WorldWideScience

Sample records for renovation flow verification

  1. Mean-field dynamo action in renovating shearing flows.

    Science.gov (United States)

    Kolekar, Sanved; Subramanian, Kandaswamy; Sridhar, S

    2012-08-01

    We study mean-field dynamo action in renovating flows with finite and nonzero correlation time (τ) in the presence of shear. Previous results obtained when shear was absent are generalized to the case with shear. The question of whether the mean magnetic field can grow in the presence of shear and nonhelical turbulence, as seen in numerical simulations, is examined. We show in a general manner that, if the motions are strictly nonhelical, then such mean-field dynamo action is not possible. This result is not limited to low (fluid or magnetic) Reynolds numbers nor does it use any closure approximation; it only assumes that the flow renovates itself after each time interval τ. Specifying to a particular form of the renovating flow with helicity, we recover the standard dispersion relation of the α(2)Ω dynamo, in the small τ or large wavelength limit. Thus mean fields grow even in the presence of rapidly growing fluctuations, surprisingly, in a manner predicted by the standard quasilinear closure, even though such a closure is not strictly justified. Our work also suggests the possibility of obtaining mean-field dynamo growth in the presence of helicity fluctuations, although having a coherent helicity will be more efficient.

  2. ECCS flow verification to support transient analysis

    Energy Technology Data Exchange (ETDEWEB)

    Kovach, C.; Jacobs, R.H.; Ballard, J.E. [Commonwealth Edison Co., Chicago, IL (United States). Nuclear Fuel Services Dept.

    1994-12-31

    The RETRAN code has been used to develop a model of the Emergency Core Cooling System (ECCS). The model was developed in order to provide conservative injection flow data to be used in various LOCA and non-LOCA analyses and evaluations and to ensure that ECCS pump runout does not occur. The analyses were also needed in order to address a number of ECCS performance issues identified by Westinghouse. These issues include how previous analyses modeled miniflow, RCP seal injection, ECCS branch line resistance, pump suction boost during recirculation, injection line flow imbalances, and, of particular importance, ECCS flow measurement inaccuracies. In turn, these issues directly impact pump runout concerns, Technical Specification verification, and ECCS injection flow during transient conditions. The RETRAN ECCS model has proven to be quite versatile, easy to use, and requires only minimal information about the physical construction and performance of the ECCS system.

  3. Systematic study of source mask optimization and verification flows

    Science.gov (United States)

    Ben, Yu; Latypov, Azat; Chua, Gek Soon; Zou, Yi

    2012-06-01

    Source mask optimization (SMO) emerged as powerful resolution enhancement technique (RET) for advanced technology nodes. However, there is a plethora of flow and verification metrics in the field, confounding the end user of the technique. Systemic study of different flows and the possible unification thereof is missing. This contribution is intended to reveal the pros and cons of different SMO approaches and verification metrics, understand the commonality and difference, and provide a generic guideline for RET selection via SMO. The paper discusses 3 different type of variations commonly arise in SMO, namely pattern preparation & selection, availability of relevant OPC recipe for freeform source and finally the metrics used in source verification. Several pattern selection algorithms are compared and advantages of systematic pattern selection algorithms are discussed. In the absence of a full resist model for SMO, alternative SMO flow without full resist model is reviewed. Preferred verification flow with quality metrics of DOF and MEEF is examined.

  4. 76 FR 27044 - Lead-Based Paint Renovation, Repair and Painting, and Pre-Renovation Education Activities in...

    Science.gov (United States)

    2011-05-10

    ... on standard disks in Microsoft Word or ASCII file format. Instructions: Direct your comments to... transporting of waste. Final visual inspection and post renovation cleaning verification using...

  5. 75 FR 6383 - Lead-Based Paint Renovation, Repair and Painting, and Pre-Renovation Education Activities in...

    Science.gov (United States)

    2010-02-09

    ... accepted on standard disks in Microsoft Word or ASCII file format. D. How Should I Handle CBI Information... visual inspection and post renovation cleaning verification using prescribed protocol....

