation from Hierarchical SDF Graphs in Synchronous Data Flow: Modular Code Generation from Hierarchical SDF Graphs Stavros Tripakis, Dai Bui, Bert of California, Berkeley stavros, daib, eal@eecs.berkeley.edu October 20, 2009 Abstract Hierarchical SDF models

266

Constraint Programming for Hierarchical Resource Allocation  

E-Print Network [OSTI]

of power plants are instances of tasks that can benefit tremendously from a self-organizing structure state by solving a constraint satisfaction problem (CSP). In this work, we emphasize a particular

Reif, Wolfgang

267

Spatial Data Structures Hanan Samet  

E-Print Network [OSTI]

Spatial Data Structures Hanan Samet Computer Science Department and Institute of Advanced Computer An overview is presented of the use of spatial data structures in spatial databases. The focus to the space occupied by it. Such techniques are known as spatial indexing methods. Hierarchical data

Shahabi, Cyrus

268

Materialization TradeOffs in Hierarchical Shortest Path Algorithms  

E-Print Network [OSTI]

Materialization Trade­Offs in Hierarchical Shortest Path Algorithms Shashi Shekhar, Andrew Fetterer] form the kernel of many important applica­ tions including transportation; water, electric, and gas utilities; telephone networks; urban management; sewer maintenance, and irrigation canal man­ agement

Shekhar, Shashi

269

Hierarchical Bayesian models for space-time air pollution data  

E-Print Network [OSTI]

Hierarchical Bayesian models for space-time air pollution data Sujit K. Sahu June 14, 2011 sets have led to a step change in the analysis of space-time air pollution data. Accurate predictions-time air pollution data and illustrate the benefits of modeling with a real data example on monitoring

Sahu, Sujit K

270

HIERARCHICAL MANAGEMENT OF BATTLEFIELD NETWORKS WITH THE SHAMAN MANAGEMENT SYSTEM  

E-Print Network [OSTI]

HIERARCHICAL MANAGEMENT OF BATTLEFIELD NETWORKS WITH THE SHAMAN MANAGEMENT SYSTEM Adarshpal S with a description of the SHAMAN system and briefly introduces its applica- tions to the management of tactical for MANagement). This management system developed at the Network Management Laboratory of the Univer- sity

Sethi, Adarshpal

271

Hierarchical Beta Processes and the Indian Buffet Romain Thibaux  

E-Print Network [OSTI]

Hierarchical Beta Processes and the Indian Buffet Process Romain Thibaux Computer Science Division Department of Statistics November 5, 2006 Abstract We show that the beta process is the de Finetti mixing distribution underlying the Indian buffet process of [2]. This result shows that the beta process plays

Sekhon, Jasjeet S.

272

Hierarchical Control and Management of Virtual Microgrids for Vehicle Electrification  

E-Print Network [OSTI]

of electrical power generation and delivery. A Smart Grid is an intelligent and automated energy grid and new types of loads such as plug-in (hybrid) electric vehicles (PEVs); (2) optimizing systemHierarchical Control and Management of Virtual Microgrids for Vehicle Electrification Feng Lina

Zhang, Hongwei

273

A Hierarchical Checkpointing Protocol for Parallel Applications in Cluster Federations  

E-Print Network [OSTI]

A Hierarchical Checkpointing Protocol for Parallel Applications in Cluster Federations S federation. As a cluster federation comprises of a large number of nodes, there is a high probability fits to the characteristics of a cluster federation (large number of nodes, high latency and low

Paris-Sud XI, Université de

274

A Hierarchical Distributed Approach for Mining Molecular Fragments  

E-Print Network [OSTI]

for several activities, such as inhibition of HIV or cancer cells. The screened compounds are recordedA Hierarchical Distributed Approach for Mining Molecular Fragments Christoph Sieb1 , Giuseppe Di Fatta2 , and Michael R. Berthold1 1 ALTANA Chair for Bioinformatics and Information Mining Department

Berthold, Michael R.

275

A Hierarchical Model for Estimating the Reliability of Complex Systems  

E-Print Network [OSTI]

an approximation to the joint posterior distribution on the total system reliability was obtained. Many reliability or bounding moments of the system reliability posterior distribution (Cole (1975), Mastran (1976), DostalA Hierarchical Model for Estimating the Reliability of Complex Systems Valen E. Johnson, Todd L

Reese, Shane

276

A simple model of the hierarchical formation of galaxies  

E-Print Network [OSTI]

We develop a simple, fast and predictive model of the hierarchical formation of galaxies which is in quantitative agreement with observations. Comparing simulations with observations we place constraints on the density of the universe and on the power spectrum of density fluctuations.

B. Hoeneisen

2000-09-05T23:59:59.000Z

277

Hierarchical regularization for edge-preserving reconstruction of PET images  

E-Print Network [OSTI]

Hierarchical regularization for edge-preserving reconstruction of PET images Johnathan M. Bardsley.somersalo@case.edu Abstract. The data in PET emission and transmission tomography and in low dose X-ray tomography, consists that the algorithm gives good quality reconstructions for both emission and transmission PET problems in an efficient

Bardsley, John

278

Hierarchical regularization for edge-preserving reconstruction of PET images  

E-Print Network [OSTI]

1 Hierarchical regularization for edge-preserving reconstruction of PET images Johnathan M. Bardsley , Daniela Calvetti, and Erkki Somersalo Abstract--The data in PET emission and transmission tomog for both emission and transmission PET problems at very low computational cost. Index Terms

Bardsley, John

279

Using Hierarchical Simplicial Meshes to Render Atmospheric Effects  

E-Print Network [OSTI]

Using Hierarchical Simplicial Meshes to Render Atmospheric Effects F. Betul Atalay David M. Mount natural phenomena. An important problem in this area is that of rendering scenes containing atmospheric and smoke. Generating photorealistic renderings through ray-tracing is computationally very demanding

Atalay, F. Betül

280

Hierarchical Distributed Task Allocation for Multi-Robot Exploration  

E-Print Network [OSTI]

the exploration process via a market-based mechanism. That is, each robot decides for itself whether it is moreHierarchical Distributed Task Allocation for Multi-Robot Exploration John Hawley and Zack Butler Abstract In order to more effectively explore a large unknown area, multiple robots may be employed to work

Butler, Zack

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


281

Bayesian hierarchical reconstruction of protein profiles including a digestion model  

E-Print Network [OSTI]

Bayesian hierarchical reconstruction of protein profiles including a digestion model Pierre to recover the protein biomarkers content in a robust way. We will focus on the digestion step since and each branch to a molecular processing such as digestion, ionisation and LC-MS separation

Paris-Sud XI, Université de

282

Measuring Heterogeneity in Forensic Databases Using Hierarchical Bayes Models  

E-Print Network [OSTI]

Measuring Heterogeneity in Forensic Databases Using Hierarchical Bayes Models By Kathryn Roeder, as currently defined, do not uniquely identify individuals. For criminal cases involving DNA evidence, forensic­ ing profiles are based on reference populations maintained by forensic testing laboratories. Each

283

Biotemplated Hierarchical Nanostructure of Layered Double  

E-Print Network [OSTI]

and low-cost by utilizing biotemplate and coat- ing it uniformly up to atomic thickness with an inorganic toward future innovations in dis- covering new structures and improving cor- responding performances.13 by biological templates. For instance, researchers can fabricate such biostructures with high reproducibility

Wang, Zhong L.

284

Hierarchical implementation of a wireless communications system  

E-Print Network [OSTI]

Implementafion Method. 1. 3 Literature Survey. 2 9 11 II TRANSCEIVER SYSTEM-LEVEL DESIGN AND MODELING. . . . . . 15 2. 1 2. 2 2. 3 2. 4 The Personal Communications System. System Specifications . 15 19 Wireless Communicafions Channel Description... 366 IX EXPER~AL RESULTS . 372 9. 1 9. 2 9. 3 9. 4 9. 5 9. 6 9. 7 9. 8 9. 9 Testing Strategy Convolutional Encoder . 64-Ary Modulator . Long-Code Sequence Generator and Spreader . . . . . . . . . . . . . . . . I and Q Channel Sequence...

Mayhugh, Terry L

2012-06-07T23:59:59.000Z

285

A Simplified Hierarchical Dynamic Quantum Secret Sharing Protocol with Added Features  

E-Print Network [OSTI]

Generalizing the notion of dynamic quantum secret sharing (DQSS), a simplified protocol for hierarchical dynamic quantum secret sharing (HDQSS) is proposed and it is shown that the protocol can be implemented using any existing protocol of quantum key distribution, quantum key agreement or secure direct quantum communication. The security of this proposed protocol against eavesdropping and collusion attacks is discussed with specific attention towards the issues related to the composability of the subprotocols that constitute the proposed protocol. The security and qubit efficiency of the proposed protocol is also compared with that of other existing protocols of DQSS. Further, it is shown that it is possible to design a semi-quantum protocol of HDQSS and in principle, the protocols of HDQSS can be implemented using any quantum state. It is also noted that the completely orthogonal-state-based realization of HDQSS protocol is possible and that HDQSS can be experimentally realized using a large number of alternative approaches.

Sandeep Mishra; Chitra Shukla; Anirban Pathak; R. Srikanth; Anu Venugopalan

2014-09-06T23:59:59.000Z

286

Producibility in hierarchical self-assembly Three results are shown on producibility in the hierarchical model of tile self-assembly.  

E-Print Network [OSTI]

Producibility in hierarchical self-assembly David Doty Abstract Three results are shown on producibility in the hierarchical model of tile self-assembly. It is shown that a simple greedy polynomial, an assembly is considered terminal if nothing can attach to it; viewing self-assembly as a computation

Doty, David

287

SAR Imagery Segmentation by Statistical Region Growing and Hierarchical Merging  

SciTech Connect (OSTI)

This paper presents an approach to accomplish synthetic aperture radar (SAR) image segmentation, which are corrupted by speckle noise. Some ordinary segmentation techniques may require speckle filtering previously. Our approach performs radar image segmentation using the original noisy pixels as input data, eliminating preprocessing steps, an advantage over most of the current methods. The algorithm comprises a statistical region growing procedure combined with hierarchical region merging to extract regions of interest from SAR images. The region growing step over-segments the input image to enable region aggregation by employing a combination of the Kolmogorov-Smirnov (KS) test with a hierarchical stepwise optimization (HSWO) algorithm for the process coordination. We have tested and assessed the proposed technique on artificially speckled image and real SAR data containing different types of targets.

Ushizima, Daniela Mayumi; Carvalho, E.A.; Medeiros, F.N.S.; Martins, C.I.O.; Marques, R.C.P.; Oliveira, I.N.S.

2010-05-22T23:59:59.000Z

288

The Energy Policy Pyramid - A Hierarchal Tool for Decision Makers  

E-Print Network [OSTI]

often fail to account for all costs of fuel choices. The cost and benefit of the alternative in both an energy accounting system based on Btus (Joules) as well as pollution and other benefits must be considered. In this decade, hydrogen has been...THE ENERGY POLICY PYRAMID – A HIERARCHAL TOOL FOR DECISION MAKERS ROBIN K. VIEIRA, DIRECTOR, BRD DIV. , FLORIDA SOLAR ENERGY CENTER, COCOA, FL ABSTRACT Policies of dealing with energy programs are often misdirected. Decision makers...

Vieira, R. K.

2006-01-01T23:59:59.000Z

289

STRUCTURAL ENGINEERING MINOR The Minor in Structural Engineering is a unique opportunity offered to students of the College of Environmental Design to  

E-Print Network [OSTI]

of steel, concrete or timber (CE122N, CE123N, CE124) These basic courses are complemented by additional exist in major architectural-engineering companies that appreciate the holistic approach to design: Ove of the joint degree are also employed with smaller companies emphasizing either architectural design

Alvarez-Cohen, Lisa

290

Seismic design of a current woodframe structure and study of innovative products and damping systems in wood construction  

E-Print Network [OSTI]

Wood structures have seen resurgence in popularity over the past several decades, especially in Western States of America, such as California. The industry keeps creating new structural wood products of exceptional strength, ...

Mahjoub, Nina A. (Nina Azadeh)

2007-01-01T23:59:59.000Z

291

Vehicle Technologies Office Merit Review 2014: Coupled Hierarchical Models for Thermal, Mechanical, Electrical and Electrochemical Processes  

Broader source: Energy.gov [DOE]

Presentation given by [company name] at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about coupled hierarchical models...

292

E-Print Network 3.0 - approximate hierarchical methods Sample...  

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

34 Infinite Hidden Markov Models via the Hierarchical Dirichlet Process Matthew J. Beal (presenting author) beal@cs.toronto.edu Summary: a heuristic approximation to Gibbs...

293

A novel biomimetic approach to the design of high-performance ceramic/metal composites  

SciTech Connect (OSTI)

The prospect of extending natural biological design to develop new synthetic ceramic-metal composite materials is examined. Using ice-templating of ceramic suspensions and subsequent metal infiltration, we demonstrate that the concept of ordered hierarchical design can be applied to create fine-scale laminated ceramic-metal (bulk) composites that are inexpensive, lightweight and display exceptional damage-tolerance properties. Specifically, Al{sub 2}O{sub 3}/Al-Si laminates with ceramic contents up to approximately 40 vol% and with lamellae thicknesses down to 10 {micro}m were processed and characterized. These structures achieve an excellent fracture toughness of 40 MPa{radical}m at a tensile strength of approximately 300 MPa. Salient toughening mechanisms are described together with further toughening strategies.

Launey, Maximilien E.; Munch, Etienne; Alsem, Daan Hein; Saiz, Eduardo; Tomsia, Antoni P.; Ritchie, Robert O.

2009-08-01T23:59:59.000Z

294

Structural genomics - A goldmine of blueprints for structure...  

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

- A goldmine of blueprints for structure-based drug design. Structural genomics - A goldmine of blueprints for structure-based drug design. Abstract: In late 2007 the National...

295

Application of structural-mechanics methods to the design of large tandem-mirror fusion devices (MFTF-B). Revision 1  

SciTech Connect (OSTI)

The Mirror Fusion Test Facility (MFTF-B) at Lawrence Livermore National Laboratory requires state-of-the-art structural-mechanics methods to deal with access constraints for plasma heating and diagnostics, alignment requirements, and load complexity and variety. Large interactive structures required an integrated analytical approach to achieve a reasonable level of overall system optimization. The Tandem Magnet Generator (TMG) creates a magnet configuration for the EFFI calculation of electromagnetic-field forces that, coupled with other loads, form the input loading to magnet and vessel finite-element models. The analytical results provide the data base for detailed design of magnet, vessel, foundation, and interaction effects. 13 refs.

Karpenko, V.N.; Ng, D.S.

1985-08-15T23:59:59.000Z

296

A Scan-based Attack on Elliptic Curve Cryptosystems in presence of Industrial Design-for-Testability Structures  

E-Print Network [OSTI]

A Scan-based Attack on Elliptic Curve Cryptosystems in presence of Industrial Design-based attack on hardware implementations of Elliptic Curve Cryptosystems (ECC). Several up-to-date Design aspects of the proposed scan-based attack are described, namely timing and leakage analysis that allows

Paris-Sud XI, Université de

297

Design optimization methodology for power converters based on global energy requirement criteria. Application to a DC-DC flyback structure  

E-Print Network [OSTI]

for power electronic converters according to the Global Energy Requirement (GER) criterion, i.e. the primary-design converters in order to take its environmental impacts (here, only its global primary energy consumptionDesign optimization methodology for power converters based on global energy requirement criteria

Paris-Sud XI, Université de

298

Analysis of mechanical effects caused by plasma disruptions in the European BOT solid breeder blanket design with MANET as structural material  

SciTech Connect (OSTI)

The Karlsruhe Nuclear Center is developing, through design and experimental work, a BOT (Breeder Out of Tube) Helium Cooled Solid Breeder Blanket for a DEMO application. One of the crucial problems in the blanket design is to demonstrate the capability of the structure to withstand the mechanical effects of a major plasma disruption as extrapolated to DEMO from the experience of present machines. In this paper the results of the assessment work are presented; the acceptability of the design is discussed on the basis of a stress analysis of the structure under combined thermal and electromagnetic loads. The martensitic steel MANET has been chosen as structural material, because it is able to withstand the high neutron fluence in Demo (70 dpa) without appreciably swelling and has good thermal-mechanical properties - lower thermal expansion and higher strength - in comparison to AISI 316L steel. As far as it concerns the mechanical effects of plasma disruptions, MANET presents two important features which have been carefully investigated in the assessment: the magnetic properties of the material and the degradation of the fracture toughness behavior under irradiation.

Boccaccini, L.V.; Ruatto, P. [Institut fuer Neutronenphysik und Reaktortechnik, Karlsruhe (Germany)

1994-12-31T23:59:59.000Z

299

Orc Notation Structured Wide-Area Programming  

E-Print Network [OSTI]

Orc Notation Structured Wide-Area Programming Jayadev Misra Department of Computer Science University of Texas at Austin http://orc.csres.utexas.edu April 12, 2010 Rennes, France #12;Orc Notation hierarchical structure. #12;Orc Notation Orc · Goal: Internet scripting language. · Next: Component integration

Misra, Jayadev

300

Structured Wide-Area Programming: Orc Calculus  

E-Print Network [OSTI]

Structured Wide-Area Programming: Orc Calculus Jayadev Misra Department of Computer Science University of Texas at Austin http://orc.csres.utexas.edu #12;Concurrency · ubiquitous. · difficult interactions. · Support hierarchical structure. #12;Orc · Initial Goal: Internet scripting language. · Next

Misra, Jayadev

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


301

A Hierarchical Security Architecture for Cyber-Physical Systems  

SciTech Connect (OSTI)

Security of control systems is becoming a pivotal concern in critical national infrastructures such as the power grid and nuclear plants. In this paper, we adopt a hierarchical viewpoint to these security issues, addressing security concerns at each level and emphasizing a holistic cross-layer philosophy for developing security solutions. We propose a bottom-up framework that establishes a model from the physical and control levels to the supervisory level, incorporating concerns from network and communication levels. We show that the game-theoretical approach can yield cross-layer security strategy solutions to the cyber-physical systems.

Quanyan Zhu; Tamer Basar

2011-08-01T23:59:59.000Z

302

Time Synchronization in Hierarchical TESLA Wireless Sensor Networks  

SciTech Connect (OSTI)

Time synchronization and event time correlation are important in wireless sensor networks. In particular, time is used to create a sequence events or time line to answer questions of cause and effect. Time is also used as a basis for determining the freshness of received packets and the validity of cryptographic certificates. This paper presents secure method of time synchronization and event time correlation for TESLA-based hierarchical wireless sensor networks. The method demonstrates that events in a TESLA network can be accurately timestamped by adding only a few pieces of data to the existing protocol.

Jason L. Wright; Milos Manic

2009-08-01T23:59:59.000Z

303

Plan schematization : a computational approach to morphological structure of architectural space  

E-Print Network [OSTI]

In this thesis an architectural design theory is premised so that plan making can start from a 'space scheme' which is a description of 'hierarchic balloon representation'. The space organization of a plan is described in ...

