An Improved Ant Colony Optimisation Algorithm for the 2D HP Protein Folding Problem
Hoos, Holger H.
An Improved Ant Colony Optimisation Algorithm for the 2D HP Protein Folding Problem Alena hydrophobic-polar (2D HP) protein folding problem. We present an improved version of our recently proposed Ant search. Overall, the results presented here establish our new ACO algorithm for 2D HP protein folding
An Ant Colony Optimization Algorithm for the 2D HP Protein Folding Problem
Hoos, Holger H.
An Ant Colony Optimization Algorithm for the 2D HP Protein Folding Problem Alena Shmygelska, Rosal, the two dimensional hydrophobic-polar (2D HP) protein folding problem. We introduce an ant colony algorithm closely approaches that of specialised, state-of-the methods for 2D HP protein folding. 1
A Branch and Bound Algorithm for the Protein Folding Problem in the HP Lattice Model
Istrail, Sorin
Article A Branch and Bound Algorithm for the Protein Folding Problem in the HP Lattice Model Mao tool for the protein folding problem. Key words: protein folding, HP model, branch and bound, lattice Introduction The protein folding problem, or the protein struc- ture prediction problem, is one of the most
AN hp FINITE ELEMENT METHOD TO SOLVE A FLUID-SOLID VIBRATION PROBLEM
Rodríguez, Rodolfo
AN hp FINITE ELEMENT METHOD TO SOLVE A FLUID-SOLID VIBRATION PROBLEM CLAUDIO PADRA, RODOLFO RODR´IGUEZ , AND MARIO SCHEBLE § Abstract. This paper deals with a two-dimensional fluid-solid vibration problem arising from nuclear engineering: the vibration of elastically mounted tubes immersed in a cavity filled
hp-Cloud Approximation Of The Dirac Eigenvalue Problem: The Way Of Stability
Hasan Almanasreh
2013-04-05
We apply $hp$-cloud method to the radial Dirac eigenvalue problem. The difficulty of occurrence of spurious eigenvalues among the genuine ones in the computation is resolved. The method of treatment is based on assuming $hp$-cloud Petrov-Galerkin scheme to construct the weak formulation of the problem which adds a consistent diffusivity to the variational formulation. The size of the artificially added diffusion term is controlled by a stability parameter ($\\tau$). The derivation of $\\tau$ assumes the limit behavior of the eigenvalues at infinity. The parameter $\\tau$ is applicable for generic basis functions. This is combined with the choice of appropriate intrinsic enrichments in the construction of the cloud shape functions.
BioPS'06, October 24-25, III.19-III.26 3D HP Protein Folding Problem using Ant Algorithm
Fidanova, Stefka
BioPS ® BioPS'06, October 24-25, III.19-III.26 3D HP Protein Folding Problem using Ant Algorithm for the correct structure in the huge conformation space. Due to the complexity of the protein folding problem protein folding problem. It is based on very simple design choices in particular with respect
Hp-spectral Methods for Structural Mechanics and Fluid Dynamics Problems
Ranjan, Rakesh
2011-08-08
, consider the analysis of plates subject to external loadings, and large deformation analysis of beams with continuum based formulations. Higher order methods alleviate the problems of locking that have plagued finite element method applications...
Torres-Verdín, Carlos
code enables solution a wider class of problems, including modeling of logging-while-drilling (LWD of fast and slow formations, a formation with a soft layer, and an LWD tool, are presented. Results enhance the understanding of acoustic logs in complicated scenarios (presence of the wireline or LWD tool
hp-mesh adaptation for 1-D multigroup neutron diffusion problems
Wang, Yaqi
2007-04-25
of the requirements for the degree of MASTER OF SCIENCE Approved by: Chair of Committee, Jean C. Ragusa Committee Members, Marvin L. Adams Jean-Luc Guermond Head of Department....3.4 Equivalence with a minimization problem............................................15 2.3.5 Sobolev spaces and well-posed VBVP..................................................16 2.3.6 Continuity and coercivity of a bilinear form b(f...
hp calculators HP 50g Confidence Intervals Real Estate
Vetter, Frederick J.
hp calculators HP 50g Confidence Intervals Real Estate The STAT menu Confidence Intervals Practice finding confidence intervals Real Estate #12;hp calculators HP 50g Confidence Intervals Real Estate hp calculators - 2 - HP 50g Confidence Intervals Real Estate The STAT menu The Statistics menu
hp calculators HP 50g Hypothesis tests Real Estate
Vetter, Frederick J.
hp calculators HP 50g Hypothesis tests Real Estate The STAT menu Hypothesis tests Practice evaluating hypothesis tests Real Estate #12;hp calculators HP 50g Hypothesis tests Real Estate hp calculators - 2 - HP 50g Hypothesis tests Real Estate The STAT menu The Statistics menu is accessed from
A New Algorithm for Protein Folding in the HP Model Alantha Newman
Newman, Alantha
A New Algorithm for Protein Folding in the HP Model Alantha Newman #3; Abstract We consider the problem of protein folding in the HP model on the two-dimensional square lattice. This problem but not in the string) are present. The protein folding problem in the hydrophobic-hydrophilic (HP) model on the 2D
Pascone, S.
2011-01-01
stream_source_info ESL-IC-11-10-61.pdf.txt stream_content_type text/plain stream_size 2024 Content-Encoding ISO-8859-1 stream_name ESL-IC-11-10-61.pdf.txt Content-Type text/plain; charset=ISO-8859-1 STEAM MONITORING HP... Steam Trap Monitoring HP Steam Trap Monitoring ? 12-18 months payback! ? 3-5% permanent reduction in consumption ? LEED Pt.? Innovation in Operations EB O&M ? Saved clients over $1,000,000 Annual consumption Steam Trap Monitoring ? Real...
An Efficient Genetic Algorithm for Predicting Protein Tertiary Structures in the 2D HP Model
Istrail, Sorin
, predicting its tertiary structure is known as the protein folding problem. This problem has been widely genetic algo- rithm for the protein folding problem under the HP model in the two-dimensional square Genetic Algorithm, Protein Folding Problem, 2D HP Model 1. INTRODUCTION Amino acids are the building
Genetic Algorithm for Predicting Protein Folding in the 2D HP Model
Emmerich, Michael
Genetic Algorithm for Predicting Protein Folding in the 2D HP Model A Parameter Tuning Case Study of a protein, predicting its tertiary structure is known as the protein folding problem. This problem has been. The protein folding problem in the HP model is to find a conformation (a folded sequence) with the lowest
A New Algorithm for Protein Folding in the HP Model Alantha Newman *
Istrail, Sorin
876 A New Algorithm for Protein Folding in the HP Model Alantha Newman * Abstract We consider the problem of protein folding in the HP model ozt the two-dimensional square lattice. This problem.e.pairsof H's that are adjacent in the folding but not in the string) are present. The protein folding problem
Higher-Order Spectral/HP Finite Element Technology for Structures and Fluid Flows
Vallala, Venkat Pradeep
2013-06-20
This study deals with the use of high-order spectral/hp approximation functions in the ?nite element models of various nonlinear boundary-value and initial-value problems arising in the ?elds of structural mechanics and ...
Crystal Structure of the HP1-EMSY Complex Reveals an Unusual Mode of HP1 Binding
Huang,Y.; Myers, M.; Xu, R.
2006-01-01
Heterochromatin protein-1 (HP1) plays an essential role in both the assembly of higher-order chromatin structure and epigenetic inheritance. The C-terminal chromo shadow domain (CSD) of HP1 is responsible for homodimerization and interaction with a number of chromatin-associated nonhistone proteins, including EMSY, which is a BRCA2-interacting protein that has been implicated in the development of breast and ovarian cancer. We have determined the crystal structure of the HP1{beta} CSD in complex with the N-terminal domain of EMSY at 1.8 Angstroms resolution. Surprisingly, the structure reveals that EMSY is bound by two HP1 CSD homodimers, and the binding sequences differ from the consensus HP1 binding motif PXVXL. This structural information expands our understanding of HP1 binding specificity and provides insights into interactions between HP1 homodimers that are likely to be important for heterochromatin formation.
HP Ex Parte Memo on Proposed Rulemaking for Battery Chargers...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
HP Ex Parte Memo on Proposed Rulemaking for Battery Chargers and External Power Supplies HP Ex Parte Memo on Proposed Rulemaking for Battery Chargers and External Power Supplies...
time algorithm for d-dimensional protein folding in the HP-model
Istrail, Sorin
A 2O(n 1-1 d log n) time algorithm for d-dimensional protein folding in the HP-model Bin Fu Wei Wang Abstract The protein folding problem in the HP-model is NP-hard in both 2D and 3D [4, 6 structure. By studying how proteins fold, their functions can be better understood. The study of protein
An hp adaptive strategy to compute the vibration modes of a fluid-solid coupled system
Rodríguez, Rodolfo
)], for the operational state, the fuel assembly in nuclear plants should be designed so that they cannot be unacceptablyAn hp adaptive strategy to compute the vibration modes of a fluid-solid coupled system M element method to solve a two- dimensional fluid-structure vibration problem. This problem arises from
Parallel Ant Colony Optimization for 3D Protein Structure Prediction using the HP Lattice Model
Istrail, Sorin
of Sydney Sydney 2006, NSW Australia Abstract The Protein Folding Problem studies the way in which a protein proteins fold can be fundamental in developing treatments of diseases such as Alzeihmers and Systic of solving the HP protein folding problem in both two and three dimensions using Ant Colony Opti- mizations
Active Diesel Emission Control Technology for Sub-50 HP Engines...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Sub-50 HP Engines with Low Exhaust Temperature Profiles Active Diesel Emission Control Technology for Sub-50 HP Engines with Low Exhaust Temperature Profiles A new type of emission...
Agarwala, R. [National Institutes of Health, Bethesda, MD (United States); Batzoglou, S. [MIT, Cambridge, MA (United States); Dancik, V. [Univ. of Southern California, Los Angeles, CA (United States)] [and others
1997-06-01
We consider the problem of determining the three-dimensional folding of a protein given its one-dimensional amino acid sequence. We use the HP model for protein folding proposed by Dill, which models protein as a chain of amino acid residues that are either hydrophobic or polar, and hydrophobic interactions are the dominant initial driving force for the protein folding. Hart and Istrail gave approximation algorithms for folding proteins on the cubic lattice under HP model. In this paper, we examine the choice of a lattice by considering its algorithmic and geometric implications and argue that triangular lattice is a more reasonable choice. We present a set of folding rules for a triangular lattice and analyze the approximation ratio which they achieve. In addition, we introduce a generalization of the HP model to account for residues having different levels of hydrophobicity. After describing the biological foundation for this generalization, we show that in the new model we are able to achieve similar constant factor approximation guarantees on the triangular lattice as were achieved in the standard HP model. While the structures derived from our folding rules are probably still far from biological reality, we hope that having a set of folding rules with different properties will yield more interesting folds when combined.
Density of States for HP Lattice Proteins
Michael Bachmann; Wolfhard Janke
2007-10-22
The density of states contains all informations on energetic quantities of a statistical system, such as the mean energy, free energy, entropy, and specific heat. As a specific application, we consider in this work a simple lattice model for heteropolymers that is widely used for studying statistical properties of proteins. For short chains, we have derived exact results from conformational enumeration, while for longer ones we developed a multicanonical Monte Carlo variant of the nPERM-based chain growth method in order to directly simulate the density of states. For simplification, only two types of monomers with respective hydrophobic (H) and polar (P) residues are regarded and only the next-neighbour interaction between hydrophobic monomers, being nonadjacent along the chain, is taken into account. This is known as the HP model for the folding of lattice proteins.
Master thesis Modular mechanical engineering design tool (30hp) Background
Zhao, Yuxiao
Master thesis Modular mechanical engineering design tool (30hp. Thesis description In this thesis, the students have the opportunity to develop-time. The thesis will be run in parallel with a customer order on a customized version
HP Ex Parte Memo on Proposed Rulemaking for Battery Chargers...
Broader source: Energy.gov (indexed) [DOE]
Company (HP) appreciates the opportunity to comment on the new DOE rulemaking for Battery Chargers and External Power Supplies. Thank you for taking the time to speak with us....
V-203: HP LoadRunner Multiple Bugs Let Remote Users Deny Service...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
system. SOLUTION: The vendor has issued a fix(11.52) Addthis Related Articles V-113: Apple Safari Bugs Let Remote Users Execute Arbitrary Code V-171: Apple Safari Bugs Let...
Molecular Cell HP1 Proteins Form Distinct Complexes
, two HP1 homologs, Swi6 and Chp2, function in heterochromatic gene silencing, but their relative contribution to silencing remains unknown. Here we show that Swi6 and Chp2 exist in nonoverlapping complexes and make distinct contributions to silencing. Chp2 associates with the SHREC histone deacetylase complex
ME2804 Social Innovation and Entrepreneurship 7,5 hp
Arvestad, Lars
ME2804 Social Innovation and Entrepreneurship 7,5 hp Social Innovation and Entrepreneurship to the context of social innovation and social entrepreneurship. Through project work students will increase-oriented skills required for developing and implementing a social innovation and/or creating the social
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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgramExemptions | National NuclearProbingProbing metal2 Problem Scarcity
U-017: HP MFP Digital Sending Software Lets Local Users Obtain Potentially Sensitive Information
Broader source: Energy.gov [DOE]
A vulnerability was reported in HP MFP Digital Sending Software. A local user can obtain potentially sensitive information.
U-208: HP Operations Agent Bugs Let Remote Users Execute Arbitrary Code
Broader source: Energy.gov [DOE]
Two vulnerabilities were reported in HP Operations Agent. A remote user can execute arbitrary code on the target system
Protein Folding in the Hydrophobic-Hydrophilic (HP) Model is NP-Complete
Istrail, Sorin
Protein Folding in the Hydrophobic-Hydrophilic (HP) Model is NP-Complete Bonnie Berger* Tom Leightont Abstract One of the simplest and most popular biophysical mod- els of protein folding is the hydrophobic-hydrophilic (HP) model. The HP model abstracts the hydrophobic in- teraction in protein folding
results about bonds in the H-P model. 1 Introduction Protein folding is a central problem such as drug de- sign. One of the most popular models of protein folding is the hydrophilic-hydrophobic (H of protein folding such as the tendency for the hydrophobic components to fold to the center of a globular
Agarwala, R. [National Institutes of Health, Bethesda, MD (United States); Batzoglou, S. [MIT Lab. for Computer Science, Cambridge, MA (United States); Dancik, V. [Univ. of Southern California, Los Angeles, CA (United States)] [and others
1997-12-01
A long standing problem in molecular biology is to determine the three-dimensional structure of a protein, given its amino acid sequence. A variety of simplifying models have been proposed abstracting only the {open_quotes}essential physical properties{close_quotes} of real proteins. In these models, the three dimensional space is often represented by a lattice. Residues which are adjacent in the primary sequence (i.e. covalently linked) must be placed at adjacent points in the lattice. A conformation of a protein is simply a self-avoiding walk along the lattice. The protein folding problem STRING-FOLD is that of finding a conformation of the protein sequence on the lattice such that the overall energy is minimized, for some reasonable definition of energy. This formulation leaves open the choices of a lattice and an energy function. Once these choices are made, one may then address the algorithmic complexity of optimizing the energy function for the lattice. For a variety of such simple models, this minimization problem is in fact NP-hard. In this paper, we consider the Hydrophobic-Polar (HP) Model introduced by Dill. The HP model abstracts the problem by grouping the 20 amino acids into two classes: hydrophobic (or non-polar) residues and hydrophilic (or polar) residues. For concreteness, we will take our input to be a string from (H,P){sup +}, where P represents polar residues, and H represents hydrophobic residues. Dill et.al. survey the literature analyzing this model. 8 refs., 2 figs., 1 tab.
T-608: HP Virtual Server Environment Lets Remote Authenticated Users Gain Elevated Privileges
Broader source: Energy.gov [DOE]
A potential security vulnerability has been identified in HP Virtual Server Environment for Windows. The vulnerability could be exploited remotely to elevate privileges.
V-146: HP Service Manager Bugs Permit Cross-Site Scripting and...
Broader source: Energy.gov (indexed) [DOE]
Cross-Site Scripting and Information Disclosure Attacks PLATFORM: Service Manager v9.31 Web Tier ABSTRACT: Two vulnerabilities were reported in HP Service Manager REFERENCE LINKS:...
Broader source: Energy.gov [DOE]
A potential security vulnerability has been identified with HP-UX OpenSSL. This vulnerability could be exploited remotely to execute arbitrary code or create a Denial of Service (DoS) or an authentication bypass.
Combinatorial Problems on Strings with Applications to Protein Folding
Newman, Alantha
Combinatorial Problems on Strings with Applications to Protein Folding Alantha Newman MIT San Jose, CA 95120, USA ruhl@almaden.ibm.com Abstract We consider the problem of protein folding in linear time. 1 Introduction We consider the problem of protein folding in the HP model on the three
Fast Dynamics of HP35 for Folded and Urea-Unfolded Conditions Jean K. Chung, Megan C. Thielges,
Fayer, Michael D.
Fast Dynamics of HP35 for Folded and Urea-Unfolded Conditions Jean K. Chung, Megan C. Thielges 94305, United States *S Supporting Information ABSTRACT: The changes in fast dynamics of HP35 it folds so fast, it is a convenient system for detailed computational studies. The 35- amino-acid peptide
Torres-Verdín, Carlos
: Electrodynamics D. Pardo a,b,*, L. Demkowicz a , C. Torres-Verdi´n a,b , M. Paszynski a,1 a Institute singularities. The goal-oriented refinement strategy is an extension of a fully automatic, energy-norm based, hp and Sciences (ICES) of The University of Texas at Austin. The strategy produces automatically a sequence of hp
BNL Irradiation and Characterization Studies Summary Report on HP Accelerator Material Research
McDonald, Kirk
BNL Irradiation and Characterization Studies Summary Report on HP Accelerator Material Research Reporting on (ONLY): · Irradiation and micro- macro-characterization of Beryllium · Irradiation Damage and Assessment of Graphite · Irradiation and Characterization of Ti-alloys (Ti6Al4V and Gum Metal) · Irradiation
ME2800 Ideation -Creating a Business Idea 7,5 hp
Arvestad, Lars
models for customer, market and competitor analysis - Develop a basic business model Kursens huvudsakligaME2800 Ideation - Creating a Business Idea 7,5 hp Ideation - Creating a Business Idea Kursplan för a business opportunity - Develop and explain a business idea - Use creativity-techniques to extend
1 Fall 2015 GEON01 Quaternary geology, 15 hp Glacial sedimentology - processes, sediments and land of glacigenic sediments Part 1. Glaciology, glacial sedimentology: processes and sediment products, 6 credits) fall, 2015 Glacial sedimentology: processes, sediments and land systems Teachers: PM = Per Möller
Effect of surface attractive strength on structural transitions of a confined HP lattice protein
Pattanasiri, Busara; Li, Ying Wai; Wuest, Thomas; Landau, David P
2015-01-01
We investigate the influence of surface attractive strength on structural transitions of a hydrophobic-polar (HP) lattice protein confined in a slit formed by two parallel, attractive walls. We apply Wang-Landau sampling together with efficient Monte Carlo updates to estimate the density of states of the system. The conformational transitions, namely, the debridging process and hydrophobic core formation, can be identified by analyzing the specific heat together with several structural observables, such as the numbers of surface contacts, the number of hydrophobic pairs, and radii of gyration in different directions. As temperature decreases, we find that the occurrence of the debridging process is conditional depending on the surface attractive strength. This, in turn, affects the nature of the hydrophobic core formation that takes place at a lower temperature. We illustrate these observations with the aid of a HP protein chain with 48 monomers.
hp-finite-elements for simulating electromagnetic fields in optical devices with rough textures
Burger, S; Hammerschmidt, M; Herrmann, S; Pomplun, J; Schmidt, F; Wohlfeil, B; Zschiedrich, L
2015-01-01
The finite-element method is a preferred numerical method when electromagnetic fields at high accuracy are to be computed in nano-optics design. Here, we demonstrate a finite-element method using hp-adaptivity on tetrahedral meshes for computation of electromagnetic fields in a device with rough textures. The method allows for efficient computations on meshes with strong variations in element sizes. This enables to use precise geometry resolution of the rough textures. Convergence to highly accurate results is observed.
Wang-Landau sampling of the interplay between surface adsorption and folding of HP lattice proteins
Li, Ying Wai [ORNL] [ORNL; Wuest, Thomas [Swiss Federal Research Institute, Switzerland] [Swiss Federal Research Institute, Switzerland; Landau, David P [University of Georgia, Athens, GA] [University of Georgia, Athens, GA
2014-01-01
Generic features associated with the adsorption of proteins on solid surfaces are reviewed within the framework of the hydrophobic-polar (HP) lattice protein model. The thermodynamic behavior and structural properties of various HP protein sequences interacting with attractive surfaces have been studied using extensive Wang-Landau sampling with different types of surfaces, each of which attracts either: all monomers, only hydrophobic (H) monomers, or only polar (P) monomers, respectively. Consequently, different types of folding behavior occur for varied surface strengths. Analysis of the combined patterns of various structural observables, e.g., the derivatives of the numbers of interaction contacts, together with the specific heat, leads to the identification of fundamental categories of folding and transition hierarchies. We also inferred a connection between the transition categories and the relative surface strengths, i.e., the ratios of the surface attractive strengths to the intra-chain attraction among H monomers. We thus believe that the folding hierarchies and identification scheme are generic for different HP sequences interacting with attractive surfaces, regardless of the chain length, sequence, or surface attraction.
Monte Carlo simulations of the HP model (the "Ising model" of protein folding)
Li, Ying Wai; Landau, David P; 10.1016/j.cpc.2010.12.049
2011-01-01
Using Wang-Landau sampling with suitable Monte Carlo trial moves (pull moves and bond-rebridging moves combined) we have determined the density of states and thermodynamic properties for a short sequence of the HP protein model. For free chains these proteins are known to first undergo a collapse "transition" to a globule state followed by a second "transition" into a native state. When placed in the proximity of an attractive surface, there is a competition between surface adsorption and folding that leads to an intriguing sequence of "transitions". These transitions depend upon the relative interaction strengths and are largely inaccessible to "standard" Monte Carlo methods.
Oak Ridge National Laboratory
of the Russian HP market The experience of STIEBEL ELTRON in HP application can be taken as an example: - more - 180 kW); - object Hypercube , an innovation center Skolkovo, Moscow. STIEBEL ELTRON: - ( 140 the administration offices of the Fund and the first residents. The building is heated by Commodity Stiebel Eltron
Yu, Rong
2000-01-01
in the public domain due to their complexity and high cost. In this thesis, we present a detailed and in-depth memory system performance analysis and comparison of TPC-H benchmark characteristics on SGI Origin 2000 and HP V-Class multiprocessors. The DSS...
New approach for calibration the efficiency of HpGe detectors
Alnour, I. A. [Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia and Department of Physics, Faculty of Pure and Applied Science, International University of Africa, 12223 Khartoum (Sudan); Wagiran, H. [Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor (Malaysia); Ibrahim, N. [Faculty of Defence Science and Technology, National Defence University of Malaysia, Kem Sungai Besi, 57000 Kuala Lumpur (Malaysia); Hamzah, S.; Siong, W. B.; Elias, M. S. [Malaysia Nuclear Agency (MNA), Bangi, 43000 Kajang, Selangor (Malaysia)
2014-02-12
This work evaluates the efficiency calibrating of HpGe detector coupled with Canberra GC3018 with Genie 2000 software and Ortec GEM25-76-XLB-C with Gamma Vision software; available at Neutron activation analysis laboratory in Malaysian Nuclear Agency (NM). The efficiency calibration curve was constructed from measurement of an IAEA, standard gamma–point sources set composed by {sup 214}Am, {sup 57}Co, {sup 133}Ba, {sup 152}Eu, {sup 137}Cs and {sup 60}Co. The efficiency calibrations were performed for three different geometries: 5, 10 and 15 cm distances from the end cap detector. The polynomial parameters functions were simulated through a computer program, MATLAB in order to find an accurate fit to the experimental data points. The efficiency equation was established from the known fitted parameters which allow for the efficiency evaluation at particular energy of interest. The study shows that significant deviations in the efficiency, depending on the source-detector distance and photon energy.
Calculation of Ambient (H*(10)) and Personal (Hp(10)) Dose Equivalent from a 252Cf Neutron Source
Traub, Richard J.
2010-03-26
The purpose of this calculation is to calculate the neutron dose factors for the Sr-Cf-3000 neutron source that is located in the 318 low scatter room (LSR). The dose factors were based on the dose conversion factors published in ICRP-21 Appendix 6, and the Ambient dose equivalent (H*(10)) and Personal dose equivalent (Hp(10)) dose factors published in ICRP Publication 74.
Uppsala Universitet
Degree project 30hp, (20 weeks) at Q-linea AB, Uppsala. The project is aimed to test and evaluate-lineas sepsis project. Based on a novel and proprietary molecular platform, Q-linea develops fully automated
Open Problems, Solved Problems !
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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeeding access toOctober 1996Technologies /June 2011June 2015 runtimeProblems,
DOEIEV-0005/33 ANL-OHS/HP-82-104 FORMERLY UTILIZED MED/AEC SITES
Office of Legacy Management (LM)
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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and700, 1.Reports1 Rev. 033 ANL-OHS/HP-82-104
Long Proteins with Unique Optimal Foldings in the H-P Model ?
state of proteins is a global energy minimum, and (2) in most cases proteins fold to a unique state model designed to answer qualitative questions about the protein folding process. In this paper we; 1 Introduction Protein folding [14,22,30] is a central problem in molecular and computational
Long Proteins with Unique Optimal Foldings in the H-P Model
Demaine, Erik
is a global energy minimum, and (2) in most cases proteins fold to a unique state determined by their amino to answer qualitative questions about the protein folding process. In this paper we consider a problem-MEC PB98- 0933. Preprint submitted to Elsevier Science 21 January 2002 #12;1 Introduction Protein folding
First search for double beta decay of platinum by ultra-low background HP Ge gamma spectrometry
P. Belli; R. Bernabei; F. Cappella; R. Cerulli; F. A. Danevich; A. Di Marco; A. Incicchitti; M. Laubenstein; S. S. Nagorny; S. Nisi; O. G. Polischuk; V. I. Tretyak
2011-04-29
A search for double beta processes in 190Pt and 198Pt was realized with the help of ultra-low background HP Ge 468 cm^3 gamma spectrometer in the underground Gran Sasso National Laboratories of the INFN (Italy). After 1815 h of data taking with 42.5 g platinum sample, T_{1/2} limits on 2beta processes in 190Pt (\\epsilon\\beta^+ and 2\\epsilon) have been established on the level of 10^{14}-10^{16} yr, 3 to 4 orders of magnitude higher than those known previously. In particular, a possible resonant double electron capture in 190Pt was restricted on the level of 2.9 \\times 10^{16} yr at 90% C.L. In addition, T_{1/2} limit on 2 beta^- decay of 198Pt (2\
Analysis and testing of the HP-R-214 dome monitor cable from Three Mile Island Unit 2
Richards, E.H.; Dandini, V.J.