  6. Toward Automatic Verification of Goal-Oriented Flow Simulations

    Science.gov (United States)

    Nemec, Marian; Aftosmis, Michael J.

    2014-01-01

    We demonstrate the power of adaptive mesh refinement with adjoint-based error estimates in verification of simulations governed by the steady Euler equations. The flow equations are discretized using a finite volume scheme on a Cartesian mesh with cut cells at the wall boundaries. The discretization error in selected simulation outputs is estimated using the method of adjoint-weighted residuals. Practical aspects of the implementation are emphasized, particularly in the formulation of the refinement criterion and the mesh adaptation strategy. Following a thorough code verification example, we demonstrate simulation verification of two- and three-dimensional problems. These involve an airfoil performance database, a pressure signature of a body in supersonic flow and a launch abort with strong jet interactions. The results show reliable estimates and automatic control of discretization error in all simulations at an affordable computational cost. Moreover, the approach remains effective even when theoretical assumptions, e.g., steady-state and solution smoothness, are relaxed.

  7. Evaluation of Investment in Renovation to Increase the Quality of Buildings: A Specific Discounted Cash Flow (DCF Approach of Appraisal

    Directory of Open Access Journals (Sweden)

    Giuseppe Bonazzi

    2016-03-01

    Full Text Available The objective of this article is to develop and apply a specific discounting cash flow (DCF approach to evaluate investment in renovation to improve building quality, thus increasing energy efficiency. In this article, we develop and apply a specific net present value (NPV and an internal rate of return (IRR approach to quantify the value created for the owners of the building by the investment in renovation via energy-saving investments that produce positive externalities. The model has an applied interest because, in recent years, a lot of investments in real estate were made by owners in order to increase the green quality of the buildings, and several funds of public aid were provided by the government to stimulate these energy-saving investments. The model proposed here is applied to a case study of a 16-apartment building located in northern Italy considers the model attempts to quantify the initial investment value, the energy savings, the tax deduction of the initial investment and the terminal value of the investment as the increase in building value. The analysis shows that the model is consistent in evaluating investments to improve building quality, and investments within the context of the specific case study considered in the research have IRRs ranging from a minimum of 4.907% to a maximum of 12.980%. It could even be useful to consider a sample of cases to verify whether our results are representative of this specific case study. The model could represent a useful tool for consumers in evaluating their own investments in building renovation, from a stand-alone perspective and even by comparing them with other types of investment. The research could be developed in the future to quantify the social welfare generated by public spending via tax deductions to reduce the costs of investment in energy savings for buildings and could even be applied to new real estate projects in comparing different construction technologies and even

  8. Quantitative Information Flow - Verification Hardness and Possibilities

    CERN Document Server

    Yasuoka, Hirotoshi

    2010-01-01

    Researchers have proposed formal definitions of quantitative information flow based on information theoretic notions such as the Shannon entropy, the min entropy, the guessing entropy, and channel capacity. This paper investigates the hardness and possibilities of precisely checking and inferring quantitative information flow according to such definitions. We prove that, even for just comparing two programs on which has the larger flow, none of the definitions is a k-safety property for any k, and therefore is not amenable to the self-composition technique that has been successfully applied to precisely checking non-interference. We also show a complexity theoretic gap with non-interference by proving that, for loop-free boolean programs whose non-interference is coNP-complete, the comparison problem is #P-hard for all of the definitions. For positive results, we show that universally quantifying the distribution in the comparison problem, that is, comparing two programs according to the entropy based definit...

  9. Design verification and cold-flow modeling test report

    Energy Technology Data Exchange (ETDEWEB)

    1993-07-01

    This report presents a compilation of the following three test reports prepared by TRW for Alaska Industrial Development and Export Authority (AIDEA) as part of the Healy Clean Coal Project, Phase 1 Design of the TRW Combustor and Auxiliary Systems, which is co-sponsored by the Department of Energy under the Clean Coal Technology 3 Program: (1) Design Verification Test Report, dated April 1993, (2) Combustor Cold Flow Model Report, dated August 28, 1992, (3) Coal Feed System Cold Flow Model Report, October 28, 1992. In this compilation, these three reports are included in one volume consisting of three parts, and TRW proprietary information has been excluded.