Yoon, Chae-Shin

1994-01-01T23:59:59.000Z

304

Aalborg Universitet Frequency Stability of Hierarchically Controlled Hybrid Photovoltaic-Battery-  

E-Print Network [OSTI]

-HP microgrid, including 2 MWp PV station, 15.2 MWh battery storage system, and 12.8 MVA hydropower plantAalborg Universitet Frequency Stability of Hierarchically Controlled Hybrid Photovoltaic-Battery of Hierarchically Controlled Hybrid Photovoltaic-Battery-Hydropower Microgrids. In Proceedings of the 2014 IEEE

Vasquez, Juan Carlos

305

A Hierarchical Bayesian Approach to the Revisiting Problem in Mobile Robot Map Building  

E-Print Network [OSTI]

present an application of hierarchical Bayesian estimation to robot map build- ing. The revisiting problemA Hierarchical Bayesian Approach to the Revisiting Problem in Mobile Robot Map Building Dieter Fox1 occurs when a robot has to decide whether it is seeing a previously- built portion of a map

Konolige, Kurt

306

Hierarchical Extraction of Iso-Surfaces with Semi-Regular Meshes Kai Hormann  

E-Print Network [OSTI]

Hierarchical Extraction of Iso-Surfaces with Semi-Regular Meshes Kai Hormann Ulf Labsik Martin and final result of our hierarchical iso-surface extraction algorithm. Abstract In this paper we present a novel approach to iso-surface extrac- tion which is based on a multiresolution volume data

Hormann, Kai

307

15.13 A Hierarchical Volume Renderer Tool for the Atmospheric Sciences G. Romine*,1  

E-Print Network [OSTI]

15.13 A Hierarchical Volume Renderer Tool for the Atmospheric Sciences G. Romine*,1 , D. Porter2 rendering tool in meteorology. While an excellent tool, the interactive surface rendering performance visualization tools for interactive analysis. The Hierarchical Volume Renderer (HVR) is an alternative

Wilhelmson, Robert

308

Pressure loadings of Soviet-designed VVER (Water-Cooled, Water-Moderated Energy Reactor) reactor release mitigation structures from large-break LOCAs  

SciTech Connect (OSTI)

Analyses have been carried out of the pressurization of the accident release mitigation structures of Soviet-designed VVER (Water-Cooled, Water-Moderated Energy Reactor) pressurized water reactors following large-break loss-of-coolant accidents. Specific VVER systems for which calculations were performed are the VVER-440 model V230, VVER-440 model V213, and VVER-1000 model V320. Descriptions of the designs of these and other VVER models are contained in the report DOE/NE-0084. The principal objective of the current analyses is to calculate the time dependent pressure loadings inside the accident localization or containment structures immediately following the double-ended guillotine rupture of a primary coolant pipe. In addition, the pressures are compared with the results of calculations of the response of the structures to overpressure. Primary coolant system thermal hydraulic conditions and the fluid conditions at the break location were calculated with the RETRAN-02 Mod2 computer code (Agee, 1984). Pressures and temperatures inside the building accident release mitigation structures were obtained from the PACER (Pressurization Accompanying Coolant Escape from Ruptures) multicompartment containment analysis code developed at Argonne National Laboratory. The analyses were carried out using best estimate models and conditions rather than conservative, bounding-type assumptions. In particular, condensation upon structure and equipment was calculated using correlations based upon analyses of the HDR, Marviken, and Battelle Frankfurt containment loading experiments. The intercompartment flow rates incorporate an effective discharge coefficient and liquid droplet carryover fraction given by expressions of Schwan determined from analyses of the Battelle Frankfurt and Marviken tests. 5 refs., 4 figs.

Sienicki, J.J.; Horak, W.C. (Argonne National Lab., IL (USA); Brookhaven National Lab., Upton, NY (USA))

1989-01-01T23:59:59.000Z

309

DESIGN, IMPLEMENTATION AND RELIABILITY ISSUES I strive for structural simplicity.... the technical man must not be lost in his own  

E-Print Network [OSTI]

on and off automatically. Other parts of the TMD include restraint systems for TMDs including anti-yaw torque loading conditions. This chapter addresses the design and implementation issues and also quantitatively their integration into the overall system. Moreover, the adoption of semi-active TLCDs requires additional equipment

Kareem, Ahsan

310

Multi-step self-assembly route to three-dimensional block copolymer-semiconducting nanoparticle photonic arrays with structural hierarchy.  

E-Print Network [OSTI]

??A new multi-step self-assembly route to polymer-semiconducting nanoparticle photonic structures is described. The multi-step self-assembly strategy targets complex hierarchical structures in which organization of cadmium… (more)

Yusuf, Huda

2009-01-01T23:59:59.000Z

311

Determining soft segment structure-property effects in the enhancement of segmented polyurethane performance  

E-Print Network [OSTI]

Liquid Crystalline Elastomer (LCE)-inspired segmented polyurethane elastomers possessing widely different extents of ordering were created to mimic the hierarchical structure of the continuous matrix and superior mechanical ...

Waletzko, Ryan Scott

2009-01-01T23:59:59.000Z

312

Regulatory Safety Issues in the Structural Design Criteria of ASME Section III Subsection NH and for Very High Temperatures for VHTR & GEN IV  

SciTech Connect (OSTI)

The objective of this task is to identify issues relevant to ASME Section III, Subsection NH [1], and related Code Cases that must be resolved for licensing purposes for VHTGRs (Very High Temperature Gas Reactor concepts such as those of PBMR, Areva, and GA); and to identify the material models, design criteria, and analysis methods that need to be added to the ASME Code to cover the unresolved safety issues. Subsection NH was originally developed to provide structural design criteria and limits for elevated-temperature design of Liquid Metal Fast Breeder Reactor (LMFBR) systems and some gas-cooled systems. The U.S. Nuclear Regulatory Commission (NRC) and its Advisory Committee for Reactor Safeguards (ACRS) reviewed the design limits and procedures in the process of reviewing the Clinch River Breeder Reactor (CRBR) for a construction permit in the late 1970s and early 1980s, and identified issues that needed resolution. In the years since then, the NRC and various contractors have evaluated the applicability of the ASME Code and Code Cases to high-temperature reactor designs such as the VHTGRs, and identified issues that need to be resolved to provide a regulatory basis for licensing. This Report describes: (1) NRC and ACRS safety concerns raised during the licensing process of CRBR , (2) how some of these issues are addressed by the current Subsection NH of the ASME Code; and (3) the material models, design criteria, and analysis methods that need to be added to the ASME Code and Code Cases to cover unresolved regulatory issues for very high temperature service.

William J. O’Donnell; Donald S. Griffin

2007-05-07T23:59:59.000Z

313

Crystal Structures of the GCaMP Calcium Sensor Reveal the Mechanism of Fluorescence Signal Change and Aid Rational Design  

SciTech Connect (OSTI)

The genetically encoded calcium indicator GCaMP2 shows promise for neural network activity imaging, but is currently limited by low signal-to-noise ratio. We describe x-ray crystal structures as well as solution biophysical and spectroscopic characterization of GCaMP2 in the calcium-free dark state, and in two calcium-bound bright states: a monomeric form that dominates at intracellular concentrations observed during imaging experiments and an unexpected domain-swapped dimer with decreased fluorescence. This series of structures provides insight into the mechanism of Ca{sup 2+}-induced fluorescence change. Upon calcium binding, the calmodulin (CaM) domain wraps around the M13 peptide, creating a new domain interface between CaM and the circularly permuted enhanced green fluorescent protein domain. Residues from CaM alter the chemical environment of the circularly permuted enhanced green fluorescent protein chromophore and, together with flexible inter-domain linkers, block solvent access to the chromophore. Guided by the crystal structures, we engineered a series of GCaMP2 point mutants to probe the mechanism of GCaMP2 function and characterized one mutant with significantly improved signal-to-noise. The mutation is located at a domain interface and its effect on sensor function could not have been predicted in the absence of structural data.

Akerboom, Jasper; Velez Rivera, Jonathan D.; Rodriguez Guilbe, María M.; Alfaro Malavé, Elisa C.; Hernandez, Hector H.; Tian, Lin; Hires, S. Andrew; Marvin, Jonathan S.; Looger, Loren L.; Schreiter, Eric R.; (MIT); (Puerto Rico); (HHMI)

2009-03-16T23:59:59.000Z

314

Computer Aided Multi-scale Design of SiC-Si3N4 Nanoceramic Composites for High-Temperature Structural Applications  

SciTech Connect (OSTI)

It is estimated that by using better and improved high temperature structural materials, the power generation efficiency of the power plants can be increased by 15% resulting in significant cost savings. One such promising material system for future high-temperature structural applications in power plants is Silicon Carbide-Silicon Nitride (SiC-Si{sub 3}N{sub 4}) nanoceramic matrix composites. The described research work focuses on multiscale simulation-based design of these SiC-Si{sub 3}N{sub 4} nanoceramic matrix composites. There were two primary objectives of the research: (1) Development of a multiscale simulation tool and corresponding multiscale analyses of the high-temperature creep and fracture resistance properties of the SiC-Si{sub 3}N{sub 4} nanocomposites at nano-, meso- and continuum length- and timescales; and (2) Development of a simulation-based robust design optimization methodology for application to the multiscale simulations to predict the range of the most suitable phase morphologies for the desired high-temperature properties of the SiC-Si{sub 3}N{sub 4} nanocomposites. The multiscale simulation tool is based on a combination of molecular dynamics (MD), cohesive finite element method (CFEM), and continuum level modeling for characterizing time-dependent material deformation behavior. The material simulation tool is incorporated in a variable fidelity model management based design optimization framework. Material modeling includes development of an experimental verification framework. Using material models based on multiscaling, it was found using molecular simulations that clustering of the SiC particles near Si{sub 3}N{sub 4} grain boundaries leads to significant nanocomposite strengthening and significant rise in fracture resistance. It was found that a control of grain boundary thicknesses by dispersing non-stoichiometric carbide or nitride phases can lead to reduction in strength however significant rise in fracture strength. The temperature dependent strength and microstructural stability was also significantly depended upon the dispersion of new phases at grain boundaries. The material design framework incorporates high temperature creep and mechanical strength data in order to develop a collaborative multiscale framework of morphology optimization. The work also incorporates a computer aided material design dataset development procedure where a systematic dataset on material properties and morphology correlation could be obtained depending upon a material processing scientist's requirements. Two different aspects covered under this requirement are: (1) performing morphology related analyses at the nanoscale and at the microscale to develop a multiscale material design and analyses capability; (2) linking material behavior analyses with the developed design tool to form a set of material design problems that illustrate the range of material design dataset development that could be performed. Overall, a software based methodology to design microstructure of particle based ceramic nanocomposites has been developed. This methodology has been shown to predict changes in phase morphologies required for achieving optimal balance of conflicting properties such as minimal creep strain rate and high fracture strength at high temperatures. The methodology incorporates complex material models including atomistic approaches. The methodology will be useful to design materials for high temperature applications including those of interest to DoE while significantly reducing cost of expensive experiments.

Vikas Tomer; John Renaud

2010-08-31T23:59:59.000Z

315

Conceptual Design Report Cask Loadout Sys and Cask Drop Redesign for the Immersion Pail Support Structure and Operator Interface Platform at 105 K West  

SciTech Connect (OSTI)

This conceptual design report documents the redesign of the IPSS and the OIP in the 105 KW Basin south loadout pit due to a postulated cask drop accident, as part of Project A.5/A.6, Canister Transfer Facility Modifications. Project A.5/A.6 involves facility modifications needed to transfer fuel from the basin into the cask-MCO. The function of the IPSS is to suspend, guide, and position the immersion pail. The immersion pail protects the cask-MCO from contamination by basin water and acts as a lifting device for the cask-MCO. The OIP provides operator access to the south loadout pit. Previous analyses studied the effects of a cask-MCO drop on the south loadout pit concrete structure and on the IPSS. The most recent analysis considered the resulting loads at the pit slab/wall joint (Kanjilal, 1999). This area had not been modeled previously, and the analysis results indicate that the demand capacity exceeds the allowable at the slab/wall joint. The energy induced on the south loadout pit must be limited such that the safety class function of the basin is maintained. The solution presented in this CDR redesigns the IPSS and the OIP to include impact-absorbing features that will reduce the induced energy. The impact absorbing features of the new design include: Impact-absorbing material at the IPSS base and at the upper portion of the IPSS legs. A sleeve which provides a hydraulic means of absorbing energy. Designing the OIP to act as an impact absorber. The existing IPSS structure in 105 KW will be removed. This conceptual design considers only loads resulting from drops directly over the IPSS and south loadout pit area. Drops in other areas of the basin are not considered, and will be covered as part of a future revision to this CDR.

LANGEVIN, A.S.

1999-07-12T23:59:59.000Z

316

Argument structure hierarchy system and method for facilitating analysis and decision-making processes  

DOE Patents [OSTI]

A system and method for facilitating decision-making comprising a computer program causing linkage of data representing a plurality of argument structure units into a hierarchical argument structure. Each argument structure unit comprises data corresponding to a hypothesis and its corresponding counter-hypothesis, data corresponding to grounds that provide a basis for inference of the hypothesis or its corresponding counter-hypothesis, data corresponding to a warrant linking the grounds to the hypothesis or its corresponding counter-hypothesis, and data corresponding to backing that certifies the warrant. The hierarchical argument structure comprises a top level argument structure unit and a plurality of subordinate level argument structure units. Each of the plurality of subordinate argument structure units comprises at least a portion of the grounds of the argument structure unit to which it is subordinate. Program code located on each of a plurality of remote computers accepts input from one of a plurality of contributors. Each input comprises data corresponding to an argument structure unit in the hierarchical argument structure and supports the hypothesis or its corresponding counter-hypothesis. A second programming code is adapted to combine the inputs into a single hierarchical argument structure. A third computer program code is responsive to the second computer program code and is adapted to represent a degree of support for the hypothesis and its corresponding counter-hypothesis in the single hierarchical argument structure.

Janssen, Terry (9840 Faust Dr., Vienna, VA 22182)

2000-01-01T23:59:59.000Z

317

Compiling software for a hierarchical distributed processing system  

DOE Patents [OSTI]

Compiling software for a hierarchical distributed processing system including providing to one or more compiling nodes software to be compiled, wherein at least a portion of the software to be compiled is to be executed by one or more nodes; compiling, by the compiling node, the software; maintaining, by the compiling node, any compiled software to be executed on the compiling node; selecting, by the compiling node, one or more nodes in a next tier of the hierarchy of the distributed processing system in dependence upon whether any compiled software is for the selected node or the selected node's descendents; sending to the selected node only the compiled software to be executed by the selected node or selected node's descendent.

Archer, Charles J; Blocksome, Michael A; Ratterman, Joseph D; Smith, Brian E

2013-12-31T23:59:59.000Z

318

Thermoelectric Materials by Design: Computational Theory and...  

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

by Design: Computational Theory and Structure Thermoelectric Materials by Design: Computational Theory and Structure Presentation from the U.S. DOE Office of Vehicle Technologies...

319

Thermoelectric Materials by Design, Computational Theory and...  

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

by Design, Computational Theory and Structure Thermoelectric Materials by Design, Computational Theory and Structure 2009 DOE Hydrogen Program and Vehicle Technologies Program...

320

Title: A Hierarchical, Geospatial Approach to Mitigate Shrub Invasion in the  

E-Print Network [OSTI]

Title: A Hierarchical, Geospatial Approach to Mitigate Shrub Invasion in the Southwestern United and decision products will be based on geospatial modeling coupled with field experiments and draw on a wealth

Nishiguchi, Michele

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Generating Hierarchical Summaries for Web Searches Dawn J. Lawrie and W. Bruce Croft  

E-Print Network [OSTI]

Generating Hierarchical Summaries for Web Searches Dawn J. Lawrie and W. Bruce Croft Department the most. The hierarchy provides an alternative to Copyright is held by the author/owner. SIGIR'03, July 28

Lawrie, Dawn J.

322

Generating Hierarchical Summaries for Web Searches Dawn J. Lawrie and W. Bruce Croft  

E-Print Network [OSTI]

Generating Hierarchical Summaries for Web Searches Dawn J. Lawrie and W. Bruce Croft Department summaries. This Copyright is held by the author/owner. SIGIR'03, July 28­August 1, 2003, Toronto, Canada

Lawrie, Dawn J.

323

InterTwinkles : online tools for non-hierarchical, consensus-oriented decision making  

E-Print Network [OSTI]

Non-hierarchical, participatory, consensus-based decision making has seen an explosion in popularity in recent years. The traditional techniques of formal consensus, however, are limited to face-to-face meetings, which can ...

DeTar, Charles (Charles Frederick)

2013-01-01T23:59:59.000Z

324

Structural Design and Analysis for a Double-Band Cold Mass Support of the MICE Coupling Magnet  

SciTech Connect (OSTI)

The cooling channel of Muon Ionization Cooling Experiment (MICE) consists of eighteen superconducting solenoid coils, which are magnetically hooked together. A pair ofcoupling magnets operating at 4 K is applied to produce up to .6 T magnetic field on the magnet centerline to keep muon beam within the RF cavity windows. The peak magnetic force on the coupling magnet from other magnets in the MICE channel is up to 500 kN inlongitudinal direction, and the requirements for magnet center and axis azimuthal angle at 4 K are stringent. A self-centered double-band cold mass support system with intermediatethermal interruption is applied for the coupling magnet. The physical center of the magnet does not change as it is cooled down from 300 K to 4.2 K with this support system. In this paper the design parameters of the support system are discussed. The integral analysis of the support system using FEA method was carried out to etermine the tension forces in bands when various loads are applied. The magnet centre displacement and concentricity deviation form the axis of the warm bore are obtained, and the peak tension in support bands is also determined according to the simulation results.

Green, Michael A; Wu, Hong; Liu, X. K.; Wang, Li; Li, S. Y.; Guo, XingLong; Pan, Heng; Xu, FengYu

2009-07-01T23:59:59.000Z

325

A Hierarchical Manufacturing Route Planner Based on Heuristic Algorithm: Design and Evaluation  

E-Print Network [OSTI]

materials and components in various stages. Today, computerized machines perform many operations. Much. Ali A. Al-Titinchi Electrical & Computer Eng. Dept, Applied Science University, Jordan. email:aaali8 consists of two levels; the cell level, which controls the jobs flow between cells, and the machine level

326

Work Breakdown Structure and Plant/Equipment Designation System Numbering Scheme for the High Temperature Gas- Cooled Reactor (HTGR) Component Test Capability (CTC)  

SciTech Connect (OSTI)

This white paper investigates the potential integration of the CTC work breakdown structure numbering scheme with a plant/equipment numbering system (PNS), or alternatively referred to in industry as a reference designation system (RDS). Ideally, the goal of such integration would be a single, common referencing system for the life cycle of the CTC that supports all the various processes (e.g., information, execution, and control) that necessitate plant and equipment numbers be assigned. This white paper focuses on discovering the full scope of Idaho National Laboratory (INL) processes to which this goal might be applied as well as the factors likely to affect decisions about implementation. Later, a procedure for assigning these numbers will be developed using this white paper as a starting point and that reflects the resolved scope and outcome of associated decisions.