1986-03-01
After the accident at Three Mile Island, Unit 2, two sections of a cable connected to the HP-R-214 dome monitor were removed for testing. One section had been directly exposed to the accident environment: the other had been installed in conduit. In addition, an unused section of cable, which was from the same reel as the dome monitor cable, was available as a control sample. These three sections were subjected to material tests, including density profiling, tensile-strength and elongation tests, and chemical analyses, to assess the effect of the accident on the cable and to identify whether any differences existed between the in-conduit and out-of-conduit sections.
Annual Mass Balance Of Blue Glacier, U.S.A.: 1955-97 H. CONWAY, L. A. RASMUSSEN, and H.-P. MARSHALL
Rasmussen, L.A.
Annual Mass Balance Of Blue Glacier, U.S.A.: 1955-97 H. CONWAY, L. A. RASMUSSEN, and H.-P. MARSHALL with other glaciers in the region and elsewhere in the world. Glacier-average annual mass balances, beginning balance. Two alternative time series of mass balance consistent with the long-term mass changes
Chen, .Dake
the climate through the penetration depth of solar radiation in the upper ocean (Hp), a primary parameter on penetrative solar radiation in the tropical Pacific, demonstrating the dynamical implication of remotely in which incident solar radiation is absorbed in the mixed layer and the verti- cal penetration down
SRC burn test in 700-hp oil-designed boiler. Volume 1. Integrated report. Final technical report
Not Available
1983-09-01
This burn test program was conducted during the period of August 1982 to February 1983 to demonstrate that Solvent Refined Coal (SRC) products can displace petroleum as a boiler fuel in oil- and gas-designed boilers. The test program was performed at the U.S. Department of Energy's Pittsburgh Energy Technology Center (PETC). Three forms of SRC (pulverized SRC, a solution of SRC dissolved in process-derived distillates, and a slurry of SRC and water) and No. 6 Fuel Oil were evaluated in the 700-hp (30 x 10/sup 6/ Btu/hour) watertube, oil-designed boiler facility at PETC. The test program was managed by the International Coal Refining Company (ICRC) and sponsored by the Department of Energy. Other organizations were involved as necessary to provide the expertise required to execute the test program. This final report represents an integrated overview of the test program conducted at PETC. More detailed information with preliminary data can be obtained from separate reports prepared by PETC, Southern Research Institute, Wheelabrator-Frye, Babcock and Wilcox, and Combustion Engineering. These are presented as Annex Volumes A-F. 25 references, 41 figures, 15 tables.
Florentin Smarandache
2000-10-13
Thirty original and collected problems, puzzles, and paradoxes in mathematics and physics are explained in this paper, taught by the author to the elementary and high school teachers at the University of New Mexico - Gallup in 1997-8 and afterwards. They have more an educational interest, because make the students think different! For each "solution" a funny logic is invented in order to give the problem a sense.
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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article)ForthcomingGENERAL ASSIGNMENT KNOW ALL MENGLOBAL
T. J. Davidge
1999-09-23
Images recorded through J, H, Ks, 2.2 micron continuum, and 2.3 micron CO filters are used to investigate the stellar contents of the low Galactic latitude globular clusters NGC 6528, Liller 1, Djorgovski 1, and HP 1, as well as surrounding bulge fields. Metallicities are estimated for the latter three clusters by comparing the colors and CO indices of giant branch stars with those in other clusters and the bulge, while reddenings are estimated from the colors of bright bulge stars in the surrounding fields. In some cases the metallicities and reddenings are significantly different from previous estimates.
Wang, Liang-Wei; Liu, Yu-Nan; Lyu, Ping-Chiang; Jackson, Sophie E.; Hsu, Shang-Te Danny
2015-01-01
is the gas constant and T is the sample temperature, which is 298 K. Theses parameters are subsequently used to calculate the free energy of unfolding associated with this reaction is follows: ! " G N #D = #RT ln k u H 2 O k f H 2 O... -values, which are indicative of parallel folding pathways, the same may also apply to wt HP0242. We next carried out an unconventional double-jump refolding experiment whereby the denatured protein was first refolded to intermediate state to build up...
Mechergui, J.; Belam, W.
2008-12-01
Potassium manganese(III) monohydrogentriphosphate KMnHP{sub 3}O{sub 10} was synthesized by flux method and characterized by single-crystal X-ray diffraction, crystallizes in the monoclinic system with centric space group C2/c. The parameters of the unit cell are a = 12.104(1), b = 8.287(1). c = 9.150(1) A, {beta} = 110.97(1) deg. and Z = 4. The structure was solved at 296 K using 893 independent reflections and refined until R(F) = 0.022; wR(F{sup 2}) = 0.045. The atomic arrangement of the title compound consists of MnO{sub 6} octahedra linked by hydrogentriphosphate anions to form a three-dimensional framework containing tunnels parallel to the c-axis where the K{sup +} cations are inserted. The structure of KMnHP{sub 3}O{sub 10} contains a single Mn site which is surrounded by typical Jahn-Teller [2 + 2 + 2] distorted octahedron. The title material has been also characterized by different physico-chemical techniques: powder X-ray diffraction, IR, NMR and CI spectroscopies and DTA-TGA-DSC thermal analysis.
Problem Solving Framework Read the problem carefully.
Minnesota, University of
Problem Solving Framework Read the problem carefully. Draw a useful picture (sketch) that shows how identified in Step 1. 1. Understand the Problem 2. Analyze the Problem 3. Construct a Solution Apply constraint equations) to eliminate the unwanted unknowns? Use math (algebra/calculus) to solve for target
Alan Black; Arnis Judzis
2005-09-30
This document details the progress to date on the OPTIMIZATION OF DEEP DRILLING PERFORMANCE--DEVELOPMENT AND BENCHMARK TESTING OF ADVANCED DIAMOND PRODUCT DRILL BITS AND HP/HT FLUIDS TO SIGNIFICANTLY IMPROVE RATES OF PENETRATION contract for the year starting October 2004 through September 2005. The industry cost shared program aims to benchmark drilling rates of penetration in selected simulated deep formations and to significantly improve ROP through a team development of aggressive diamond product drill bit--fluid system technologies. Overall the objectives are as follows: Phase 1--Benchmark ''best in class'' diamond and other product drilling bits and fluids and develop concepts for a next level of deep drilling performance; Phase 2--Develop advanced smart bit-fluid prototypes and test at large scale; and Phase 3--Field trial smart bit--fluid concepts, modify as necessary and commercialize products. As of report date, TerraTek has concluded all Phase 1 testing and is planning Phase 2 development.
Goddard, Wayne
the problem Solving the rephrased problem A spectrum of generalizations Further improvements Improving Brooks Landon Rabern A prison problem Some background The Ore-degree Rephrasing the problem Solving background 3 The Ore-degree 4 Rephrasing the problem 5 Solving the rephrased problem Kierstead and Kostochka
Torres-Verdín, Carlos
hp-Adaptive Multiphysics Finite Element Simulation of LWD Borehole Sonic Waveforms Pawel J-physics, finite-element method to simulate LWD borehole acoustic waveforms in the presence of the tool. The method truncation of the spatial domain. Examples of appli- cation are shown for the simulation of LWD sonic
Minnesota, University of
Chapter 2 Cooperative Problem Solving Page I. How do I coach students in problem solving? 13 II in Problem Solving? Your role during discussion and lab sessions is to coach students in physics problem solving, particularly the qualitative analysis of the problem. That is, you want to coach students so
Minnesota, University of
Chapter 2 Cooperative Problem Solving Page I. How do I coach students in problem solving? 13 II Students in Problem Solving? Your role during discussion and lab sessions is to coach students in physics problem solving, particularly the qualitative analysis of the problem. That is, you want to coach students
Suppose a problem is worth p points. If the student cannot solve the problem and states "I can't solve the problem because of .... ", he or she will be rewarded ...
Wang, Fang
2014-06-26
inverse problem to optimization problems of minimizing the norm of the data misfit plus a weighted regularization functional that incorporates the a priori information we may have about the original problem. The choices of the regularization functional r(q...
TerraTek
2007-06-30
A deep drilling research program titled 'An Industry/DOE Program to Develop and Benchmark Advanced Diamond Product Drill Bits and HP/HT Drilling Fluids to Significantly Improve Rates of Penetration' was conducted at TerraTek's Drilling and Completions Laboratory. Drilling tests were run to simulate deep drilling by using high bore pressures and high confining and overburden stresses. The purpose of this testing was to gain insight into practices that would improve rates of penetration and mechanical specific energy while drilling under high pressure conditions. Thirty-seven test series were run utilizing a variety of drilling parameters which allowed analysis of the performance of drill bits and drilling fluids. Five different drill bit types or styles were tested: four-bladed polycrystalline diamond compact (PDC), 7-bladed PDC in regular and long profile, roller-cone, and impregnated. There were three different rock types used to simulate deep formations: Mancos shale, Carthage marble, and Crab Orchard sandstone. The testing also analyzed various drilling fluids and the extent to which they improved drilling. The PDC drill bits provided the best performance overall. The impregnated and tungsten carbide insert roller-cone drill bits performed poorly under the conditions chosen. The cesium formate drilling fluid outperformed all other drilling muds when drilling in the Carthage marble and Mancos shale with PDC drill bits. The oil base drilling fluid with manganese tetroxide weighting material provided the best performance when drilling the Crab Orchard sandstone.
Grillo, P.; Natarajan, S.
1996-12-31
The paper analyzes the implications in design of subsea completion for exploitation of HP/HT hydrocarbon reservoirs. The paper characterizes limitations associated with current subsea technology for HP/HT applications and outlines the engineering and technological development considered necessary to demonstrate the viability of subsea production technology for the exploitation of HP/HT reservoirs.
Solving Vibrational Problems... So easy!! Solving Vibrational Problems... So easy!!
California at Santa Cruz, University of
#12;Solving Vibrational Problems... So easy!! #12;Solving Vibrational Problems... So easy!! #12;Solving Vibrational Problems... So easy!! #12;Solving Vibrational Problems... So easy!! ...right? · How
Introduction Actual Industrial Problems
Nigam, Nilima
Introduction Actual Industrial Problems What's needed? Is there really interesting mathematics in Industry? Can mathematicians contribute to society, and do we want to...? Nilima Nigam Department Mathematics in Industry #12;Introduction Actual Industrial Problems What's needed? Some controversial
Counting Problems involving Symmetry
Donu Arapura
2013-04-12
Group theory can be applied to counting problems invloving symmetry. Here ... problem is to count the set of orbits H/S3. ... a partition of G. By corollary 3.10,.
Counting Problems involving Symmetry*
Group theory can be applied to counting problems invloving symmetry. Here ... problem is to count the set of orbits H/S3. .... a partition of G. By corollary 2.3,.
Alan Black; Arnis Judzis
2003-10-01
This document details the progress to date on the OPTIMIZATION OF DEEP DRILLING PERFORMANCE--DEVELOPMENT AND BENCHMARK TESTING OF ADVANCED DIAMOND PRODUCT DRILL BITS AND HP/HT FLUIDS TO SIGNIFICANTLY IMPROVE RATES OF PENETRATION contract for the year starting October 2002 through September 2002. The industry cost shared program aims to benchmark drilling rates of penetration in selected simulated deep formations and to significantly improve ROP through a team development of aggressive diamond product drill bit--fluid system technologies. Overall the objectives are as follows: Phase 1--Benchmark ''best in class'' diamond and other product drilling bits and fluids and develop concepts for a next level of deep drilling performance; Phase 2--Develop advanced smart bit--fluid prototypes and test at large scale; and Phase 3--Field trial smart bit--fluid concepts, modify as necessary and commercialize products. Accomplishments to date include the following: 4Q 2002--Project started; Industry Team was assembled; Kick-off meeting was held at DOE Morgantown; 1Q 2003--Engineering meeting was held at Hughes Christensen, The Woodlands Texas to prepare preliminary plans for development and testing and review equipment needs; Operators started sending information regarding their needs for deep drilling challenges and priorities for large-scale testing experimental matrix; Aramco joined the Industry Team as DEA 148 objectives paralleled the DOE project; 2Q 2003--Engineering and planning for high pressure drilling at TerraTek commenced; 3Q 2003--Continuation of engineering and design work for high pressure drilling at TerraTek; Baker Hughes INTEQ drilling Fluids and Hughes Christensen commence planning for Phase 1 testing--recommendations for bits and fluids.
Optimization Problems in Machine
Grossmann, Ignacio E.
classification l Optical character recognition l Automatically read digits in zip code l 256 dim vector of pixels #12;Binary classification problem + - Two sets of labeled points 2/15/12 EWO Seminar 2 #12;Binary classification problem + - How to label this new point? 2/15/12 EWO Seminar 3 #12;Binary classification problem
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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAboutXuRod Hunt (208) 386-5254 Washington575MAYEvents leading
Drinking Water Problems: Copper
Dozier, Monty; McFarland, Mark L.; Lesikar, Bruce J.
2006-01-25
High levels of copper in drinking water can cause health problems. This publication explains the effects of copper in water and methods of removing it. 4 pp....
Sandia National Laboratories Problem
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Problem Natural disasters such as Hurricane Katrina in New Orleans and the tsunami in Japan in 2011 create emergency situations that must be dealt with quickly and...
1910-51-11
Dec 12, 2005 ... COPIES ARE AVAILABLE IN THE MATH LIBRARY. PROBLEM OF THE ... B. 1. C. 1 coincide; and subject to (1) and (2), ?A. 1. B ... PROBLEM OF THE WEEK, 8th Floor, Math Sciences Bldg., Purdue Univ.,. 150 North University ...
Problem planowania paintednot painted
Wojna, Arkadiusz
ËÞØÙ ÞÒ ÁÒØ Ð Ò ËÝ×Ø ÑÝ ÓÖ Þ ÈÐ ÒÓÛ Ò ÈÐ ÒÓÛ Ò ½ #12;Problem planowania paintednot painted ceiling ? ceiling ÈÐ ÒÓÛ Ò ¾ #12;Problem planowania stir-paint not painted ceiling ceiling paintedpaint ceiling get-paint get-ladder mount-ladder ÈÐ ÒÓÛ Ò ¿ #12;Jezyk STRIPS: stany Ê ÔÖ Þ ÒØÙ Û ÐÓÛ ×Ø ÒÝ ÓÔ
The Guderley problem revisited
Ramsey, Scott D [Los Alamos National Laboratory; Kamm, James R [Los Alamos National Laboratory; Bolstad, John H [NON LANL
2009-01-01
The self-similar converging-diverging shock wave problem introduced by Guderley in 1942 has been the source of numerous investigations since its publication. In this paper, we review the simplifications and group invariance properties that lead to a self-similar formulation of this problem from the compressible flow equations for a polytropic gas. The complete solution to the self-similar problem reduces to two coupled nonlinear eigenvalue problems: the eigenvalue of the first is the so-called similarity exponent for the converging flow, and that of the second is a trajectory multiplier for the diverging regime. We provide a clear exposition concerning the reflected shock configuration. Additionally, we introduce a new approximation for the similarity exponent, which we compare with other estimates and numerically computed values. Lastly, we use the Guderley problem as the basis of a quantitative verification analysis of a cell-centered, finite volume, Eulerian compressible flow algorithm.
Linear Programming brewer's problem
Sedgewick, Robert
: Brewer's problem Small brewery produces ale and beer. · Production limited by scarce resources: corn A 0 B 0 Small brewery produces ale and beer. · Production limited by scarce resources: corn, hops
Sprott, L. R.
1998-03-12
Calving difficulty, or dystocia, is influenced largely by genetics and the age of the dam. The main cause of calving problems is heavy birthweight. Solutions include selecting the right bull and mating it to properly developed heifers....
2014-12-11
the step-size parameter for quadratic programing problems. ... We denote the set of real numbers with R and define the set of positive (nonnegative) real numbers as R++ .... where ? > 0 are abound in statistics, machine learning, and control.
Guowu Meng
2014-12-04
For each simple euclidean Jordan algebra $V$, we introduce the analogue of hamiltonian, angular momentum and Laplace-Runge-Lenz vector in the Kepler problem. Being referred to as the universal hamiltonian, universal angular momentum and universal Laplace-Runge-Lenz vector respectively, they are elements in (essentially) the TKK (Tits-Kantor-Koecher) algebra of $V$ and satisfy commutation relations similar to the ones for the hamiltonian, angular momentum and Laplace-Runge-Lenz vector in the Kepler problem. We also give some examples of Poisson realization of the TKK algebra, along with the resulting classical generalized Kepler problems. For the simplest simple euclidean Jordan algebra (i.e., $\\mathbb R$), we give examples of operator realization for the TKK algebra, along with the resulting quantum generalized Kepler problems.
Pauli problem in thermodynamics
Artur E. Ruuge
2013-08-01
A thermodynamic analogue of the Pauli problem (reconstruction of a wavefunction from the position and momentum distributions) is formulated. The coordinates of a quantum system are replaced by the inverse absolute temperature and other intensive quantities, and the Planck constant is replaced by the Boltzmann constant multiplied by two. A new natural mathematical generalization of the quasithermodynamic fluctuation theory is suggested and sufficient conditions for the existence of asymptotic solutions of the thermodynamic Pauli problem are obtained.
Learning ProblemSolving Concepts by Reflecting on Problem Solving
Goel, Ashok
Learning ProblemSolving Concepts by Reflecting on Problem Solving Eleni Stroulia and Ashok K. Goel Learning and problem solving are intimately related: problem solving determines the knowledge requirements of the reasoner which learning must fulfill, and learning enables improved problemsolving performance. Different
Problem Solving 1 Polya's Four Phases of Problem Solving
Lee, Carl
Problem Solving 1 Polya's Four Phases of Problem Solving The following comes from the famous book by George Polya called How to Solve It. 1. Understanding the Problem. You have to understand the problem restate it still differently? Go back to definitions. If you cannot solve the proposed problem try
John A. Tomsick
2008-12-16
For microquasars, the one time when these systems exhibit steady and powerful jets is when they are in the hard state. Thus, our understanding of this state is key to learning about the disk/jet connection. Recent observational and theoretical results have led to questions about whether we really understand the physical properties of this state, and even our basic picture of this state is uncertain. Here, I discuss some of the recent developments and possible problems with our understanding of this state. Overall, it appears that the strongest challenge to the standard truncated disk picture is the detection of broad iron features in the X-ray spectra, and it seems that either there is a problem with the truncated disk picture or there is a problem with the relativistic reflection models used to explain the broad iron features.
Masahiro Imachi; Yasuhiko Shinno; Hiroshi Yoneyama
2006-01-13
The sign problem is notorious in Monte Carlo simulations of lattice QCD with the finite density, lattice field theory (LFT) with a $\\theta$ term and quantum spin models. In this report, to deal with the sign problem, we apply the maximum entropy method (MEM) to LFT with the $\\theta$ term and investigate to what extent the MEM is applicable to this issue. Based on this study, we also make a brief comment about lattice QCD with the finite density in terms of the MEM.
Introduction Optimal Control Problem
Grigorieva, Ellina V.
and Computational Simulations Ellina Grigorieva and Evgenii Khailov Optimal control of a waste water cleaning plant Khailov Optimal control of a waste water cleaning plant #12;Introduction Model Optimal Control Problem applications will be discussed. Ellina Grigorieva and Evgenii Khailov Optimal control of a waste water cleaning
Drinking Water Problems: Corrosion
valves and other water control surfaces, creating leaks inside and outside of valves and faucetsDrinking Water Problems: Corrosion Mark L. McFarland, Tony L. Provin, and Diane E. Boellstorff* Professor and Extension Water Quality Coordinator, Professor and Extension Water Testing Laboratory Director
Emery, V.J. [Brookhaven National Lab., Upton, NY (United States); Kivelson, S.A. [California Univ., Los Angeles, CA (United States). Dept. of Physics
1993-12-31
In the past few years there has been a resurgence of interest in dynamical impurity problems, as a result of developments in the theory of correlated electron systems. The general dynamical impurity problem is a set of conduction electrons interacting with an impurity which has internal degrees of freedom. The simplest and earliest example, the Kondo problem, has attracted interest since the mid-sixties not only because of its physical importance but also as an example of a model displaying logarithmic divergences order by order in perturbation theory. It provided one of the earliest applications of the renormalization group method, which is designed to deal with just such a situation. As we shall see, the antiferromagnetic Kondo model is controlled by a strong-coupling fixed point, and the essence of the renormalization group solution is to carry out the global renormalization numerically starting from the original (weak-coupling) Hamiltonian. In these lectures, we shall describe an alternative route in which we identify an exactly solvable model which renormalizes to the same fixed point as the original dynamical impurity problem. This approach is akin to determining the critical behavior at a second order phase transition point by solving any model in a given universality class.
Prisoner Problems Tyler Seacrest
Marley, Tom
Prisoner Problems Tyler Seacrest University of Nebraska-Lincoln December 3, 2010 #12;The Setup #12;The Setup One day, when the warden of Puzzlania maximum security prison is bored, he decides to subject all his prisoners to a devious mathematical game. They are free to discuss strategy beforehand
Eagar, Thomas W.
Problems in Engineering and Science Education Why Do We Have a Weakness in Materials Synthesis, Materials Science and Engineering in the 1990s: Maintaining Competitiveness in the Age of Materials science and engi- neering alone; it is symptomatic of the way we teach all science and engineering. We
Problem Solving 401, Spring 1997
Reserve: G. Polya, How to Solve it. GRADING POLICY: The grading system is designed to foster habits which aid in problem solving. Suppose a problem is ...
The inhibiting bisection problem.
Pinar, Ali
2010-11-01
Given a graph where each vertex is assigned a generation or consumption volume, we try to bisect the graph so that each part has a significant generation/consumption mismatch, and the cutsize of the bisection is small. Our motivation comes from the vulnerability analysis of distribution systems such as the electric power system. We show that the constrained version of the problem, where we place either the cutsize or the mismatch significance as a constraint and optimize the other, is NP-complete, and provide an integer programming formulation. We also propose an alternative relaxed formulation, which can trade-off between the two objectives and show that the alternative formulation of the problem can be solved in polynomial time by a maximum flow solver. Our experiments with benchmark electric power systems validate the effectiveness of our methods.
EECBG Success Story: Grant Improves Comfort for Nevada City's...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
depot. There was just one problem: it was built before central heating or air-conditioning. Learn more. Addthis Related Articles Metal halide light fixtures at Pompey Park...
Torres-Verdín, Carlos
,q A - f 2 n q,nf ·u I = gex,q ex Cu,w E - s2 n u,w E + pns,w I = 0, where p(x,n) is a Fourier transform is posed in the frequency domain and solved for a particular angular frequency n. Accordingly, weak the form of the coupled problem reads as Find (u, p) (¯u, ¯p)+H1 0,D(E)×H1 0,D(A) : (1) p,q A - k2 n p
A Problem Generator Jorg Fliege
Fliege, JÃ¶rg
A Problem Generator Jorg Fliege Fachbereich Mathematik Universitat Dortmund 44221 Dortmund;nd a new, previously unconsidered one. We propose a problem generator that can auto- matically generate new optimization problems. These problems can then be analyzed by scientists with, e. g., standard
Kalas, Paul G.
://www.nytimes.com/2007/04/10/sports/football/11cndnfl.html?_r=1&hp=&oref=slogin&pagewanted=print April 10, 2007 N was suspended today for the entire 2007 football season and Cincinnati Bengals receiver Chris Henry was suspended for the first eight games as the National Football League began to crack down on players who
Solving the Bargaining Problem
Schellenberg, James A.
1990-01-01
of the available utility binot. affect the solution; only the 4. The assumption of Pareto o~~r;:,a~~tyatI~ sh~uld affect the solution. cannot be a solution when there is · s . olds that an outcome of the players could do better and thanothher feasible outcome where... theory of collective bar ~ ~cess-based model, namely in Zeuthen's earlier Harsanyi solution conce~t ~n~fierocesse~d· Evden today the .Zeuthen-Nash- n consi ere the appropriate theoretical 80 Solving the Bargaining Problem resolution for the bargaining...
Olaf Dreyer
2009-04-22
Attempts to quantize general relativity encounter an odd problem. The Hamiltonian that normally generates time evolution vanishes in the case of general relativity as a result of diffeomorphism invariance. The theory seems to be saying that time does not exist. The most obvious feature of our world, namely that time seems to progress and that the world changes accordingly becomes a problem in this presumably fundamental theory. This is called the problem of time. In this essay we argue that this problem is the result of an unphysical idealization. We are caught in this "problem of time" trap because we took a wrong turn in the early days of relativity by permanently including a split of geometry and matter into our physical theories. We show that another possibility exists that circumvents the problem of time and also sheds new light on other problems like the cosmological constant problem and the horizon problem in early universe cosmology.
Nuclear Problems in Astrophysics
W. C. Haxton
2003-01-03
These lectures, presented at the International School of Physics ``Enrico Fermi,'' deal with two major themes. The first is the remarkable story of the solar neutrino problem, which (along with the atmospheric neutrino anomaly) recently led to the discovery of massive neutrinos and neutrino oscillations, physics beyond the standard model. I will describe the physics of the standard solar model (SSM), the experimental program that was motivated by the discrepancies between SSM predictions and the initial observations of Raymond Davis, Jr., and his colleagues, and the recent results of SNO and SuperKamiokande. These first lectures end with a description of what we have learned about neutrino oscillations and the neutrino mass matrix, as well as the open questions (neutrino charge conjugation properties, the absolute mass scale, CP violation) that could ultimately impact our understanding of baryogenesis, the origin of large-scale structure, and other topics in cosmology and astrophysics. The second theme is the core-collapse supernova mechanism and associated nucleosynthesis. This problem connects neutrino physics, which controls much of the nuclear physics of the star, with the long-term chemical evolution of our galaxy. In particular, the $r$-process, which produces about half of the heavy elements, remains poorly understood, despite important new constraints from studies of metal-poor halo stars. The possible role of new neutrino properties on both the explosion mechanism and nucleosynthesis is noted.
The Primordial Lithium Problem
Brian D. Fields
2012-03-15
Big-bang nucleosynthesis (BBN) theory, together with the precise WMAP cosmic baryon density, makes tight predictions for the abundances of the lightest elements. Deuterium and 4He measurements agree well with expectations, but 7Li observations lie a factor 3-4 below the BBN+WMAP prediction. This 4-5\\sigma\\ mismatch constitutes the cosmic "lithium problem," with disparate solutions possible. (1) Astrophysical systematics in the observations could exist but are increasingly constrained. (2) Nuclear physics experiments provide a wealth of well-measured cross-section data, but 7Be destruction could be enhanced by unknown or poorly-measured resonances, such as 7Be + 3He -> 10C^* -> p + 9B. (3) Physics beyond the Standard Model can alter the 7Li abundance, though D and 4He must remain unperturbed; we discuss such scenarios, highlighting decaying Supersymmetric particles and time-varying fundamental constants. Present and planned experiments could reveal which (if any) of these is the solution to the problem.