Jeffrey D Bryan

2009-09-01T23:59:59.000Z

327

A Hierarchical Framework for Demand-Side Frequency Control  

SciTech Connect (OSTI)

With large-scale plans to integrate renewable generation, more resources will be needed to compensate for the uncertainty associated with intermittent generation resources. Under such conditions, performing frequency control using only supply-side resources become not only prohibitively expensive but also technically difficult. It is therefore important to explore how a sufficient proportion of the loads could assume a routine role in frequency control to maintain the stability of the system at an acceptable cost. In this paper, a novel hierarchical decentralized framework for frequency based load control is proposed. The framework involves two decision layers. The top decision layer determines the optimal droop gain required from the aggregated load response on each bus using a robust decentralized control approach. The second layer consists of a large number of devices, which switch probabilistically during contingencies so that the aggregated power change matches the desired droop amount according to the updated gains. The proposed framework is based on the classical nonlinear multi-machine power system model, and can deal with timevarying system operating conditions while respecting the physical constraints of individual devices. Realistic simulation results based on a 68-bus system are provided to demonstrate the effectiveness of the proposed strategy.

Moya, Christian; Zhang, Wei; Lian, Jianming; Kalsi, Karanjit

2014-06-02T23:59:59.000Z

328

SECULAR ORBITAL DYNAMICS OF HIERARCHICAL TWO-PLANET SYSTEMS  

SciTech Connect (OSTI)

The discovery of multi-planet extrasolar systems has kindled interest in using their orbital evolution as a probe of planet formation. Accurate descriptions of planetary orbits identify systems that could hide additional planets or be in a special dynamical state, and inform targeted follow-up observations. We combine published radial velocity data with Markov Chain Monte Carlo analyses in order to obtain an ensemble of masses, semimajor axes, eccentricities, and orbital angles for each of the five dynamically active multi-planet systems: HD 11964, HD 38529, HD 108874, HD 168443, and HD 190360. We dynamically evolve these systems using 52,000 long-term N-body integrations that sample the full range of possible line-of-sight and relative inclinations, and we report on the system stability, secular evolution, and the extent of the resonant interactions. We find that planetary orbits in hierarchical systems exhibit complex dynamics and can become highly eccentric and maybe significantly inclined. Additionally, we incorporate the effects of general relativity in the long-term simulations and demonstrate that it can qualitatively affect the dynamics of some systems with high relative inclinations. The simulations quantify the likelihood of different dynamical regimes for each system and highlight the dangers of restricting simulation phase space to a single set of initial conditions or coplanar orbits.

Veras, Dimitri; Ford, Eric B., E-mail: veras@astro.ufl.ed [Astronomy Department, University of Florida, 211 Bryant Space Sciences Center, Gainesville, FL 32111 (United States)

2010-06-01T23:59:59.000Z

329

On the Fractal Structure of the Universe  

E-Print Network [OSTI]

Despite the observational evidence that the Universe appears hierarchically structured up to a distance of at least 30 Mpc/h (and possibly up to 100 Mpc/h), the fractal paradigm has not yet been recognized by the majority of cosmologists today. In this work we provide a brief overview of the recent observational and theoretical advances relevant to the question of the global cosmic structure and present some simple calculations which indicate how the hierarchical structure may pass over to the homogeneous Universe at very large scale. We show that the fractal structure may be derived from the moderately nonuniform matter distribution. We address a number of epistemological questions relevant to a general outlook of the Cosmos at large too.

P V Grujic; V D Pankovic

2009-07-13T23:59:59.000Z

330

Structuring beyond architecture  

E-Print Network [OSTI]

This thesis explores the layering and negotiation of structural devices in urban settings. Its point of departure is a series of patterns of how structural design and urban design interact and overlap, from which are ...

Foxe, David M

2006-01-01T23:59:59.000Z

331

Lightweight structures in urban design  

E-Print Network [OSTI]

Lightweight architecture questions how we architects think about the environment. It has qualities which complement "mainstream" buildings. This thesis will explore these qualities and will propose that this architecture ...

Bonnemaison, Sarah

1985-01-01T23:59:59.000Z

332

Advanced Neutron Source reactor control and plant protection systems design  

SciTech Connect (OSTI)

This paper describes the reactor control and plant protection systems' conceptual design of the Advanced Neutron Source (ANS). The Plant Instrumentation, Control, and Data Systems and the Reactor Instrumentation and Control System of the ANS are planned as an integrated digital system with a hierarchical, distributed control structure of qualified redundant subsystems and a hybrid digital/analog protection system to achieve the necessary fast response for critical parameters. Data networks transfer information between systems for control, display, and recording. Protection is accomplished by the rapid insertion of negative reactivity with control rods or other reactivity mechanisms to shut down the fission process and reduce heat generation in the fuel. The shutdown system is designed for high functional reliability by use of conservative design features and a high degree of redundance and independence to guard against single failures. Two independent reactivity control systems of different design principles are provided, and each system has multiple independent rods or subsystems to provide appropriate margin for malfunctions such as stuck rods or other single failures. Each system is capable of maintaining the reactor in a cold shutdown condition independently of the functioning of the other system. A highly reliable, redundant channel control system is used not only to achieve high availability of the reactor, but also to reduce challenges to the protection system by maintaining important plant parameters within appropriate limits. The control system has a number of contingency features to maintain acceptable, off-normal conditions in spite of limited control or plant component failures thereby further reducing protection system challenges.

Anderson, J.L.; Battle, R.E.; March-Leuba, J. (Oak Ridge National Lab., TN (United States)); Khayat, M.I. (Tennessee Univ., Knoxville, TN (United States))

1992-01-01T23:59:59.000Z

333

System Design Stage  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This chapter addresses translating the user-oriented functional design specifications into a set of technical, computer-oriented system design specifications; and designing the data structure and processes to the level of detail necessary to plan and execute the Programming and Installation Stages.

1997-05-21T23:59:59.000Z

334

NOTFORDISTRIBUTIONJSTAT_013P_0212v4 The calculation of multi-fractal properties of directed random walks on hierarchic  

E-Print Network [OSTI]

the hierarchic tree Random Energy Model with continuous branching and calculate the moments of the corresponding. INTRODUCTION Random energy models on hierarchic trees are rather well-known and much investigated objects energy variables to every branch of the tree, and further attributes the random energy to every node

335

A Bottom-Up Approach to Verification of Hybrid Model-Based Hierarchical Controllers with application to Underwater Vehicles  

E-Print Network [OSTI]

A Bottom-Up Approach to Verification of Hybrid Model-Based Hierarchical Controllers with application to Underwater Vehicles M. O'Connor, S. Tangirala, R. Kumar, S. Bhattacharyya, M. Sznaier and L.E. Holloway Abstract -- We present a systematic method of verification for a hierarchical hybrid system

Kumar, Ratnesh

336

Equation-based hierarchical optimization of a pipeline ADC  

E-Print Network [OSTI]

In system design, allocation of circuit resources like power and noise budget is a difficult problem. It is difficult to know the optimal distribution of resources because the performance space of each component is not ...

Khanna, Tania

2008-01-01T23:59:59.000Z

337

DOI: 10.1002/adfm.200600390 Hierarchical Shelled ZnO Structures Made of Bunched Nanowire  

E-Print Network [OSTI]

, the National Natural Science Foundation of China (NSFC90406024), "863" and "973" National Key Basic Research importance for the devel- opment of advanced catalysts and gas sensors.[1] Materials with a large surface-Guan-Cun, Hai-Dian District Beijing 100080 (P.R. China) E-mail: pjiang_hlx@yahoo.com; zhong

Wang, Zhong L.

338

Hierarchical Modelling of Automotive Sensor Front-Ends For Structural Diagnosis of Aging Faults  

E-Print Network [OSTI]

functions previously handled purely mechanical. In addition hybrid and pure electrical cars are emerging are hybrid and electrical cars. The automotive semiconductor elec- tronics market amounted to 19.5 billion for the development of dependable analogue/mixed-signal car front-ends, by interfacing aging models between different

Wieringa, Roel

339

A Hierarchical Flight Planner for Sensor-Driven UAV Missions Spencer Clark and Michael A. Goodrich  

E-Print Network [OSTI]

A Hierarchical Flight Planner for Sensor-Driven UAV Missions Spencer Clark and Michael A. Goodrich Abstract-- Unmanned Aerial Vehicles (UAVs) are increas- ingly becoming economical platforms for carrying wilderness search and rescue scenarios. I. INTRODUCTION Unmanned aerial vehicles (UAVs) are frequently used

Goodrich, Michael A.

340

Green's Function for a Hierarchical Self-Avoiding Walk in Four Dimensions  

E-Print Network [OSTI]

Green's Function for a Hierarchical Self-Avoiding Walk in Four Dimensions David C. Brydges #3 . Apart from completing the program in the #12;rst paper, the main result is that the Green's function is almost equal to the Green's function for the Markov process with no self-repulsion, but at a di#11;erent

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


341

Construction of an Informative Hierarchical Prior Distribution: Application to Electricity Load  

E-Print Network [OSTI]

on the wavelet transform to forecast the load curve seen as a functional-valued autoregressive Hilbertian processConstruction of an Informative Hierarchical Prior Distribution: Application to Electricity Load the methodology to a working model for the electricity load forecasting on both simulated and real datasets, where

Paris-Sud XI, Université de

342

Abstract This paper proposes Hierarchical Mobile Router Advertisement (HMRA) that manages hierarchy of  

E-Print Network [OSTI]

of the Ministry of Science and Technology, 2003, Korea. more mobile routers (MRs) that connect it to the globalAbstract ­ This paper proposes Hierarchical Mobile Router Advertisement (HMRA) that manages hierarchy of the mobile routers in nested mobile networks. Nested mobile network contains mobile networks

343

Hierarchical multi-view representation of spatial data; application to the analysis of Corsican Neolithic tombs.  

E-Print Network [OSTI]

Hierarchical multi-view representation of spatial data; application to the analysis of Corsican and views of spatial data for analyzing archeological data. This interdisciplinary project begins in the Corsica Island. · GIS representation of the previous data through spatial entities · Analysis

Paris-Sud XI, Université de

344

Hierarchical models facilitate spatial analysis of large data sets: a case study on invasive plant species  

E-Print Network [OSTI]

LETTER Hierarchical models facilitate spatial analysis of large data sets: a case study on invasive issues require the analysis of large spatial point data sets ­ for example, modelling species distributions, abundance and spread from survey data. But modelling spatial relationships, especially in large

Silander Jr., John A.

345

BUILDING BLOCKS FOR HIERARCHICAL LATENT VARIABLE MODELS Harri Valpola, Tapani Raiko and Juha Karhunen  

E-Print Network [OSTI]

BUILDING BLOCKS FOR HIERARCHICAL LATENT VARIABLE MODELS Harri Valpola, Tapani Raiko and Juha, Espoo, Finland E­mail: {Harri.Valpola, Tapani.Raiko, Juha.Karhunen}@hut.fi URL: http; and the approximation of the true posterior p(#18; j X) by q(#18;). The cost function C used in ensemble learning is C

Karhunen, Juha

346

Journal of Intelligent & Fuzzy Systems 18 (2007) 157169 157 Hierarchical fuzzy filter method for  

E-Print Network [OSTI]

statistics and pattern recognition. So far, most methods of feature selection focus on supervised data where One of the key problems that arise in a great va- riety of fields, including pattern recognitionJournal of Intelligent & Fuzzy Systems 18 (2007) 157­169 157 IOS Press Hierarchical fuzzy filter

Lu, Bao-Liang

347

Large-scale hierarchical optimization for online advertising and wind farm planning  

E-Print Network [OSTI]

Large-scale hierarchical optimization for online advertising and wind farm planning Konstantin Konstantin Salomatin #12;Keywords: online advertising, sponsored search, wind energy, layout optimization (particularly, spon- sored search) and wind farm turbine-layout planning. Whereas very different in specifics

Eskenazi, Maxine

348

Safari: A Self-Organizing, Hierarchical Architecture for Scalable Ad Hoc Networking  

E-Print Network [OSTI]

1 Safari: A Self-Organizing, Hierarchical Architecture for Scalable Ad Hoc Networking Shu Du Ahamed Rice University Abstract As wireless devices become more pervasive, mobile ad hoc networks are gaining importance, motivating the development of highly scalable ad hoc networking techniques. In this paper, we

Druschel, Peter

349

DOI: 10.1002/adem.201400414 Self-Assembled Recyclable Hierarchical Bucky Aerogels**  

E-Print Network [OSTI]

DOI: 10.1002/adem.201400414 Self-Assembled Recyclable Hierarchical Bucky Aerogels** By Mehmet, and recyclable multi-wall carbon nanotube (MWCNT) based light weight (density aerogels (BAGs than the energy dissipated by commercial foams with similar densities. 1. Introduction Aerogels

Daraio, Chiara

350

Hierarchical Nanoparticle Ensembles Synthesized by Liquid Phase Directed Self-Assembly  

E-Print Network [OSTI]

Hierarchical Nanoparticle Ensembles Synthesized by Liquid Phase Directed Self-Assembly J. D, nanoparticle radius control is demonstrated using a micrometer scale switch. KEYWORDS: Self-assembly, directed especially useful for triggering the self and directed assembly18 of patterned nanostructures.19 Presented

Kondic, Lou

351

A smart multi-hop hierarchical routing protocol for efficient video communication over wireless  

E-Print Network [OSTI]

in environmental monitoring, smart parking, traffic control, smart city and others [2]. In this context, smartA smart multi-hop hierarchical routing protocol for efficient video communication over wireless.costa@itec.ufpa.br, {helderp, kassiolsm, cerqueira}@ufpa.br and braun@iam.unibe.ch Abstract--For smart applications, nodes

Braun, Torsten

352

A Mobility and Energy-aware Hierarchical Intrusion Detection System for Mobile ad hoc Networks  

E-Print Network [OSTI]

A Mobility and Energy-aware Hierarchical Intrusion Detection System for Mobile ad hoc Networks consumption. The proposed architecture adopts and enhances the Mobility and Energy Aware Clustering Algorithm and energy of nodes in the cluster formation in order to improve detection accuracy and re- duce energy

Stavrakakis, Ioannis

353

A Hierarchical Bayesian Model for Improving Short-Term Forecasting of Hospital Demand by Including Meteorological  

E-Print Network [OSTI]

A Hierarchical Bayesian Model for Improving Short-Term Forecasting of Hospital Demand by Including Sarran4 Abstract The effect of weather on health has been widely researched, and the ability to forecast, better predictions of hospital demand that are more sensitive to fluctuations in weather can allow

Sahu, Sujit K

354

A Hierarchical Task Model for Dispatching in Computer-Assisted Demand-Responsive Paratransit Operation  

E-Print Network [OSTI]

A Hierarchical Task Model for Dispatching in Computer- Assisted Demand-Responsive Paratransit Model for Dispatching in Computer-Assisted Demand-Responsive Paratransit Operation ABSTRACT, Dispatch Training #12;1 INTRODUCTION Demand-responsive paratransit service is on the rise. For example

Dessouky, Maged

355

Hierarchical Control Strategy for a Hybrid Hydro-mechanical Transmission (HMT) Power-Train  

E-Print Network [OSTI]

Hierarchical Control Strategy for a Hybrid Hydro-mechanical Transmission (HMT) Power-Train Kai Loon a Hydro-mechanical Transmission (HMT) or power-split archi- tecture is being developed as a testbed within hybrid powertrain has a hydro- mechanical transmission (HMT) or power-split architecture. This combines

Li, Perry Y.

356

Learning 3D Object Templates by Hierarchical Quantization of Geometry and Appearance Spaces  

E-Print Network [OSTI]

Learning 3D Object Templates by Hierarchical Quantization of Geometry and Appearance Spaces Wenze for learning 3D object tem- plates from view labeled object images. The 3D template is defined in a joint-sampled discrete space. Using information gain as a criterion, the best 3D template can be searched through the AND

Zhu, Song Chun

357

Representing hierarchical POMDPs as DBNs, with applications to mobile robot navigation  

E-Print Network [OSTI]

Representing hierarchical POMDPs as DBNs, with applications to mobile robot navigation Kevin P and learning is faster than in SCFGs. In particular, inference in an HHMM can be done in O(T) time [MP01) takes O(T 3 ) time [JM00]. This also means learning, which uses inference as a subroutine, is faster. Y

Murphy, Kevin Patrick

358

IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL 2,NO. 3, JULY 1993 Hierarchical Reconstruction Using Geometry  

E-Print Network [OSTI]

Abstract-We describe and demonstrate a hierarchical recon- struction algorithm for use in noisy and limited-angle or sparse- angle tomography. The algorithm estimates an object's mass, center of mass, and convex hull from the available projections, and uses this information, along with fundamental mathematical constraints

Willsky, Alan S.

359

Supplement to Nested Dictionary Learning for Hierarchical Organization of Imagery and  

E-Print Network [OSTI]

1 Supplement to Nested Dictionary Learning for Hierarchical Organization of Imagery and Text I. NESTED K-MEANS The nested K-means is only taken as the initialization step, as a convenient a simple way we call nested K-means. Since this nested K-means algorithm is only taken for initialization, we set

Carin, Lawrence

360

Hierarchical Representation of Videos with Spatio-Temporal Fibers Ratnesh Kumar Guillaume Charpiat Monique Thonnat  

E-Print Network [OSTI]

Hierarchical Representation of Videos with Spatio-Temporal Fibers Ratnesh Kumar Guillaume Charpiat representation of videos, as spatio- temporal fibers. These fibers are clusters of trajectories that are meshed spatially in the image domain. They form a hier- archical partition of the video into regions

Paris-Sud XI, Université de

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


361

Distributed Smart-home Decision-making in a Hierarchical Interactive Smart Grid  

E-Print Network [OSTI]

1 Distributed Smart-home Decision-making in a Hierarchical Interactive Smart Grid Architecture Ding develop a comprehensive real-time interactive framework for the Utility and customers in a smart grid complicated smart grid architectures beyond the assumed abstract model. Index Terms--Bayesian Nash equilibria

Jayaweera, Sudharman K.

362

Dynamical robustness of biological networks with hierarchical distribution of time scales  

E-Print Network [OSTI]

]. Networks of regulating micro-RNA could be key players in canalising genetic developmental programmes [15Dynamical robustness of biological networks with hierarchical distribution of time scales A, the robustness of the relax- ation time using a chemical reaction description of genetic and signalling networks

Radulescu, Ovidiu

363

Multiple-objective Scheduling for the Hierarchical Control of Flexible Manufacturing Cells  

E-Print Network [OSTI]

Multiple-objective Scheduling for the Hierarchical Control of Flexible Manufacturing Cells (Revised level controller employs a combined priority rule to rank shop orders considering multiple scheduling the detailed schedule with projected order completion times back to the shop controller. Upon receiving

Nagi, Rakesh

364

2138 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 17, NO. 11, NOVEMBER 2008 Hierarchical Color Correction for  

E-Print Network [OSTI]

training procedure using the well-known expectation max- imization (EM) algorithm. This hierarchical. Cur- rent version published October 10, 2008. This work was supported by Hewlett-Packard, Inc Lafayette, IN 47907 USA (e-mail: hsiddiqu@purdue. edu; bouman@ecn.purdue.edu). Color versions of one or more

365

Transfer Learning of Hierarchical Task-Network Planning Methods in a Real-Time Strategy Game  

E-Print Network [OSTI]

simulations. Using simulations during the planning and learning process enables the system to get information, and simulation in a real-time strategy game engine. Introduction Learning in the context of automated planningTransfer Learning of Hierarchical Task-Network Planning Methods in a Real-Time Strategy Game

Muñoz-Avila, Héctor

366

Biomimetic synthesis of hierarchical crystalline hydroxyapatite fibers in large-scale  

SciTech Connect (OSTI)

Highlights: ? Crystalline hierarchical hydroxyapatite (HAp) fibers are synthesized. ? We employ a biomimetic route by using cotton cloth as a natural bio-template. ? We study the effects of pH, ultrasonic cleaning time, and calcination temperature. ? We obtain an optimized reaction condition. ? This is a low cost method for production of hierarchical HAp fibers. -- Abstract: Crystalline hierarchical hydroxyapatite [Ca{sub 10}(PO{sub 4}){sub 6}(OH){sub 2}, HAp)] fibers were successfully synthesized via a biomimetic route by using cotton cloth as a natural bio-template. The effects of pH value, aging time, ultrasonic cleaning time, and calcination temperature on the purity and morphology of the resulting hydroxyapatite (HAp) were monitored by scanning election microscope (SEM), X-ray diffraction (XRD), and infrared spectrophotometer (IR) to obtain an optimized reaction condition, namely, pH 9, ultrasonic cleaning for 1 min, aging for 24 h, and calcination at 600 °C for 4 h. We found that the natural cellulose could not only control the morphology of HAp but also lower its phase transformation temperature. The impact of this method lies in its low cost and successful production of large-scale patterning of three-dimensional hierarchical HAp fibers.

Xing, Chaogang; Ge, Suxiang; Huang, Baojun; Bo, Yingying [Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan Province 461000 (China)] [Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan Province 461000 (China); Zhang, Di [State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030 (China)] [State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030 (China); Zheng, Zhi, E-mail: zhengzhi9999@yahoo.com.cn [Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan Province 461000 (China)] [Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan Province 461000 (China)

2012-06-15T23:59:59.000Z

367

Infinite Hidden Markov Models via the Hierarchical Dirichlet Process Matthew J. Beal  

E-Print Network [OSTI]

Infinite Hidden Markov Models via the Hierarchical Dirichlet Process Matthew J. Beal (presenting author) beal@cs.toronto.edu Yee Whye Teh ywteh@eecs.berkeley.edu Michael I. Jordan jordan model (iHMM) of Beal et al. [2]. The iHMM is a hidden Markov model (HMM) in which the number of hidden

Beal, Matt J.

368

Adding Nesting Structure to Words Rajeev Alur1  

E-Print Network [OSTI]

Adding Nesting Structure to Words Rajeev Alur1 and P. Madhusudan2 1 University of Pennsylvania, USA 2 University of Illinois at Urbana-Champaign, USA 1 Introduction We propose nested words to capture models where there is both a natural linear sequencing of positions and a hierarchically nested matching

Parthasarathy, Madhusudan

369

Hierarchical Coordinated Freeway On-Ramp Metering Using Switching  

E-Print Network [OSTI]

and propagate shock waves. The Cell Transmission model (CTM) developed in (Daganzo [1994]),(C. F. Daganzo [1995]) is taken in this work since linear control tools can be used for analysis and control design. This model and Lomax [2007]), the cost of traffic jam has increased 5% during the last three years and has reached more

Boyer, Edmond

370

Exactly solving a Two-level Hierarchical Location Problem with ...  

E-Print Network [OSTI]

of a feasible dual solution and a super-optimal one, it improves the best .... range of features but no particular structure, as typically happens in practice. It ..... Management Science, 50(6):749:760, 2004. ... [7] ILOG CPLEX 11.0 Users Manual.

2009-07-31T23:59:59.000Z

371

Probing the black box : experiments in design and design education  

E-Print Network [OSTI]

Conventional analysis and design methods based on preexisting methods and assumptions preconditions and limits the designer's level of engagement with the specific context that is under investigation. A structural analysis ...

Mulvey, Christopher P. (Christopher Paul), 1975-

2000-01-01T23:59:59.000Z

372

Design and Evaluation of High Capacity Cathodes  

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

to prepare advanced electrodes and surfaces with stable architectural designs Use atomic-scale modeling as a guide to identify, design and understand the structural...

373

Alternative energy design toolkit  

E-Print Network [OSTI]

This thesis concerns the concepts, structure, and applications of the Alternative Energy Design Toolkit. The toolkit is aimed to provide a widely accessible, easy to use, flexible, yet powerful modeling environment for ...

Sukkasi, Sittha

2004-01-01T23:59:59.000Z

374

DESIGN OF THE SNS CAVITY SUPPORT STRUCTURE* , G. Ciovati, D. Machie, J. Pitts, J. Preble, W. J. Schneider, K. Smith, L. Turlington  

E-Print Network [OSTI]

is based on the SACLAY/DESY design for the TESLA cavities (Figure 2). The design was modified uses a DC stepper motor, with 1.8 degree per step, run through a harmonic drive for reduction of 100 2: SNS Tuner Requirements #12;Figure 2. TESLA Tuner The location and orientation of the power

375

Design guidance for play spaces  

E-Print Network [OSTI]

Design guidance for play spaces March 2006 Lindsey Houston, Roger Worthington, Paddy Harrop #12 Design Process 3 Play Spaces 4 Design Principles 6 Elements of Play 6 Existing Play Structures 8 Contacts, Jason Maclean, Andrew Norris, Bridgette Hall and Tania Crocket in #12;Design guidance for play spaces. 3

376

Foundation Design Handbook  

SciTech Connect (OSTI)

The purpose of this handbook is to provide information that will enable designers, builders, and homeowners to understand foundation design problems and solutions. The foundation of a house is a somewhat invisible and sometimes ignored component of the building. It is increasingly evident, however, that attention to good foundation design and construction has significant benefits to the homeowner and the builder, and can avoid some serious future problems. Good foundation design and construction practice means not only insulating to save energy, but also providing effective structural design as well as moisture, termite, and radon control techniques where appropriate.

Carmody, John [Center for Sustainable Building Research, University of Minnesota; Mosiman, Garrett [Center for Sustainable Building Research, University of Minnesota; Handeen, Daniel [Center for Sustainable Building Research, University of Minnesota; Huelman, Patrick [Cold Climate Housing Program, University of Minnesota; Christian, Jeffery [Oak Ridge National Laboratory

2013-10-01T23:59:59.000Z

377

Design for manufacturability Design verification  

E-Print Network [OSTI]

ITRS Design #12;Design · Design for manufacturability · Design verification #12;Design for Manufacturability · Architecture challenges · Logic and circuit challenges · Layout and physical design challenges · Expected to be the source of multiple DFM challenges · Invest in variability reduction or design

Patel, Chintan

378

IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, VOL. 17, NO. 1, JANUARY 2009 103 Hierarchical Segmentation for Hardware  

E-Print Network [OSTI]

) with a hierarchical segmentation scheme targeting hardware implementation. The methodology provides significant-mail: dongu@mojix.com). R. C. C. Cheung is with Solomon Systech Limited, Hong Kong (e-mail: cc- cheung

Luk, Wayne

379

A Mirror Neuron Inspired Hierarchical Network for Action Selection Mark Elshaw, Cornelius Weber, Alex Zochios, Stefan Wermter  

E-Print Network [OSTI]

A Mirror Neuron Inspired Hierarchical Network for Action Selection Mark Elshaw, Cornelius Weber of Sunderland, UK [Mark.Elshaw,Cornelius.Weber,Stefan.Wermter]@sunderland.ac.uk Abstract In this paper we

Weber, Cornelius

380

A Hierarchical Demand Response Framework for Data Center Power Cost Optimization Under Real-World Electricity Pricing  

E-Print Network [OSTI]

1 A Hierarchical Demand Response Framework for Data Center Power Cost Optimization Under Real bills. Our focus is on a subset of this work that carries out demand response (DR) by modulating

Urgaonkar, Bhuvan

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


381

A Hierarchical Demand Response Framework for Data Center Power Cost Optimization Under Real-World Electricity Pricing  

E-Print Network [OSTI]

1 A Hierarchical Demand Response Framework for Data Center Power Cost Optimization Under Real for optimizing their utility bills. Our focus is on a subset of this work that carries out demand response (DR

Urgaonkar, Bhuvan

382

Comment on "Spin-glass attractor on tridimensional hierarchical lattices in the presence of an external magnetic field"  

E-Print Network [OSTI]

The effect of random or uniform magnetic fields on spin glasses on some d=3 hierarchical lattices has been studied, using renormalization-group theory, by Salmon and Nobre. In this work, the recursion relation for the ...

Berker, A. Nihat

383

The Co-Design of Scenarios for a Didactic-based E-learning System viewed as an Adaptive Virtual Document  

E-Print Network [OSTI]

The Co-Design of Scenarios for a Didactic-based E-learning System viewed as an Adaptive Virtual of the theory in didactic anthropology of knowledge and to show why we can formalize them in a hierarchical task scientific approaches ­ from computer science, didactic, cognitive psychology, education, etc. The design

Paris-Sud XI, Université de

384

Material-based design computation  

E-Print Network [OSTI]

The institutionalized separation between form, structure and material, deeply embedded in modernist design theory, paralleled by a methodological partitioning between modeling, analysis and fabrication, resulted in ...

Oxman, Neri

2010-01-01T23:59:59.000Z

385

The North American Carbon Program Multi-scale synthesis and Terrestrial Model Intercomparison Project Part 1: Overview and experimental design  

SciTech Connect (OSTI)

Terrestrial biosphere models (TBMs) have become an integral tool for extrapolating local observations and understanding of land-atmosphere carbon exchange to larger regions. The North American Carbon Program (NACP) Multi-scale synthesis and Terrestrial Model Intercomparison Project (MsTMIP) is a formal model intercomparison and evaluation effort focused on improving the diagnosis and attribution of carbon exchange at regional and global scales. MsTMIP builds upon current and past synthesis activities, and has a unique framework designed to isolate, interpret, and inform understanding of how model structural differences impact estimates of carbon uptake and release. Here we provide an overview of the MsTMIP effort and describe how the MsTMIP experimental design enables the assessment and quantification of TBM structural uncertainty. Model structure refers to the types of processes considered (e.g. nutrient cycling, disturbance, lateral transport of carbon), and how these processes are represented (e.g. photosynthetic formulation, temperature sensitivity, respiration) in the models. By prescribing a common experimental protocol with standard spin-up procedures and driver data sets, we isolate any biases and variability in TBM estimates of regional and global carbon budgets resulting from differences in the models themselves (i.e. model structure) and model-specific parameter values. An initial intercomparison of model structural differences is represented using hierarchical cluster diagrams (a.k.a. dendrograms), which highlight similarities and differences in how models account for carbon cycle, vegetation, energy, and nitrogen cycle dynamics. We show that, despite the standardized protocol used to derive initial conditions, models show a high degree of variation for GPP, total living biomass, and total soil carbon, underscoring the influence of differences in model structure and parameterization on model estimates.

Huntzinger, D.N. [Northern Arizona University] [Northern Arizona University; Schwalm, C. [Northern Arizona University] [Northern Arizona University; Michalak, A.M [Carnegie Institution for Science, Stanford] [Carnegie Institution for Science, Stanford; Schaefer, K. [National Snow and Ice Data Center] [National Snow and Ice Data Center; King, A.W. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Wei, Y. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Jacobson, A. [National Snow and Ice Data Center] [National Snow and Ice Data Center; Liu, S. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Cook, R. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Post, W.M. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Berthier, G. [Laboratoire des Sciences du Climat et de l'Environnement (LSCE)] [Laboratoire des Sciences du Climat et de l'Environnement (LSCE); Hayes, D. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Huang, M. [Pacific Northwest National Laboratory (PNNL)] [Pacific Northwest National Laboratory (PNNL); Ito, A. [National Institute for Environmental Studies, Tsukuba, Japan] [National Institute for Environmental Studies, Tsukuba, Japan; Lei, H. [Pacific Northwest National Laboratory (PNNL)] [Pacific Northwest National Laboratory (PNNL); Lu, C. [International Center for Climate and Global Change Research and School of Forestry and Wildlife Sci.] [International Center for Climate and Global Change Research and School of Forestry and Wildlife Sci.; Mao, J. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Peng, C.H. [University of Quebec at Montreal, Institute of Environment Sciences] [University of Quebec at Montreal, Institute of Environment Sciences; Peng, S. [Laboratoire des Sciences du Climat et de l'Environnement (LSCE)] [Laboratoire des Sciences du Climat et de l'Environnement (LSCE); Poulter, B. [Laboratoire des Sciences du Climat et de l'Environnement (LSCE)] [Laboratoire des Sciences du Climat et de l'Environnement (LSCE); Riccuito, D. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Shi, X. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Tian, H. [International Center for Climate and Global Change Research and School of Forestry and Wildlife Sci.] [International Center for Climate and Global Change Research and School of Forestry and Wildlife Sci.; Wang, W. [National Aeronautics and Space Administration (NASA), Ames Research Center, Moffett Field] [National Aeronautics and Space Administration (NASA), Ames Research Center, Moffett Field; Zeng, N. [University of Maryland] [University of Maryland; Zhao, F. [University of Maryland] [University of Maryland; Zhu, Q. [Laboratory for Ecological Forecasting and Northwest Agriculture and Forestry University] [Laboratory for Ecological Forecasting and Northwest Agriculture and Forestry University

2013-01-01T23:59:59.000Z

386

The Case for A Hierarchal System Model for Linux Clusters  

SciTech Connect (OSTI)

The computer industry today is no longer driven, as it was in the 40s, 50s and 60s, by High-performance computing requirements. Rather, HPC systems, especially Leadership class systems, sit on top of a pyramid investment mode. Figure 1 shows a representative pyramid investment model for systems hardware. At the base of the pyramid is the huge investment (order 10s of Billions of US Dollars per year) in semiconductor fabrication and process technologies. These costs, which are approximately doubling with every generation, are funded from investments multiple markets: enterprise, desktops, games, embedded and specialized devices. Over and above these base technology investments are investments for critical technology elements such as microprocessor, chipsets and memory ASIC components. Investments for these components are spread across the same markets as the base semiconductor processes investments. These second tier investments are approximately half the size of the lower level of the pyramid. The next technology investment layer up, tier 3, is more focused on scalable computing systems such as those needed for HPC and other markets. These tier 3 technology elements include networking (SAN, WAN and LAN), interconnects and large scalable SMP designs. Above these is tier 4 are relatively small investments necessary to build very large, scalable systems high-end or Leadership class systems. Primary among these are the specialized network designs of vertically integrated systems, etc.

Seager, M; Gorda, B

2009-06-05T23:59:59.000Z

387

A hierarchical perspective on the ecology of biological invasions:: impact of red imported fire ants on grassland ecosystems  

E-Print Network [OSTI]

of the requirements for the degree of MASTER OF SCIENCE December 1992 Major Subject: Wildlife and Fisheries Sciences A HIERARCHICAL PERSPECTIVE ON THE ECOLOGY OF BIOLOGICAL INVASIONS: IMPACT OF RED IMPORTED FIRE ANTS ON GRASSLAND ECOSYSTEMS A Thesis Revin Lee...A HIERARCHICAL PERSPECTIVE ON THE ECOLOGY OF BIOLOGICAL INVASIONS: IMPACT OF RED IMPORTED FIRE ANTS ON GRASSLAND ECOSYSTEMS A Thesis REVIN LEE STOKER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

Stoker, Revin Lee

1992-01-01T23:59:59.000Z

388

Hierarchical mesoporous/microporous carbon with graphitized frameworks for high-performance lithium-ion batteries  

SciTech Connect (OSTI)

A hierarchical meso-/micro-porous graphitized carbon with uniform mesopores and ordered micropores, graphitized frameworks, and extra-high surface area of ?2200 m{sup 2}/g, was successfully synthesized through a simple one-step chemical vapor deposition process. The commercial mesoporous zeolite Y was utilized as a meso-/ micro-porous template, and the small-molecule methane was employed as a carbon precursor. The as-prepared hierarchical meso-/micro-porous carbons have homogeneously distributed mesopores as a host for electrolyte, which facilitate Li{sup +} ions transport to the large-area micropores, resulting a high reversible lithium ion storage of 1000 mA h/g and a high columbic efficiency of 65% at the first cycle.

Lv, Yingying; Fang, Yin; Qian, Xufang; Tu, Bo [Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Laboratory of Advanced Materials, Fudan University, Shanghai 200433 (China); Wu, Zhangxiong [Department of Chemical Engineering, Monash University, Clayton, VIC 3800 (Australia); Asiri, Abdullah M. [Chemistry Department and The Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589 (Saudi Arabia); Zhao, Dongyuan, E-mail: dyzhao@fudan.edu.cn [Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Laboratory of Advanced Materials, Fudan University, Shanghai 200433 (China); Department of Chemical Engineering, Monash University, Clayton, VIC 3800 (Australia)

2014-11-01T23:59:59.000Z

389

Evaluation of strategies for seismic design  

E-Print Network [OSTI]

Current trends in seismic design require a new approach, oriented in satisfying motion related design requirements and limiting both structural and non-structural damage. Seismic isolation and damping devices are currently ...

Tsertikidou, Despoina

2012-01-01T23:59:59.000Z

390

Mutation of Surface Residues to Promote Crystallization of Activated Factor XI as a Complex with Benzamidine: an Essential Step for the Iterative Structure-Based Design of Factor XI Inhibitors  

SciTech Connect (OSTI)

Activated factor XI (FXIa) is a key enzyme in the amplification phase of the blood-coagulation cascade. Thus, a selective FXIa inhibitor may have lesser bleeding liabilities and provide a safe alternative for antithrombosis therapy to available drugs on the market. In a previous report, the crystal structures of the catalytic domain of FXIa (rhFXI370-607) in complex with various ecotin mutants have been described [Jin et al. (2005), Journal of Biological Chemistry 280, 4704-4712]. However, ecotin forms a matrix-like interaction with rhFXI370-607 and is impossible to displace with small-molecule inhibitors; ecotin crystals are therefore not suitable for iterative structure-based ligand design. In addition, rhFXI370-607 did not crystallize in the presence of small-molecule ligands. In order to obtain the crystal structure of rhFXI370-607 with a weak small-molecule ligand, namely benzamidine, several rounds of surface-residue mutation were implemented to promote crystal formation of rhFXI370-607. A quadruple mutant of rhFXI370-607 (rhFXI370-607-S434A, T475A, C482S, K437A) readily crystallized in the presence of benzamidine. The benzamidine in the preformed crystals was easily exchanged with other FXIa small-molecule inhibitors. These crystals have facilitated the structure-based design of small-molecule FXIa inhibitors.