Parallel problem generation for structured problems in mathematical programming
Qiang, Feng
2015-11-26
The aim of this research is to investigate parallel problem generation for structured optimization problems. The result of this research has produced a novel parallel model generator tool, namely the Parallel Structured ...
Kovac, F.M.
1995-12-31
The 21PF overpack has had severe metal corrosion and stress corrosion cracking (SCC) for many years. The US Department of Transportation (DOT) and the US Nuclear Regulatory Commission (NRC) have disallowed the use of overpacks containing high chloride foam. Corrosion and SCC of 21PF overpacks have been documented and papers have been presented at conferences about these issues. Regulatory agencies have restricted 21PF overpack use and have requested data to determine if phenolic foam overpacks not meeting original design specifications will be authorized for continued use. This paper details some of the problems experienced by users and relates actions of the DOT and NRC concerning these packages. Industry is working to correct deficiencies, but if they are not successful, the entire uranium enrichment industry will be severely impacted.
The Inhibiting Bisection Problem
Pinar, Ali; Fogel, Yonatan; Lesieutre, Bernard
2006-12-18
Given a graph where each vertex is assigned a generation orconsumption volume, we try to bisect the graph so that each part has asignificant generation/consumption mismatch, and the cutsize of thebisection is small. Our motivation comes from the vulnerability analysisof distribution systems such as the electric power system. We show thatthe constrained version of the problem, where we place either the cutsizeor the mismatch significance as a constraint and optimize the other, isNP-complete, and provide an integer programming formulation. We alsopropose an alternative relaxed formulation, which can trade-off betweenthe two objectives and show that the alternative formulation of theproblem can be solved in polynomial time by a maximum flow solver. Ourexperiments with benchmark electric power systems validate theeffectiveness of our methods.
Modeling applied to problem solving
Pawl, Andrew
We describe a modeling approach to help students learn expert problem solving. Models are used to present and hierarchically organize the syllabus content and apply it to problem solving, but students do not develop and ...
The optimization problem Genetic Algorithm
Giménez, Domingo
The optimization problem Genetic Algorithm Particle Swarm Optimization Experimental results for time-power optimization META, October 27-31, 2014 1 / 25 #12;The optimization problem Genetic Algorithm Particle Swarm Optimization Experimental results Conclusions Time and energy optimization Traditionally
Probabilistic Robotics The SLAM Problem
Kosecka, Jana
rule · History of SLAM dates back to the mid-eighties (stone-age of mobile robotics) The SLAM Problem
Algorithms and Problem Solving Introduction
Razak, Saquib
Unit 16 1 Algorithms and Problem Solving · Introduction · What is an Algorithm? · Algorithm Properties · Example · Exercises #12;Unit 16 2 What is an Algorithm? What is an Algorithm? · An algorithm. · The algorithm must be general, that is, it should solve the problem for all possible input sets to the problem
Minoru Fujimoto; Kunihiko Uehara
2008-09-05
We study the quadratic residue problem known as an NP complete problem by way of the prime number and show that a nondeterministic polynomial process does not belong to the class P because of a random distribution of solutions for the quadratic residue problem.
1980-03-01
The first portion of the Conceptual Design Study of Stirling Engines for Stationary Power Application in the 500 to 3000 hp range which was aimed at state-of-the-art stationary Stirling engines for a 1985 hardware demonstration is summarized. The main goals of this effort were to obtain reliable cost data for a stationary Stirling engine capable of meeting future needs for total energy/cogeneration sysems and to establish a pragmatic and conservative base design for a first generation hardware. Starting with an extensive screening effort, 4 engine types, i.e., V-type crank engine, radial engine, swashplate engine, and rhombic drive engine, and 3 heat transport systems, i.e., heat pipe, pressurized gas heat transport loop, and direct gas fired system, were selected. After a preliminary layout cycle, the rhombic drive engine was eliminated due to intolerable maintenance difficulties on the push rod seals. V, radial and swashplate engines were taken through a detailed design/layout cycle, to establish all important design features and reliable engine weights. After comparing engine layouts and analyzing qualitative and quantitative evaluation criteria, the V-crank engine was chosen as the candidate for a 1985 hardware demonstration.
test problem for packing_sumit
chenwang
2006-07-21
Test problems of circles in circle packing with constraints and known ... test problems for circles packing problem with the optimal solutions known. That is ...
MATRIXDEPENDENT MULTIGRIDHOMOGENIZATION FOR DIFFUSION PROBLEMS
Bebendorf, Mario
, such as matrix dependent prolongations and the construction of coarsegrid operators by means of the Galerkin. Introduction. Solutions for problems which model locally strong varying phe nomena on a microscale level require that all length scales present in the problem are completely resolved. However, due to storage
TECHNOLOGY TRANSFER: PROBLEMS AND PROSPECTS
TECHNOLOGY TRANSFER: PROBLEMS AND PROSPECTS Jesse w. Fussell Department of Defense 9800 Savage Road of technology transfer in this technical area in the past, to forecast prospects for technology transfer in the future, and to suggest some ideas for stimulating the process. 2. TECHNOLOGY TRANSFER PROBLEMS Many
HP 35s scientific calculator user's guide
Vetter, Frederick J.
"AS IS" AND ARE SUBJECT TO CHANGE WITHOUT NOTICE. HEWLETT-PACKARD COMPANY MAKES NO WARRANTY OF ANY and ALG Modes.......................................................... 1-9 Undo key................................... 1-19 Controlling the Display Format ................................................ 1-21 Periods
Hewlett Packard Company HP | Open Energy Information
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 QA:QAsource History View NewTexas: Energy Resources Jump to:Hershey, Pennsylvania: Energy
Title (46 pt. HP Simplified bold)
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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With U.S.Week DayDr.Theories81 to 1990 Timeline2 Hewlett-Packard
Mathematical Problems of Thermoacoustic Tomography
Nguyen, Linh V.
2010-10-12
Thermoacoustic tomography (TAT) is a newly emerging modality in biomedical imaging. It combines the good contrast of electromagnetic and good resolution of ultrasound imaging. The mathematical model of TAT is the observability problem for the wave...
Quantum Computing: Solving Complex Problems
DiVincenzo, David [IBM Watson Research Center
2009-09-01
One of the motivating ideas of quantum computation was that there could be a new kind of machine that would solve hard problems in quantum mechanics. There has been significant progress towards the experimental realization of these machines (which I will review), but there are still many questions about how such a machine could solve computational problems of interest in quantum physics. New categorizations of the complexity of computational problems have now been invented to describe quantum simulation. The bad news is that some of these problems are believed to be intractable even on a quantum computer, falling into a quantum analog of the NP class. The good news is that there are many other new classifications of tractability that may apply to several situations of physical interest.
Surrogate Guderley Test Problem Definition
Ramsey, Scott D. [Los Alamos National Laboratory; Shashkov, Mikhail J. [Los Alamos National Laboratory
2012-07-06
The surrogate Guderley problem (SGP) is a 'spherical shock tube' (or 'spherical driven implosion') designed to ease the notoriously subtle initialization of the true Guderley problem, while still maintaining a high degree of fidelity. In this problem (similar to the Guderley problem), an infinitely strong shock wave forms and converges in one-dimensional (1D) cylindrical or spherical symmetry through a polytropic gas with arbitrary adiabatic index {gamma}, uniform density {rho}{sub 0}, zero velocity, and negligible pre-shock pressure and specific internal energy (SIE). This shock proceeds to focus on the point or axis of symmetry at r = 0 (resulting in ostensibly infinite pressure, velocity, etc.) and reflect back out into the incoming perturbed gas.
Galois Groups of Schubert Problems
Martin Del Campo Sanchez, Abraham
2012-10-19
The Galois group of a Schubert problem is a subtle invariant that encodes intrinsic structure of its set of solutions. These geometric invariants are difficult to determine in general. However, based on a special position argument due to Schubert...
SOME COMPUTATIONAL PROBLEMS IN MICROFLUIDICS.
Colin, Thierry
SOME COMPUTATIONAL PROBLEMS IN MICROFLUIDICS. S. Tancogne, Ch.-H. Bruneau, Th. Colin Institut de is to present some results of flow simulations in microflu- idics. Microfluidics is characterized
Lipschitzian Solutions of Perturbed Nonlinear Programming Problems
Cornet, Bernard; Vial, Jean-Phillippe
1986-01-01
. 10 0. R ed ist rib ut io n su bje ct to SIA M lic en se or co py rig ht; se e h ttp ://w ww .si am .or g/j ou rna ls/ ojs a.p hp 1126 B. CORNET AND J.-PH. VIAL Assumption A.1. The gradients Vgi(x, a), 1, , m, are linearly independent, then we...’. For all hRn, h0, such that (Vf(x,a),h)=O and (Vgi(x, a), h) 0, 1,. , ml, one has o 2 a) h,h )>0.D:f(x, a) + E AiD g,(x, It is an immediate consequence of a lemma of Debreu (1952) that (A.3’) implies (A.3). Thus the two assumptions are equivalent. We can...
According to the elementary laws of electricity, we know that. The voltage drop across the resistor is IR. The voltage drop across the capacitor is Q/ C.
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
were created by combining evaporation-induced self- assembly of nanopores with atomic layer deposition (ALD), allowing specific tuning of both pore size and surface chemistry. By...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
process takes place at room temperature using ambient conditions, yet produces a coating competitive with current technologies. Innovative Edge Sandia's method for applying...
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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgramExemptions | National NuclearProbingProbing metal solidificationTech
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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgramExemptions | National NuclearProbingProbing metal
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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) by Carbon-Rich Matrices inPrincipalFirm Exchange . . .Probing
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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) by Carbon-Rich Matrices inPrincipalFirm Exchange . . .ProbingTech
Solving the Tulsa ozone problem
Wagner, K.K. [Atmospheric Information Systems, Norman, OK (United States); Wilson, J.D. [Wilson Consulting Group, Tulsa, OK (United States); Gibeau, E. [Aeromet Inc., Tulsa, OK (United States)
1998-12-31
Local governments and interested parties in Tulsa, Oklahoma are planning actions to keep Tulsa in compliance with the ozone ambient air quality standard. Based on recent data Tulsa exceeds the new eight hour average national ambient air quality standard for ozone and occasionally exceeds the previous one hour standard. Currently, Tulsa is in attainment of the former one-hour ozone standard. The first planning step is to integrate the existing information about Tulsa`s ozone problem. Prior studies of Tulsa ozone are reviewed. Tulsa`s recent air quality and meteorological monitoring are evaluated. Emission inventory estimates are assessed. Factors identified with Tulsa`s ozone problem are the transport of ozone and precursor gases, a possible role for biogenic emissions, and a simplistic ozone forecasting method. The integration of information found that current air quality and meteorological monitoring is meager. Observations of volatile organic compounds and NO{sub y} are absent. Prior intensive studies in 1977 and 1985 are more than ten years old and lack relevance to today`s problem. Emission inventory estimates are scarce and uncertain. The current knowledge base was judged inadequate to properly characterize the present ozone problem. Actions are recommended to enlarge the information base to address Tulsa`s ozone problem.
Quantum algorithms for algebraic problems
Andrew M. Childs; Wim van Dam
2008-12-02
Quantum computers can execute algorithms that dramatically outperform classical computation. As the best-known example, Shor discovered an efficient quantum algorithm for factoring integers, whereas factoring appears to be difficult for classical computers. Understanding what other computational problems can be solved significantly faster using quantum algorithms is one of the major challenges in the theory of quantum computation, and such algorithms motivate the formidable task of building a large-scale quantum computer. This article reviews the current state of quantum algorithms, focusing on algorithms with superpolynomial speedup over classical computation, and in particular, on problems with an algebraic flavor.
Noise, sign problems, and statistics
Michael G. Endres; David B. Kaplan; Jong-Wan Lee; Amy N. Nicholson
2011-06-01
We show how sign problems in simulations of many-body systems can manifest themselves in the form of heavy-tailed correlator distributions, similar to what is seen in electron propagation through disordered media. We propose an alternative statistical approach for extracting ground state energies in such systems, illustrating the method with a toy model and with lattice data for unitary fermions.
Problems in unification and supergravity
Farrar, G.; Henyey, F. (eds.)
1984-01-01
Problems in unification of the various gauge groups, quantum gravity, supersymmetry and supergravity, compact dimensions of space-time, and conditions at the beginning of the universe are discussed. Separate entries were prepared for the data base for the 15 papers presented. (WHK)
MATRIXDEPENDENT MULTIGRIDHOMOGENIZATION FOR DIFFUSION PROBLEMS
dependent prolongations and the construction of coarse grid operators by means of the Galerkin approximation. In numerical on a microscale level, require that all length scales appearing in the problem are completely resolved. In numerical simulation however, due to reasons of storage requirements and numerical complexity
Resurgent functions and splitting problems
Sauzin, David
2006-01-01
The present text is an introduction to \\'Ecalle's theory of resurgent functions and alien calculus, in connection with problems of exponentially small separatrix splitting. An outline of the resurgent treatment of Abel's equation for resonant dynamics in one complex variable is included. The emphasis is on examples of nonlinear difference equations, as a simple and natural way of introducing the concepts.
Some Ramsey Problems Involving Triangles -
Radziszowski, Stanislaw P.
Some Ramsey Problems Involving Triangles - Computational Approach Stanislaw Pawel Radziszowski Department of Computer Science Rochester Institute of Technology, NY ramsey@dimacs, 28 may 2009 1/40 #12;Outline - Triangles Everywhere or avoiding K3 in some/most colors 1 Ramsey Numbers - Two Colors Some known
Software Quality Assurance Problem frames
Wallace, Charles
report-world a c a b a: RW!{WorldInfo} b: IR!{Queries}, IS!{Reports} c: IR!{DisplayState} "When world sends report... causing appropriate change in display state." #12;Information problem real world: may world interpreted by sensor or "data-entry" person real world a: S!{SensorData} b: RW!{WorldData} b
Substation automation problems and possibilities
Smith, H.L.
1996-10-01
The evolutionary growth in the use and application of microprocessors in substations has brought the industry to the point of considering integrated substation protection, control, and monitoring systems. An integrated system holds the promise of greatly reducing the design, documentation, and implementation cost for the substation control, protection, and monitoring systems. This article examines the technical development path and the present implementation problems.
Modeling Photon Generation Problem Presenter
Edwards, David A.
on Mathematical Problems in Industry June 1317, 2011 New Jersey Institute of Technology #12;Section 1 generation in quantum experiments, involve one or more pump fields at relatively large amplitude interacting linear form of the CMEs in the undepleted-pump regime, where the CMEs can formally be solved to yield
Grasers: proposals, problems, and prospects
Baldwin, G.C.
1982-01-01
The possibility and potentiality of amplification of recoilless radiation emitted by nuclear isomers has long been recognized; nevertheless, development of gamma-ray lasers continues to await resolution of the pumping vs. linebreadth dilemma. Problems that accompany proposals for reducing the excitation requirements and suggest areas of investigation that may contribute to resolving the dilemma are identified; several involve use of optical lasers.
Seismic Vessel Problem Gregory Gutin
Gutin, Gregory
Seismic Vessel Problem Gregory Gutin , Helmut Jakubowicz , Shuki Ronen and Alexei Zverovitch§ November 14, 2003 Abstract We introduce and study a new combinatorial optimization prob- lem, the Seismic computational experience with solving SVP instances drawn from industrial practice (geophysical seismic acquisi
Al Hanbali, Ahmad
Problem Motivation Problem setup Solution Special case Conclusions Computation of Chopped System Norm Hanumant Singh Shekhawat University of Twente March 11, 2010 #12;Problem Motivation Problem setup Solution Special case Conclusions Overview 1 Problem 2 Motivation 3 Problem setup 4 Solution 5 Special case
1 Problem Solving: How do you do it? Classic example is the Tower of Hanoi problem
O'Reilly, Randall C.
1 Problem Solving: How do you do it? Classic example is the Tower of Hanoi problem: Initial State state. 3 Problem Solving Heuristics Brute force search: explore entire problem space. Hill climbing away from the goal for a bit, it will eventually solve the problem. This is a problem for people too
Cinema, Fermi Problems, & General Education
Efthimiou, C J
2006-01-01
During the past several years the authors have developed a new approach to the teaching of Physical Science, a general education course typically found in the curricula of nearly every college and university. This approach, called `Physics in Films', uses scenes from popular movies to illustrate physical principles and has excited student interest and improved student performance. The analyses of many of the scenes in `Physics in Films' are a direct application of Fermi calculations -- estimates and approximations designed to make solutions of complex and seemingly intractable problems understandable to the student non-specialist. The intent of this paper is to provide instructors with examples they can use to develop skill in recognizing Fermi problems and making Fermi calculations in their own courses.
The Spinless Relativistic Yukawa Problem
Wolfgang Lucha; Franz F. Schöberl
2014-10-20
Noticing renewed or increasing interest in the possibility to describe semirelativistic bound states (of either spin-zero constituents or, upon confining oneself to spin-averaged features, constituents with nonzero spin) by means of the spinless Salpeter equation generalizing the Schr\\"odinger equation towards incorporation of effects caused by relativistic kinematics, we revisit this problem for interactions between bound-state constituents of Yukawa shape, by recalling and applying several well-known tools enabling to constrain the resulting spectra.
Unsolved problems in particle physics
Sergey Troitsky
2011-12-19
I consider selected (most important according to my own choice) unsolved problems in particle theory, both those related to extensions of the Standard Model (neutrino oscillations, which probably do not fit the usual three-generation scheme; indications in favour of new physics from astrophysical observations; electroweak symmetry breaking and hierarchy of parameters) and those which appear in the Standard Model (description of strong interactions at low and intermediate energies).
Recognizing and Handling Calving Problems.
Beverly, John R.
1979-01-01
bedded and sanitized thoroughly between calv ings. Following delivery, move calves directly to clean pasture areas. If calves are allowed to stay in or near the delivery area, scour problems may de velop. Also, move cows to clean pastures after... extractions of the calf. Chains are available in 10-, 21 -, 30? and GO-inch lengths. Obstetrical chains are preferred for applying traction because they are cleaned and sanitized more easily. Disinfect chains between uses by boiling in mineral oil...
Recognizing and Handling Calving Problems
Beverly, John R.
2003-05-28
problem calf. Use a maternity stall when available. This is an enclosed area approximately 4 x 8 feet, preferably with side and rear exits. It should be well bedded and sanitized thoroughly between calvings. Following delivery, move calves directly... be used; they may be attached to the chains in forced extractions (Fig. 2). Obstetrical chains are preferred for applying traction because they are cleaned and sanitized more easily. Disinfect chains between uses by boiling in mineral oil. This prevents...
Beamer graphics problem solved Abhijit Champanerkar
Champanerkar, Abhijit
Beamer graphics problem solved Abhijit Champanerkar College of Staten Island, CUNY January 15, 2009 Abhijit Champanerkar (CSI, CUNY) Beamer graphics problem solved #12;I wanted to get the following and not on a Mac :( Abhijit Champanerkar (CSI, CUNY) Beamer graphics problem solved #12;Graphics Problem: Figure
Solving Stochastic Inverse Problems: A Sparse Grid
Zabaras, Nicholas J.
Solving Stochastic Inverse Problems: A Sparse Grid Collocation Approach N. Zabaras Cornell to large scale problems. To solve large-scale problems involving high-dimensional stochastic spaces (in Methods for Large-Scale Inverse Problems and Quantification of Uncertainity. Edited by People on Earth c
Climate-Change Problem Solving: Structured Approaches
Wright, Dawn Jeannine
Climate-Change Problem Solving: Structured Approaches Based on Real-World Experiences Richard B of knowledge system · Structured problem solving · How to express problem solving in information technology problem solving · Key to development of successful strategies: iterative process or co- development
Capacitated Node Routing Problems (Preliminary Progress Report)
Ralphs, Ted
and telecommunications networks under capacity constraints. The CTP [104] models the problem of digging trenches of these problems. Because of the intense effort devoted to solving the well-studied Traveling Salesman Problem (TSP The CNRP is a variant of the well-known fixed-charge network flow problem (FCNFP), in which we have only
World-line approach to Sign Problems
Aarts, Gert
World-line approach to Sign Problems Shailesh Chandrasekharan Duke University #12;Outline XY model + chemical potential world-line approach solving the silver blaze problem! Two component bosons + Abelian world-line approach solving the silver blaze problem! more flavors + solving sign problems
Goodwill problems in Federal taxation
Kirk, Robert Adam
1951-01-01
0009WZLL PROBLEMS I? FRDKRA L TAXATXQW Robert k. KXHr kyproveC as to style aa4 oonteat by GQOQIXLL PBMLENS XN f EQENLJ VAXATXOR 9, &2984 QGODNXLL PROSLKWB Xll FEDERAL TAXATXOH Submitteh to the graduate Sohool of the kgx'ioultuml an4..., or amortisation of goodwill. Xn the past, goodwill ?as valued at a oonservat1ve amount on the books in many oases, yet in others it wae so exoessivs that 1t oommanded little respeot as a legitimate asset. Even today an examination of the goodwill aooount...
Solving the Dark Matter Problem
Baltz, Ted
2009-09-01
Cosmological observations have firmly established that the majority of matter in the universe is of an unknown type, called 'dark matter'. A compelling hypothesis is that the dark matter consists of weakly interacting massive particles (WIMPs) in the mass range around 100 GeV. If the WIMP hypothesis is correct, such particles could be created and studied at accelerators. Furthermore they could be directly detected as the primary component of our galaxy. Solving the dark matter problem requires that the connection be made between the two. We describe some theoretical and experimental avenues that might lead to this connection.
String Theory: Progress and Problems
John H. Schwarz
2007-03-05
String theory builds on the great legacy of Yukawa and Tomonaga: New degrees of freedom and control of the UV are two important themes. This talk will give an overview of some of the progress and some of the unsolved problems that characterize string theory today. It is divided into two parts: (1) Connecting String Theory to the Real World; (2) Gauge Theory/String Theory Duality. Two other major subjects, which I will omit, are Black Holes in String Theory and The Impact of String Theory on Mathematics.
Quantum geometrodynamics creates new problems
T. P. Shestakova
2008-10-22
The development of last years in quantum geometrodynamics highlights new problems which were not obvious in its first formulation proposed by Wheeler and DeWitt. At the first stage the main task was to apply known quantization schemes to gravitational field or a certain cosmological model. This way has led to the realization of the fact that a quantum description of the Universe is impossible without implicit or explicit indication to a reference frame presented by some medium, filling the whole Universe, with its own equation of state and thermodynamical properties. Thus the questions arise, should one seek for a "privileged" reference frame or consider all the variety of gauge conditions and appropriate solutions for the wave function? It is worth noting that thermodynamical properties of such a quantum Universe would also depend on a chosen reference frame to some extent. So, we need a self-consistent quantum theoretical and thermodynamical description of the Universe.
Kouzes, Richard T.
2009-05-01
One of the main uses for 3He is in gas proportional counters for neutron detection. Radiation portal monitors deployed for homeland security and non-proliferation use such detectors. Other uses of 3He are for research detectors, commercial instruments, well logging detectors, dilution refrigerators, for targets or cooling in nuclear research, and for basic research in condensed matter physics. The US supply of 3He comes almost entirely from the decay of tritium used in nuclear weapons by the US and Russia. A few other countries contribute a small amount to the world’s 3He supply. Due to the large increase in use of 3He for homeland security, the supply has dwindled, and can no longer meet the demand. This white paper reviews the problems of supply, utilization, and alternatives.
A FREE BOUNDARY PROBLEM ARISING FROM SEGREGATION ...
2013-06-18
In this work, we show how to obtain a free boundary problem as the limit of a fully non linear elliptic .... b) to find the solution for a optimal partition problem.
The recoverable robust tail assignment problem
2012-12-17
the benefits of simultaneously solving planning and recovery problems in the RRTAP ...... In future work, we aim to extend the recoverable robustness technique for airline problems. .... North-Holland Publishing Company, Amsterdam, 1981.
Computational evaluation of two reactor benchmark problems
Cowan, James Anthony
1998-01-01
A neutronic evaluation of two reactor benchmark problems was performed. The benchmark problems describe typical PWR uranium and plutonium (mixed oxide) fueled lattices. WIMSd4m, a neutron transport lattice code, was used to evaluate multigroup...
INVERSE SCATTERING PROBLEMS WITH MULTI-FREQUENCIES ...
2015-01-25
variational problem is studied for the direct scattering; an energy estimate is given to ... with some general remarks and directions for future research in section 4. ... alternative theorem, the direct problem can be shown to have a unique weak ...
Economic Analyses of Three Energy Policy Problems
Accordino, Megan H.
2015-01-01
raw list of bids and offers, I transformed the data for eachof missing data problem, where there are bids and offers andthe best bid and offer do not have a missing data problem,
Sobek II, Durward K.
Effective Metaroutines for Organizational Problem Solving 1 EFFECTIVE METAROUTINES FOR ORGANIZATIONAL PROBLEM SOLVING MANIMAY GHOSH and DURWARD K. SOBEK II* Mechanical and Industrial Engineering@ie.montana.edu * Corresponding Author #12;Effective Metaroutines for Organizational Problem Solving 2 Abstract Short
Lundberg et. al) Communication Problems in Crisis Response Communication Problems in Crisis Response
Lundberg et. al) Communication Problems in Crisis Response Communication Problems in Crisis Universitet mikael.asplund@liu.se ABSTRACT This paper describes five problem areas of communication that occur during crisis response. These areas are communication infrastructure, situation awareness, individual
Algorithms for Multiple Vehicle Routing Problems
Bae, Jung Yun
2014-06-02
require a collection of heterogeneous vehicles to visit a set of targets. This dissertation considers three fundamental rout- ing problems involving multiple vehicles that arise in these applications. The main objective of this dissertation is to develop... . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1.2 Approximation algorithm for MDMTHPP . . . . . . . . . . . 8 2.1.3 Optimal constrained forest as a two matroid intersection problem 11 2.2 Single depot multiple terminal Hamiltonian path problems . . . . . . 14 2.2.1 Problem statement...
The Lebanese electric power system operational problems
Yehia, M.; Saidi, M.; Diab, H.; Kabalan, K. (American Univ., Beirut (Lebanon))
1991-09-01
This article deals with the analysis of the existing practical problems in the Lebanese electric power system and provides guidelines for future research and strategies for solving the operational problems which are now facing the system. These problems are partly due, first, to the socioeconomic situation in Lebanon after 14 years of a devastating war and second, to the particularity of the Lebanese system.