Jin,L.; Pandey, P.; Babine, R.; Weaver, D.; Abdel-Meguid, S.; Stricker, J.

2005-01-01T23:59:59.000Z

391

Market segmentation of visitors to Fort Wilkins State Park using a hierarchical clustering approach  

E-Print Network [OSTI]

describe natural groupings of people. 16 In short, what direction does literature provide for this re- search project? Initially it was shown that state parks are for people. The objective of the parks is to provide satisfying ex- periences to park...MARKET SEGMENTATION OF VISITORS TO FORT WILKINS STATE PARK USING A HIERARCHICAL CLUSTERING APPROACH A Thesis by THOMAS MARK FISHER Submitted to the Graduate College of Texas AAM University in partial fulfillment of the requirement...

Fisher, Thomas Mark

2012-06-07T23:59:59.000Z

392

Hierarchical Petascale Simulation Framework For Stress Corrosion Cracking  

SciTech Connect (OSTI)

A number of major accomplishments resulted from the project. These include: • Data Structures, Algorithms, and Numerical Methods for Reactive Molecular Dynamics. We have developed a range of novel data structures, algorithms, and solvers (amortized ILU, Spike) for use with ReaxFF and charge equilibration. • Parallel Formulations of ReactiveMD (Purdue ReactiveMolecular Dynamics Package, PuReMD, PuReMD-GPU, and PG-PuReMD) for Messaging, GPU, and GPU Cluster Platforms. We have developed efficient serial, parallel (MPI), GPU (Cuda), and GPU Cluster (MPI/Cuda) implementations. Our implementations have been demonstrated to be significantly better than the state of the art, both in terms of performance and scalability. • Comprehensive Validation in the Context of Diverse Applications. We have demonstrated the use of our software in diverse systems, including silica-water, silicon-germanium nanorods, and as part of other projects, extended it to applications ranging from explosives (RDX) to lipid bilayers (biomembranes under oxidative stress). • Open Source Software Packages for Reactive Molecular Dynamics. All versions of our soft- ware have been released over the public domain. There are over 100 major research groups worldwide using our software. • Implementation into the Department of Energy LAMMPS Software Package. We have also integrated our software into the Department of Energy LAMMPS software package.

Grama, Ananth

2013-12-18T23:59:59.000Z

393

Bio-inspired composites : a de novo approach to the conceptualization, design and synthesis of tough mesoscale structures with simple building blocks  

E-Print Network [OSTI]

Composites play an important role as structural materials in a range of engineering fields due to their potential to combine the best mechanical properties of their constituents. In biology, composites are ubiquitous and ...

Dimas, Leon Sokratis Scheie

2013-01-01T23:59:59.000Z

394

Photovoltaic Cell Structure Basics  

Broader source: Energy.gov [DOE]

The actual structural design of a photovoltaic (PV), or solar cell, depends on the limitations of the material used in the PV cell.

395

Control of entity interactions in a hierarchical variable resolution simulation  

SciTech Connect (OSTI)

There has long been interest in variable resolution modeling to support military analysis for a broad range of interest areas. Despite the ever-present desire for models of greater fidelity at the expense of analysis and computation resources, models of moderate to low fidelity are still required at many levels of decision-making. Problems can arise due to the issue of consistency among the family of models used for analysis. To address this and other problems, models of variable resolution have been suggested. However, such variable resolution architectures inherently carry their own set of issues which must be resolved in order to be useful. First, what are the structural requirements for a variable resolution model; and second, how are interactions between entities governed, especially when the entities have different resolutions? This paper addresses these issues and discusses key mechanisms needed to develop a variable resolution combat simulation that meets several core requirements for such models: seamless aggregation/disaggregation, appropriate interactions between entities of differing resolution, and control of the aggregation/disaggregation process.

Powell, D.R.

1997-08-01T23:59:59.000Z

396

Control of entity interactions in a hierarchical variable resolution simulation  

SciTech Connect (OSTI)

There has long been interest in variable resolution modeling to support military analysis for a broad range of interest areas. Despite the ever-present desire for models of greater fidelity at the expense of analysis and computation resources, models of moderate to low fidelity are still required at many levels of decision-making. Problems can arise due to the issue of consistency among the family of models used for analysis. To address this and other problems, models of variable resolution have been suggested. However, such variable resolution architectures inherently carry their own set of issues which must be resolved in order to be useful. First, what are the structural requirements for a variable resolution model; and second, how are interactions between entities governed, especially when the entities have different resolutions? This paper addresses these issues and discusses key mechanisms needed to develop a variable resolution combat simulation that meets several core requirements for such models: seamless aggregation/disaggregation, appropriate interactions between entities of differing resolution, and control of the aggregation/disaggregation process.

Powell, D.R.

1997-10-01T23:59:59.000Z

397

Determining the Bayesian optimal sampling strategy in a hierarchical system.  

SciTech Connect (OSTI)

Consider a classic hierarchy tree as a basic model of a 'system-of-systems' network, where each node represents a component system (which may itself consist of a set of sub-systems). For this general composite system, we present a technique for computing the optimal testing strategy, which is based on Bayesian decision analysis. In previous work, we developed a Bayesian approach for computing the distribution of the reliability of a system-of-systems structure that uses test data and prior information. This allows for the determination of both an estimate of the reliability and a quantification of confidence in the estimate. Improving the accuracy of the reliability estimate and increasing the corresponding confidence require the collection of additional data. However, testing all possible sub-systems may not be cost-effective, feasible, or even necessary to achieve an improvement in the reliability estimate. To address this sampling issue, we formulate a Bayesian methodology that systematically determines the optimal sampling strategy under specified constraints and costs that will maximally improve the reliability estimate of the composite system, e.g., by reducing the variance of the reliability distribution. This methodology involves calculating the 'Bayes risk of a decision rule' for each available sampling strategy, where risk quantifies the relative effect that each sampling strategy could have on the reliability estimate. A general numerical algorithm is developed and tested using an example multicomponent system. The results show that the procedure scales linearly with the number of components available for testing.

Grace, Matthew D.; Ringland, James T.; Boggs, Paul T.; Pebay, Philippe Pierre

2010-09-01T23:59:59.000Z

398

Preliminary Structural Design Conceptualization for Composite Rotor for Verdant Power Water Current: Cooperative Research and Development Final Report, CRADA Number CRD-08-296  

SciTech Connect (OSTI)

The primary thrust of the CRADA will be to develop a new rotor design that will allow higher current flows (>4m/s), greater swept area (6-11m), and in the process, will maximize performance and energy capture.

Hughes, S.

2011-02-01T23:59:59.000Z

399

for K and using a multistage structure, we can design an MP syn-thesis filter of very high order. Not only lowpass, but also high-  

E-Print Network [OSTI]

. Terndlogico Esq. Garcia Cubas, Celaya, Gto. Mixico) E-mail: Jdiaz@inaoep.mx 2 September 1997 References KALE reduction', IEEE Trans. Signal Processing, 1992, 40, (3), pp. 532- 542 SREERAM,v.,and AGATHOKLIS, P.: `Design of linear-phase IIR filters via impulse response grammians', IEEE Trans. Signal Processing, 1992

Plataniotis, Konstantinos N.

400

Design operators  

E-Print Network [OSTI]

Design operators is a thesis that investigates the nature and characteristics of the design process by examining the interaction of computation with architectural design. The effects of the introduction of these media in ...

Dritsas, Stylianos, 1978-

2004-01-01T23:59:59.000Z

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


401

Hierarchical Models for Batteries: Overview with Some Case Studies  

SciTech Connect (OSTI)

Batteries are complex multiscale systems and a hierarchy of models has been employed to study different aspects of batteries at different resolutions. For the electrochemistry and charge transport, the models span from electric circuits, single-particle, pseudo 2D, detailed 3D, and microstructure resolved at the continuum scales and various techniques such as molecular dynamics and density functional theory to resolve the atomistic structure. Similar analogies exist for the thermal, mechanical, and electrical aspects of the batteries. We have been recently working on the development of a unified formulation for the continuum scales across the electrode-electrolyte-electrode system - using a rigorous volume averaging approach typical of multiphase formulation. This formulation accounts for any spatio-temporal variation of the different properties such as electrode/void volume fractions and anisotropic conductivities. In this talk the following will be presented: The background and the hierarchy of models that need to be integrated into a battery modeling framework to carry out predictive simulations, Our recent work on the unified 3D formulation addressing the missing links in the multiscale description of the batteries, Our work on microstructure resolved simulations for diffusion processes, Upscaling of quantities of interest to construct closures for the 3D continuum description, Sample results for a standard Carbon/Spinel cell will be presented and compared to experimental data, Finally, the infrastructure we are building to bring together components with different physics operating at different resolution will be presented. The presentation will also include details about how this generalized approach can be applied to other electrochemical storage systems such as supercapacitors, Li-Air batteries, and Lithium batteries with 3D architectures.

Pannala, Sreekanth [ORNL; Mukherjee, Partha P [ORNL; Allu, Srikanth [ORNL; Nanda, Jagjit [ORNL; Martha, Surendra K [ORNL; Dudney, Nancy J [ORNL; Turner, John A [ORNL

2012-01-01T23:59:59.000Z

402

Design Aid Tools for User Interface Designers Harald Reiterer  

E-Print Network [OSTI]

guides, design guides), which may be encountered, learned, practised, and extended during ongoing use, structured, and organised ways to integrate the use of guide- lines, standards, and style guides. The volume of standards, style guides, and design guides now available to user interface designers

Reiterer, Harald

403

Design and realization of one-dimensional double hetero-structure photonic crystals for infrared-radar stealth-compatible materials applications  

SciTech Connect (OSTI)

In this paper, a new type one-dimensional (1D) double hetero-structure composite photonic crystal (CPC) for infrared-radar stealth-compatible materials applications was proposed and studied numerically and experimentally. First, based on transfer matrix method of thin-film optical theory, the propagation characteristics of the proposed structure comprising a stack of different alternating micrometer-thick layers of germanium and zinc sulfide were investigated numerically. Calculation results exhibit that this 1D single hetero-structure PC could achieve a flat high reflectivity gradually with increasing the number of the alternating media layers in a single broadband range. Then, based on principles of distributed Bragg reflector micro-cavity, a 1D double hetero-structure CPC comprising four PCs with thickness of 0.797??m, 0.592??m, 1.480??m, and 2.114??m, respectively, was proposed. Calculation results exhibit that this CPC could achieve a high reflectance of greater than 0.99 in the wavelength ranges of 3–5??m and 8–14??m and agreed well with experiment. Further experiments exhibit that the infrared emissivity of the proposed CPC is as low as 0.073 and 0.042 in the wavelength ranges of 3–5??m and 8–12??m, respectively. In addition, the proposed CPC can be used to construct infrared-radar stealth-compatible materials due to its high transmittance in radar wave band.

Wang, Zhixun; Cheng, Yongzhi, E-mail: cyz0715@126.com; Nie, Yan; Wang, Xian; Gong, Rongzhou, E-mail: rzhgong@mail.hust.edu.cn [School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074 (China)

2014-08-07T23:59:59.000Z

404

Maintenance building structural design description: 4 x 350 MW(t) Modular HTGR [High-Temperature Gas-Cooled Reactor] Plant  

SciTech Connect (OSTI)

The Maintenance Building is a grade-founded, two-story, steel-framed structure, located adjacent to the Turbine Building in the Energy Conversion Area. It has a reinforced concrete foundation and slab on grade, and insulated sheet metal exterior walls and roof decking.

NONE

1986-06-01T23:59:59.000Z

405

Investigating the durability of structures  

E-Print Network [OSTI]

The durability of structures is one of primary concerns in the engineering industry. Poor durability in design may result in a structure losing its performance to the extent where structural integrity is no longer satisfied ...

Saba, Dana (Dana Walid)

2013-01-01T23:59:59.000Z

406

Real-Time Combined Heat and Power Operational Strategy Using a Hierarchical Optimization Algorithm  

SciTech Connect (OSTI)

Existing attempts to optimize the operation of Combined Heat and Power (CHP) systems for building applications have two major limitations: the electrical and thermal loads are obtained from historical weather profiles; and the CHP system models ignore transient responses by using constant equipment efficiencies. This paper considers the transient response of a building combined with a hierarchical CHP optimal control algorithm to obtain a real-time integrated system that uses the most recent weather and electric load information. This is accomplished by running concurrent simulations of two transient building models. The first transient building model uses current as well as forecast input information to obtain short term predictions of the thermal and electric building loads. The predictions are then used by an optimization algorithm, i.e., a hierarchical controller, that decides the amount of fuel and of electrical energy to be allocated at the current time step. In a simulation, the actual physical building is not available and, hence, to simulate a real-time environment, a second, building model with similar but not identical input loads are used to represent the actual building. A state-variable feedback loop is completed at the beginning of each time step by copying, i.e., measuring, the state variable from the actual building and restarting the predictive model using these ?measured? values as initial conditions. The simulation environment presented in this paper features nonlinear effects such as the dependence of the heat exchanger effectiveness on their operating conditions. The results indicate that the CHP engine operation dictated by the proposed hierarchical controller with uncertain weather conditions have the potential to yield significant savings when compared to conventional systems using current values of electricity and fuel prices.

Yun, Kyung Tae; Cho, Heejin; Luck, Rogelio; Mago, Pedro J.

2011-06-01T23:59:59.000Z

407

Hierarchically Porous Graphene as a Lithium-Air Battery Electrode. | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun with Bigfront.jpgcommunity200cellHeatExperiment.Theoretical T.Hierarchically

408

Yuening Hu, Jordan Boyd-Graber, Hal Daume III, and Z. Irene Ying. Binary to Bushy: Bayesian Hierarchical Clustering with the Beta Coalescent. Neural Information Processing Systems, 2013.  

E-Print Network [OSTI]

Yuening Hu, Jordan Boyd-Graber, Hal Daume III, and Z. Irene Ying. Binary to Bushy: Bayesian Hierarchical Clustering with the Beta Coalescent. Neural Information Processing Systems, 2013. @inproceedings{Hu:Boyd-Graber:III:Ying and Z. Irene Ying}, Year = {2013}, } 1 #12;Binary to Bushy: Bayesian Hierarchical Clustering

Boyd-Graber, Jordan

409

The 2dF Galaxy Redshift Survey: Hierarchical galaxy clustering  

E-Print Network [OSTI]

We use the two-degree field Galaxy Redshift Survey (2dFGRS) to test the hierarchical scaling hypothesis: namely, that the $p$-point galaxy correlation functions can be written in terms of the two point correlation function or variance. This scaling is expected if an initially Gaussian distribution of density fluctuations evolves under the action of gravitational instability. We measure the volume averaged $p$-point correlation functions using a counts in cells technique applied to a volume limited sample of 44,931 $L_*$ galaxies. We demonstrate that $L_{*}$ galaxies display hierarchical clustering up to order $p=6$ in redshift space. The variance measured for $L_{*}$ galaxies is in excellent agreement with the predictions from a $\\Lambda$-cold dark matter N-body simulation. This applies to all cell radii considered, $0.3<(R/h^{-1}{\\rm Mpc})<30$. However, the higher order correlation functions of $L_*$ galaxies have a significantly smaller amplitude than is predicted for the dark matter for $R<10h^{-1}$Mpc. This disagreement implies that a non-linear bias exists between the dark matter and $L_*$ galaxies on these scales. We also show that the presence of two rare, massive superclusters in the 2dFGRS has an impact on the higher-order clustering moments measured on large scales.

C. M. Baugh; D. J. Croton; E. Gaztanaga; P. Norberg; M. Colless; I. K. Baldry; J. Bland-Hawthorn; T. Bridges; R. Cannon; S. Cole; C. Collins; W. Couch; G. Dalton; R. De Propris; S. P. Driver; G. Efstathiou; R. S. Ellis; C. S. Frenk; K. Glazebrook; C. Jackson; O. Lahav; I. Lewis; S. Lumsden; S. Maddox; D. Madgwick; J. A. Peacock; B. A. Peterson; W. Sutherland; K. Taylor

2004-06-20T23:59:59.000Z

410

Hierarchical Diagnosis  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun with Bigfront.jpgcommunity200cellHeatExperiment.

411

Hierarchical Diagnosis  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun with Bigfront.jpgcommunity200cellHeatExperiment.Theoretical Studies of

412

Application of an automated wireless structural monitoring system for long-span suspension bridges  

SciTech Connect (OSTI)

This paper describes an automated wireless structural monitoring system installed at the New Carquinez Bridge (NCB). The designed system utilizes a dense network of wireless sensors installed in the bridge but remotely controlled by a hierarchically designed cyber-environment. The early efforts have included performance verification of a dense network of wireless sensors installed on the bridge and the establishment of a cellular gateway to the system for remote access from the internet. Acceleration of the main bridge span was the primary focus of the initial field deployment of the wireless monitoring system. An additional focus of the study is on ensuring wireless sensors can survive for long periods without human intervention. Toward this end, the life-expectancy of the wireless sensors has been enhanced by embedding efficient power management schemes in the sensors while integrating solar panels for power harvesting. The dynamic characteristics of the NCB under daily traffic and wind loads were extracted from the vibration response of the bridge deck and towers. These results have been compared to a high-fidelity finite element model of the bridge.

Kurata, M.; Lynch, J. P. [Department of Civil and Environ. Eng., University of Michigan, Ann Arbor, MI 48105 (United States); Linden, G. W. van der [SC Solutions, Sunnyvale, CA 94085 (United States); Hipley, P.; Sheng, L.-H. [California Department of Transportation (Caltrans), Sacramento, CA 95816 (United States)

2011-06-23T23:59:59.000Z

413

Design of a Spacer Grid Using Axiomatic Design  

SciTech Connect (OSTI)

Recently, much attention has been focused on the design of the fuel assemblies in the Pressurized Light Water Reactor (PLWR). The spacer grid is one of the main structural components in a fuel assembly. It supports fuel rods, guides cooling water, and maintains geometry from the external impact loads. In this research, a new shape of the spacer grid is designed by the axiomatic approach. The Independence Axiom is utilized for the design. For the conceptual design, functional requirements (FRs) are defined and corresponding design parameters (DPs) are found to satisfy FRs in sequence. Overall configuration and shapes are determined in this process. Detailed design is carried out based on the result of the axiomatic design. For the detailed design, the system performances are evaluated by using linear and nonlinear finite element analysis. The dimensions are determined by optimization. Some commercial codes are utilized for the analysis and design. (authors)

Song, K.N.; Yoon, K.H. [Korea Atomic Energy Research Institute, 150, Dukjin-Dong, Yusong-Gu, Taejon 305-353 (Korea, Republic of); Kang, B.S.; Park, G.J. [Hanyang University, 249-1, Kyomoon-dong, Kuri-si, Kyounggi-do 471-701 (Korea, Republic of); Choi, S.K. [Korea Rolling Stock Corporation, Kyunggi-Do, 437-040 (Korea, Republic of)

2002-07-01T23:59:59.000Z

414

Conceptual design report: Nuclear materials storage facility renovation. Part 5, Structural/seismic investigation. Section A report, existing conditions calculations/supporting information  

SciTech Connect (OSTI)

The Nuclear Materials Storage Facility (NMSF) at the Los Alamos National Laboratory (LANL) was a Fiscal Year (FY) 1984 line-item project completed in 1987 that has never been operated because of major design and construction deficiencies. This renovation project, which will correct those deficiencies and allow operation of the facility, is proposed as an FY 97 line item. The mission of the project is to provide centralized intermediate and long-term storage of special nuclear materials (SNM) associated with defined LANL programmatic missions and to establish a centralized SNM shipping and receiving location for Technical Area (TA)-55 at LANL. Based on current projections, existing storage space for SNM at other locations at LANL will be loaded to capacity by approximately 2002. This will adversely affect LANUs ability to meet its mission requirements in the future. The affected missions include LANL`s weapons research, development, and testing (WRD&T) program; special materials recovery; stockpile survelliance/evaluation; advanced fuels and heat sources development and production; and safe, secure storage of existing nuclear materials inventories. The problem is further exacerbated by LANL`s inability to ship any materials offsite because of the lack of receiver sites for mate rial and regulatory issues. Correction of the current deficiencies and enhancement of the facility will provide centralized storage close to a nuclear materials processing facility. The project will enable long-term, cost-effective storage in a secure environment with reduced radiation exposure to workers, and eliminate potential exposures to the public. Based upon US Department of Energy (DOE) Albuquerque Operations (DOE/Al) Office and LANL projections, storage space limitations/restrictions will begin to affect LANL`s ability to meet its missions between 1998 and 2002.

NONE

1995-07-14T23:59:59.000Z

415

Design of the FIRE Plasma Facing Presented at the UFA Burning  

E-Print Network [OSTI]

Design #12;Outer Divertor Design Copper-alloy finger plates Stainless Support Structure Press-Fit Pins

416

Integrated design : a generative multi-performative design approach  

E-Print Network [OSTI]

There are building systems, called "modularized", in which the component systems (for structure, lighting, etc) can be analyzed and synthesized independently since their performance and design do not interact or affect one ...

Fasoulaki, Eleftheria

2008-01-01T23:59:59.000Z

417

Oriented Hierarchical Porous TiO2 Nanowires on Ti Substrate: Evolution of Nanostructures for Dye-Sensitized Solar Cells  

E-Print Network [OSTI]

of highly-oriented anatase TiO2 nanocrystals, are adopted as photoelectrodes in dye-sensitized solar cells. [1­4]. In particular, lightweight and flexible dye-sensitized solar cells (DSSCs) have received muchOriented Hierarchical Porous TiO2 Nanowires on Ti Substrate: Evolution of Nanostructures for Dye-Sensitized

Park, Byungwoo

418

Hierarchical object-based classification of ultra-high-resolution digital mapping camera (DMC) imagery for rangeland mapping and assessment  

E-Print Network [OSTI]

and is in the process of changing from film to digital aerial image acquisition. Cur- rently, only broad land useHierarchical object-based classification of ultra-high-resolution digital mapping camera (DMC, MSC3JER, NMSU, Las Cruces, NM 88003-8003, USA Ultra-high-resolution digital aerial imagery has great

419

Networks Spanish project COPABIB Group Murcia Group Polit. Valencia Group La Laguna Computation in heterogeneous-hierarchical  

E-Print Network [OSTI]

Networks Spanish project COPABIB Group Murcia Group Polit. Valencia Group La Laguna Computation in heterogeneous-hierarchical environments Project COPABIB: Univ. Alicante, Castell´on, La Laguna, Murcia COPABIB Group Murcia Group Polit. Valencia Group La Laguna Contents 1 Networks 2 Spanish project COPABIB 3

Giménez, Domingo

420

X-Ray Volume Rendering by Hierarchical Wavelet Splatting Michel A. Westenberg and Jos B.T.M. Roerdink  

E-Print Network [OSTI]

X-Ray Volume Rendering by Hierarchical Wavelet Splatting Michel A. Westenberg and Jos B Groningen, The Netherlands michel@cs.rug.nl, roe@cs.rug.nl Abstract This paper is concerned with X-ray, and is faster by a factor of two to three. 1 Introduction X-ray volume rendering remains an interesting tech

Westenberg, Michel A.

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


421

Infinite Hidden Markov Models via the Hierarchical Dirichlet Process Matthew J. Beal # (presenting author) beal@cs.toronto.edu  

E-Print Network [OSTI]

Infinite Hidden Markov Models via the Hierarchical Dirichlet Process Matthew J. Beal # (presenting author) beal@cs.toronto.edu Yee Whye Teh + ywteh@eecs.berkeley.edu Michael I. Jordan + jordan model (iHMM) of Beal et al. [2]. The iHMM is a hidden Markov model (HMM) in which the number of hidden

Beal, Matt J.

422

Digital Integrated Circuit (IC) Layout andDigital Integrated Circuit (IC) Layout and DesignDesign  

E-Print Network [OSTI]

EE134 1 Digital Integrated Circuit (IC) Layout andDigital Integrated Circuit (IC) Layout and DesignDesign Digital IntegratedDigital Integrated Circuits:Circuits: A Design Perspective,A Design Perspective, 22ndnd ! Interconnect: R, L and C ! Arithmetic building blocks ! Memories and array structures ! Design methods #12;EE

423

Design and Evaluation of Novel High Capacity Cathode Materials...  

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

processing routes to prepare advanced electrodes with new architectural designs Use atomic-scale modeling as a guide to identify, design and understand the structural...

424

An integrated workstation environment for design and evaluation of analog integrated circuits  

E-Print Network [OSTI]

, TABLE OF CONTENTS CHAPTER Page I INTRODUCTION A. B. C. D. E. F. G. H. Design aspects Scope of this thesis Analog design procedures Hierarchical design Behavioral simulation Using mathematical models for simulation Conclusion... Deliverables 1 1 2 3 5 5 8 9 II COMPONENTS OF THE SYSTEM 10 A. B. C. D. E. F. G. H. Introduction Hardware overview The HP 9000/310 workstation The HP 9000/318 workstations Addition of an HP 9000/332 Possible addition of a more powerful...

Soenen, Eric Georges

2012-06-07T23:59:59.000Z

425

A second gradient theoretical framework for hierarchical multiscale modeling of materials  

SciTech Connect (OSTI)

A theoretical framework for the hierarchical multiscale modeling of inelastic response of heterogeneous materials has been presented. Within this multiscale framework, the second gradient is used as a non local kinematic link between the response of a material point at the coarse scale and the response of a neighborhood of material points at the fine scale. Kinematic consistency between these scales results in specific requirements for constraints on the fluctuation field. The wryness tensor serves as a second-order measure of strain. The nature of the second-order strain induces anti-symmetry in the first order stress at the coarse scale. The multiscale ISV constitutive theory is couched in the coarse scale intermediate configuration, from which an important new concept in scale transitions emerges, namely scale invariance of dissipation. Finally, a strategy for developing meaningful kinematic ISVs and the proper free energy functions and evolution kinetics is presented.

Luscher, Darby J [Los Alamos National Laboratory; Bronkhorst, Curt A [Los Alamos National Laboratory; Mc Dowell, David L [GEORGIA TECH

2009-01-01T23:59:59.000Z

426

Detecting and interpreting distortions in hierarchical organization of complex time series  

E-Print Network [OSTI]

Hierarchical organization is a cornerstone of complexity and multifractality constitutes its central quantifying concept. For model uniform cascades the corresponding singularity spectra are symmetric while those extracted from empirical data are often asymmetric. Using the selected time series representing such diverse phenomena like price changes and inter-transaction times in the financial markets, sentence length variability in the narrative texts, Missouri River discharge and Sunspot Number variability as examples, we show that the resulting singularity spectra appear strongly asymmetric, more often left-sided but in some cases also right-sided. We present a unified view on the origin of such effects and indicate that they may be crucially informative for identifying composition of the time series. One particularly intriguing case of this later kind of asymmetry is detected in the daily reported Sunspot Number variability. This signals that either the commonly used famous Wolf formula distorts the real d...

Dro?d?, Stanis?aw

2015-01-01T23:59:59.000Z

427

Photo-driven autonomous hydrogen generation system based on hierarchically shelled ZnO nanostructures  

SciTech Connect (OSTI)

A quantum dot semiconductor sensitized hierarchically shelled one-dimensional ZnO nanostructure has been applied as a quasi-artificial leaf for hydrogen generation. The optimized ZnO nanostructure consists of one dimensional nanowire as a core and two-dimensional nanosheet on the nanowire surface. Furthermore, the quantum dot semiconductors deposited on the ZnO nanostructures provide visible light harvesting properties. To realize the artificial leaf, we applied the ZnO based nanostructure as a photoelectrode with non-wired Z-scheme system. The demonstrated un-assisted photoelectrochemical system showed the hydrogen generation properties under 1 sun condition irradiation. In addition, the quantum dot modified photoelectrode showed 2 mA/cm{sup 2} current density at the un-assisted condition.

Kim, Heejin; Yong, Kijung [Surface Chemistry Laboratory of Electronic Materials, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784 (Korea, Republic of)] [Surface Chemistry Laboratory of Electronic Materials, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784 (Korea, Republic of)

2013-11-25T23:59:59.000Z

428

Performing a scatterv operation on a hierarchical tree network optimized for collective operations  

DOE Patents [OSTI]

Performing a scatterv operation on a hierarchical tree network optimized for collective operations including receiving, by the scatterv module installed on the node, from a nearest neighbor parent above the node a chunk of data having at least a portion of data for the node; maintaining, by the scatterv module installed on the node, the portion of the data for the node; determining, by the scatterv module installed on the node, whether any portions of the data are for a particular nearest neighbor child below the node or one or more other nodes below the particular nearest neighbor child; and sending, by the scatterv module installed on the node, those portions of data to the nearest neighbor child if any portions of the data are for a particular nearest neighbor child below the node or one or more other nodes below the particular nearest neighbor child.

Archer, Charles J; Blocksome, Michael A; Ratterman, Joseph D; Smith, Brian E

2013-10-22T23:59:59.000Z

429

Stanford University Sustainable Design & Construction Program  

E-Print Network [OSTI]

March 14, 2014 Y2E2 Building, Room 292E 473 Via Ortega, Stanford, CA 94305 #12;Sustainable DesignStanford University Sustainable Design & Construction Program 2014-2015 Admitted Student Open House for sophisticated structural/construction engineers " Support Design-Build Firms, Design Firms, Construction Firms

Prinz, Friedrich B.

430

ITER breeding blanket design  

SciTech Connect (OSTI)

A breeding blanket design has been developed for ITER to provide the necessary tritium fuel to achieve the technical objectives of the Enhanced Performance Phase. It uses a ceramic breeder and water coolant for compatibility with the ITER machine design of the Basic Performance Phase. Lithium zirconate and lithium oxide am the selected ceramic breeders based on the current data base. Enriched lithium and beryllium neutron multiplier are used for both breeders. Both forms of beryllium material, blocks and pebbles are used at different blanket locations based on thermo-mechanical considerations and beryllium thickness requirements. Type 316LN austenitic steel is used as structural material similar to the shielding blanket. Design issues and required R&D data are identified during the development of the design.

Gohar, Y.; Cardella, A.; Ioki, K.; Lousteau, D.; Mohri, K.; Raffray, R.; Zolti, E. [ITER Joint Central Team, Garching (Germany)] [and others

1995-12-31T23:59:59.000Z

431

Seismic design, testing and analysis of reinforced concrete wall buildings  

E-Print Network [OSTI]

of Slender Reinforced Concrete Walls”. Structural Journal,T. (1975). “Reinforced Concrete Structures”. John Wiley &Design of Reinforced Concrete and Masonry Buildings”. John

Panagiotou, Marios

2008-01-01T23:59:59.000Z

432

A direct displacement-based design of low-rise seismic resistant steel moment frames  

E-Print Network [OSTI]

Lateral Force Distribution for Seismic Design StructuralLateral Force Distribution for Seismic Design . 169stiffness distribution are additional design choices that

Harris, John L.

2006-01-01T23:59:59.000Z

433

Catalyst by Design - Theoretical, Nanostructural, and Experimental...  

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

Treatment The overlap among theory, structure, and fully formed catalysts form the foundation of this study deer09narula.pdf More Documents & Publications Catalyst by Design -...

434

Financing Program Design and Implementation Considerations  

Broader source: Energy.gov [DOE]

Designing and implementing clean energy financing programs takes more than simply identifying applicable financing structures and implementing them. State and local governments should also take...

435

Heterogeneous Modulation for Trading-off Energy Balancing with Bandwidth Efficiency in Hierarchical Sensor Networks  

E-Print Network [OSTI]

research has focused on energy efficient design in different levels of network protocol stack, much less

Pedram, Massoud

436

Hierarchically Structured Microspheres for High-Efficiency Rutile TiO2Based Dye-Sensitized Solar Cells  

E-Print Network [OSTI]

and the Ostwald ripening process. Dye-sensitized solar cells (DSSCs) assembled by employing these complex rutile method, dye-sensitized solar cells, post-treatments, light-to-electricity conversion efficiency candidate for use in water splitting, photo- catalysis, sensors, and dye-sensitized solar cells (DSSCs) over

Lin, Zhiqun

437

PHYSICAL REVIEW E 87, 012814 (2013) Carbon-dioxide emissions trading and hierarchical structure in worldwide finance  

E-Print Network [OSTI]

of the stock market indicators and those of the EU CO2 emission allowance (EUA) and crude oil futures (WTI WTI) with that of the stock market indicators, and is markedly different (>20 days) from 0, showing

Stanley, H. Eugene

438

arXiv:adap-org/9803001v110Mar1998 Large-scale evolution and extinction in a hierarchically structured  

E-Print Network [OSTI]

- veloped (Kauffman 1992). The extinction of a single species might cause another species to die out, which might drive a third species into extinction and so on, producing an avalanche that in principle could-law distribution of extinction events can appear even in a system in which species are wiped out solely because

439

PHYSICAL REVIEW B 84, 165423 (2011) Theory and hierarchical calculations of the structure and energetics of [0001] tilt grain  

E-Print Network [OSTI]

method to exfoliate graphene sheets from graphite crystals1 is, in general, found to provide perfect, defect-free graphene sheets over large length scales, but exfoliation is not suitable for large

2011-01-01T23:59:59.000Z

440

Characterization of the effects of x-ray irradiation on the hierarchical structure and mechanical properties of human cortical bone  

E-Print Network [OSTI]

in   bone   strength.   Osteoporosis  Int    2006;17:319-­??fragility   in   aging,   osteoporosis,   and   diabetes  mellitus.  Osteoporosis  Int    2010;21:195-­??214.  

Barth, Holly

2012-01-01T23:59:59.000Z

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


441

Transition metalphthalocyanines as structures for materials design  

SciTech Connect (OSTI)

Metallophthalocyanines have been used recently more and more for the preparation of materials, which exhibit interesting semiconducting and non-linear optical properties. A necessary condition for achieving, e.g. electrical properties of phthalocyanines [MacM(L)]{sub n} can be obtained by the so-called {open_quotes}shish kebab{close_quotes} approach in which transition metallomacrocycles (MacM) are linked together by bidentate bridging ligands (L). Such bridged macrocyclic metal compounds [MacM(L)]{sub n} with transition metals e.g. Fe, Ru, Os, Co, Rh in various oxidation states have been synthesized. In general, these complexes [MacM(L)]{sub n} are insoluble in organic solvents, however, soluble oligomers [R{sub 4}PcM(L)]{sub n} can be prepared using metallomacrocycles R{sub 4}PcM, R = t-bu, et, M = Fe, Ru. The influence of the bridging ligand on the conductivity of the bridged phthalocyaninato and 2,3-naphthalocyaninatotransition metal complexes is studied. As bridging ligand mostly pyrazine (pyz), 1,4-diisocyanobenzene (dib), tetrazine (tz) is used. [MacM(tz)]{sub n} exhibit intrinsic conductivities. The synthesis and characterization of [PcM(tz)], with M = Fe, Ru, Os and [2,3-NcFe(tz)]{sub n} is described. Powder conductivities in the order of 0.1 S/cm can be reached by using s-tetrazine, but also substituted tetrazine e.g. 3,6-dimethyl-s-tetrazine (me{sub 2}tz) are used as the bridging ligands in such complexes.

Hanack, M. [Universitaet Tuebingen (Germany)

1993-12-31T23:59:59.000Z

442

Designing subwavelength-structured light sources  

E-Print Network [OSTI]

The laser has long been established as the best possible optical source for fundamental studies and applications requiring high field intensity, single mode operation, a high degree of coherence, a narrow linewidth and ...

Chua, Song Liang

2013-01-01T23:59:59.000Z

443

Social significance of community structure: Statistical view  

E-Print Network [OSTI]

Community structure analysis is a powerful tool for social networks, which can simplify their topological and functional analysis considerably. However, since community detection methods have random factors and real social networks obtained from complex systems always contain error edges, evaluating the significance of community structure partitioned is an urgent and important question. In this paper, integrating the specific characteristics of real society, we present a novel framework analyzing the significance of social community specially. The dynamics of social interactions are modeled by identifying social leaders and corresponding hierarchical structures. Instead of a direct comparison with the average outcome of a random model, we compute the similarity of a given node with the leader by the number of common neighbors. To determine the membership vector, an efficient community detection algorithm is proposed based on the position of nodes and their corresponding leaders. Then, using log-likelihood sco...

Li, Hui-Jia

2015-01-01T23:59:59.000Z

444

Phases and Structures of Interstellar Gas  

E-Print Network [OSTI]

The thermal and chemical phases of the cool component of interstellar gas are discussed. Variations with galactocentric radius and from galaxy to galaxy are mostly the result of changes in the ambient interstellar pressure and radiation field. Interstellar structure that is hierarchical or fractal in the cloudy parts and has large and connected empty regions between these clouds is probably the result of turbulence. Such structure opens up the disk to the transmission of OB star light into the halo, and it provides for a diffuse ionized component that tapers away gradually from each dense HII region. Fractal cloud structure may also produce the cloud and clump mass functions, and perhaps even the star cluster mass function.