Evaluating Research in Cooperative Distributed Problem Solving
Massachusetts at Amherst, University of
Evaluating Research in Cooperative Distributed Problem Solving Keith S. Decker Edmund H. Durfee Research under Contract NR049041. 0 #12; Cooperative Distributed Problem Solving (CDPS) is a new field Cooperative Distributed Problem Solving (CDPS) is a new field that has not yet established critical research
Evaluating Research in Cooperative Distributed Problem Solving
Massachusetts at Amherst, University of
Evaluating Research in Cooperative Distributed Problem Solving Keith S. Decker Edmund H. Durfee Research under Contract NR049-041. 0 #12;Cooperative Distributed Problem Solving (CDPS) is a new field Distributed Problem Solving (CDPS) is a new field that has not yet established critical research mass, so
Solving Generalized Small Inverse Problems Noboru Kunihiro
International Association for Cryptologic Research (IACR)
Solving Generalized Small Inverse Problems Noboru Kunihiro The University of Tokyo, Japan kunihiro@k.u-tokyo.ac.jp Abstract. We introduce a "generalized small inverse problem (GSIP)" and present an algorithm for solving such that the target problem can be solved in polynomial time in log M in an explicit form. Since GSIPs in- clude some
Optimistic Problem Solving Susan L. Epstein
Epstein, Susan L.
Optimistic Problem Solving Susan L. Epstein Computer Science Department, Hunter College.epstein@hunter.cuny.edu Abstract People are optimistic about problem solving. This paper identifies hallmarks of optimistic human problem solving and how people control for the errors it often engenders. It describes an architecture
The Polymatroid Steiner Problems G. Calinescu1
Zelikovsky, Alexander
sensors capable of monitoring all targets and t is time during which T is used. A simple energy model. #12;2 G. Calinescu and A. Zelikovsky Target-monitoring sensor network lifetime problem. Find problem which is dual to the target-monitoring sensor network lifetime problem. Target-monitoring sensor
ARTIFICIAL INTELLIGENCE PLANNING PROBLEMS PETRI NET FRAMEWORK
Antsaklis, Panos
ARTIFICIAL INTELLIGENCE PLANNING PROBLEMS IN A PETRI NET FRAMEWORK K.M Passino and PJ. Antsaluis defined and then used to model a class of Artificial Intelligence planning problems. A planning stegy. As an iJlustration of the results three Artificial Intelligence planning problems are modelled and soved
The Univariate Problem The Multivariate Case
Basu, Saugata
Background The Univariate Problem The Multivariate Case Recent Developments and on-going work;Background The Univariate Problem The Multivariate Case Recent Developments and on-going work Outline 1 Background 2 The Univariate Problem 3 The Multivariate Case 4 Recent Developments and on-going work Saugata
MFR PAPER 1327 Status and Problems of
MFR PAPER 1327 Status and Problems of the American Shrimp Industry ROGER W. HUTCHINSON ABSTRACT-The shrimp industry of the United States enjoyed 2 successful years in 1976 and 1977 and expectations industry plus a brief description of various problems facing it. INTRODUCTION The status and problems
Reisslein, Martin
Teaching With Concrete and Abstract Visual Representations: Effects on Students' Problem Solving/or abstract visual problem representa- tions during instruction on students' problem-solving practice, near outperformed Groups A and C on problem-solving practice in Experiments 1 and 2 and outperformed Group C
Minnesota, University of
THE DEVELOPMENT OF STUDENTS' PROBLEM-SOLVING SKILL FROM INSTRUCTION EMPHASIZING QUALITATIVE PROBLEM-SOLVING the skills to solve problems using this knowledge. In the physics department at the University of Minnesota an instructor explicitly teaching a problem-solving strategy that emphasizes the qualitative analysis
Cruz, Frederico
Networks, Buffer Allocation Problem typeset May 18, 2004 Smith & Cruz The Buffer Allocation Problem-mail: fcruz@ufmg.br May 18, 2004 Abstract -- The Buffer Allocation Problem (BAP) is a difficult stochastic, integer, nonlinear program- ming problem. In general, the objective function and constraints
Cosmological Constant Problems and Renormalization Group
Ilya L. Shapiro; Joan Sola
2007-01-05
The Cosmological Constant Problem emerges when Quantum Field Theory is applied to the gravitational theory, due to the enormous magnitude of the induced energy of the vacuum. The unique known solution of this problem involves an extremely precise fine-tuning of the vacuum counterpart. We review a few of the existing approaches to this problem based on the account of the quantum (loop) effects and pay special attention to the ones involving the renormalization group.
Complexity Classification of Local Hamiltonian Problems
Cubitt, Toby; Montanaro, Ashley
2015-06-02
constraint satisfaction problems. Index Terms—Hamiltonian complexity; QMA-completeness. I. INTRODUCTION Constraint satisfaction problems (CSPs) are ubiquitous in computer science and have been intensively studied since the early days of complexity theory. A... Complexity classification of local Hamiltonian problems Toby Cubitt Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, UK. tsc25@cam.ac.uk Ashley Montanaro Department of Computer Science, University...
Informal Parking: Turning Problems into Solutions
Shoup, Donald
2015-01-01
Shoup. 2014. “Informal Parking Markets: Turning ProblemsShoup. 2014. “Informal Parking on Sidewalks: The BrokenYears’ War over free curb parking, and the revenue will
Fast methods for inverse wave scattering problems
Lee, Jung Hoon, Ph. D. Massachusetts Institute of Technology
2008-01-01
Inverse wave scattering problems arise in many applications including computerized/diffraction tomography, seismology, diffraction/holographic grating design, object identification from radar singals, and semiconductor ...
The Consent Problem in International Law
Guzman, Andrew
2011-01-01
problem of nuclear proliferation. The Nuclear change to nuclear proliferation to terrorism to member of the Nuclear Non-?Proliferation Treaty in
Engineering report standard hydrogen monitoring system problems
Golberg, R.L.
1996-09-25
Engineering Report to document moisture problems found during the sampling of the vapors in the dome space for hydrogen in the storage tanks and a recommended solution.
Test problems for quasi-satellite packing????
Administrator
2008-10-14
background of the layout optimization problem of a simplified international .... system is used to calculate the moment of inertia of the object in relation to its.
Optimal timing problems in environmental economics
Pindyck, Robert S.
2001-01-01
Because of the uncertainties and irreversibilities that are often inherent in environmental degradation, its prevention, and its economic consequences, environmental policy design can involve important problems of timing. ...
Problems of intraplate extensional tectonics, Western United...
the Great Basin Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: Problems of intraplate extensional tectonics, Western United States,...
Optimization Problems in Natural Gas Transportation Systems
Roger Z. Rios-Mercado
2015-03-02
Mar 2, 2015 ... Abstract: This paper provides a review on the most relevant research works conducted to solve natural gas transportation problems via pipeline ...
A computational inverse diffraction grating problem
2012-02-29
Mar 2, 2012 ... tromagnetic diffraction through periodic structures, along with some ... problems in diffractive optics, which is to design a grating structure that ...
INVERSE PROBLEMS IN HEAT TRANSFER Nicholas Zabaras
Zabaras, Nicholas J.
physics that are defined by one or more coupled integral, partial, or ordinary differential equations (re . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 17.2.3Adjoint problem and gradient calculations . . . . . . . . . . . . . . . . 15 17
Problem Set #2 Due September 18
Ralphs, Ted
that if the weights are bounded by a constant u, then the problem can be solved in polynomial time. Give pseudo-code
A physical approach to Tsirelson's problem
Miguel Navascues; Tom Cooney; David Perez-Garcia; Ignacio Villanueva
2011-05-17
Tsirelson's problem deals with how to model separate measurements in quantum mechanics. In addition to its theoretical importance, the resolution of Tsirelson's problem could have great consequences for device independent quantum key distribution and certified randomness. Unfortunately, understanding present literature on the subject requires a heavy mathematical background. In this paper, we introduce quansality, a new theoretical concept that allows to reinterpret Tsirelson's problem from a foundational point of view. Using quansality as a guide, we recover all known results on Tsirelson's problem in a clear and intuitive way.
Optimization Problems in Natural Gas Transportation Systems
Mar 2, 2015 ... Optimization Problems in Natural Gas Transportation Systems: A State-of-the-Art Review. Roger Z. Rios-Mercado (roger.rios ***at*** ...
Robust constrained shortest path problems under budgeted ...
2014-09-12
The shortest path problem with capacity constraint is denoted by CSP. Differently from the capacity constraint, time windows must be satisfied at each node ...
How Do You Stay Warm While Saving Money and Energy in Extreme...
3, 2011 - 6:30am Addthis Many states are getting extreme weather this week, with deep freezes, huge blizzards, and ice storms causing various problems across the country....
New Hampshire, University of
, such as black plastic, straw, grass clippings (free of herbicides), or newspapers. Mulches can help moderate soil temperature and moisture, reduce pest problems, and keep the fruit clean. Black plastic mulch can as well as other problems. Improve soil moisture Maintain even soil moisture levels by applying a mulch
Reversals of fortune: path dependency, problem solving, and temporal cases
Haydu, Jeffrey
2010-01-01
and as sequences of problem solving. American Journal ofpath dependency, problem solving, and temporal cases Jeffreyalternative: sequences of problem solving Putting actors at
Young children selectively seek and offer help when solving problems
Cluver, Annette Lynne
2010-01-01
seeking: an understudied problem-solving skill in children.on children’s problem solving. Developmental Psychology,25(speech in dyadic problem solving. Evidence for a preschool
Solving Customer-Driven Microgrid Optimization Problems as DCOPs
Yeoh, William
Solving Customer-Driven Microgrid Optimization Problems as DCOPs Saurabh Gupta , Palak Jain common customer-driven microgrid (CDMG) optimization problems a comprehensive CDMG optimization problem
Young children selectively seek and offer help when solving problems
Cluver, Annette Lynne
2010-01-01
Selectively Seek and Offer Help When Solving Problems Achildren selectively seek and offer help on problem-solvingselectively seek and offer help when solving problems in the
RELAXATION METHODS FOR GENERALIZED NASH EQUILIBRIUM PROBLEMS
Kanzow, Christian
RELAXATION METHODS FOR GENERALIZED NASH EQUILIBRIUM PROBLEMS WITH INEXACT LINE SEARCH Anna von@mathematik.uni-wuerzburg.de February 21, 2008 #12;Abstract. The generalized Nash equilibrium problem (GNEP) is an extension of the stan- dard Nash game where both the utility functions and the strategy spaces of each player also depend
The multi-stop aircraft routing problem
Garci?a Castan?eda, Salvador
1995-01-01
which facilitate solution. Since the constraint set of the multi-stop aircraft routing problem includes 0/1 mixed rows, we first derive valid inequalities for this type of regions. Then we apply these results to the constraint set of the routing problem...
The Polymatroid Steiner Problems G. Calinescu1
Calinescu, Gruia
sensors capable of monitoring all targets and t is time during which T is used. A simple energy model. A preliminary version of this paper appeared in ISAAC 2004 #12;2 G. Calinescu and A. Zelikovsky Target-monitoring is on the following problem which solves the feasibility problem of the dual to the target-monitoring sensor network
Databases of problems using LATEX Mark Hickman
Hickman, Mark
of Canterbury mark.hickman@canterbury.ac.nz Version 1.3 1 OVERVIEW This document describes the package problems. This package allows the management of a database of problems (with optional solutions) within LATEX equation is given by $$ \\pder[2]{u}{t^2} = c^2 \\, \\pder[2]{u}{x^2} \\label{wave} $$ where $c
Some Ramsey Problems Involving Triangles -Computational Approach
Radziszowski, Stanislaw P.
Some Ramsey Problems Involving Triangles - Computational Approach Stanislaw P. Radziszowski at the Ramsey Theory Workshop DIMACS, Rutgers University, May 28, 2009 Definition 1. For graphs G and H, R(G, H graphs, and the multicolor Ramsey numbers R(G1, Â· Â· Â· , Gr). Computational problems for Ramsey numbers
Decomposition method for the Multiperiod Blending Problem
Grossmann, Ignacio E.
Decomposition method for the Multiperiod Blending Problem Francisco Trespalacios, Irene Lotero Engineering Carnegie Mellon University Pittsburgh, PA 15213 #12;2 Motivation and goals Multiperiod blending problem is a general model for many applications, and it is difficult to solve · Gasoline and crude oil
Decomposition method for the Multiperiod Blending Problem
Grossmann, Ignacio E.
for many applications 4 · Gasoline and crude oil blending · Raw material feed scheduling · StorageDecomposition method for the Multiperiod Blending Problem Irene Lotero, Francisco Trespalacios algorithm #12;Supply Tanks (s) Blending Tanks (b) Demand Tanks (d) Multiperiod blending problem is defined
JULIA ROBINSON And Hilbert's Tenth Problem
German, Dan-Adrian
1 JULIA ROBINSON And Hilbert's Tenth Problem A documentary film by George Paul Csicsery Julia Robinson (1919-1985) A one-hour biographical documentary, Julia Robinson and Hilbert's Tenth Problem tells friendship between Russian and American colleagues at the height of the cold war. In this film, Robinson
Fluid Neutral Momentum Transport Reference Problem
Budny, Robert
Fluid Neutral Momentum Transport Reference Problem D. P. Stotler, PPPL S. I. Krasheninnikov, UCSD 1 Summary Type of problem: kinetic or fluid neutral transport Physics or algorithm stressed: thermal force term (spatial resolution) in momentum transport equation and treatment of collisions (charge ex- change
Approximate Solutions to Several Visibility Optimization Problems
Ferguson, Thomas S.
on the route. These problems are similar to the art gallery and watchman route problems, respectively. We propose a greedy iterative algorithm, formulated in the level set framework as the solution to the art that divides a domain () pop- ulated with occluders into visible and invisible regions as observed from
The volcanic ash problem Bernd Zimanowski a;
The volcanic ash problem Bernd Zimanowski a;Ã , Kenneth Wohletz b , Pierfrancesco Dellino c , Ralf are the result of intensive magma and rock fragmentation, and they produce volcanic ash, which consists of fragments 6 2 mm in average diameter. The problem with volcanic ash is that its formation is poorly
Modular Lazy Search for Constraint Satisfaction Problems
Tolmach, Andrew
graph coloring #12;3 CSP Algorithm Zoo · No agreedupon common framework. · Many problems benefit from on this function is a constraint check · Problem: type CSP = CSP{vars::Int,vals::Int,rel::Rel} #12;7 States is complete. complete :: CSP -> State -> Bool complete CSP{vars} as = (length as == vars) · A state
Williamson, Hannah C; Hanna, Mariam A; Lavner, Justin A; Bradbury, Thomas N; Karney, Benjamin R
2013-01-01
Behavior in Couples' Problem-Solving Conversations: DoBehavior in Couples' Problem-Solving Conversations: DoSanford, K. (2003). Problem-solving conversations in
Vietnam, March 2010 1 The districting problem:The districting problem
Ferland, Jacques A.
Vietnam, March 2010 1 The districting problem:The districting problem: applicationsTrois--RiviRivièèresres #12;Vietnam, March 2010 2 IntroductionIntroduction The districting problem consists in partitioning a considering different criteria or constraints.criteria or constraints. #12;Vietnam, March 2010 3 Main criteria
A close look at auxiliary problem principles for equilibria
2014-12-01
Dec 1, 2014 ... [7] Fukushima M. Equivalent differentiable optimization problems and descent methods for asymmetric variational inequality problems.
SIENA Customer Problem Statement and Requirements
L. Sauer; R. Clay; C. Adams; H. Walther; B. Allan; R. Mariano; C. Poore; B. Whiteside; B. Boughton; J. Dike; E. Hoffman; R. Hogan; C. LeGall
2000-08-01
This document describes the problem domain and functional requirements of the SIENA framework. The software requirements and system architecture of SIENA are specified in separate documents (called SIENA Software Requirement Specification and SIENA Software Architecture, respectively). While currently this version of the document describes the problems and captures the requirements within the Analysis domain (concentrating on finite element models), it is our intention to subsequent y expand this document to describe problems and capture requirements from the Design and Manufacturing domains. In addition, SIENA is designed to be extendible to support and integrate elements from the other domains (see SIENA Software Architecture document).
Mosquito Problems after a Storm (Spanish)
Johnsen, Mark
2008-08-05
Areas flooded after a severe storm are prone to mosquito problems. Several mosquito species are a danger to humans because of the diseases they transmit. This publication explains the symptoms of dengue fever, West Nile virus and St. Louis...
Domain Decomposition Methods for a Complementarity Problem
Cai, Xiao-Chuan
Domain Decomposition Methods for a Complementarity Problem Haijian Yang1 and Xiao-Chuan Cai2 1 under grants CCF-0634894 and CNS-0722023. 1 #12;2 Haijian Yang and Xiao-Chuan Cai with partial
An Issue to the Cosmological Constant Problem
R. Triay
2005-04-07
According to general relativity, the present analysis shows on geometrical grounds that the cosmological constant problem is an artifact due to the unfounded link of this fundamental constant to vacuum energy density of quantum fluctuations.
On Solving the Coronal Heating Problem
James A. Klimchuk
2006-03-09
This article assesses the current state of understanding of coronal heating, outlines the key elements of a comprehensive strategy for solving the problem, and warns of obstacles that must be overcome along the way.
A Survey on the Warehouse Location Problem
Cohen, Joseph J.
The warehouse location problem has assumed numerous formulations, and solutions have been devised using a variety of mathematical techniques. The development of this effort is examined and relevant models presented for evaluation.
Multiple Vehicle Routing Problem with Fuel Constraints
Levy, David
2013-06-26
of this problem is mainly in the improvement of feasible solutions, but the following steps are discussed: Cost Matrix Transformation, Field Partitioning, Tour Generation and Rerouting, and Tour Improvement. Four neighborhoods were investigated (2-opt, 3-opt...
Inverse transmission problems for magnetic Schrödinger operators
Katsiaryna Krupchyk
2011-12-16
This paper is concerned with the study of inverse transmission problems for magnetic Schr\\"odinger operators on bounded domains and in all of the Euclidean space, in the self-adjoint case. Assuming that the magnetic and electric potentials are known outside of a transparent obstacle, in the bounded domain case, we show that the obstacle, the transmission coefficients, as well as the magnetic field and electric potential inside the obstacle are uniquely determined from the knowledge of the set of the Cauchy data for the transmission problem, given on an open subset of the boundary of the domain. In the case of the transmission scattering problem, we obtain the same conclusion, when the scattering amplitude at a fixed frequency is known. The problems studied in this work were proposed in [15].
Does Friendship Present a Problem for Consequentialism?
Deng, Yan
2013-01-01
The problem I address in this paper concerns the compatibility between friendship and consequentialism. My goal is to prove that consequentialism is not compatible with end friendship because it cannot solve the alienation ...
Institutional Causes of California's Budget Problem
Cain, Bruce E.; Noll, Roger
2010-01-01
2, Issue 3 Institutional Causes of California’s BudgetCain and Noll: Institutional Causes of California’s BudgetPolicy Institutional Causes of California’s Budget Problem
A Survey of Network Design Problems
Wong, Richard T.
This report is a survey of the design of various types of networks that frequently occur in the study of transportation and communication problems. The report contains a general framework which facilitates comparisons ...
A Survey of Network Design Problems
Wong, Richard T.
Network design problems arise in many different application areas such as air freight, highway traffic, and communication systems. The intention of this survey is to present a coherent unified view of a number of papers ...
Creative problem solving at Rocky Reach
Bickford, B.M.; Garrison, D.H.
1997-04-01
Tainter gate inspection and thrust bearing cooling system problems at the 1287-MW Rocky Reach hydroelectric project on the Columbia River in Washington are described. Gate inspection was initiated in response to a failure of similar gates at Folsom Dam. The approach involved measuring the actual forces on the gates and comparing them to original model study parameters, rather than the traditional method of building a hydraulic model. Measurement and visual inspection was completed in one day and had no effect on migration flows. Two problems with the thrust bearing cooling system are described. First, whenever a generating unit was taken off line, cooling water continued circulating and lowered oil temperatures. The second problem involved silt buildup in flow measuring device tubes on the cooling water system. Modifications to correct cooling system problems and associated costs are outlined.
Combinatorial optimization problems with concave costs
Stratila, Dan
2009-01-01
In the first part, we study the problem of minimizing a separable concave function over a polyhedron. We assume the concave functions are nonnegative nondecreasing on R+, and the polyhedron is in RI' (these assumptions can ...
Adaptive complexity regularization for linear inverse problems
Loubes, Jean-Michel
2008-01-01
We tackle the problem of building adaptive estimation procedures for ill-posed inverse problems. For general regularization methods depending on tuning parameters, we construct a penalized method that selects the optimal smoothing sequence without prior knowledge of the regularity of the function to be estimated. We provide for such estimators oracle inequalities and optimal rates of convergence. This penalized approach is applied to Tikhonov regularization and to regularization by projection.
The Gribov problem in Noncommutative QED
Fabrizio Canfora; Maxim Kurkov; Luigi Rosa; Patrizia Vitale
2015-05-23
It is shown that in the noncommutative version of QED {(NCQED)} Gribov copies induced by the noncommutativity of space-time do appear in the Landau gauge. This is a genuine effect of noncommutative geometry which disappears when the noncommutative parameter vanishes. On the basis of existing applications of the Gribov-Zwanziger propagator in NCQED to deal with the UV/IR mixing problem, we argue that the two problems may have a common origin and possibly a common solution.
Geological problems in radioactive waste isolation
Witherspoon, P.A.
1991-01-01
The problem of isolating radioactive wastes from the biosphere presents specialists in the fields of earth sciences with some of the most complicated problems they have ever encountered. This is especially true for high level waste (HLW) which must be isolated in the underground and away from the biosphere for thousands of years. Essentially every country that is generating electricity in nuclear power plants is faced with the problem of isolating the radioactive wastes that are produced. The general consensus is that this can be accomplished by selecting an appropriate geologic setting and carefully designing the rock repository. Much new technology is being developed to solve the problems that have been raised and there is a continuing need to publish the results of new developments for the benefit of all concerned. The 28th International Geologic Congress that was held July 9--19, 1989 in Washington, DC provided an opportunity for earth scientists to gather for detailed discussions on these problems. Workshop W3B on the subject, Geological Problems in Radioactive Waste Isolation -- A World Wide Review'' was organized by Paul A Witherspoon and Ghislain de Marsily and convened July 15--16, 1989 Reports from 19 countries have been gathered for this publication. Individual papers have been cataloged separately.
Quantum problem solving as simultaneous computation
Giuseppe Castagnoli
2007-10-09
I provide an alternative way of seeing quantum computation. First, I describe an idealized classical problem solving machine that, thanks to a many body interaction, reversibly and nondeterministically produces the solution of the problem under the simultaneous influence of all the problem constraints. This requires a perfectly accurate, rigid, and reversible relation between the coordinates of the machine parts - the machine can be considered the many body generalization of another perfect machine, the bounching ball model of reversible computation. The mathematical description of the machine, as it is, is applicable to quantum problem solving, an extension of the quantum algorithms that comprises the physical representation of the problem-solution interdependence. The perfect relation between the coordinates of the machine parts is transferred to the populations of the reduced density operators of the parts of the computer register. The solution of the problem is reversibly and nondeterministically produced under the simultaneous influence of the state before measurement and the quantum principle. At the light of the present notion of simultaneous computation, the quantum speed up turns out to be "precognition" of the solution, namely the reduction of the initial ignorance of the solution due to backdating, to before running the algorithm, a time-symmetric part of the state vector reduction on the solution; as such, it is bounded by state vector reduction through an entropic inequality. PACS numbers: 03.67.Lx, 01.55.+b, 01.70.+w
Thick diffusion limit boundary layer test problems
Bailey, T. S.; Warsa, J. S.; Chang, J. H.; Adams, M. L.
2013-07-01
We develop two simple test problems that quantify the behavior of computational transport solutions in the presence of boundary layers that are not resolved by the spatial grid. In particular we study the quantitative effects of 'contamination' terms that, according to previous asymptotic analyses, may have a detrimental effect on the solutions obtained by both discontinuous finite element (DFEM) and characteristic-method (CM) spatial discretizations, at least for boundary layers caused by azimuthally asymmetric incident intensities. Few numerical results have illustrated the effects of this contamination, and none have quantified it to our knowledge. Our test problems use leading-order analytic solutions that should be equal to zero in the problem interior, which means the observed interior solution is the error introduced by the contamination terms. Results from DFEM solutions demonstrate that the contamination terms can cause error propagation into the problem interior for both orthogonal and non-orthogonal grids, and that this error is much worse for non-orthogonal grids. This behavior is consistent with the predictions of previous analyses. We conclude that these boundary layer test problems and their variants are useful tools for the study of errors that are introduced by unresolved boundary layers in diffusive transport problems. (authors)
Particle physics confronts the solar neutrino problem
Pal, P.B.
1991-06-01
This review has four parts. In Part I, we describe the reactions that produce neutrinos in the sun and the expected flux of those neutrinos on the earth. We then discuss the detection of these neutrinos, and how the results obtained differ from the theoretical expectations, leading to what is known as the solar neutrino problem. In Part II, we show how neutrino oscillations can provide a solution to the solar neutrino problem. This includes vacuum oscillations, as well as matter enhanced oscillations. In Part III, we discuss the possibility of time variation of the neutrino flux and how a magnetic moment of the neutrino can solve the problem. WE also discuss particle physics models which can give rise to the required values of magnetic moments. In Part IV, we present some concluding remarks and outlook for the recent future.
Solving the Rehearsal Problem with Planning and with Model Checking
Miller, Alice
Solving the Rehearsal Problem with Planning and with Model Checking Peter Gregory , Alice Miller. Planning problems have been modelled and solved as constraint satis- faction problems [14]. Similarly, model checking problems have been modelled and solved as constraint satisfaction problems [5, 6
Transport Test Problems for Hybrid Methods Development
Shaver, Mark W.; Miller, Erin A.; Wittman, Richard S.; McDonald, Benjamin S.
2011-12-28
This report presents 9 test problems to guide testing and development of hybrid calculations for the ADVANTG code at ORNL. These test cases can be used for comparing different types of radiation transport calculations, as well as for guiding the development of variance reduction methods. Cases are drawn primarily from existing or previous calculations with a preference for cases which include experimental data, or otherwise have results with a high level of confidence, are non-sensitive, and represent problem sets of interest to NA-22.
The Vacuum and the Cosmological Constant Problem
Gerald E. Marsh
2008-06-20
It will be argued here that the cosmological constant problem exists because of the way the vacuum is defined in quantum field theory. It has been known for some time that for QFT to be gauge invariant certain terms--such as part of the vacuum polarization tensor--must be eliminated either explicitly or by some form of regularization followed by renormalization. It has recently been shown that lack of gauge invariance is a result of the way the vacuum is defined, and redefining the vacuum so that the theory is gauge invariant may also offer a solution to the cosmological constant problem.
The "mean king's problem" with continuous variables
Alonso Botero; Yakir Aharonov
2007-10-16
We present the solution to the "mean king's problem" in the continuous variable setting. We show that in this setting, the outcome of a randomly-selected projective measurement of any linear combination of the canonical variables x and p can be ascertained with arbitrary precision. Moreover, we show that the solution is in turn a solution to an associated "conjunctive" version of the problem, unique to continuous variables, where the inference task is to ascertain all the joint outcomes of a simultaneous measurement of any number of linear combinations of x and p.