B. Elmegreen

1999-06-12T23:59:59.000Z

445

Photovoltaic Incentive Design Handbook  

SciTech Connect (OSTI)

Investments in customer-owned grid-connected photovoltaic (PV) energy systems are growing at a steady pace. This is due, in part, to the availability of attractive economic incentives offered by public state agencies and utilities. In the United States, these incentives have largely been upfront lump payments tied to the system capacity rating. While capacity-based ''buydowns'' have stimulated the domestic PV market, they have been criticized for subsidizing systems with potentially poor energy performance. As a result, the industry has been forced to consider alternative incentive structures, particularly ones that pay based on long-term measured performance. The industry, however, lacks consensus in the debate over the tradeoffs between upfront incentive payments versus longer-term payments for energy delivery. This handbook is designed for agencies and utilities that offer or intend to offer incentive programs for customer-owned PV systems. Its purpose is to help select, design, and implement incentive programs that best meet programmatic goals. The handbook begins with a discussion of the various available incentive structures and then provides qualitative and quantitative tools necessary to design the most appropriate incentive structure. It concludes with program administration considerations.

Hoff, T. E.

2006-12-01T23:59:59.000Z

446

System 80+{trademark} Standard Design: CESSAR design certification. Volume 3: Amendment I  

SciTech Connect (OSTI)

This report, entitled Combustion Engineering Standard Safety Analysis Report - Design Certification (CESSAR-DC), has been prepared in support of the industry effort to standardize nuclear plant designs. These documents describe the Combustion Engineering, Inc. System 80+{sup TM} Standard Design. This report, Volume 3, in conjunction with Volume 2, provides the design of structures, components, equipment and systems.

Not Available

1990-12-21T23:59:59.000Z

447

System 80+{trademark} Standard Design: CESSAR design certification. Volume 2: Amendment I  

SciTech Connect (OSTI)

This report, entitled Combustion Engineering Standard Safety Analysis Report - Design Certification (CESSAR-DC), has been prepared in support of the industry effort to standardize nuclear plant designs. These documents describe the Combustion Engineering, Inc. System 80+{sup TM} Standard Design. This report, Volume 2, in conjunction with Volume 3, provides the design of structures, components, equipment and systems.

Not Available

1990-12-21T23:59:59.000Z

448

A blind hierarchical coherent search for gravitational-wave signals from coalescing compact binaries in a network of interferometric detectors  

E-Print Network [OSTI]

We describe a hierarchical data analysis pipeline for coherently searching for gravitational wave (GW) signals from non-spinning compact binary coalescences (CBCs) in the data of multiple earth-based detectors. It assumes no prior information on the sky position of the source or the time of occurrence of its transient signals and, hence, is termed "blind". The pipeline computes the coherent network search statistic that is optimal in stationary, Gaussian noise, and allows for the computation of a suite of alternative statistics and signal-based discriminators that can improve its performance in real data. Unlike the coincident multi-detector search statistics employed so far, the coherent statistics are different in the sense that they check for the consistency of the signal amplitudes and phases in the different detectors with their different orientations and with the signal arrival times in them. The first stage of the hierarchical pipeline constructs coincidences of triggers from the multiple interferometers, by requiring their proximity in time and component masses. The second stage follows up on these coincident triggers by computing the coherent statistics. The performance of the hierarchical coherent pipeline on Gaussian data is shown to be better than the pipeline with just the first (coincidence) stage.

Sukanta Bose; Thilina Dayanga; Shaon Ghosh; Dipongkar Talukder

2011-04-14T23:59:59.000Z

449

Feasibility of passive electromagnetic dampers as energy harvesters in large structures  

E-Print Network [OSTI]

There has been a trend in structural design toward energy efficient design and motion based design. The strategy of motion based design is controlling the movement of structures to meet certain dynamic response requirements ...

Hendrix, Christopher (Christopher M.)

2013-01-01T23:59:59.000Z

450

A Predictive Model of Fragmentation using Adaptive Mesh Refinement and a Hierarchical Material Model  

SciTech Connect (OSTI)

Fragmentation is a fundamental material process that naturally spans spatial scales from microscopic to macroscopic. We developed a mathematical framework using an innovative combination of hierarchical material modeling (HMM) and adaptive mesh refinement (AMR) to connect the continuum to microstructural regimes. This framework has been implemented in a new multi-physics, multi-scale, 3D simulation code, NIF ALE-AMR. New multi-material volume fraction and interface reconstruction algorithms were developed for this new code, which is leading the world effort in hydrodynamic simulations that combine AMR with ALE (Arbitrary Lagrangian-Eulerian) techniques. The interface reconstruction algorithm is also used to produce fragments following material failure. In general, the material strength and failure models have history vector components that must be advected along with other properties of the mesh during remap stage of the ALE hydrodynamics. The fragmentation models are validated against an electromagnetically driven expanding ring experiment and dedicated laser-based fragmentation experiments conducted at the Jupiter Laser Facility. As part of the exit plan, the NIF ALE-AMR code was applied to a number of fragmentation problems of interest to the National Ignition Facility (NIF). One example shows the added benefit of multi-material ALE-AMR that relaxes the requirement that material boundaries must be along mesh boundaries.

Koniges, A E; Masters, N D; Fisher, A C; Anderson, R W; Eder, D C; Benson, D; Kaiser, T B; Gunney, B T; Wang, P; Maddox, B R; Hansen, J F; Kalantar, D H; Dixit, P; Jarmakani, H; Meyers, M A

2009-03-03T23:59:59.000Z

451

Chemical Enrichment at High Redshifts: Understanding the Nature of Damped Ly$?$ Systems in Hierarchical Models  

E-Print Network [OSTI]

We use cosmological hydrodynamical simulations including star formation and metal enrichment to study the evolution of the chemical properties of galaxy-like objects at high redshift in the range $0.25Hydrogen column densities with abundances and scatter comparable to those observed in damped Lyman-$\\alpha$ systems (DLAs).The unweighted mean of abundance ratios and least square linear regressions through the simulated DLAs yield intrinsic metallicity evolution for the [Zn/H] and [Fe/H], consistent with results obtained from similar analysis of available observations. Our model statistically reproduces the mild evolution detected in the metallicity of the neutral hydrogen content of the Universe, given by mass-weighted means,if observational constraints are considered (as suggested by Boiss\\'ee et al. 1998). For the $\\alpha$-elements in the simulated DLAs, we find neither enhancement nor dependence on metallicity. Our results support the hypotheses that DLAs trace a variety of galactic objects with different formation histories and that both SNI and SNII are contributing to the chemical enrichment of the gas component at least since $z \\approx 2$. This study indicates that DLAs could be understood as the building blocks that merged to form today normal galaxies within a hierarchical clustering scenario.

P. B. Tissera; D. G. Lambas M. B. Mosconi; S. A. Cora

2001-04-18T23:59:59.000Z

452

Application of adaptive hierarchical sparse grid collocation to the uncertainty quantification of nuclear reactor simulators  

SciTech Connect (OSTI)

Recent efforts in the application of uncertainty quantification to nuclear systems have utilized methods based on generalized perturbation theory and stochastic sampling. While these methods have proven to be effective they both have major drawbacks that may impede further progress. A relatively new approach based on spectral elements for uncertainty quantification is applied in this paper to several problems in reactor simulation. Spectral methods based on collocation attempt to couple the approximation free nature of stochastic sampling methods with the determinism of generalized perturbation theory. The specific spectral method used in this paper employs both the Smolyak algorithm and adaptivity by using Newton-Cotes collocation points along with linear hat basis functions. Using this approach, a surrogate model for the outputs of a computer code is constructed hierarchically by adaptively refining the collocation grid until the interpolant is converged to a user-defined threshold. The method inherently fits into the framework of parallel computing and allows for the extraction of meaningful statistics and data that are not within reach of stochastic sampling and generalized perturbation theory. This paper aims to demonstrate the advantages of spectral methods-especially when compared to current methods used in reactor physics for uncertainty quantification-and to illustrate their full potential. (authors)

Yankov, A.; Downar, T. [University of Michigan, 2355 Bonisteel Blvd, Ann Arbor, MI 48109 (United States)

2013-07-01T23:59:59.000Z

453

The 2dF Galaxy Redshift Survey: voids and hierarchical scaling models  

E-Print Network [OSTI]

We measure the redshift space reduced void probability function (VPF) for 2dFGRS volume limited galaxy samples covering the absolute magnitude range M_bJ-5logh=-18 to -22. Theoretically, the VPF connects the distribution of voids to the moments of galaxy clustering of all orders, and can be used to discriminate clustering models in the weakly non-linear regime. The reduced VPF measured from the 2dFGRS is in excellent agreement with the paradigm of hierarchical scaling of the galaxy clustering moments. The accuracy of our measurement is such that we can rule out, at a very high significance, popular models for galaxy clustering, including the lognormal distribution. We demonstrate that the negative binomial model gives a very good approximation to the 2dFGRS data over a wide range of scales, out to at least 20h-1Mpc. Conversely, the reduced VPF for dark matter in a LambdaCDM universe does appear to be lognormal on small scales but deviates significantly beyond \\approx 4h-1Mpc. We find little dependence of the 2dFGRS reduced VPF on galaxy luminosity. Our results hold independently in both the north and south Galactic pole survey regions.

D. J. Croton; M. Colless; E. Gaztanaga; C. M. Baugh; P. Norberg; I. K. Baldry; J. Bland-Hawthorn; T. Bridges; R. Cannon; S. Cole; C. Collins; W. Couch; G. Dalton; R. De Propris; S. P. Driver; G. Efstathiou; R. S. Ellis; C. S. Frenk; K. Glazebrook; C. Jackson; O. Lahav; I. Lewis; S. Lumsden; S. Maddox; D. Madgwick; J. A. Peacock; B. A. Peterson; W. Sutherland; K. Taylor

2004-08-23T23:59:59.000Z

454

Ionic liquid assisted hydrothermal fabrication of hierarchically organized ?-AlOOH hollow sphere  

SciTech Connect (OSTI)

Highlights: ? The ?-AlOOH hollow spheres were synthesized via an ionic liquid-assisted hydrothermal treatment. ? Ionic liquid plays an important role in the morphology of the product. ? Ionic liquid can be easily removed from the product and reused in next experiment. ? A “aggregation–solution–recrystallization” formation mechanism may occur in the system. -- Abstract: Hierarchically organized ?-AlOOH hollow spheres with nanoflake-like porous surface texture have been successfully synthesized via an ionic liquid-assisted hydrothermal synthesis method in citric acid monohydrate (CAMs). It was found that ionic liquid [bmim]{sup +}Cl{sup ?} played an important role in the morphology of the product due to its strong interactions with reaction particles. The samples were characterized by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscope (SEM) and Transmission Electron Microscopy (TEM). The results show that the product has narrow particle size distribution (500–900 nm particle diameter range), high specific surface area (240.5 m{sup 2}/g) and large pore volume (0.61 cm{sup 3}/g). The corresponding ?-Al{sub 2}O{sub 3} hollow spheres can be obtained by calcining it at 550 °C for 3 h. The proposed formation mechanism and other influencing factors of the ?-AlOOH hollow sphere material, such as reaction temperature, reaction duration, CAMs and urea, have also been investigated.

Tang, Zhe, E-mail: tangzhe1983@163.com [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China); Liu, Yunqi, E-mail: liuyq@upc.edu.cn [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China); Li, Guangci, E-mail: liguangci1984@yahoo.com.cn [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China); Hu, Xiaofu, E-mail: hjj19850922@126.cn [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China); Liu, Chenguang, E-mail: cgliu@upc.edu.cn [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)

2012-11-15T23:59:59.000Z

455

Reheating during Hierarchical Clustering in the Universe Dominated by the Cold Dark Matter  

E-Print Network [OSTI]

We investigate reheating of the universe by early formation of stars and quasars in the hierarchical clustering scheme of cold dark matter scenario, with perturbation fluctuations normalized by the COBE data. It is found that ionizing uv flux from OB stars with the abundance given by the standard initial mass function is strong enough to ionize the universe from $z\\approx 30$ to the present epoch, if 1--2\\% of the collapsed baryons go into stars. This lessens significantly the CMB anisotropies at a small angular scale. Reionization also increases the Jeans mass to $M_{\\rm luminous}\\approx 10^9M_\\odot$ for $z\\lsim 10$, which leads to a cut-off of the luminosity function of normal galaxies on a faint side. A strong uv flux is expected at $z\\approx 2-5$, and the null result of the Gunn-Peterson test is naturally explained. Early star formation also results in production of heavy elements, and the observational metal abundance sets a strong constraint on the photon energy injection into the intergalactic space.

M. Fukugita; M. Kawasaki

1993-09-25T23:59:59.000Z

456

The Design of an Uninhabited Air Vehicle for Remote Sensing in the Cryosphere  

E-Print Network [OSTI]

the Red, White, and Blue designs. The three designs represent three methods of integrating the radar antennas into the aircraft structure. The Red design utilizes a structurally synergistic approach where the antennas are integrated directly into the wing...

Donovan, William

2007-12-18T23:59:59.000Z

457

Catalysis-by-design impacts assessment  

SciTech Connect (OSTI)

Catalyst researchers have always recognized the need to develop a detailed understanding of the mechanisms of catalytic processes, and have hoped that it would lead to developing a theoretical predictive base to guide the search for new catalysts. This understanding allows one to develop a set of hierarchical models, from fundamental atomic-level ab-initio models to detailed engineering simulations of reactor systems, to direct the search for optimized, efficient catalyst systems. During the last two decades, the explosions of advanced surface analysis techniques have helped considerably to develop the building blocks for understanding various catalytic reactions. An effort to couple these theoretical and experimental advances to develop a set of hierarchical models to predict the nature of catalytic materials is a program entitled Catalysis-by-Design (CRD).'' In assessing the potential impacts of CBD on US industry, the key point to remember is that the value of the program lies in developing a novel methodology to search for new catalyst systems. Industrial researchers can then use this methodology to develop proprietary catalysts. Most companies involved in catalyst R D have two types of ongoing projects. The first type, what we call market-driven R D,'' are projects that support and improve upon a company's existing product lines. Project of the second type, technology-driven R D,'' are longer term, involve the development of totally new catalysts, and are initiated through scientists' research ideas. The CBD approach will impact both types of projects. However, this analysis indicates that the near-term impacts will be on market-driven'' projects. The conclusions and recommendations presented in this report were obtained by the authors through personal interviews with individuals involved in a variety of industrial catalyst development programs and through the three CBD workshops held in the summer of 1989. 34 refs., 7 figs., 7 tabs.

Fassbender, L L; Young, J K [Pacific Northwest Lab., Richland, WA (USA); Sen, R K [Sen (R.K.) and Associates, Washington, DC (USA)

1991-05-01T23:59:59.000Z

458

DESIGN SUPPORT TOOLS 599 INTERNATIONAL DESIGN CONFERENCE -DESIGN 2012  

E-Print Network [OSTI]

DESIGN SUPPORT TOOLS 599 INTERNATIONAL DESIGN CONFERENCE - DESIGN 2012 Dubrovnik - Croatia, May 21 - 24, 2012. CAN COMPUTER GRAPHIC SYSTEM BE USED TO INFORM DESIGNERS ABOUT INCLUSIVITY? E. Zitkus, P. Langdon and P. J. Clarkson Keywords: inclusive design, accessibility, CAD, design process 1. Introduction

Crilly, Nathan

459

Meta-Design--Design for Designers Gerhard Fischer  

E-Print Network [OSTI]

1 Meta-Design--Design for Designers Gerhard Fischer Center for LifeLong Learning and Design (L3 D-0430 USA gerhard@cs.colorado.edu Eric Scharff Center for LifeLong Learning and Design (L3 D) Department scharffe@cs.colorado.edu ABSTRACT One fundamental challenge for the design of the interactive systems

Fischer, Gerhard

460

Design/installation and structural integrity assessment under the Federal Facility Agreement for Bethel Valley low-level waste collection and transfer system upgrade for Building 2026 (High Radiation Level Analytical Laboratory) and Building 2099 (Monitoring and Control Station) at Oak Ridge National Laboratory  

SciTech Connect (OSTI)

This document presents a Design/Installation and Structural Integrity Assessment for a replacement tank system for portions of the Bethel Valley Low-Level Waste (LLW) System, located at the Oak Ridge Reservation, Oak Ridge, Tennessee. This issue of the assessment covers the design aspects of the replacement tank system, and certifies that the design has sufficient structural integrity and is acceptable for the storing or treating of hazardous and/or radioactive substances. This document will be reissued at a future date and will then include the assessment of the installation of the replacement tank system. The present issue identifies specific activities that must be completed during the fabrication, installation, and testing of the replacement tank system in order to provide assurance that the final installation complies with governing requirements.

Not Available

1994-11-01T23:59:59.000Z

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


461

Amr Abdelrahman, PhD Professor of Concrete Structures,  

E-Print Network [OSTI]

Amr Abdelrahman, PhD Professor of Concrete Structures, Structural Engineering Dept., Ain Shams Behavior and Design of Reinforced and Prestressed Concrete Structures and Masonry Wall Design. He conducts concrete members and design of prestressed concrete members. He is a member in the Egyptian Code for Design

462

Process monitoring interface for studying the metamorphism in a design  

SciTech Connect (OSTI)

The efforts to improve the system design methodology, which provides the designer with the ability to exercise the prototype at a high abstraction level and to delay the implementation level activity as far into the development activity as possible, have led us to study the process monitoring issue. Particularly we are interested in the three fundamental issues in process monitoring: the abstract sphere of the design, the practical sphere of the user interface, and the gap between these two spheres. Therefore, an integrated graphical user interface architecture, called Process Monitoring Interface (PMI), is introduced not only for the gap between the abstract spheres and practical affairs of building appropriate user-integrated interface but also for supervising the hierarchical human design notion of the abstract design exercised with more efficiency at the highest possible levels of the development. In using PMI, the user/developer can monitor evolution of highly abstract building blocks that are created at the very beginning of the design process and later be refined into different levels of the design, representing different levels of abstractions of a system.

Bayrak, C. [Benedict College, Columbia, SC (United States)

1996-12-31T23:59:59.000Z

463

Design Quality Criteria Design Quality Criteria  

E-Print Network [OSTI]

Design Quality Criteria 19 Chapter 2 Design Quality Criteria This chapter discusses what qualities are desirable of an application protocol design, and what quality criteria can be used when evaluating or engineering an application protocol design. We recognize that design quality must be enabled by the design

van Sinderen, Marten

464

Institute of Design Institute of Design  

E-Print Network [OSTI]

Institute of Design Institute of Design 350 N. LaSalle St. Chicago, IL 60610 312.595.4900 design The Institute of Design has continuously explored emerg- ing ideas about how design interacts with society languages and use of new media and material. The school was renamed the Institute of Design (ID) in 1944

Heller, Barbara

465

The Lifetime of Grand Design  

E-Print Network [OSTI]

The lifetime of the structure in grand design spiral galaxies is observationally ill-determined, but is essentially set by how accurately the pattern's rotation can be characterized by a single angular pattern speed. This paper derives a generalized version of the Tremaine-Weinberg method for observationally determining pattern speeds, in which the pattern speed is allowed to vary arbitrarily with radius. The departures of the derived pattern speed from a constant then provides a simple metric of the lifetime of the spiral structure. Application of this method to CO observations of NGC 1068 reveal that the pattern speed of the spiral structure in this galaxy varies rapidly with radius, and that the lifetime of the spiral structure is correspondingly very short. If this result turns out to be common in grand-design spiral galaxies, then these features will have to be viewed as highly transient phenomena.