AKS systems and Lepage equivalent problems
Santiago Capriotti
2011-01-06
The integrable systems known as "AKS systems" admit a natural formulation in terms of a Hamiltonian picture. The Lagrangian side of these systems are far less known; a version in these terms can be found in a work of Feher et al. The purpose of these notes in to provide a novel description of AKS systems in terms of a variational problem different from the usual in mechanics. Additionally, and using techniques borrowed from an article of M. Gotay, it was possible to build the Hamiltonian side of this variational problem, allowing us to establish the equivalence with the usual approach to these integrable systems.
Pedicini, Marco
the protein fold via NMR constraints. In collaboration with the CERM (Centre for Magnetic Resonance problems. #12;Florence, 28/02/2011: Two applied inverse problems: The problem of protein folding 2 H CCN) Backbone #12;Florence, 28/02/2011: Two applied inverse problems: The problem of protein folding 3 Genoma
The "top player problem" Here are two solutions of the "top player" problem,
Sussmann, Hector
The "top player problem" Here are two solutions of the "top player" problem, IMPORTANT REMARK that every tournament has a top player. For this purpose, it suffices to prove that (*) For every natural number n, and every tournament t with n play- ers, t has a top player. (If we use T(t) for "t
Towards Better Approaches To Decision Support in Logistics Problems
Davidson, Ian
Towards Better Approaches To Decision Support in Logistics Problems Ian Davidson and Ryszard a decision support framework for logistics problems. The research covers methodologies, technologies and software tools. The framework considers typical characteristics of real-world logistics problems, common
Towards Better Approaches To Decision Support in Logistics Problems
Davidson, Ian
Towards Better Approaches To Decision Support in Logistics Problems Ian Davidson and Ryszard a decision support framework for logistics problems. The research covers methodologies, technologies and software tools. The framework considers typical characteristics of realworld logistics problems, common
Electrical Design: A Problem for Artificial Intelligence Research
Sussman, Gerald Jay
1977-06-01
This report outlines the problem of intelligent failure recovery in a problem-solver for electrical design. We want our problem solver to learn as much as it can from its mistakes. Thus we cast the engineering design ...
Household Water Quality Home Water Quality Problems
Liskiewicz, Maciej
Household Water Quality Home Water Quality Problems Causes and Treatments Blake Ross, Extension impurities can be corrected if they are a nuisance. Before beginning any treatment plan, have water tested select the most effective and economical treatment method. www.ext.vt.edu Produced by Communications
Some knotty problems in communicating wind energy
McCalley, James D.
;1. Understand your audience. 2. Adapt to them. #12;#12;W. Haman Renewable Energy Program Manager, Iowa EnergySome knotty problems in communicating wind energy Jean Goodwin Professor, Speech Communication-protective motivated reasoning" 2 #12;2 #12;GMOs 2 #12;Evolution 2 #12;Climate Change 2 #12;2 identity
Can Compactifications Solve the Cosmological Constant Problem?
Hertzberg, Mark P
2015-01-01
Recently, there have been claims in the literature that the cosmological constant problem can be dynamically solved by specific compactifications of gravity from higher-dimensional toy models. These models have the novel feature that in the four-dimensional theory, the cosmological constant $\\Lambda$ is much smaller than the Planck density and in fact accumulates at $\\Lambda=0$. Here we show that while these are very interesting models, they do not properly address the real cosmological constant problem. As we explain, the real problem is not simply to obtain $\\Lambda$ that is small in Planck units in a toy model, but to explain why $\\Lambda$ is much smaller than other mass scales (and combinations of scales) in the theory. Instead, in these toy models, all other particle mass scales have been either removed or sent to zero, thus ignoring the real problem. To this end, we provide a general argument that the included moduli masses are generically of order Hubble, so sending them to zero trivially sends the cos...
Distributed Algorithms for Optimal Power Flow Problem
Lam, Albert Y S; Tse, David
2011-01-01
Optimal power flow (OPF) is an important problem for power generation and it is in general non-convex. With the employment of renewable energy, it will be desirable if OPF can be solved very efficiently so its solution can be used in real time. With some special network structure, e.g. trees, the problem has been shown to have a zero duality gap and the convex dual problem yields the optimal solution. In this paper, we propose a primal and a dual algorithm to coordinate the smaller subproblems decomposed from the convexified OPF. We can arrange the subproblems to be solved sequentially and cumulatively in a central node or solved in parallel in distributed nodes. We test the algorithms on IEEE radial distribution test feeders, some random tree-structured networks, and the IEEE transmission system benchmarks. Simulation results show that the computation time can be improved dramatically with our algorithms over the centralized approach of solving the problem without decomposition, especially in tree-structured...
Scientific Knowledge 1. What is the Problem?
Giere, Ronald N.
Chapter 1 Scientific Knowledge 1. What is the Problem? Since the end of World War II, the influence scientific knowledge.1 In spite of the undeniable successes of post World War II science, there have always-scientists. After World War II, widespread serious questions about the nature of scientific #12;Giere. Scientific
611: Electromagnetic Theory Problem Sheet 6
Pope, Christopher
611: Electromagnetic Theory Problem Sheet 6 (1) Consider the expression for the electric field due · dS over a spherical surface that encloses the moving charge. (2a) Consider an electromagnetic wave density and the Poynting vector. (2c) Repeat the steps in (2a) and (2b) for an electromagnetic wave
611: Electromagnetic Theory Problem Sheet 5
Pope, Christopher
611: Electromagnetic Theory Problem Sheet 5 (1a) The Null Energy Condition on an energy = (k, 0, 0, k), show that the energy-momentum tensor Tµ = 1 4 Fµ F - 1 4µ F F (1) for electromagnetism if the equality kµ k Tµ = 0 is attained. (2) Show that the energy-momentum tensor for electromagnetism can
611: Electromagnetic Theory Problem Sheet 7
Pope, Christopher
611: Electromagnetic Theory Problem Sheet 7 (1) Consider the non-relativistic motion of a particle momentum of the particle about the centre of the force at r = 0.) (2a) Consider an electromagnetic wave the energy density and the Poynting vector. (2c) Repeat the steps in (2a) and (2b) for an electromagnetic
611: Electromagnetic Theory Problem Sheet 6
Pope, Christopher
611: Electromagnetic Theory Problem Sheet 6 (1) A small test particle (mass m and positive charge q of the orbit. (2a) Consider an electromagnetic wave for which the electric field is given by E = E0 sin t (sin in (2a) and (2b) for an electromagnetic wave for which the electric field is E = E0 cos z (cos t, - sin
611: Electromagnetic Theory Problem Sheet 5
Pope, Christopher
611: Electromagnetic Theory Problem Sheet 5 (1) Consider the expression for the electric field due · dS over a spherical surface that encloses the moving charge. (2a) Consider an electromagnetic wave density and the Poynting vector. (2c) Repeat the steps in (2a) and (2b) for an electromagnetic wave
611: Electromagnetic Theory Problem Sheet 5
Pope, Christopher
611: Electromagnetic Theory Problem Sheet 5 (1a) Show that the energy-momentum tensor for the electromagnetic field is tracefree, i.e. Tµ µ = 0. What would happen, in a spacetime dimension d = 4? (Assume) Show that the energy-momentum tensor for the electromagnetic field can be written as Tµ = 1 8 (Fµ F
The scattering problem for nonlocal potentials
Zolotarev, V A
2014-11-30
We solve the direct and inverse scattering problems for integro-differential operators which are one-dimensional perturbations of the self-adjoint second derivative operator on the half-axis. We also describe the scattering data for this class of operators. Bibliography: 28 titles.
Inverse Spectral Problem Proof of Main Result
Stanhope, Liz
Inverse Spectral Problem Proof of Main Result Geodesics on Weighted Projective Spaces Zuoqin Wang of Main Result Inverse Spectral Geometry Main Result Inverse Spectral Geometry Manifold setting: (M, g Proof of Main Result Inverse Spectral Geometry Main Result Inverse Spectral Geometry Manifold setting
Contemporary Mathematics On some spectral problems of
Kuchment, Peter
recently in optics, mesoscopic systems, quantum chaos, and other areas. In particular, problems of photonic arising recently in optics, mesoscopic sys- tems, quantum chaos, and other areas. Going into details, and applications. One can imag- ine a photonic crystal as a chunk of dielectric (insulator) with cavities ("bubbles
Chemical Evolution of Galaxies: a problem of
?umer, Slobodan
Chemical Evolution of Galaxies: a problem of Astroarchaelogy Francesca Matteucci, Trieste University Lubljana, February 24, 2014 #12;Chemical Evolution of Galaxies Beatrice Tinsley (27 January 1941- 23 March 1981) She started the field of galactic chemical evolution #12;Collaborators: #12;Outline
The LCA Problem Revisited Michael A. Bender
Danner, Andrew
The LCA Problem Revisited Michael A. Bender SUNY Stony Brook Mart´in Farach-Colton ¡ Rutgers thus dispel the fre- quently held notion that an optimal LCA computation is unwieldy (LCA), Range Minimum Query (RMQ), Cartesian Tree. 1 Introduction One of the most fundamental
The LCA Problem Revisited Michael A. Bender
Bender, Michael
The LCA Problem Revisited Michael A. Bender£ SUNY Stony Brook Mart´in Farach-ColtonÝ Rutgers thus dispel the fre- quently held notion that an optimal LCA computation is unwieldy (LCA), Range Minimum Query (RMQ), Cartesian Tree. 1 Introduction One of the most fundamental
The Wiener Disorder Problem with Finite Horizon
Peskir, Goran
of earthquakes or tsunamis; seismic signal processing; the appearance of a shock wave front; the studyThe Wiener Disorder Problem with Finite Horizon P. V. Gapeev and G. Peskir # Stochastic Process) time of 'disorder' when the drift of an observed Wiener process changes from one value to another
Exact Algorithms for Combinatorial Optimization Problems with ...
2012-03-30
We apply our general results to problems from wireless network design and mean-risk ..... In wireless networks, the transmission costs depend on the ...... The LP-based approach is applicable to general submodular functions; it yields a flexible and fast solution ... Optimal solutions to minimum total energy broadcasting.
Childhood Lead Poisoning What Is the Problem?
CS239775 Childhood Lead Poisoning What Is the Problem? Approximately 500,000 U.S. children aged 1. Lead poisoning can affect nearly every system in the body. Because lead poisoning often occurs with no obvious symptoms, it frequently goes unrecognized. Lead poisoning can cause learning disabilities
Convex Configurations In Free Boundary Problems
2002-10-30
The quantity ? > 0 has the meaning of 1/E with E the high activation energy in ...... regularity of solutions to phase transition problems, Annals of Math. 143 (1996) ...... The main objective of this appendix is to outline the main steps in the proof.
Certifying Solutions to Permutation Group Problems
Sorge, Volker
the integration of permutation group algorithms with proof planning. We consider eight basic questions arising planning. We consider eight basic questions arising in computational permutation group theory, for whichCertifying Solutions to Permutation Group Problems Arjeh Cohen 1 , Scott H. Murray 1#3; , Martin
Certifying Solutions to Permutation Group Problems
Murray, Scott H.
of permutation group algorithms with proof planning. We consider eight basic questions arising in com- putational the integration of permutation group algorithms from computer algebra with proof planning. We consider eight basicCertifying Solutions to Permutation Group Problems Arjeh Cohen1 , Scott H. Murray1, , Martin Pollet
Proof Planning some Permutation Group Problems | Abstract |
Sorge, Volker
of permutation group algorithms from computer algebra with proof planning. We consider eight basic questions handle eight basic queries, ranging from \\Is this permutation in that permutation group?" to \\What suÃ?cient information. In detail we concentrate on the following eight problems: Let G be a group
Inverse Problems in Engineering (Publisher: Taylor & Francis)
Vajda, Sandor
detailed Tables of Laplace transform pairs and employing some basic properties. A more recent alternative1 Inverse Problems in Engineering (Publisher: Taylor & Francis) Volume 10, Number 5, Year 2002, pp. Valkó1 and Sandor Vajda2 1 Harold Vance Department of Petroleum Engineering, Texas A&M University mail
Transdimensional Approaches to Geophysical Inverse Problems
Bodin, Thomas
complicated and quantitative mechanisms with simple qualitative concepts. This research was supported underTransdimensional Approaches to Geophysical Inverse Problems Thomas Bodin October 2010 A thesis Except where otherwise indicated in the text, the research described in this thesis is my own original
Stellar Atmospheres, Ht 2007 Problem Set 1
Korn, Andreas
Stellar Atmospheres, Ht 2007 Problem Set 1 Due date: Monday, 24 September 2007 at 10.15 1. LTE of how temperature is defined. (b) Where in the solar atmosphere would you expect the strongest for the photosphere? (c) How does the relation between matter and radiation differ between LTE and NLTE? What must
The Balanced Billing Cycle Vehicle Routing Problem
Groer, Christopher S [ORNL; Golden, Bruce [University of Maryland; Edward, Wasil [American University
2009-01-01
Utility companies typically send their meter readers out each day of the billing cycle in order to determine each customer s usage for the period. Customer churn requires the utility company to periodically remove some customer locations from its meter-reading routes. On the other hand, the addition of new customers and locations requires the utility company to add newstops to the existing routes. A utility that does not adjust its meter-reading routes over time can find itself with inefficient routes and, subsequently, higher meter-reading costs. Furthermore, the utility can end up with certain billing days that require substantially larger meter-reading resources than others. However, remedying this problem is not as simple as it may initially seem. Certain regulatory and customer service considerations can prevent the utility from shifting a customer s billing day by more than a few days in either direction. Thus, the problem of reducing the meterreading costs and balancing the workload can become quite difficult. We describe this Balanced Billing Cycle Vehicle Routing Problem in more detail and develop an algorithm for providing solutions to a slightly simplified version of the problem. Our algorithm uses a combination of heuristics and integer programming via a three-stage algorithm. We discuss the performance of our procedure on a real-world data set.
DESCRIPTION OF SELECTED WASTE MANAGEMENT PROBLEMS,
#12;DESCRIPTION OF SELECTED WASTE MANAGEMENT PROBLEMS, OPTIONS AND STRATEGIES Prepared for BC of Agriculture, Fisheries and Food Fisheries and Oceans Fraser River Action Plan November, 1996 Prepared by P. E Nutrients in Wastes 22 4.2.5 Waste Treatment 23 5.0 STRATEGY DEVELOPMENT 24 5.1 LAND USE MANAGEMENT 24 5
Problems on Non-Equilibrium Statistical Physics
Kim, Moochan
2011-08-08
Four problems in non-equilibrium statistical physics are investigated: 1. The thermodynamics of single-photon gas; 2. Energy of the ground state in Multi-electron atoms; 3. Energy state of the H2 molecule; and 4. The Condensation behavior in N...
Transport in Dynamical Astronomy and Multibody Problems
Koon, Wang Sang
Transport in Dynamical Astronomy and Multibody Problems Michael Dellnitz, Oliver Junge, Wang Sang key dynamical features, including almost invariant sets, resonance regions as well as transport rates of these different numerical tools and their applicability. In particular, we compute transport rates between two
Sitnikov problem as a source of jets
Marcin Misiak
2011-08-26
Sitnikov problem, consisting two close binaries and a third small body is considered, leading to a rapid ejection of the small body from the binaries. This mechanism is proposed as an explanation of jets in many astrophysical systems. Choosing appropriate initial condition relativistic final velocities can be achieved.
Chemistry 593: Problem Set 1 David Ronis
Ronis, David M.
Chemistry 593: Problem Set 1 Â© David Ronis McGill University DUE: Friday, January 23, 2015 1). What does = 1 signify? In Eq. (1.1), the first 4 terms were evaluated analytically, while in class. 4. Near a critical point, experiment shows that S(q) 1 + (q)2 , Winter, 2015 #12;Chemistry 593
Solving the problems of infectious waste disposal
Hoffman, S.L.; Cabral, N.J. )
1989-06-01
Lawmakers are increasing pressures to ensure safe, appropriate disposal of infectious waste. This article discusses the problems, the regulatory climate, innovative approaches, and how to pay for them. The paper discusses the regulatory definition of infectious waste, federal and state regulations, and project finance.
PARABOLIC OBSTACLE PROBLEMS APPLIED TO FINANCE A ...
2006-03-07
1. Introduction. 1.1. Background. The parabolic obstacle problem refers to finding the smallest supper-solution (for a .... Then given 0 1, we say that a function f on ? ? Rn × R is parabolically ...... MR MR2052937 (2005d:35276). [
The Wireless Synchronization Problem Shlomi Dolev
Lynch, Nancy
The Wireless Synchronization Problem Shlomi Dolev Ben-Gurion University Beer-Sheva, Israel dolev Newport MIT CSAIL Cambridge, MA, USA cnewport@csail.mit.edu ABSTRACT In this paper, we study the wireless-1-60558-396-9/09/08 ...$10.00. Categories and Subject Descriptors C.2.1 [Network Architecture and Design]: Wireless Net
A Generalized Multiscale Finite Element Method for Poroelasticity Problems I: Linear Problems
Brown, Donald L
2015-01-01
In this paper, we consider the numerical solution of poroelasticity problems that are of Biot type and develop a general algorithm for solving coupled systems. We discuss the challenges associated with mechanics and flow problems in heterogeneous media. The two primary issues being the multiscale nature of the media and the solutions of the fluid and mechanics variables traditionally developed with separate grids and methods. For the numerical solution we develop and implement a Generalized Multiscale Finite Element Method (GMsFEM) that solves problem on a coarse grid by constructing local multiscale basis functions. The procedure begins with construction of multiscale bases for both displacement and pressure in each coarse block. Using a snapshot space and local spectral problems, we construct a basis of reduced dimension. Finally, after multiplying by a multiscale partitions of unity, the multiscale basis is constructed in the offline phase and the coarse grid problem then can be solved for arbitrary forcin...
Globally strictly convex cost functional for an inverse parabolic problem
Michael V. Klibanov; Vladimir G. Kamburg
2015-02-04
A coefficient inverse problem for a parabolic equation is considered. Using a Carleman Weight Function, a globally strictly convex cost functional is constructed for this problem.
Role of rules in transfer of mathematical word problems
Kanevsky, Inna Glaz
2006-01-01
mathematics and mathematical word prblems]. Unpublished rawby seeing by doing: Arithmetic word problems. The Journal ofon solving mathematical word problems. The Journal of
Local Uniqueness for the Fixed Energy Fixed Angle Inverse Problem ...
Abstract. We prove local uniqueness for the inverse problem in obstacle scattering at a fixed energy and fixed incident angle. We consider the inverse problem of ...
Aleph Field Solver Challenge Problem Results Summary.
Hooper, Russell; Moore, Stan Gerald
2015-01-01
Aleph models continuum electrostatic and steady and transient thermal fields using a finite-element method. Much work has gone into expanding the core solver capability to support enriched mod- eling consisting of multiple interacting fields, special boundary conditions and two-way interfacial coupling with particles modeled using Aleph's complementary particle-in-cell capability. This report provides quantitative evidence for correct implementation of Aleph's field solver via order- of-convergence assessments on a collection of problems of increasing complexity. It is intended to provide Aleph with a pedigree and to establish a basis for confidence in results for more challeng- ing problems important to Sandia's mission that Aleph was specifically designed to address.
Scalable Adaptive Multilevel Solvers for Multiphysics Problems
Xu, Jinchao
2014-12-01
In this project, we investigated adaptive, parallel, and multilevel methods for numerical modeling of various real-world applications, including Magnetohydrodynamics (MHD), complex fluids, Electromagnetism, Navier-Stokes equations, and reservoir simulation. First, we have designed improved mathematical models and numerical discretizaitons for viscoelastic fluids and MHD. Second, we have derived new a posteriori error estimators and extended the applicability of adaptivity to various problems. Third, we have developed multilevel solvers for solving scalar partial differential equations (PDEs) as well as coupled systems of PDEs, especially on unstructured grids. Moreover, we have integrated the study between adaptive method and multilevel methods, and made significant efforts and advances in adaptive multilevel methods of the multi-physics problems.
The Spinless Relativistic Woods-Saxon Problem
Wolfgang Lucha; Franz F. Schoberl
2014-03-14
Motivated by the observation of a recent renewal of rather strong interest in the description of bound states by (semi-) relativistic equations of motion, we revisit, for the example of the Woods-Saxon interactions, the eigenvalue problem posed by the spinless Salpeter equation and recall various elementary knowledge, considerations, and techniques that practitioners seeking solutions to this specific reduction of the Bethe-Salpeter equation may find helpful.
Ergonomics problems and solutions in biotechnology laboratories
Coward, T.W.; Stengel, J.W.; Fellingham-Gilbert, P.
1995-03-01
The multi-functional successful ergonomics program currently implemented at Lawrence Livermore National Laboratory (LLNL) will be presented with special emphasis on recent findings in the Biotechnology laboratory environment. In addition to a discussion of more traditional computer-related repetitive stress injuries and associated statistics, the presentation will cover identification of ergonomic problems in laboratory functions such as pipetting, radiation shielding, and microscope work. Techniques to alleviate symptoms and prevent future injuries will be presented.
On some inverse problems in nuclear physics
B. Z. Belashev; M. K. Suleymanov
2001-10-23
Some inverse problems in high-energy physics, neutron diffraction and NMR spectroscopy are discussed. To solve them, the Fourier integrated transformation method and the Maximum Entropy Technique (MENT) were used. The integrated images of experimental distributions are shown to be informative when determining the space-time parameters of a particle generation zone and when analysing blurred spectra. The efficiency of the above methods was checked by comparing relevant results with the results obtained independently.
Problem and Preferred Management Practices Identification Workshop
Patchen, Douglas G.
2003-03-10
The goals for this workshop were: to introduce key players in the Appalachian basin oil industry to DOE's new Preferred Upstream Management Practices (PUMP) program; to explain the various elements of our two-year project in detail; to transfer technology through a series of short, invited talks; to identify technical problems and best management practices; and to recruit members for our Preferred Management Practices (PMP) Council.
611: Electromagnetic Theory Problem Sheet 4
Pope, Christopher
611: Electromagnetic Theory Problem Sheet 4 (1a) The angular momentum 3-vector L is defined by Li) Prove from the above that for the electromagnetic field, L = 1 4 r × (E × B) d3 x (b) Prove that dR dt = P E where R is the centre of mass of the electromagnetic field, defined by R Wd3x = rWd3x
Quantum heuristic algorithm for traveling salesman problem
Jeongho Bang; Seokwon Yoo; James Lim; Junghee Ryu; Changhyoup Lee; Jinhyoung Lee
2012-11-06
We propose a quantum heuristic algorithm to solve a traveling salesman problem by generalizing Grover search. Sufficient conditions are derived to greatly enhance the probability of finding the tours with extremal costs, reaching almost to unity and they are shown characterized by statistical properties of tour costs. In particular for a Gaussian distribution of the tours along the cost we show that the quantum algorithm exhibits the quadratic speedup of its classical counterpart, similarly to Grover search.
Gamma-Ray Bursts: Progress, Problems & Prospects
Bing Zhang; Peter Meszaros
2003-11-13
The cosmological gamma-ray burst (GRB) phenomenon is reviewed. The broad observational facts and empirical phenomenological relations of the GRB prompt emission and afterglow are outlined. A well-tested, successful fireball shock model is introduced in a pedagogical manner. Several important uncertainties in the current understanding of the phenomenon are reviewed, and prospects of how future experiments and extensive observational and theoretical efforts may address these problems are discussed.
Diabaticity of nuclear motion: problems and perspectives
Nazarewicz, W [Joint Inst. for Heavy Ion Research, Oak Ridge, TN (United States)] [Joint Inst. for Heavy Ion Research, Oak Ridge, TN (United States)
1992-12-31
The assumption of adiabatic motion lies in foundations of many models of nuclear collective motion. To what extend can nuclear modes be treated adiabatically? Due to the richness and complexity of the nuclear many-body problem there is no unique answer to this question. The challenges of nuclear collective dynamics invite exciting interactions between several areas of physics such as nuclear structure, field theory, nonlinear dynamics, transport theory, and quantum chaos.
Top 10 Problems on Massive Stars
Cassio Barbosa; Donald Figer
2005-10-18
We have asked a number of researchers to compile their lists of the top 10 problems in the field of massive stars. This paper is a compilation of these lists. We attempted to survey observers and theorists and those studying all evolutionary stages in the lives of massive stars. Each list reflects the proposer's personal point of view, but hopefully, this compilation will motivate new young astronomers and begin a new series of discussion.
Diffusion Preconditioner for Discontinuous Galerkin Transport Problems
Barbu, Anthony Petru
2011-08-08
, as that is de ned by boundary conditions depending on the problem: X @ 2@ HT ~A 00 @ H ~GC + X 2 HT ~A 10 1 3 t h A00 i 1 ~A 01 H FC + X 2 ( t s)H T A00 H FC = X 2 HT sH T A00 (l+1... : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 32 A. Fourier Expansion Analysis . . . . . . . . . . . . . . . . . 32 1. Operator De nition . . . . . . . . . . . . . . . . . . . 32 2. Fourier Expansion . . . . . . . . . . . . . . . . . . . . 36 B. Properties of Proposed DSA Method...
Sequential valuation networks for asymmetric decision problems
Demirer, Riza; Shenoy, Prakash P.
2006-02-16
.040 R b, 0.100 e, 0.600 A as, 0.400 al, 0.460 am, 0.140 .120 .138 .042 .540 .036 .024 A al, 0.700 am, 0.300 .070 .030 Demirer and Shenoy 6 Figure 3. A Decision Tre Representation and Solution of the Reactor Problem. R Profit, B$ D 1 A D 2 C 8 ?4...
Prof. Rich Kozick Some Logic Problems
Kozick, Richard J.
. Problem 2 The Nellbuck Corp. has four boilers, A,B,C, and D. Boiler A can supply 50% of the steam to run process P, boiler B can supply 40%, boiler C can supply 40%, and boiler D can supply 50%. Devise a truth table that shows when there is enough steam to run the process. Assume A is "1" when boiler A is ready
Are shorted pipeline casings a problem
Gibson, W.F. )
1994-11-01
The pipeline industry has many road and railroad crossings with casings which have been in service for more than 50 years without exhibiting any major problems, regardless of whether the casing is shorted to or isolated from the carrier pipe. The use of smart pigging and continual visual inspection when retrieving a cased pipeline segment have shown that whether shorted or isolated, casings have no significant bearing on the presence or absence of corrosion on the carrier pipe.