M. R. Merrifield; R. J. Rand; S. E. Meidt

2005-11-02T23:59:59.000Z

466

Design Considerations  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office of Audit Services AuditTransatlantic Relations & the196-2011Waste viaDesign Code

467

Cross-Ontological Analytics: Combining Associative and Hierarchical Relations in the Gene Ontologies to Assess Gene Product Similarity  

SciTech Connect (OSTI)

Gene and gene product similarity is a fundamental diagnostic measure in analyzing biological data and constructing predictive models for functional genomics. With the rising influence of the gene ontologies, two complementary approaches have emerged where the similarity between two genes/gene products is obtained by comparing gene ontology (GO) annotations associated with the gene/gene products. One approach captures GO-based similarity in terms of hierarchical relations within each gene ontology. The other approach identifies GO-based similarity in terms of associative relations across the three gene ontologies. We propose a novel methodology where the two approaches can be merged with ensuing benefits in coverage and accuracy.

Posse, Christian; Sanfilippo, Antonio P.; Gopalan, Banu; Riensche, Roderick M.; Beagley, Nathaniel; Baddeley, Bob L.

2006-05-28T23:59:59.000Z

468

Design Editorial A Design Societies Federation  

E-Print Network [OSTI]

Journal of Mechanical Design Editorial A Design Societies Federation You can recognize the many faces of design by looking at the many different professional societies that promote design around the world. These societies may have roots in engineering or archi- tecture or industrial design but they all

Papalambros, Panos

469

Nuclear Reactor Safety Design Criteria  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The order establishes nuclear safety criteria applicable to the design, fabrication, construction, testing, and performance requirements of nuclear reactor facilities and safety class structures, systems, and components (SSCs) within these facilities. Cancels paragraphs 8a and 8b of DOE 5480.6. Cancels DOE O 5480.6 in part. Certified 11-18-10.

1993-01-19T23:59:59.000Z

470

Hierarchical clustering and formation of power-law correlation in 1-dimensional self-gravitating system  

E-Print Network [OSTI]

The process of formation of fractal structure in one-dimensional self-gravitating system is examined numerically. It is clarified that structures created in small spatial scale grow up to larger scale through clustering of clusters, and form power-law correlation.

Hiroko Koyama; Tetsuro Konishi

2000-08-31T23:59:59.000Z

471

Hierarchical Discriminant Regression Wey-Shiuan Hwang, Member, IEEE, and Juyang Weng, Member, IEEE  

E-Print Network [OSTI]

library technology. A central task of a multimedia information system is to efficiently store, quickly features become useless when a car image database is presented. The designer has to find another set

472

Optimal design of actively cooled panels for hypersonic vehicles: A combined  

E-Print Network [OSTI]

Optimal design of actively cooled panels for hypersonic vehicles: A combined materials, Irvine The design of materials for the thermo-structural protection of fully reus- able hypersonic

Ponce, V. Miguel

473

Design/installation and structural integrity assessment under the Federal Facility Agreement for Bethel Valley Low-Level Waste Collection and Transfer System upgrade for Building 2026 (High Radiation Level Analytical Laboratory) and Building 2099 (Monitoring and Control Station) at Oak Ridge National Laboratory  

SciTech Connect (OSTI)

This document presents a Design/Installation and Structural Integrity Assessment for a replacement tank system for portions of the Bethel Valley Low Level Waste (LLW) System, located at the Oak Ridge Reservation, Oak Ridge, Tennessee. This issue of the assessment covers the design aspects of the replacement tank system, and certifies that the design has sufficient structural integrity and is acceptable for the storing or treating of hazardous and/or radioactive substances. The present issue identifies specific activities that must be completed during the fabrication, installation, and testing of the replacement tank system in order to provide assurance that the final installation complies with governing requirements. Portions of the LLW system are several decades old, or older, and do not comply with current environmental protection regulations. Several subsystems of the LLW system have been designated to receive a state-of-the-art replacement and refurbishment. One such subsystem serves Building 2026, the High Radiation Level Analytical Laboratory. This assessment focuses on the scope of work for the Building 2026 replacement LLW Collection and Transfer System, including the provision of a new Monitoring and Control Station (Building 2099) to receive, store, and treat (adjust pH) low level radioactive waste.

Not Available

1994-10-01T23:59:59.000Z

474

MAS.961 Designing Sociable Media, Spring 2001  

E-Print Network [OSTI]

This course is about social life in the on-line world. Its focus is on how the design of the interface influences people's interactions with each other and shapes the cultural mores and structures they develop. We will ...

Donath, Judith S.

475

Rational design of hybrid organic solar cells  

E-Print Network [OSTI]

In this thesis, we will present a novel design for a nano-structured organic-inorganic hybrid photovoltaic material that will address current challenges in bulk heterojunction (BHJ) organic-based solar cell materials. ...

Lentz, Levi (Levi Carl)

2014-01-01T23:59:59.000Z

476

The x-ray crystal structure analysis of the complex formed by trypsin with the thrombin inhibitor 4-chloro-3-ethoxy-7-guanidinoisocoumarin: implications for mechanism and drug design  

E-Print Network [OSTI]

been subjected to extensive study as targets of drug and inhibitor design for a variety of reasons. Chief among them is their ubiquitous presence and involvement in key fh j l ~ f tyl d f t ~h' h ' t physiological processes, ranging from digestion... specific proteases and inhibitors could then serve as a paradigm for molecular modelling, and for drug design and synthesis in other lesser known enzyme-substrate/inhibitor systems. Two main classes of inhibitors have been studied as potential...

Chow, Margaret Mei-Shin

1990-01-01T23:59:59.000Z

477

DISPLACEMENT BASED SEISMIC DESIGN CRITERIA  

SciTech Connect (OSTI)

The USNRC has initiated a project to determine if any of the likely revisions to traditional earthquake engineering practice are relevant to seismic design of the specialized structures, systems and components of nuclear power plants and of such significance to suggest that a change in design practice might be warranted. As part of the initial phase of this study, a literature survey was conducted on the recent changes in seismic design codes/standards, on-going activities of code-writing organizations/communities, and published documents on displacement-based design methods. This paper provides a summary of recent changes in building codes and on-going activities for future codes. It also discusses some technical issues for further consideration.

HOFMAYER,C.H.

1999-03-29T23:59:59.000Z

478

Design for adaptability and deconstruction (DfAD)  

E-Print Network [OSTI]

Buildings are static elements in a dynamic environment characterized by fast changing needs and evolving environmental, social, and economic standards. Thus, today challenge for structural design through Design for ...

Mouilek, Sabrina (Sabrina Marie)

2009-01-01T23:59:59.000Z

479

Past and future of grid shell structures  

E-Print Network [OSTI]

Because of their original organic shape and the column free space that they provide, the design of grid shell structures challenges architects and structural engineers in more than one way. Very few grid shell building ...

Paoli, Céline (Céline Aude)

2007-01-01T23:59:59.000Z

480

Design wiki: a system for design sharing  

E-Print Network [OSTI]

Design wiki: a system for design sharing Wael A. Abdelhameed, Yoshihiro Kobayashi #12;Wael of Bahrain. His research areas are 3D Modeling Systems, Computing Architecture, Virtual Reality, Design Process, Visual Design Thinking and Digital and Manual Media Interaction. Yoshihiro Kobayashi is a Faculty

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


481

Institute of Design Institute of Design  

E-Print Network [OSTI]

Institute of Design Institute of Design 350 N. LaSalle St. Chicago, IL 60610 312.595.4900 main 312.595.4906 graduate study information 312.595.4901 fax design@id.iit.edu www.id.iit.edu Dean: Patrick F. Whitney The Institute of Design (ID) is defined by a legacy of experimentation joined with unique academic programs

Heller, Barbara

482

College of Design ID Interior Design  

E-Print Network [OSTI]

College of Design ID Interior Design KEY: # = new course * = course changed = course dropped University of Kentucky 2013-2014 Undergraduate Bulletin 1 ID 101 INTRODUCTION TO INTERIOR DESIGN. (1) An introduction to the profession of Interior Design: historical perspective, career specializations, and career

MacAdam, Keith

483

Design Editorial Design: The New Frontier  

E-Print Network [OSTI]

Journal of Mechanical Design Editorial Design: The New Frontier An increasingly well to 2009 NAE Inductee Class, http://www.nae.edu/18185.aspx . This linking is the new frontier for sustainable growth and innovation, and design is the surest path to realizing it. Design is the new frontier

Papalambros, Panos

484

2014 GRADUATE STUDIES STRUCTURAL ENGINEERING,  

E-Print Network [OSTI]

, the response of tall buildings to earthquake and wind; steel connection design and behavior; and structural engineering and mechanics · Advanced Applied Mathematics in Engineering · Advanced Dynamics and Smart Environments · High-performance Concrete and Steel · Horizontally Curved Bridges · Industrial Buildings

Wang, Yuhang

485

Water intrusion in underground structures  

E-Print Network [OSTI]

This thesis presents a study of the permissible groundwater infiltration rates in underground structures, the consequences of this leakage and the effectiveness of mitigation measures. Design guides and codes do not restrict, ...

Nazarchuk, Alex

2008-01-01T23:59:59.000Z

486

Modeling an automobile steering system using Axiomatic Design's Design Matrix and the Design Structure Matrix  

E-Print Network [OSTI]

The automobile steering system can be thought of as a system within a system. The steering system has clear functions and requirements as well as many interrelated components and subsystems including the front tires, wheels, ...

Bagley, Matthew R., 1966-

2005-01-01T23:59:59.000Z

487

Biosystem Dynamics & Design | EMSL  

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

Biosystem Dynamics & Design Overview Atmospheric Aerosol Systems Biosystem Dynamics & Design Energy Materials & Processes Terrestrial & Subsurface Ecosystems Biosystem Dynamics &...

488

GCFR core thermal-hydralic design  

SciTech Connect (OSTI)

The approach for developing the thermal-hydraulic core assembly designs for the gas-cooled fast reactor (GCFR) is reviewed, and key considerations for improving the core performance at all power and flow conditions are discussed. It is shown how the thermal-hydraulic core assembly designs evolve from evaluations of plant size, material limitations, safety criteria, and structural performance considerations.

Schleuter, G.; Baxi, C.B.; Bennett, F.O.

1980-05-01T23:59:59.000Z

489

Fast Wind Turbine Design via Geometric Programming  

E-Print Network [OSTI]

Fast Wind Turbine Design via Geometric Programming Warren Hoburg and Pieter Abbeel UC Berkeley turbine aerodynamics have an underlying convex mathematical structure that these new methods can exploit the application of GP to large wind turbine design problems a promising approach. Nomenclature (·)a, (·)t axial

Abbeel, Pieter

490

Remote collaboration in the design studio  

E-Print Network [OSTI]

to the needs of a distributed architectural design studio. The Collaborative Online Architectural Design Studio (COADS) is based on a three-tier client-server structure consisting of an interface tier, an application-logic tier and a data tier. COADS allows...

George, Abey M.

2005-08-29T23:59:59.000Z

491

Use of advanced composite materials for innovative building design solutions/  

E-Print Network [OSTI]

Advanced composite materials become popular in construction industry for the innovative building design solutions including strengthening and retrofitting of existing structures. The interface between different materials ...

Lau, Tak-bun, Denvid

2009-01-01T23:59:59.000Z

492

The design and development of aquatic exercise shoe flaps  

E-Print Network [OSTI]

A foam structure that is attached to the bottom of a shoe worn while exercising in the water was designed, developed, and prototyped. The structure freely bends downward so as to provide little resistance when the foot is ...

McKenney, Kyle S. (Kyle Scott)

2005-01-01T23:59:59.000Z

493

Router-level community structure of the Internet Autonomous Systems  

E-Print Network [OSTI]

The Internet is composed of routing devices connected between them and organized into independent administrative entities: the Autonomous Systems. The existence of different types of Autonomous Systems (like large connectivity providers, Internet Service Providers or universities) together with geographical and economical constraints, turns the Internet into a complex modular and hierarchical network. This organization is reflected in many properties of the Internet topology, like its high degree of clustering and its robustness. In this work, we study the modular structure of the Internet router-level graph in order to assess to what extent the Autonomous Systems satisfy some of the known notions of community structure. We show that the modular structure of the Internet is much richer than what can be captured by the current community detection methods, which are severely affected by resolution limits and by the heterogeneity of the Autonomous Systems. Here we overcome this issue by using a multiresolution d...

Beiró, Mariano G; Alvarez-Hamelin, J Ignacio

2015-01-01T23:59:59.000Z

494

The architecture of the hierarchical triple star KOI 928 from eclipse timing variations seen in Kepler photometry  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

We present a hierarchical triple star system (KIC 9140402) where a low mass eclipsing binary orbits a more massive third star. The orbital period of the binary (4.98829 Days) is determined by the eclipse times seen in photometry from NASA's Kepler spacecraft. The periodically changing tidal field, due to the eccentric orbit of the binary about the tertiary, causes a change in the orbital period of the binary. The resulting eclipse timing variations provide insight into the dynamics and architecture of this system and allow the inference of the total mass of the binary (0.424± 0.017M{circle_dot}) and the orbital parameters of the binary about the central star.

Steffen, J.H.; Quinn, S.N.; Borucki, W.J.; Brugamyer, E.; Bryson, S.T.; Buchhave, L.A.; Cochran, W.D.; Endl, M.; Fabrycky, D.C.; Ford, E.B.; Holman, M.J.

2011-07-05T23:59:59.000Z

495

Structural building response review  

SciTech Connect (OSTI)

The integrity of a nuclear power plant during a postulated seismic event is required to protect the public against radiation. Therefore, a detailed set of seismic analyses of various structures and equipment is performed while designing a nuclear power plant. This report describes the structural response analysis method, including the structural model, soil-structure interaction as it relates to structural models, methods for seismic structural analysis, numerical integration methods, methods for non-seismic response analysis approaches for various response combinations, structural damping values, nonlinear response, uncertainties in structural properties, and structural response analysis using random properties. The report describes the state-of-the-art in these areas for nuclear power plants. It also details the past studies made at Sargent and Lundy to evaluate different alternatives and the conclusions reached for the specific purposes that those studies were intended. These results were incorporated here because they fall into the general scope of this report. The scope of the present task does not include performing new calculations.

Not Available

1980-01-15T23:59:59.000Z

496

Effect of Ordered Intermediate Porosity on Ion Transport in Hierarchically Nanoporous Electrodes  

E-Print Network [OSTI]

of Illinois at Urbana-Champaign, Illinois 61801, United States § Sandia National Laboratories, Albuquerque, New Mexico 87185, United States Sandia National Laboratories, Livermore, California 94550, United a greater ability to design a balance between power density and energy density. KEYWORDS: mesoporous

Braun, Paul

497

SIGNAL PROCESSING USING LUT FILTERS BASED ON HIERARCHICAL VQ Ricardo L. de Queiroz1  

E-Print Network [OSTI]

density function). Simple, in theory, but the larger your codebook (larger M) the better the approximation sequence. VQ is fundamental to information theory since it allows us to approximate rate quality given a proper code- book design method. Hence, one might want to increase M. However, as M

de Queiroz, Ricardo L.

498

Development of a hierarchical fuzzy model for the evaluation of inherent safety  

E-Print Network [OSTI]

be evaluated and analyzed, and this is one of the major difficulties for the systematic application and quantification of inherent safety in plant design. The present research introduces the use of fuzzy logic for the measurement of inherent safety by proposing...

Gentile, Michela

2004-11-15T23:59:59.000Z

499

Inferring Latent States and Refining Force Estimates via Hierarchical Dirichlet Process Modeling in Single Particle Tracking Experiments  

E-Print Network [OSTI]

Optical microscopy provides rich spatio-temporal information characterizing in vivo molecular motion. However, effective forces and other parameters used to summarize molecular motion change over time in live cells due to latent state changes, e.g., changes induced by dynamic micro-environments, photobleaching, and other heterogeneity inherent in biological processes. This study focuses on techniques for analyzing Single Particle Tracking (SPT) data experiencing abrupt state changes. We demonstrate the approach on GFP tagged chromatids experiencing metaphase in yeast cells and probe the effective forces resulting from dynamic interactions that reflect the sum of a number of physical phenomena. State changes are induced by factors such as microtubule dynamics exerting force through the centromere, thermal polymer fluctuations, etc. Simulations are used to demonstrate the relevance of the approach in more general SPT data analyses. Refined force estimates are obtained by adopting and modifying a nonparametric Bayesian modeling technique, the Hierarchical Dirichlet Process Switching Linear Dynamical System (HDP-SLDS), for SPT applications. The HDP-SLDS method shows promise in systematically identifying dynamical regime changes induced by unobserved state changes when the number of underlying states is unknown in advance (a common problem in SPT applications). We expand on the relevance of the HDP-SLDS approach, review the relevant background of Hierarchical Dirichlet Processes, show how to map discrete time HDP-SLDS models to classic SPT models, and discuss limitations of the approach. In addition, we demonstrate new computational techniques for tuning hyperparameters and for checking the statistical consistency of model assumptions directly against individual experimental trajectories; the techniques circumvent the need for "ground-truth" and subjective information.

Christopher P. Calderon; Kerry S. Bloom

2015-01-01T23:59:59.000Z

500

OPTIMAL DESIGN OF HYBRID ELECTRIC FUEL CELL VEHICLES UNDER UNCERTAINTY AND ENTERPRISE CONSIDERATIONS  

E-Print Network [OSTI]

System research on Hybrid Electric Fuel Cell Vehicles (HEFCV) explores the tradeoffs among safety, fuel economy, acceleration, and other vehicle attributes. In addition to engineering considerations, inclusion of business aspects is important in a preliminary vehicle design optimization study. For a new technology, such as fuel cells, it is also important to include uncertainties stemming from manufacturing variability to market response to fuel price fluctuations. This paper applies a decomposition-based multidisciplinary design optimization strategy to an HEFCV. Uncertainty propagated throughout the system is accounted for in a computationally efficient manner. The latter is achieved with a new coordination strategy based on sequential linearizations. The hierarchically partitioned HEFCV design model includes enterprise, powertrain, fuel cell, and battery subsystem models. In addition to engineering uncertainties, the model takes into account uncertain behavior by consumers, and the expected maximum profit is calculated using probabilistic consumer preferences while satisfying engineering feasibility constraints. 1

Jeongwoo Han; Panos Papalambros