Riemke, Richard Allan
2002-09-01
The Reactor Excursion and Leak Analysis Program with 3D capability1 (RELAP5-3D) is a reactor system analysis code that has been developed at the Idaho National Engineering and Environmental Laboratory (INEEL) for the U. S. Department of Energy (DOE). The 3D capability in RELAP5-3D includes 3D hydrodynamics2 and 3D neutron kinetics3,4. Assessment, verification, and validation of the 3D capability in RELAP5-3D is discussed in the literature5,6,7,8,9,10. Additional assessment, verification, and validation of the 3D capability of RELAP5-3D will be presented in other papers in this users seminar. As with any software, user problems occur. User problems usually fall into the categories of input processing failure, code execution failure, restart/renodalization failure, unphysical result, and installation. This presentation will discuss some of the more generic user problems that have been reported on RELAP5-3D as well as their resolution.
PROBLEM OF THE WEEK Solution of Problem No. 2 (Fall 2007 ...
1910-70-91
Problem: Let 3n points (n ? 2) be distributed in space so that no 4 points are ... Partition the points into three sets of n points each, and connect two points by a ...
SOME OPEN PROBLEMS AND CONJECTURES ASSOCIATED WITH THE INVARIANT SUBSPACE PROBLEM
-0122214 and the DOD Grant ACI-0325846. Positivity, to appear. #12;THE INVARIANT SUBSPACE PROBLEM 2 equipped with the norm x + iy = sup[0,2] x cos + y sin . With the standard algebraic operations
Using coiled tubing in HP/HT corrosive gas wells
1997-06-01
High-yield-strength (100,000 psi) coiled tubing (CT) material has allowed for CT intervention in Mobile Bay Norphlet completions. These wells are approximately 22,000-ft-vertical-depth, high-pressure, hydrogen sulfide (H{sub 2}S) gas wells. Operations performed on the Norphlet wells include a scale cleanout to approximately 22,000 ft, a hydrochloric acid (HCl) job at 415 F, and buildup removal from a safety valve. The scale cleanout was performed first with a spiral wash tool. The well was killed with 10-lbm/gal sodium bromide (NaBr) brine; the same brine was used for cleanout fluid. Cost savings of 60% were realized. A HCl matrix acid job at 415 F was performed next, followed by a scale cleanout across the downhole safety valve. The safety valve was cleared of debris in 1 operational day. Estimated cost of the CT operation was 5 to 10% less than that of a rig workover. The 100,000-psi-yield Ct material used for the Mobile Bay operations does not comply with the (NACE) Standard MR-0175. But on the basis of extensive laboratory testing by the CT manufacturer, the decision was made that the material would pass a modified test performed with decreased H{sub 2}S levels. A maximum level of 400 ppm H{sub 2}S was determined as the safe working limit. Because the maximum H{sub 2}S content in the wells described later was 120 ppm, the risk of sulfide-stress cracking (SSC) was considered acceptably low. Elevated bottomhole temperatures (BHT`s) increase the corrosion rate of metals exposed to corrosives. Extensive laboratory testing of corrosion inhibitors allowed for design of a matrix-acidizing treatment to remove near-wellbore damage caused by lost zinc bromide (ZnBr) completion brine.
Identifying, mapping, and antisensing candidate HP1 sequences in tomato
Hommel, Jonathan Dean
2013-02-22
-nitro-methylurea-induced rat mammary cancer by the dietary flavanol quercetin, Caner Res 48: 5754-5760. Yen, H. C. , Shelton, B. A. , Howard, L. R, Lee, S. , Vrebalov, J. , Giovannoni, J. J. (1997). The tomato high-pigment locus maps to chromosome 2 and influences plastome...
Broader source: Energy.gov [DOE]
Multiple vulnerabilities can be exploited by malicious users to disclose certain information and by malicious people to disclose potentially sensitive information.
Stack Gas Heat Recovery from 100 to 1200 HP Boilers
Judson, T. H.
1980-01-01
With newspaper reports of March 1980 fuel price increases at as much as a 110% annualized rate, energy users are becoming more keenly aware of the urgency of conserving energy--and energy dollars. It is becoming increasingly more difficult...
RoboLinguisticsEtt textfrstelseprogram Henrik Palmr, d01hp
text, och för det andra är ingen koreferens ännu löst. Utdata från textförståelsedelen är en lista av
U-010:HP Onboard Administrator Unspecified Flaw Lets Remote Users...
Broader source: Energy.gov (indexed) [DOE]
Manager Unspecified Flaw Lets Remote Users Gain Unauthorized Access V-120: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control...
HP E6000A Mini-OTDR User's Guide
Park, Namkyoo
members. ISO 9001 Certification Produced to ISO 9001 interna- tional quality system standard as part and Service Office. Certification Hewlett-Packard Company certi- fies that this product met its pub- lished
i hc Tng hp Cardiff v thnh ph Cardiff
Davies, Christopher
u c trang b Wi-Fi vi 28 trm tin hc vÃ kÃ½ tÃºc xÃ¡ nÃ o cng c ni mng Internet. Hiu trng i hc lÃ GiÃ¡o ti cÃ¡c mÃ´n hc sau: Q Kinh doanh Q K thut Q Sc khe vÃ Khoa hc i sng Sinh viÃªn cng cÃ³ th np n chuyn tip hoch tip tc hc lÃªn cao cp d b, i hc hoc sau i hc. Q ang tÃ¬m mt khÃ³a hc tng cng tp trung vÃ o hc thut
Spectral/hp Finite Element Models for Fluids and Structures
Payette, Gregory
2012-07-16
for the numerical simulation of the fully geometrically nonlinear mechanical response of isotropic, laminated composite and functionally graded elastic shell structures. In addition, we also present a simple and efficient sparse global finite element coefficient...
Enforcement Policy Statement: Off Mode Standards for CAC/HP ...
Office of Environmental Management (EM)
power consumption standard for central air conditioners or central air conditioning heat pumps (CACHP) until 180 days following publication of a final rule establishing a...
From: Mulveny, Jennifer [mailto:jennifer.mulveny@hp.com]
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
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 Delicious Rank EERE:FinancingPetroleum12, 2015ExecutiveFluorescentDan O"Hagan To:JMulveny, Jennifer
HP Supercomputer at NREL Garners Top Honor - News Feature | NREL
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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journalvivo Low-Dose Lowï‚—34 Revision 0 Approved for69HNUtHUl I IV1-30
Microsoft Word - HP Brief#75 (03-2015)
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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework uses concrete7 Assessment of the Performance of
A Knowledge-Theoretic Approach to Distributed Problem Solving
Woolridge, Mike
A Knowledge-Theoretic Approach to Distributed Problem Solving Michael Wooldridge Department.J.Wooldridge@qmw.ac.uk Abstract. Traditional approaches to distributed problem solving have treated the problem as one of distributed search. In this paper, we propose an alternative, logic-based view of distributed problem solv
A KnowledgeTheoretic Approach to Distributed Problem Solving
Woolridge, Mike
A KnowledgeTheoretic Approach to Distributed Problem Solving Michael Wooldridge Department.J.Wooldridge@qmw.ac.uk Abstract. Traditional approaches to distributed problem solving have treated the problem as one of distributed search. In this paper, we propose an alternative, logicbased view of distributed problem solv
Solving LWE problem with bounded errors in polynomial time
International Association for Cryptologic Research (IACR)
Solving LWE problem with bounded errors in polynomial time Jintai Ding1,2 Southern Chinese call the learning with bounded errors (LWBE) problems, we can solve it with complexity O(nD ). Keywords, this problem corresponds to the learning parity with noise (LPN) problem. There are several ways to solve
ROBOTS IN PROBLEM-SOLVING AND PROGRAMMING. Scott Turner
Hill, Gary
82 ROBOTS IN PROBLEM-SOLVING AND PROGRAMMING. Scott Turner University of Northampton Avenue Campus://www.computing.northampton.ac.uk/~gary ABSTRACT This paper looks at the experience of teaching on a module where problem-solving is taught first, then programming. The main tools for the problem- solving part, alongside two problem-solving approaches, are tasks
E 101: Introduction to Engineering & Problem Solving College of Engineering
Hunt, William F.
E 101: Introduction to Engineering & Problem Solving College of Engineering Fall 2008 Sections to the field of Engineering. An objective will be to integrate teamwork, problem solving, and verbal to Engineering & Problem Solving Course Website: [WEB] Introduction to Engineering & Problem Solving, http
CU Science Education Seminar Series Assessment & Improvement of Problem Solving
Colorado at Boulder, University of
CU Science Education Seminar Series Assessment & Improvement of Problem Solving Problem solving problem solving abilities, and many students never develop competence. A great deal of effort has been devoted to developing heuristics to help students solve problems, but there is little evidence
Energy Management Problems Under Uncertainties for Grid-Connected Microgrids
Zhang, Wei
1 Energy Management Problems Under Uncertainties for Grid-Connected Microgrids : a Chance prob- lems under uncertainties for a grid-connected microgrid. The problems are motivated by practical microgrid problems such as peak power shaving and frequency regulation. The problems require constraints
Top-percentile traffic routing problem by Dynamic Programming
Grothey, Andreas
Top-percentile traffic routing problem by Dynamic Programming Andreas Grothey, Xinan Yang School according to top-percentile pricing. We call this problem the Top-percentile Traffic Routing Problem (Tp problem, which is hard to solve due to the integer variables introduced by top-percentile pricing. Several
Numerical solution of an inverse medium scattering problem with a ...
G Bao et al
2010-06-29
Jul 1, 2010 ... To overcome these difficulties, a stable and efficient recursive .... model problems
Groups and semigroups with a one-counter word problem
Holt, Derek
Groups and semigroups with a one-counter word problem Abstract We prove that a finitely generated semigroup whose word problem is a one, that a group with a one-counter word problem is virtually cyclic. We prove also that the word problem
Introduction The median problem for the reversal distance in
Lonardi, Stefano
genomes E. Ohlebusch, M.I. Abouelhoda, K. Hockel, J. Stallkamp University of Ulm, Germany CPM 2005 The median problem for the reversal distance in circular bacterial genomes #12;Introduction Methods Conclusion General Problem Distances Specific Problem Median Problem Given 3 genomes G1, G2, and G3, find
Public problems: Still waiting on the marketplace for solutions
Gover, J.; Carayannis, E.; Huray, P.
1997-10-01
This report addresses the need for government sponsored R and D to address real public problems. The motivation is that a public benefit of the money spent must be demonstrated. The areas identified as not having appropriate attention resulting in unmet public needs include healthcare cost, cost and benefits of regulations, infrastructure problems, defense spending misaligned with foreign policy objectives, the crime problem, energy impact on the environment, the education problem, low productivity growth industry sectors, the income distribution problem, the aging problem, the propagation of disease and policy changes needed to address the solution of these problems.
A generalization of Szebehely's inverse problem of dynamics
W. Sarlet; T. Mestdag; G. Prince
2013-05-14
The so-called inverse problem of dynamics is about constructing a potential for a given family of curves. We observe that there is a more general way of posing the problem by making use of ideas of another inverse problem, namely the inverse problem of the calculus of variations. We critically review and clarify different aspects of the current state of the art of the problem (mainly restricted to the case of planar curves), and then develop our more general approach.
Minnesota, University of
Page 117 5. Problem-Solving Labs This chapter contains some materials that describe our cooperative-group problem solving labs. This material is described below. Page Frequently Asked Questions About Our Problem-solving compares our problem-solving labs with traditional verification labs and inquiry labs. 125 General Lesson
PÃ¶schel, Reinhard
Some problems THE Galois connection Clones and algebras The lattice of clones Completeness CSP Open aa #12;Some problems THE Galois connection Clones and algebras The lattice of clones Completeness CSP Completeness CSP Open problems Final remarks aa #12;Some problems THE Galois connection Clones and algebras
Studies in nonlinear problems of energy
Matkowsky, B.J.
1992-07-01
Emphasis has been on combustion and flame propagation. The research program was on modeling, analysis and computation of combustion phenomena, with emphasis on transition from laminar to turbulent combustion. Nonlinear dynamics and pattern formation were investigated in the transition. Stability of combustion waves, and transitions to complex waves are described. Combustion waves possess large activation energies, so that chemical reactions are significant only in thin layers, or reaction zones. In limit of infinite activation energy, the zones shrink to moving surfaces, (fronts) which must be found during the analysis, so that (moving free boundary problems). The studies are carried out for limiting case with fronts, while the numerical studies are carried out for finite, though large, activation energy. Accurate resolution of the solution in the reaction zones is essential, otherwise false predictions of dynamics are possible. Since the the reaction zones move, adaptive pseudo-spectral methods were developed. The approach is based on a synergism of analytical and computational methods. The numerical computations build on and extend the analytical information. Furthermore, analytical solutions serve as benchmarks for testing the accuracy of the computation. Finally, ideas from analysis (singular perturbation theory) have induced new approaches to computations. The computational results suggest new analysis to be considered. Among the recent interesting results, was spatio-temporal chaos in combustion. One goal is extension of the adaptive pseudo-spectral methods to adaptive domain decomposition methods. Efforts have begun to develop such methods for problems with multiple reaction zones, corresponding to problems with more complex, and more realistic chemistry. Other topics included stochastics, oscillators, Rysteretic Josephson junctions, DC SQUID, Markov jumps, laser with saturable absorber, chemical physics, Brownian movement, combustion synthesis, etc.
CrowdPhase: crowdsourcing the phase problem
Jorda, Julien; Sawaya, Michael R. [Institute for Genomics and Proteomics, 611 Charles Young Drive East, Los Angeles, CA 90095 (United States); Yeates, Todd O., E-mail: yeates@mbi.ucla.edu [Institute for Genomics and Proteomics, 611 Charles Young Drive East, Los Angeles, CA 90095 (United States); Molecular Biology Institute, 611 Charles Young Drive East, Los Angeles, CA 90095 (United States); University of California, 611 Charles Young Drive East, Los Angeles, CA 90095 (United States)
2014-06-01
The idea of attacking the phase problem by crowdsourcing is introduced. Using an interactive, multi-player, web-based system, participants work simultaneously to select phase sets that correspond to better electron-density maps in order to solve low-resolution phasing problems. The human mind innately excels at some complex tasks that are difficult to solve using computers alone. For complex problems amenable to parallelization, strategies can be developed to exploit human intelligence in a collective form: such approaches are sometimes referred to as ‘crowdsourcing’. Here, a first attempt at a crowdsourced approach for low-resolution ab initio phasing in macromolecular crystallography is proposed. A collaborative online game named CrowdPhase was designed, which relies on a human-powered genetic algorithm, where players control the selection mechanism during the evolutionary process. The algorithm starts from a population of ‘individuals’, each with a random genetic makeup, in this case a map prepared from a random set of phases, and tries to cause the population to evolve towards individuals with better phases based on Darwinian survival of the fittest. Players apply their pattern-recognition capabilities to evaluate the electron-density maps generated from these sets of phases and to select the fittest individuals. A user-friendly interface, a training stage and a competitive scoring system foster a network of well trained players who can guide the genetic algorithm towards better solutions from generation to generation via gameplay. CrowdPhase was applied to two synthetic low-resolution phasing puzzles and it was shown that players could successfully obtain phase sets in the 30° phase error range and corresponding molecular envelopes showing agreement with the low-resolution models. The successful preliminary studies suggest that with further development the crowdsourcing approach could fill a gap in current crystallographic methods by making it possible to extract meaningful information in cases where limited resolution might otherwise prevent initial phasing.
Romanovski polynomials in selected physics problems
A. P. Raposo; H. J. Weber; D. Alvarez-Castillo; M. Kirchbach
2007-06-26
We briefly review the five possible real polynomial solutions of hypergeometric differential equations. Three of them are the well known classical orthogonal polynomials, but the other two are different with respect to their orthogonality properties. We then focus on the family of polynomials which exhibits a finite orthogonality. This family, to be referred to as the Romanovski polynomials, is required in exact solutions of several physics problems ranging from quantum mechanics and quark physics to random matrix theory. It appears timely to draw attention to it by the present study. Our survey also includes several new observations on the orthogonality properties of the Romanovski polynomials and new developments from their Rodrigues formula.
The quadratic stochastic Euclidean bipartite matching problem
Sergio Caracciolo; Gabriele Sicuro
2015-10-08
We propose a new approach for the study of the stochastic Euclidean bipartite matching problem with quadratic cost between two sets of $N$ points, $N\\gg 1$. The points are supposed independently randomly generated on a domain $\\Omega\\subset\\mathbb R^d$ with a given generic distribution $\\rho(\\mathbf x)$ on $\\Omega$. In particular, we derive a general expression for the correlation function and for the average optimal cost of the optimal matching. A previous ansatz, for the case of uniform distribution on the flat hypertorus, is derived as particular case.
Analytical solutions to matrix diffusion problems
Kekäläinen, Pekka
2014-10-06
We report an analytical method to solve in a few cases of practical interest the equations which have traditionally been proposed for the matrix diffusion problem. In matrix diffusion, elements dissolved in ground water can penetrate the porous rock surronuding the advective flow paths. In the context of radioactive waste repositories this phenomenon provides a mechanism by which the area of rock surface in contact with advecting elements is greatly enhanced, and can thus be an important delay mechanism. The cases solved are relevant for laboratory as well for in situ experiments. Solutions are given as integral representations well suited for easy numerical solution.
Quantum conductance problems and the Jacobi ensemble
P. J. Forrester
2006-01-12
In one dimensional transport problems the scattering matrix $S$ is decomposed into a block structure corresponding to reflection and transmission matrices at the two ends. For $S$ a random unitary matrix, the singular value probability distribution function of these blocks is calculated. The same is done when $S$ is constrained to be symmetric, or to be self dual quaternion real, or when $S$ has real elements, or has real quaternion elements. Three methods are used: metric forms; a variant of the Ingham-Seigel matrix integral; and a theorem specifying the Jacobi random matrix ensemble in terms of Wishart distributed matrices.
ERROR ANALYSIS OF COMPOSITE SHOCK INTERACTION PROBLEMS.
LEE,T.MU,Y.ZHAO,M.GLIMM,J.LI,X.YE,K.
2004-07-26
We propose statistical models of uncertainty and error in numerical solutions. To represent errors efficiently in shock physics simulations we propose a composition law. The law allows us to estimate errors in the solutions of composite problems in terms of the errors from simpler ones as discussed in a previous paper. In this paper, we conduct a detailed analysis of the errors. One of our goals is to understand the relative magnitude of the input uncertainty vs. the errors created within the numerical solution. In more detail, we wish to understand the contribution of each wave interaction to the errors observed at the end of the simulation.
Noncommutative Algebraic Equations and Noncommutative Eigenvalue Problem
Albert Schwarz
2000-04-27
We analyze the perturbation series for noncommutative eigenvalue problem $AX=X\\lambda$ where $\\lambda$ is an element of a noncommutative ring, $ A$ is a matrix and $X$ is a column vector with entries from this ring. As a corollary we obtain a theorem about the structure of perturbation series for Tr $x^r$ where $x$ is a solution of noncommutative algebraic equation (for $r=1$ this theorem was proved by Aschieri, Brace, Morariu, and Zumino, hep-th/0003228, and used to study Born-Infeld lagrangian for the gauge group $U(1)^k$).
Nigeria's internal petroleum problems: perspectives and choices
Iwayemi, A.
1984-10-01
Oil-producing Nigeria has been hard hit by weakening oil markets, the replacement of the civilian government by a military regime, and sporadic but severe energy supply problems. The latter included shortages of petroleum products and irregular availability of electricity. These conditions will worsen unless Nigeria takes immediate action to introduce demand management, including efficient pricing and other conservation measures, and timely investment to expand domestic energy facilities, change the institutional and policy environment, and assure the availability of imported supplies. It is also important to encourage the development of renewable energy sources. 16 references, 2 tables.
Counting systems and the First Hilbert problem
Yaroslav D. Sergeyev
2012-03-14
The First Hilbert problem is studied in this paper by applying two instruments: a new methodology distinguishing between mathematical objects and mathematical languages used to describe these objects; and a new numeral system allowing one to express different infinite numbers and to use these numbers for measuring infinite sets. Several counting systems are taken into consideration. It is emphasized in the paper that different mathematical languages can describe mathematical objects (in particular, sets and the number of their elements) with different accuracies. The traditional and the new approaches are compared and discussed.
Taming the Runaway Problem of Inflationary Landscapes
Lawrence J. Hall; Taizan Watari; T. T. Yanagida
2006-03-15
A wide variety of vacua, and their cosmological realization, may provide an explanation for the apparently anthropic choices of some parameters of particle physics and cosmology. If the probability on various parameters is weighted by volume, a flat potential for slow-roll inflation is also naturally understood, since the flatter the potential the larger the volume of the sub-universe. However, such inflationary landscapes have a serious problem, predicting an environment that makes it exponentially hard for observers to exist and giving an exponentially small probability for a moderate universe like ours. A general solution to this problem is proposed, and is illustrated in the context of inflaton decay and leptogenesis, leading to an upper bound on the reheating temperature in our sub-universe. In a particular scenario of chaotic inflation and non-thermal leptogenesis, predictions can be made for the size of CP violating phases, the rate of neutrinoless double beta decay and, in the case of theories with gauge-mediated weak scale supersymmetry, for the fundamental scale of supersymmetry breaking.
The PHEV Charging Infrastructure Planning (PCIP) Problem
Dashora, Yogesh [University of Texas, Austin; Barnes, J. Wesley [University of Texas, Austin; Pillai, Rekha S [ORNL; Combs, Todd E [ORNL; Hilliard, Michael R [ORNL; Chinthavali, Madhu Sudhan [ORNL
2010-01-01
Increasing debates over a gasoline independent future and the reduction of greenhouse gas (GHG) emissions has led to a surge in plug-in hybrid electric vehicles (PHEVs) being developed around the world. The majority of PHEV related research has been directed at improving engine and battery operations, studying future PHEV impacts on the grid, and projecting future PHEV charging infrastructure requirements. Due to the limited all-electric range of PHEVs, a daytime PHEV charging infrastructure will be required for most PHEV daily usage. In this paper, for the first time, we present a mixed integer mathematical programming model to solve the PHEV charging infrastructure planning (PCIP) problem for organizations with thousands of people working within a defined geographic location and parking lots well suited to charging station installations. Our case study, based on the Oak Ridge National Laboratory (ORNL) campus, produced encouraging results, indicates the viability of the modeling approach and substantiates the importance of considering both employee convenience and appropriate grid connections in the PCIP problem.
Engineering problems of tandem-mirror reactors
Moir, R.W.; Barr, W.L.; Boghosian, B.M.
1981-10-22
We have completed a comparative evaluation of several end plug configurations for tandem mirror fusion reactors with thermal barriers. The axi-cell configuration has been selected for further study and will be the basis for a detailed conceptual design study to be carried out over the next two years. The axi-cell end plug has a simple mirror cell produced by two circular coils followed by a transition coil and a yin-yang pair, which provides for MHD stability. This paper discusses some of the many engineering problems facing the designer. We estimated the direct cost to be 2$/W/sub e/. Assuming total (direct and indirect) costs to be twice this number, we need to reduce total costs by factors between 1.7 and 2.3 to compete with future LWRs levelized cost of electricity. These reductions may be possible by designing magnets producing over 20T made possible by use of combinations of superconducting and normal conducting coils as well as improvements in performance and cost of neutral beam and microwave power systems. Scientific and technological understanding and innovation are needed in the area of thermal barrier pumping - a process by which unwanted particles are removed (pumped) from certain regions of velocity and real space in the end plug. Removal of exhaust fuel ions, fusion ash and impurities by action of a halo plasma and plasma dump in the mirror end region is another challenging engineering problem discussed in this paper.
Permafrost problems as they affect gas pipelines (the frost heave problem)
Lipsett, G.B.
1980-01-01
The major problems associated with the construction of a large diameter gas pipeline in a permafrost region are outlined in this presentation. Data pertains to the design and construction of the Alaska Highway Gas Pipeline Project. One of the main problems is maintaining the permafrost in its frozen state. Large diameter pipelines operating at high capacity are heat generators. Therefore, it is necessary to refrigerate the gas to ensure that it remains below 0/sup 0/C at all points in the pipeline system. The pipeline also passes through unfrozen ground where the potential for frost heave exists. The conditions under which frost heave occurs are listed. The extent and location of potential frost heave problem areas must be determined and a frost heave prediction method must be established before construction begins. Another task involves development of design criteria for the pipeline/soil interaction analysis. Remedial methods for use during the operational phase are also discussed. (DMC)
The primordial deuterium abundance : problems and prospects
Sergei A. Levshakov; Fumio Takahara; Wilhelm H. Kegel
1997-12-10
The current status of extragalactic deuterium abundance is discussed using two examples of `low' and `high' D/H measurements. We show that the discordance of these two types of D abundances may be a consequence of the spatial correlations in the stochastic velocity field. Within the framework of the generalized procedure (accounting for such effects) one finds good agreement between different observations and the theoretical predictions for standard big bang nucleosynthesis (SBBN). In particular, we show that the deuterium absorption seen at z = 2.504 toward Q1009+2956 and the H+D Ly-alpha profile observed at z = 0.701 toward Q1718+4807 are compatible with D/H $\\sim 4.1 - 4.6\\times10^{-5}$. This result supports SBBN and, thus, no inhomogeneity is needed. The problem of precise D/H measurements is discussed.
An inverse problem for Schwinger pair production
Hebenstreit, Florian
2015-01-01
The production of electron-positron pairs in time-dependent electric fields (Schwinger mechanism) depends non-linearly on the applied field profile. Accordingly, the resulting momentum spectrum is extremely sensitive to small variations of the field parameters. Owing to this non-linear dependence it is so far unpredictable how to choose a field configuration such that a predetermined momentum distribution is generated. We show that quantum kinetic theory along with optimal control theory can be used to approximately solve this inverse problem for Schwinger pair production. We exemplify this by studying the superposition of a small number of harmonic components resulting in predetermined signatures in the asymptotic momentum spectrum. In the long run, our results could facilitate the observation of this yet unobserved pair production mechanism in quantum electrodynamics by providing suggestions for tailored field configurations.
Current problems in plasma spray processing
Berndt, C.C.; Brindley, W.; Goland, A.N.; Herman, H.; Houck, D.L.; Jones, K.; Miller, R.A.; Neiser, R.; Riggs, W.; Sampath, S.; Smith, M.; Spanne, P.
1991-12-31
This detailed report summarizes 8 contributions from a thermal spray conference that was held in late 1991 at Brookhaven National Laboratory (Upton, Long Island, NY, USA). The subject of ``Plasma Spray Processing`` is presented under subject headings of Plasma-particle interactions, Deposit formation dynamics, Thermal properties of thermal barrier coatings, Mechanical properties of coatings, Feed stock materials, Porosity: An integrated approach, Manufacture of intermetallic coatings, and Synchrotron x-ray microtomographic methods for thermal spray materials. Each section is intended to present a concise statement of a specific practical and/or scientific problem, then describe current work that is being performed to investigate this area, and finally to suggest areas of research that may be fertile for future activity.
Current problems in plasma spray processing
Berndt, C.C.; Brindley, W.; Goland, A.N.; Herman, H.; Houck, D.L.; Jones, K.; Miller, R.A.; Neiser, R.; Riggs, W.; Sampath, S.; Smith, M.; Spanne, P. . Thermal Spray Lab.)
1991-01-01
This detailed report summarizes 8 contributions from a thermal spray conference that was held in late 1991 at Brookhaven National Laboratory (Upton, Long Island, NY, USA). The subject of Plasma Spray Processing'' is presented under subject headings of Plasma-particle interactions, Deposit formation dynamics, Thermal properties of thermal barrier coatings, Mechanical properties of coatings, Feed stock materials, Porosity: An integrated approach, Manufacture of intermetallic coatings, and Synchrotron x-ray microtomographic methods for thermal spray materials. Each section is intended to present a concise statement of a specific practical and/or scientific problem, then describe current work that is being performed to investigate this area, and finally to suggest areas of research that may be fertile for future activity.
Nuclear aspects of the solar neutrino problem
H. Oberhummer; A. N. Ivanov; N. I. Troitskaya; M. Faber
1997-05-26
The present status of the nuclear reaction rates determining the solar neutrino flux is discussed. This includes the reaction rates for the two branching ratios of the three pp-chains involving the reactions 3He(3He,2p)4He and 3He(4He,gamma)7Be for the first branching, and 7Be(e-,nu_e)7Li and 7Be(p,gamma)7B for the second branching. Mainly we will concentrate on the basic nuclear reaction p + p -> D + e+ + nu_e of the pp-chains. We use a relativistic field theory model of the deuteron to calculate the low-energy cross section for this reaction. The theoretical prediction of the cross section obtained is about 2.9 times largerthan given in the conventional potential approach. The consequences of this new reaction rate for the solar neutrino problem will be presented and discussed.
FEAST Eigensolver for non-Hermitian Problems
Kestyn, James; Tang, Ping Tak Peter
2015-01-01
A detailed new upgrade of the FEAST eigensolver targeting non-Hermitian eigenvalue problems is presented and thoroughly discussed. It aims at broadening the class of eigenproblems that can be addressed within the framework of the FEAST algorithm. The algorithm is ideally suited for computing selected interior eigenvalues and their associated right/left bi-orthogonal eigenvectors,located within a subset of the complex plane. It combines subspace iteration with efficient contour integration techniques that approximate the left and right spectral projectors. We discuss the various algorithmic choices that have been made to improve the stability and usability of the new non-Hermitian eigensolver. The latter retains the convergence property and multi-level parallelism of Hermitian FEAST, making it a valuable new software tool for the scientific community.
Solar neutrinos and the solar composition problem
Carlos Pena-Garay; Aldo Serenelli
2008-11-16
Standard solar models (SSM) are facing nowadays a new puzzle: the solar composition problem. New determinations of solar metal abundances lead SSM calculations to conflict with helioseismological measurements, showing discrepancies that extend from the convection zone to the solar core and can not be easily assigned to deficiencies in the modelling of the solar convection zone. We present updated solar neutrino fluxes and uncertainties for two SSM with high (old) and low (new) solar metallicity determinations. The uncertainties in iron and carbon abundances are the largest contribution to the uncertainties of the solar neutrino fluxes. The uncertainty on the ^14N+p -> ^15O+g rate is the largest of the non-composition uncertainties to the CNO neutrino fluxes. We propose an independent method to help identify which SSM is the correct one. Present neutrino data can not distinguish the solar neutrino predictions of both models but ongoing measurements can help to solve the puzzle.
Quantum field theory as eigenvalue problem
Arnold Neumaier
2003-03-10
A mathematically well-defined, manifestly covariant theory of classical and quantum field is given, based on Euclidean Poisson algebras and a generalization of the Ehrenfest equation, which implies the stationary action principle. The theory opens a constructive spectral approach to finding physical states both in relativistic quantum field theories and for flexible phenomenological few-particle approximations. In particular, we obtain a Lorentz-covariant phenomenological multiparticle quantum dynamics for electromagnetic and gravitational interaction which provides a representation of the Poincare group without negative energy states. The dynamics reduces in the nonrelativistic limit to the traditional Hamiltonian multiparticle description with standard Newton and Coulomb forces. The key that allows us to overcome the traditional problems in canonical quantization is the fact that we use the algebra of linear operators on a space of wave functions slightly bigger than traditional Fock spaces.
Inverse Optimization: An Application to the Capacitated Plant Location Problem
Bitran, Gabriel R.
Inverse optimization refers to the fact that each time a Lagrangean derived from a given mathematical programming problem is solved, it produces an optimal solution to some problem with a different right hand side. This ...
Motivation Problem Statement Algorithm Implementation Evaluation Wrap Up FIFO Service
Karsten, Martin
Motivation Problem Statement Algorithm Implementation Evaluation Wrap Up FIFO Service (currently on Sabbatical at University of Kaiserslautern) ANCS 2011 ANCS 2011 1/29 #12;Motivation Problem Statement Algorithm Implementation Evaluation Wrap Up Motivation residential access link Â concurrent flows
Spherical radon transforms and mathematical problems of thermoacoustic tomography
Ambartsoumian, Gaik
2009-06-02
including approximation theory, integral geometry, inverse problems for PDEs, etc. In Chapter I we give a brief description of thermoacoustic tomography (TAT or TCT) and introduce the SRT. In Chapter II we consider the injectivity problem for SRT. A major...
ON AN INVERSE HYPERBOLIC PROBLEM MICHAEL V. KLIBANOV
of recovery of an initial condition of a hyperbolic PDE. This problem is also called sometimes "thermoacoustic boundary measurements. This problem is also called sometimes "thermoacoustic tomography". In thermoacoustic
Numerical Approximations of Stochastic Optimal Stopping and Control Problems
Siska, David
2007-01-01
We study numerical approximations for the payoff function of the stochastic optimal stopping and control problem. It is known that the payoff function of the optimal stopping and control problem corresponds to the solution ...
Petroleum Engineering 416 Solving Common Production Engineering Problems
42 Petroleum Engineering 416 Solving Common Production Engineering Problems Credit 3: (3-0) Satisfies Technical Elective Requirement Catalog Description: Application of petroleum engineering tools, methods, and techniques to solve real problems that petroleum engineers encounter in the course
NETWORK TOMOGRAPHY: NEW RIGOROUS APPROACHES FOR DISCRETE AND CONTINUOUS PROBLEMS
Baras, John S.
of the problem formulations and solutions are inspired by generalizations of "electric impedance problems of interconnected hetero- geneous sensors gathering and transmitting information about the weather, road traffic lines and equipment in communication networks, medical diagnostics, monitoring of power grids
Archival Report Behavioral Problems After Early Life Stress
Wisconsin at Madison, University of
, Poverty, Stress http://dx.doi.org/10.1016/j.biopsych.2014.04.020 It is increasingly clear that early life or chronic poverty with behavioral problems, such as aggressive and oppositional behavior (1). Such problems
Spectral problems of optical waveguides and quantum graphs
Ong, Beng Seong
2006-10-30
In this dissertation, we consider some spectral problems of optical waveguide and quantum graph theories. We study spectral problems that arise when considerating optical waveguides in photonic band-gap (PBG) materials. Specifically, we address...
A multiscale framework for Bayesian inference in elliptic problems
Parno, Matthew David
2011-01-01
The Bayesian approach to inference problems provides a systematic way of updating prior knowledge with data. A likelihood function involving a forward model of the problem is used to incorporate data into a posterior ...
Recognizing and Managing Common Health Problems of Beef Cattle
Faries Jr., Floron C.
2005-06-10
Producers can successfully manage many health problems in beef cattle if they detect them and take steps early. This publication explains common problems found in beef cattle, their probable causes, and suggested corrective and preventive measures....
Weekday and Weekend Air Pollutant Levels in Ozone Problem Areas...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Weekday and Weekend Air Pollutant Levels in Ozone Problem Areas in the U.S. Weekday and Weekend Air Pollutant Levels in Ozone Problem Areas in the U.S. 2005 Diesel Engine Emissions...
A Solution to the Problem of Updating Encyclopedias
Zalta, Edward N.
A Solution to the Problem of Updating Encyclopedias Eric M. Hammer and Edward N. Zalta Center¸caise is still available in loose-leaf format. 1 Eric Hammer and Edward N. Zalta 2 problem, namely, a `dynamic
Scattered neutron tomography based on a neutron transport problem
Scipolo, Vittorio
2005-11-01
and scattered images generated from a beam passing through an optically thick object. This inverse problem makes use of a computationally efficient, two-dimensional forward problem based on neutron transport theory that effectively calculates the detector...
The Inequality-Satisfiability problem Dorit S. Hochbaum
Hochbaum, Dorit S.
The Inequality-Satisfiability problem Dorit S. Hochbaum Department of Industrial Engineering as inequality-clauses or i-clauses), each of which contains up to k n-variable inequalities; the problem
Two Problems With Cost Structures There are two problems with the cost structure
Kirsh, David
the factors that go into a cost can be compared. I argue that in Starbucks and other café environments we need as currently practiced. Ordering & Preparing Drinks: Starbucks To study how the problems of multiple costs, communicating and preparing espresso-based drinks at Starbucks. Starbucks does not permit filming so we brought
Tavakoli, Ruhollah
2010-01-01
The structure of many real-world optimization problems includes minimization of a nonlinear (or quadratic) functional subject to bound and singly linear constraints (in the form of either equality or bilateral inequality) which are commonly called as continuous knapsack problems. Since there are efficient methods to solve large-scale bound constrained nonlinear programs, it is desirable to adapt these methods to solve knapsack problems, while preserving their efficiency and convergence theories. The goal of this paper is to introduce a general framework to extend a box-constrained optimization solver to solve knapsack problems. This framework includes two main ingredients which are O(n) methods; in terms of the computational cost and required memory; for the projection onto the knapsack constrains and the null-space manipulation of the related linear constraint. The main focus of this work is on the extension of Hager-Zhang active set algorithm (SIAM J. Optim. 2006, pp. 526--557). The main reasons for this ch...
Problems of the Newtonian N-Body Problem: Off to Infinity in Finite Time
Morrow, James A.
. Saari and Zhihong Xia[6], we are introduced to a less intuitive result of Newton's law of gravitation side of equation (2.1) is just ma and the right hand side is Fnet which is Newton's law of gravitation that interact with each other gravitationally. Physically, this problem can be described as this: given only
Dettmann, Carl
as a challenge. The exam will contain questions similar to the first two categories. To obtain credit points, either get 50 on the exam, or submit reasonable attempts at 1/3 of the problems AND 30 on the exam. Parts (energy per unit time), and find its value in SI units. What theoretical significance do you expect
Free boundary problem and hydrodynamic limit Jeremy Quastel
Quastel, Jeremy
problem comes up in nuclear waste management 1 . Radioactive waste is placed in a container and buried
Some integral geometry problems on Finsler and Riemannian ...
Yernat M. Assylbekov
2012-06-23
Institute of Mathematics Informatics and Mechanics. Kazakhstan. Joint work with Nurlan Dairbekov. Yernat M. Assylbekov. Integral geometry problems on Finsler ...
Nonlinear Integral Equations for the Inverse Problem in Corrosion ...
2012-06-15
Nonlinear Integral Equations for the Inverse. Problem in Corrosion Detection from Partial. Cauchy Data. Fioralba Cakoni. Department of Mathematical Sciences, ...
Approximate solution of a Cauchy problem for the Helmholtz equation
of radiation (e.g. a light emitting diode) is a problem of frequent occurrence. As a rule, experimental
Nonuniqeness in a free boundary problem from combustion
2014-10-31
Nonuniqeness in a free boundary problem from combustion. Arshak Petrosyan joint with Aaron Yip. Department of Mathematics. Purdue University.
EXPRESSING COMPLEMENTARITY PROBLEMS IN AN ALGEBRAIC MODELING LANGUAGE
Meyer, Robert R.
for optimality conditions in inequalityÂconstrained problems. They also arise in a variety of applications from
EXPRESSING COMPLEMENTARITY PROBLEMS IN AN ALGEBRAIC MODELING LANGUAGE AND
Ferris, Michael C.
the natural form for optimality conditions in inequality-constrained problems. They also arise in a variety
PENALTY METHODS FOR THE SOLUTION OF GENERALIZED NASH EQUILIBRIUM PROBLEMS
Kanzow, Christian
PENALTY METHODS FOR THE SOLUTION OF GENERALIZED NASH EQUILIBRIUM PROBLEMS (WITH COMPLETE TEST@mathematik.uni-wuerzburg.de February 11, 2009 Abstract The generalized Nash equilibrium problem (GNEP) is an extension of the classical Nash equilibrium problem where both the objective functions and the constraints of each player may
OPTIMIZATION REFORMULATIONS OF THE GENERALIZED NASH EQUILIBRIUM PROBLEM
Kanzow, Christian
OPTIMIZATION REFORMULATIONS OF THE GENERALIZED NASH EQUILIBRIUM PROBLEM USING NIKAIDO@mathematik.uni-wuerzburg.de July 17, 2006 #12;Abstract. We consider the generalized Nash equilibrium problem which, in contrast to the standard Nash equilibrium problem, allows joint constraints of all players involved in the game. Using
Solving convex problems involving powers using conic optimization
Glineur, FranÃ§ois
Solving convex problems involving powers using conic optimization and a new self-concordant barrier CFG 07 Heidelberg University CFG 07 Solving convex problems involving powers using conic optimization remarks Future plans CFG 07 Solving convex problems involving powers using conic optimization 2 #12
The Role of Critiquing in Cooperative Problem Solving
Fischer, Gerhard
The Role of Critiquing in Cooperative Problem Solving GERHARD FISCHER, ANDREAS C. LEMKE, THOMAS MASTAGLlO, and ANDERS I. MORCH University of Colorado, Boulder Cooperative problem-solving systems help-presenting a reasoned opinion about a user's product or action-is a major activity of a cooperative problem-solving
Understanding students' poor performance on mathematical problem solving in physics
Understanding students' poor performance on mathematical problem solving in physics Jonathan introductory, algebra-based physics students perform poorly on mathematical problem solving tasks in physics skills needed to solve problems in physics, or (2) students do not know how to apply the mathematical
3. Cooperative Group Problem Solving in Discussion Sections
Minnesota, University of
Page 37 3. Cooperative Group Problem Solving in Discussion Sections This chapter contains some materials we use in teaching problem-solving and cooperative group skills to our students. These materials are described briefly below. Page Why Cooperative Group Problem Solving? This brief summary explains why we use
A Distributed Problem Solving Approach to Cooperative Information Gathering
A Distributed Problem Solving Approach to Cooperative Information Gathering Tim Oates, M. V heterogeneous sources. This paper draws upon a long history of thought in Distributed Problem Solving (DPS should be inferred. Problem Solving: The task of information gathering in a distributed setting can
Solving the University Class Scheduling Problem Using Advanced ILP Techniques
Aloul, Fadi
Solving the University Class Scheduling Problem Using Advanced ILP Techniques Ahmed Wasfy and Fadi and algorithms have been proposed to solve scheduling problems, most of which are based on local search the problem. The ILP model of interest is developed and solved using the three advanced ILP solvers based
SOLVING SIMULTANEOUS STABILIZATION BMI PROBLEMS WITH PENNON \\Lambda
Henrion, Didier
SOLVING SIMULTANEOUS STABILIZATION BMI PROBLEMS WITH PENNON \\Lambda D. HENRION y z , M. KO Å¸ CVARA classification, in increasing degree of comÂ plexity: ffl Problems that can be solved analytically of equations that can be solved by hand with e.g. Gaussian elimination; ffl Problems that can be solved
Observations of Collaborative Behavior in COMPS Computer Mediated Problem Solving
Luther, Ken
Observations of Collaborative Behavior in COMPS Computer Mediated Problem Solving Jung Hee Kim.glass @valpo.edu Abstract COMPS is a web-delivered computer-mediated problem solving environment for student in the problem-solving process. These observations confirm that COMPS indeed fa- cilitates true collaborative
Using Qualitative Representations in Controlling Engineering Problem Solving1
Forbus, Kenneth D.
1 Using Qualitative Representations in Controlling Engineering Problem Solving1 Yusuf Pisan y Ave. STE 300 Evanston, IL 60201-3150 (847) 491-7698 Abstract Engineering problem solving requires both in the domain of engineering thermodynamics. TPS to date has solved over 30 problems, and its solutions
A Distributed Problem Solving Approach to Cooperative Information Gathering
Massachusetts at Amherst, University of
A Distributed Problem Solving Approach to Cooperative Information Gathering Tim Oates, M. V in Distributed Problem Solving (DPS) to present a model of this type of cooperative information ac quisition and no official endorsement should be inferred. Problem Solving: The task of information gathering
A New Method for Mapping Optimization Problems onto Neural Networks
Peterson, Carsten
LU TP 891 March 1989 A New Method for Mapping Optimization Problems onto Neural Networks Carsten for obtaining approximate solutions to difficult optimization problems within the neural network paradigm redundancy that has plagued these problems when using straightforward neural network techniques
DYNAMIC INVERSE PROBLEM IN A WEAKLY LATERALLY INHOMOGENEOUS MEDIUM.
problem is mainly solved by means of the map migration method. The map migration method assumes of an independent way to recover the velocity profile above the interface may hinder the map migration techniques on depth, z, inverse problems of geophysics are often reduced to one-dimensional inverse problems
Vienna MAY 2001 (part 1) 1 Lectures on Inverse Problems
Arnold, Anton
#12; Vienna MAY 2001 (part 1) 16 Slide 15 ' & $ % Parabolic Problems A Simple Example: A heat transfer ' & $ % Plan for the Three Lectures 1. For the rest of today: Some of the above topics. 2. X-ray Tomography) 4 Slide 4 ' & $ % First Concepts Model Data Direct Problem Inverse Problem #12; Vienna MAY 2001
The Complexity of the Boolean Formula Value Problem Henning Schnoor
Vollmer, Heribert
The Complexity of the Boolean Formula Value Problem Henning Schnoor September 9, 2005 Abstract We examine the complexity of the formula value problem for Boolean formulas, which is the following decision problem: Given a Boolean formula without variables, does it evalu- ate to true? We show
Numerical Analysis of Nonlinear Multiharmonic Eddy Current Problems
Schoeberl, Joachim
Numerical Analysis of Nonlinear Multiharmonic Eddy Current Problems F. Bachinger U. Langer J. Sch¨oberl April 2004 Abstract This work provides a complete analysis of eddy current problems, rang- ing from at providing a complete analysis of general nonlinear eddy current problems and their numerical treatment
Problem Tools The censored process Results Censored stable processes
Problem Tools The censored process Results Censored stable processes Andreas E. Kyprianou1 Juan-Carlos Pardo2 Alex Watson1 1 Unversity of Bath, UK. 2 CIMAT, Mexico. #12;Problem Tools The censored process(Xt 0) will frequently appear as will ^ = 1 - . #12;Problem Tools The censored process Results Stable
Minimax optimization problem of structural design Elena Cherkaev *, Andrej Cherkaev
Cherkaev, Andrej
. Introduction Structural optimization is a problem of distributing given materials in the structure to createMinimax optimization problem of structural design Elena Cherkaev *, Andrej Cherkaev University discusses a problem of robust optimal design of elastic structures when the loading is unknown
Draft for comment Important problems in information retrieval
Soergel, Dagobert
Draft for comment Important problems in information retrieval Dagobert Soergel College of Library and Information Services University of Maryland College Park, MD 20742 August 1989 (Most of the work on this paper the problem and determining information needs. Problem 2. Knowing how people use and process information
Priority Algorithms for Graph Optimization Problems Allan Borodin
Larsen, Kim Skak
Priority Algorithms for Graph Optimization Problems Allan Borodin University of Toronto bor of priority or "greedy-like" algorithms as initiated in [10] and as extended to graph theoretic problems, there are several natural input formulations for a given problem and we show that priority algorithm bounds
On the Mixed Chinese Postman Problem T. K. Ralphs
Ralphs, Ted
On the Mixed Chinese Postman Problem T. K. Ralphs School of Operations Research and Industrial Engineering, Cornell University 8 June 1993 Abstract The mixed Chinese postman problem is a version of the well-known Chinese postman problem in which the underlying graph consists of both directed
CLASSICAL MECHANICS: THE THREE-BODY PROBLEM ZI CHONG KAO
May, J. Peter
CLASSICAL MECHANICS: THE THREE-BODY PROBLEM ZI CHONG KAO Abstract. The Three-Body Problem is one of the oldest unsolved problems of classical mechanics. It arose as a natural extension of the Two-Body Prob of numerous techniques in classical mechan- ics as well as dynamical systems. Understanding the Three
Approximate Solutions and Performance Bounds for the Sensor Placement Problem
Kavcic, Aleksandar
the problem is formulated as a state estimation problem with PMU placement depending on a key condition algorithms are also considered. More recently in [10], PMU placement is considered in a different context in relationship to the optimal algorithm. An estimation-theoretic approach to the PMU placement problem
Kernelization and Enumeration: New Approaches to Solving Hard Problems
Meng, Jie
2011-08-08
NP-Hardness is a well-known theory to identify the hardness of computational problems. It is believed that NP-Hard problems are unlikely to admit polynomial-time algorithms. However since many NP-Hard problems are of ...
HYPERBOLIC BALANCE LAWS: RIEMANN INVARIANTS AND THE GENERALIZED RIEMANN PROBLEM
HYPERBOLIC BALANCE LAWS: RIEMANN INVARIANTS AND THE GENERALIZED RIEMANN PROBLEM MATANIA BEN-ARTZI AND JIEQUAN LI Abstract. The Generalized Riemann Problem (GRP) for nonlinear hyperbolic system of m balance-resolution) generalization of the Godunov scheme. Key words: Hyperbolic balance laws, Generalized Riemann problem (GRP
Asymptotics of Nonlinear Biharmonic Eigenvalue Problems of MEMS
Ward, Michael Jeffrey
Asymptotics of Nonlinear Biharmonic Eigenvalue Problems of MEMS Alan E. Lindsay and Michael J. Ward Problems of MEMS Overview of Nonlinear Eigenvalue Problems of MEMS Calculation of the Pull-In Voltage of the Maximal Solution Branch. Of more mathematical interest in PDE. CAIMS Â p. #12;A MEMS Capacitor d L
COMPLEX WAVELET REGULARIZATION FOR SOLVING INVERSE PROBLEMS IN REMOTE SENSING
Weiss, Pierre
COMPLEX WAVELET REGULARIZATION FOR SOLVING INVERSE PROBLEMS IN REMOTE SENSING Mika¨el Carlavan Sophia-Antipolis - France ABSTRACT Many problems in remote sensing can be modeled as the min- imization processing: sparsity and regular- ity priors. 1. INTRODUCTION Some problems in remote sensing consist
The Euclidean k-Supplier Problem Viswanath Nagarajan1
Shachnai, Hadas
The Euclidean k-Supplier Problem Viswanath Nagarajan1 , Baruch Schieber1 , and Hadas Shachnai2 1, Haifa 32000, Israel Abstract. In the k-supplier problem, we are given a set of clients C and set present a 1 + 3 2.73 approximation algorithm for the k-supplier problem in Euclidean metrics
The Vital Core Connectivity Problem Sylvia Boyd and Amy Cameron
Boyd, Sylvia
The Vital Core Connectivity Problem Sylvia Boyd and Amy Cameron School of Information Technology) are partitioned into two classes vital vertices, which represent the vital core of the network, and secondary vertices. We consider the vital core connectivity problem (VCC), which is the problem of finding a minimum
A planning problem combining calculus of variations and optimal transport
Lachapelle, Aimé
problem as cost. The decoupled case is more involved since it is nonlinear in the transport plan. Keywords/assignment problems have their modern roots in planning prob- lems (optimally transporting coal from mines to steel and will compare them. The coupled problem thus amounts to solve a standard optimal transport where the cost
Bulu, Saniye Tugba
2009-05-15
of scientific content and problem-solving outcomes. Second, the study examined whether students’ prior knowledge and meta cognitive skills predict their success in problem solving across different scaffolding conditions. A total of nineteen classes were randomly...
Dean, Thomas R.
in over three billion lines of production IT source. 1. Introduction Design Recovery is an automated was spent worldwide to remediate and test hundreds of billion lines of program source code for the Y2K problem. Over 80% of these lines were written in COBOL. The size and scope of the Y2K problem made
A TRANSIENT EDDY CURRENT PROBLEM ON A MOVING DOMAIN. MATHEMATICAL ANALYSIS
RodrÃguez, Rodolfo
A TRANSIENT EDDY CURRENT PROBLEM ON A MOVING DOMAIN. MATHEMATICAL ANALYSIS ALFREDO BERM is to introduce and analyze a weak formulation of the transient eddy current problem governing electromagnetic. Electromagnetic forming, transient eddy current problem, axisymmetric problem, degenerate parabolic problem
On the computational complexity of sequence design problems
Hart, W.E. [Sandia National Labs., Albuquerque, NM (United States)
1997-12-01
Inverse protein folding concerns the identification of an amino acid sequence that folds to a given structure. Sequence design problems attempt to avoid the apparant difficulty of inverse protein folding by defining an energy that can be minimized to find protein-like sequences. We evaluate the practical relevance of two sequence design problems by analyzing their computational complexity. We show that the canonical method of sequence design is intractable and describe approximation algorithms for this problem. We also describe an efficient algorithm that exactly solves the grand canonical method. Our analysis shows how sequence design problems can fail to reduce the difficulty of the inverse protein folding problem and highlights the need to analyze these problems to evaluate their practical relevance. 10 refs., 8 figs.
On the computational complexity of sequence design problems
Hart, W.E. [Sandia National Labs., Albuquerque, NM (United States). Algorithms and Discrete Mathematics Dept.
1996-12-31
Inverse protein folding concerns the identification of an amino acid sequence that folds to a given structure. Sequence design problems attempt to avoid the apparent difficulty of inverse protein folding by defining an energy that can be minimized to find protein-like sequences. The authors evaluate the practical relevance of two sequence design problems by analyzing their computation complexity. They show that the canonical method of sequence design is intractable, and describe approximation algorithms for this problem. The authors also describe an efficient algorithm that exactly solves the grand canonical method. The analysis shows how sequence design problems can fail to reduce the difficulty of the inverse protein folding problem, and highlights the need to analyze these problems to evaluate their practical relevance.
Solving the Optimal Trading Trajectory Problem Using a Quantum Annealer
Gili Rosenberg; Poya Haghnegahdar; Phil Goddard; Peter Carr; Kesheng Wu; Marcos López de Prado
2015-08-28
We solve a multi-period portfolio optimization problem using D-Wave Systems' quantum annealer. We derive a formulation of the problem, discuss several possible integer encoding schemes, and present numerical examples that show high success rates. The formulation incorporates transaction costs (including permanent and temporary market impact), and, significantly, the solution does not require the inversion of a covariance matrix. The discrete multi-period portfolio optimization problem we solve is significantly harder than the continuous variable problem. We present insight into how results may be improved using suitable software enhancements, and why current quantum annealing technology limits the size of problem that can be successfully solved today. The formulation presented is specifically designed to be scalable, with the expectation that as quantum annealing technology improves, larger problems will be solvable using the same techniques.
Abdoun, Otman; Abouchabka, Jaafar
2012-01-01
In this paper, we present a new mutation operator, Hybrid Mutation (HPRM), for a genetic algorithm that generates high quality solutions to the Traveling Salesman Problem (TSP). The Hybrid Mutation operator constructs an offspring from a pair of parents by hybridizing two mutation operators, PSM and RSM. The efficiency of the HPRM is compared as against some existing mutation operators; namely, Reverse Sequence Mutation (RSM) and Partial Shuffle Mutation (PSM) for BERLIN52 as instance of TSPLIB. Experimental results show that the new mutation operator is better than the RSM and PSM.
A Comparison of Graphical Techniques for Asymmetric Decision Problems
Bielza, Concha; Shenoy, Prakash P.
1999-11-01
Reactor problem using each of the four techniques. For each technique, we highlight the strengths, weaknesses, and some open issues that perhaps can be resolved with further research....
Cut Generation for Optimization Problems with Multivariate Risk ...
2014-08-14
Aug 14, 2014 ... and Rudolf (2013) found the homeland security allocation problem ...... In addition, we can let z ? L, using the lower bound information on VaR, ...
European Geothermal Drilling Experience-Problem Areas and Case...
Office of Scientific and Technical Information (OSTI)
Drilling Experience-Problem Areas and Case Studies Baron, G.; Ungemach, P. 15 GEOTHERMAL ENERGY; BOREHOLES; DRILLING; EVALUATION; EXPLORATION; GEOTHERMAL RESOURCES; ITALY;...
New multi-commodity flow formulations for the pooling problem
2015-06-11
Jun 11, 2015 ... ... of pooling problems are in the refining and petrochemical industries [49]. ... an important feature of numerous other manufacturing processes, ...
An extremal problem for a class of entire functions
2015-09-26
An extremal problem for a class of entire. functions. Alexandre Eremenko? and Peter Yuditskii†. May 29, 2008. Abstract. Soi f une fonction enti`ere de type ...
Adaptive finite element method for eddy current problems
Adaptive finite element method for eddy current problems. In this chapter we shall discuss Maxwell's equations at very low frequencies. We also refer to [bo98 ...
Chance-Constrained Multi-Terminal Network Design Problems
2015-04-15
products to customers in local areas. The deterministic version of our problem ...... an approach to stochastic programming of heating oil. Management Science ...
Local Search for Hop-constrained Directed Steiner Tree Problem ...
2014-08-20
where unmanned aerial vehicles (UAVs) can be placed to relay informa- tion gathered in ... test problems related to the UAV-based multi-target surveillance.
conference on inverse problems in honor of gunther uhlmann
2012-06-20
Jun 18, 2012 ... illustrating some of the problems that arose in trying to build systems to image heart and lung function. 9 Carlos Kenig, Limiting Carleman ...
Robust Equilibrated Residual Error Estimator for Diffusion Problems ...
2011-11-11
Nov 11, 2011 ... Let T = {K} be a finite element partition of the domain ? that is regular, ... dominant diffusion problem are done through a partition of the unity.
Distribution of resonances for the Neumann problem in linear ...
parametrix for the Dirichlet problem for (?e + ?2)v = 0 by using the parametrix for the ..... Picking up a partition of unity and summing up the corresponding.
STABILITY OF COUPLED-PHYSICS INVERSE PROBLEMS WITH ...
2013-09-14
stability for the non-linear problem of recovering ? from one internal measurement. ..... depends on this collection of tubular neighborhoods we use a partition of ...
Transmission Problem Between Two Herschel-Bulkley Fluids
Farid Messelmi
2011-02-28
The paper is devoted to the study of transmission problem between two Herschel-Bulkley fluids with different viscosities, yield limits and power law index.
Robust Unit Commitment Problem with Demand Response and ...
Oct 31, 2010 ... Robust Unit Commitment Problem with Demand Response and Wind Energy. Long Zhao(longzhao ***at*** mail.usf.edu) Bo Zeng(bozeng ...
The Inverse Problem for Derivative Securities of Interest Rate
2008-02-02
May 26, 2000 ... Market price for risk of interest rate reflects the close relation between risk and yield of securities dependent on interest rate. An inverse problem.
Optimization Online - p-facility Huff location problem on networks
Rafael Blanquero
2014-10-30
Oct 30, 2014 ... Abstract: The p-facility Huff location problem aims at locating facilities on a competitive environment so as to maximize the market share.
Numerical solution of an inverse medium scattering problem with a ...
G Bao et al
2010-06-29
Jul 1, 2010 ... computational resources over the corresponding classical inverse ... model problems; energy estimates of the wave fields are obtained; a PML ...
Singular perturbation problem in boundary/fractional combustion
2015-08-18
reaction-diffusion equation, where the reaction term is of combustion type. ... Free boundary problem, combustion theory, boundary reaction- diffusion, fractional ...
Verification Method for SSI Problems with Extended Parameter Ranges
Broader source: Energy.gov [DOE]
Verification Method for SSI Problems with Extended Parameter Ranges 2014 U.S. DOE Natural Phenomena Hazards Meeting Carl J. Costantino and Associates www.cjcassoc.com
Solving Two-stage Robust Optimization Problems by A Constraint ...
2011-06-17
Robust unit commitment problem with demand response and wind energy. Technical report, available in optimization-online, University of South. Florida, 2010.
Spectral approximation to a transmission eigenvalue problem and ...
2015-03-05
putation of the first transmission eigenvalue, to estimate the index of refraction of ... We consider in this paper the interior transmission eigenvalue problem for the.
Approximation Algorithms for Union and Intersection Covering Problems
Cygan, Marek; Leonardi, Stefano; Mucha, Marcin; Pilipczuk, Marcin; Sankowski, Piotr
2011-01-01
In a classical covering problem, we are given a set of requests that we need to satisfy (fully or partially), by buying a subset of items at minimum cost. For example, in the k-MST problem we want to find the cheapest tree spanning at least k nodes of an edge-weighted graph. Here nodes and edges represent requests and items, respectively. In this paper, we initiate the study of a new family of multi-layer covering problems. Each such problem consists of a collection of h distinct instances of a standard covering problem (layers), with the constraint that all layers share the same set of requests. We identify two main subfamilies of these problems: - in a union multi-layer problem, a request is satisfied if it is satisfied in at least one layer; - in an intersection multi-layer problem, a request is satisfied if it is satisfied in all layers. To see some natural applications, consider both generalizations of k-MST. Union k-MST can model a problem where we are asked to connect a set of users to at least one of ...
Optimization Problems in Natural Gas Transportation Systems: A ...
2014-09-15
While short term factors can significantly affect the demand for natural gas, ...... rithm to search for global solutions to the pooling problem. ... v entering element.
Independent set problems and odd-hole-preserving graph reductions
Warren, Jeffrey Scott
2009-05-15
. Independent Set Problems For a graph G = (V;E), S V is an independent set if no vertices in S are adjacent. The maximum independent set (MIS) problem is to find an independent set of largest cardinality in a given graph. The maximum weight independent set... for determining the optimality of a best known solution of the master problem. Many have worked to solve both the MIS and MWIS problems exactly. Tech- niques include explicit enumeration of maximal independent sets [4], combinato- rial branch-and-bound [5, 6, 7, 8...
A Dynamic Traveling Salesman Problem with Stochastic Arc Costs
Alejandro Toriello
2012-08-31
Aug 31, 2012 ... Abstract: We propose a dynamic traveling salesman problem (TSP) with stochastic arc costs motivated by applications, such as dynamic ...
The hierarchy problem and the cosmological constant problem in the Standard Model
Fred Jegerlehner
2015-03-03
We argue that the SM in the Higgs phase does not suffer form a "hierarchy problem" and that similarly the "cosmological constant problem" resolves itself if we understand the SM as a low energy effective theory emerging from a cut-off medium at the Planck scale. We discuss these issues under the condition of a stable Higgs vacuum, which allows to extend the SM up to the Planck length. The bare Higgs boson mass then changes sign below the Planck scale, such the the SM in the early universe is in the symmetric phase. The cut-off enhanced Higgs mass term as well as the quartically enhanced cosmological constant term trigger the inflation of the early universe. The coefficients of the shift between bare and renormalized Higgs mass as well as of the shift between bare and renormalized vacuum energy density exhibit close-by zeros at some point below the Planck scale. The zeros are matching points between short distance and the renormalized low energy quantities. Since inflation tunes the total energy density to take the critical value of a flat universe Omega_tot=rho_tot/rho_crit=Omega_Lambda+Omega_matter+Omega_radiation}=1 it is obvious that Omega_Lambda today is of order Omega_tot given that 1>Omega_matter, Omega_radiation>0, which saturate the total density to about 26 % only, the dominant part being dark matter(21 %).
Towards the million body problem on the computer - no news since the three-body problem?
R. Spurzem; A. Kugel
1999-06-08
Astrophysical Challenges which demand the solution of the one million (or more) gravitating body problem are briefly discussed for the fields of cosmology, galactic nuclei and globular star clusters. Results from the classical three-body problem are to be combined with methods of statistical mechanics or thermodynamics in order to provide a reasonable model for astrophysically relevant particle numbers of the order 10**4-10**8. For high-precision modelling of star clusters and galactic nuclei over the required hundreds and thousands of crossing times specially tailored ``brute-force'' N-body integration methods are used together with special purpose hardware. A recent implementation of such code on a general purpose parallel computer is presented. After a comparison of the relevance of different N-body algorithms a new concept for a more flexible customized special purpose computer based on a combination of GRAPE and FPGA is proposed. It is an ideal machine for all kinds of N-body simulations using neighbour schemes, as the Ahmad-Cohen direct N-body codes and smoothed particle hydrodynamics (SPH) for systems including interstellar gas dynamics.
Hammond, Charles Florian
2010-01-01
school-age students do problem solving, the current studyshop enhance students‘ problem solving capacity? Does itacting while engaged in problem solving in the educational
Ward, Renate; Ward, Renate
2012-01-01
useful for analyzing a problem and solving it successfully.mathematic problem solving for low- achieving students.on the mathematical problem solving of middle school student
Assessing Student Performance in Solving Complex Physics Problems
Gustafsson, Torgny
the problem statement to find the general physics principles that apply, write the equations that follow fromAssessing Student Performance in Solving Complex Physics Problems C.W. Liew Department of Computer Department of Physics and Astronomy Rutgers University Piscataway, NJ 08854-8019 shapiro@physics
On the solution of palindromic eigenvalue problems Andreas Hilliges
Mehl, Christian
the vibration of rail tracks under the excitation arising from high speed trains. This eigenvalue problem has traffic that is caused by high speed trains. Therefore, the vibration of an infinite rail track analysis of rail tracks under periodic excitation is investigated. This eigenvalue problem is a special
APPROXIMATION OF A TWOPHASE CONTINUOUS CASTING STEFAN PROBLEM
APPROXIMATION OF A TWOPHASE CONTINUOUS CASTING STEFAN PROBLEM Zhiming Chen \\Lambda Lishang Jiang y Abstract. The continuous casting Stefan problem is a mathematical model describing the solidification with convection of a material being cast continuously with a prescribed velocity. We propose a practical piecewise
Motivation and Problem Formulation Sparse recon. with partially known support
Vaswani, Namrata
Motivation and Problem Formulation Sparse recon. with partially known support Details Summary://www.ece.iastate.edu/namrata Namrata Vaswani Recursive Causal Sparse Reconstruction 1/ 53 #12;Motivation and Problem Formulation Sparse recon. with partially known support Details Summary, Ongoing Work and Open Questions Motivation
Some inverse problems around the tokamak Tore Supra Yannick Fischer
Privat, Yannick
Some inverse problems around the tokamak Tore Supra Yannick Fischer Benjamin Marteau Yannick Privat§ Abstract We consider two inverse problems related to the tokamak Tore Supra through the study for thermonuclear fusion in a tokamak [12]. The second and the third authors are partially supported by the ANR
Quadratic Inverse Eigenvalue Problems, Active Vibration Control and Model Updating
Datta, Biswa
is an important practical problem that arises in a wide range of applications, including mechanical vibrations control (AVC) and finite element model updating (FEMU) in mechanical vibration. The active vibrationQuadratic Inverse Eigenvalue Problems, Active Vibration Control and Model Updating Biswa N. Datta,1
A convergent adaptive method for elliptic eigenvalue problems
problems, nuclear reactor criticality and the modelling of photonic band gap materials, to name but three the computed eigenfunction has high oscillation. The error analysis extends the theory of convergence eigenfunction. (Measures of "data oscillation" appear in the theory of adpativity for boundary value problems (e
An inverse random source problem for the Helmholtz equation
Gang Bao; Shui-Nee Chow; Peijun Li; Haomin Zhou
2013-10-25
Jun 10, 2013 ... use electric or magnetic measurements on the surface of the human body, such as the head, to infer the source currents inside of the body, such as the brain, that .... for the solution of the boundary value problem, which allows us to ... analysis for the direct and inverse source scattering problems in the rest ...
High Order Finite Element Solution of Elastohydrodynamic Lubrication Problems
Jimack, Peter
High Order Finite Element Solution of Elastohydrodynamic Lubrication Problems by Hongqiang Lu-dimensional Elastohydro- dynamic Lubrication (EHL) problems (line contact and point contact). This thesis pro- vides an introduction to elastohydrodynamic lubrication, including some history, and a description of the underlying
Expected Approximation Guarantees for the Demand Matching Problem
Boucher, Christina
Expected Approximation Guarantees for the Demand Matching Problem C. Boucher D. Loker September 2006 Abstract The objective of the demand matching problem is to obtain the subset M of edges which if for each vertex v the total demand of edges in M incident to v is at most bv. In the case where each
ON SOLAR NEUTRINO PROBLEM TIAN MA AND SHOUHONG WANG
ON SOLAR NEUTRINO PROBLEM TIAN MA AND SHOUHONG WANG Abstract. The current neutrino oscillation an alternative resolution to the solar neutrino loss problem. Contents 1. Introduction 1 2. Discrepancy of Solar, there are three flavors of neutrinos: the electron neutrino e, the tau neutrino and the mu neutrino µ. The solar
ADAPTIVE FINITE ELEMENT FREQUENCY DOMAIN METHOD FOR EDDY CURRENT PROBLEMS
Zheng, Weiying
ADAPTIVE FINITE ELEMENT FREQUENCY DOMAIN METHOD FOR EDDY CURRENT PROBLEMS WEIYING ZHENG-harmonic eddy current problems in the case of three-dimensional isotropic and linear materials. We adopt. Time-harmonic Maxwell's equations, eddy current, adaptive finite element method, multiply connected
Corner singularities of Maxwell interface and eddy current problems
Costabel, Martin
Corner singularities of Maxwell interface and eddy current problems Martin Costabel, Monique Dauge permittivity/conductivity tends to zero (the eddy current limit). Corner singularities of the Maxwell transmission problem and also of the eddy current model have been described elsewhere [6, 7]. Here we
Designing Annotation Tools based on Properties of Annotation Problems.
Theune, Mariët
Designing Annotation Tools based on Properties of Annotation Problems. Dennis Reidsma Nata-consuming task. Sup- port from tools to create annotations is indispensable. This paper argues that annotation tools should be focused on specific classes of annotation problems to make the annotation process more
Using Genetic Algorithms for Solving Hard Problems in GIS
Utrecht, Universiteit
Using Genetic Algorithms for Solving Hard Problems in GIS Steven van Dijk Dirk Thierens Mark de in Geographical Information Systems (GIS's). The framework is especially suited for geographical problems since as well. 1 Introduction Geographic Information Systems (GIS's for short) combine a geographical database
SOLUTION OF A GROUNDWATER CONTROL PROBLEM WITH IMPLICIT FILTERING \\Lambda
to a control problem from hydrology. We seek to control the temperature at a group of drinking water wells to control the temperature in a set of drinking water wells. The site shown in Figure 2.1 is in the rechargeSOLUTION OF A GROUNDWATER CONTROL PROBLEM WITH IMPLICIT FILTERING \\Lambda A. BATTERMANN y , J. M
SOLUTION OF A GROUNDWATER CONTROL PROBLEM WITH IMPLICIT A. BATTERMANN
to a control problem from hydrology. We seek to control the temperature at a group of drinking water wells to control the temperature in a set of drinking water wells. The site shown in Figure 2.1 is in the rechargeSOLUTION OF A GROUNDWATER CONTROL PROBLEM WITH IMPLICIT FILTERING A. BATTERMANN Â¡ , J. M
PLASTIC TORSION AND RELATED PROBLEMS FRANCOIS ALOUGES AND ANTONIO DESIMONE
Alouges, FranÃ§ois
PLASTIC TORSION AND RELATED PROBLEMS FRANCÂ¸OIS ALOUGES AND ANTONIO DESIMONE Abstract. A simple buckling of thin film blisters are also discussed. 1. Introduction A classical problem in Plasticity (more of Matlab code provided herein will entice many to experiment with plastic torsional loads, isotropic thin
The LCA Problem Revisited Michael A. Bender1
California at Davis, University of
The LCA Problem Revisited Michael A. Bender1 and Mart´in Farach-Colton2 1 Department of Computer the frequently held notion that opti- mal LCA computation is unwieldy and unimplementable. Interestingly fundamental algorithmic problems on trees is how to find the Least Common Ancestor (LCA) of a pair of nodes
Approximation Algorithms for Multi-criteria Traveling Salesman Problems
Al Hanbali, Ahmad
+3-42 +, respectively. Moreover, we design ran- domized approximation algorithms for multi-criteria () -ATSP (ratio 1 2. Therefore, we design randomized approximation schemes for multi-criteria cycle cover problems by showingApproximation Algorithms for Multi-criteria Traveling Salesman Problems Bodo Manthey1 and L
Solution of Large Eigenvalue Problems in Electronic Structure Calculations \\Lambda
Stathopoulos, Andreas
Solution of Large Eigenvalue Problems in Electronic Structure Calculations \\Lambda Y. Saad y , A the structural and electronic properties of complex systems is one of the outstanding problems in condensed external perturbations. For example, it may be desirable in certain cases to follow the dynamics of atoms/electrons
THE FUKUSHIMA INVERSE PROBLEM Marta Martinez-Camara, Ivan Dokmanic,
Vetterli, Martin
THE FUKUSHIMA INVERSE PROBLEM Marta Martinez-Camara, Ivan Dokmani´c, Juri Ranieri, Robin Scheibler material was released from Fukushima in March 2011 is crucial to understand the scope of the consequences regular- ization that solves the Fukushima inverse problem blindly. Together with the atmospheric
Stability for a transmission problem in thermoelasticity with second sound
Racke, Reinhard
Stability for a transmission problem in thermoelasticity with second sound Hugo D. FernÂ´andez Sare, Jaime E. Mu~noz Rivera and Reinhard Racke Abstract: We consider a semilinear transmission problem for a coupling of an elastic and a thermoelastic material. The heat conduction is modeled by Cattaneo's law
March 2, 2015 Lecture 9 Least Square Problems
Sleijpen, Gerard
-inverse of A. In particular, the minimal norm minimal residual solution exists. (d) Damped least squares: b to the ones of the original matrix? (b) Explain why the damped least squares problem is less sensitive to noise. (c) The error in x in the damped least square problem (with noise on b) has two components, one
Errors-in-variables problems in transient electromagnetic mineral exploration
Braslavsky, Julio H.
Errors-in-variables problems in transient electromagnetic mineral exploration K. Lau, J. H in transient electromagnetic mineral exploration. A specific sub-problem of interest in this area geological surveys, dia- mond drilling, and airborne mineral exploration. Our interest here is with ground
Hermitian Quadratic Matrix Polynomials: Solvents and Inverse Problems
Tisseur, Francoise
Hermitian Quadratic Matrix Polynomials: Solvents and Inverse Problems Peter Lancaster and Fran ISSN 1749-9097 #12;Hermitian Quadratic Matrix Polynomials: Solvents and Inverse Problems$ Peter with prescribed spectral data (eigenvalues and eigenvectors) it is natural to prescribe a right solvent
TimeAsymptotic Limit of Solutions of a Combustion Problem
Ferguson, Thomas S.
TimeÂAsymptotic Limit of Solutions of a Combustion Problem Tong Li Department of Mathematics University of California, Los Angeles Department of Mathematics University of Iowa Abstract. A combustion, 35B50, 76L05, 76J10. 1 Introduction We consider the combustion problem u t + ( 1 2 u 2 \\Gamma qz) x
An Unstable Elliptic Free Boundary Problem arising in Solid Combustion
Monneau, RÃ©gis
An Unstable Elliptic Free Boundary Problem arising in Solid Combustion R. Monneau Ecole Nationale in solid combustion. The maximal solution and every local minimizer of the energy are regular, that is, {u combustion, singularity, unstable problem, Aleksandrov reflection, unique blow-up limit, second variation
TOPOLOGICAL ASYMPTOTIC ANALYSIS OF THE KIRCHHOFF PLATE BENDING PROBLEM
Samuel, Amstutz
. The paper is organized as follows. Section 2 describes the model associated to the Kirchhoff plate bendingTOPOLOGICAL ASYMPTOTIC ANALYSIS OF THE KIRCHHOFF PLATE BENDING PROBLEM S. AMSTUTZ AND A.A. NOVOTNY associated to the Kirchhoff plate bending problem, when a circular inclusion is introduced at an arbitrary
An inverse dynamical problem for connected beams A. Morassi
Ikegami, Takashi
place between longitudinal and bending motions. In this paper, we neglect bending motions and we only Abstract This paper deals with a dynamical inverse problem for a composite beam formed by two connected In this paper we address the following problem of nondestructive testing: To determine, in a steel
ANDREA BRAIDES Multi-scale Problems for Lattice Systems
Braides, Andrea
ANDREA BRAIDES Multi-scale Problems for Lattice Systems Multi-scale Problems in Sustainable Resource Management The Royal Netherlands Academy of Arts and Sciences September 9, 2010 A.Braides: Multi. -convergence for Beginners, OUP 2002 B. Handbook of -convergence (Handbook of Diff. Eqns, Elsevier, 2006) A
Scenario Reduction and Scenario Tree Construction for Power Management Problems
RÃ¶misch, Werner
1 Scenario Reduction and Scenario Tree Construction for Power Management Problems Nicole GrÂ¨owe-Kuska, Holger Heitsch and Werner RÂ¨omisch Abstract-- Portfolio and risk management problems of power utilities and corresponding probabilities to model the multivariate random data process (electrical load, stream flows
Short Communication Similarity considerations in adhesive contact problems
Awtar, Shorya
Short Communication Similarity considerations in adhesive contact problems J.R. Barber n Department online 4 July 2013 Keywords: Adhesion van der Waal's forces Similarity JKR theory a b s t r a c of the adhesive force law. & 2013 Elsevier Ltd. All rights reserved. 1. Introduction Contact problems involving
Onesided Block Jacobi Methods for the Symmetric Eigenvalue Problem ?
GimÃ©nez, Domingo
OneÂsided Block Jacobi Methods for the Symmetric Eigenvalue Problem ? D. Gim'enez 1 , J. Cuenca 1 theoretically two different oneÂsided block Jacobi algorithms for solving the Symmetric Eigenvalue Problem. Sequential and parallel versions of the algorithms are analized and comÂ pared with a twoÂsided block Jacobi
Integrated network design and scheduling problems : optimization algorithms and applications.
Nurre, Sarah G.; Carlson, Jeffrey J.
2014-01-01
We consider the class of integrated network design and scheduling problems. These problems focus on selecting and scheduling operations that will change the characteristics of a network, while being speci cally concerned with the performance of the network over time. Motivating applications of INDS problems include infrastructure restoration after extreme events and building humanitarian distribution supply chains. While similar models have been proposed, no one has performed an extensive review of INDS problems from their complexity, network and scheduling characteristics, information, and solution methods. We examine INDS problems under a parallel identical machine scheduling environment where the performance of the network is evaluated by solving classic network optimization problems. We classify that all considered INDS problems as NP-Hard and propose a novel heuristic dispatching rule algorithm that selects and schedules sets of arcs based on their interactions in the network. We present computational analysis based on realistic data sets representing the infrastructures of coastal New Hanover County, North Carolina, lower Manhattan, New York, and a realistic arti cial community CLARC County. These tests demonstrate the importance of a dispatching rule to arrive at near-optimal solutions during real-time decision making activities. We extend INDS problems to incorporate release dates which represent the earliest an operation can be performed and exible release dates through the introduction of specialized machine(s) that can perform work to move the release date earlier in time. An online optimization setting is explored where the release date of a component is not known.
The Coverage Problem in Three-Dimensional Wireless Sensor Networks
Tseng, Yu-Chee
- bedded micro-sensing MEMS technologies has made wireless sensor networks possible. Such environments mayThe Coverage Problem in Three-Dimensional Wireless Sensor Networks Chi-Fu Huang, Yu-Chee Tseng of the fundamental issues in sensor networks is the coverage problem, which reflects how well a sensor network
Non-uniqueness problem in estimating original gas in place
El-Ahmady, Mohamed Hamed
2000-01-01
This thesis demonstrates the problem of non-uniqueness in estimating Original Gas in Place of gas reservoirs using the material balance technique. The presence of this non-uniqueness problem can cause an overestimation of the Original Gas in Place...
A Wave Analysis of the Subset Sum Problem Mark Jelasity
Jelasity, Márk
A Wave Analysis of the Subset Sum Problem M´ark Jelasity Research Group of Artificial Intelligence the wave model, a novel approach on analyzing the behavior of GAs. Our aim is to give techniques that have and effective heuristics on certain problem classes. The wave analysis is the process of building wave models
A Dual Method for the Unit Commitment Problem
Römisch, Werner
A Dual Method for the Unit Commitment Problem A. Moller and W. Romisch Humboldt{Universitat Berlin on Lagrangian relaxation and uses a bundle method for solving the nonsmooth dual problem. Computational results and SUCi denote the fuel costs (as a quadratic function of pt i), the keeping hot costs, the start up costs
Reactive Stochastic Local Search Algorithms for the Genomic Median Problem
Wolf, Christian
Reactive Stochastic Local Search Algorithms for the Genomic Median Problem Renaud Lenne1 5558, UniversitÂ´e de Lyon 1, France eric.tannier@inria.fr Abstract. The genomic median problem of the common ancestor to multiple living species. It is formulated as the search for a genome that minimizes
Numerical solution of an inverse medium scattering problem for ...
"Gang Bao; Peijun Li"
2009-04-24
Apr 1, 2009 ... for Maxwell's Equations at fixed frequency ... family of plane waves by solving one direct problem and one adjoint problem of the Max- ...... We use a simple and effective mesh generator in MATLAB by .... [15] D. Colton, J. Coyle, P. Monk, Recent development in inverse acoustic scattering theory, SIAM Rev.