  10. Verification and Validation of the Coastal Modeling System. Report 3: CMS-Flow: Hydrodynamics

    Science.gov (United States)

    2011-12-01

    ER D C/ CH L TR -1 1- 10 Verification and Validation of the Coastal Modeling System Report 3, CMS -Flow: Hydrodynamics Co as ta l a nd...11-10 December 2011 Verification and Validation of the Coastal Modeling System Report 3, CMS -Flow: Hydrodynamics Alejandro Sánchez, Weiming Wu...of four reports toward the Verification and Validation (V&V) of the Coastal Modeling System ( CMS ). The details of the V&V study specific to the

  11. Verification of the karst flow model under laboratory controlled conditions

    Science.gov (United States)

    Gotovac, Hrvoje; Andric, Ivo; Malenica, Luka; Srzic, Veljko

    2016-04-01

    Karst aquifers are very important groundwater resources around the world as well as in coastal part of Croatia. They consist of extremely complex structure defining by slow and laminar porous medium and small fissures and usually fast turbulent conduits/karst channels. Except simple lumped hydrological models that ignore high karst heterogeneity, full hydraulic (distributive) models have been developed exclusively by conventional finite element and finite volume elements considering complete karst heterogeneity structure that improves our understanding of complex processes in karst. Groundwater flow modeling in complex karst aquifers are faced by many difficulties such as a lack of heterogeneity knowledge (especially conduits), resolution of different spatial/temporal scales, connectivity between matrix and conduits, setting of appropriate boundary conditions and many others. Particular problem of karst flow modeling is verification of distributive models under real aquifer conditions due to lack of above-mentioned information. Therefore, we will show here possibility to verify karst flow models under the laboratory controlled conditions. Special 3-D karst flow model (5.6*2.6*2 m) consists of concrete construction, rainfall platform, 74 piezometers, 2 reservoirs and other supply equipment. Model is filled by fine sand (3-D porous matrix) and drainage plastic pipes (1-D conduits). This model enables knowledge of full heterogeneity structure including position of different sand layers as well as conduits location and geometry. Moreover, we know geometry of conduits perforation that enable analysis of interaction between matrix and conduits. In addition, pressure and precipitation distribution and discharge flow rates from both phases can be measured very accurately. These possibilities are not present in real sites what this model makes much more useful for karst flow modeling. Many experiments were performed under different controlled conditions such as different

  12. Verification of Information Flow in Agent-Based Systems

    Science.gov (United States)

    Sabri, Khair Eddin; Khedri, Ridha; Jaskolka, Jason

    Analyzing information flow is beneficial for ensuring the satisfiability of security policies during the exchange of information between the agents of a system. In the literature, models such as Bell-LaPadula model and the Chinese Wall model are proposed to capture and govern the exchange of information among agents. Also, we find several verification techniques for analyzing information flow within programs or multi-agent systems. However, these models and techniques assume the atomicity of the exchanged information, which means that the information cannot be decomposed or combined with other pieces of information. Also, the policies of their models prohibit any transfer of information from a high level agent to a low level agent. In this paper, we propose a technique that relaxes these assumptions. Indeed, the proposed technique allows classifying information into frames and articulating finer granularity policies that involve information, its elements, or its frames. Also, it allows for information manipulation through several operations such as focusing and combining information. Relaxing the atomicity of information assumption permits an analysis that takes into account the ability of an agent to link elements of information in order to evolve its knowledge.

  13. Verification of Wegelin\\'s design criteria for horizontal flow roughing ...

    African Journals Online (AJOL)

    Verification of Wegelin\\'s design criteria for horizontal flow roughing filters (HRFs) with alternative filter material. ... This study aimed at verifying these criteria based on gravel as a filter medium and two other possible ... Article Metrics.

  14. The Integrated Renovation Process

    DEFF Research Database (Denmark)

    Galiotto, Nicolas; Heiselberg, Per; Knudstrup, Mary-Ann

    The Integrated Renovation Process (IRP) is a user customized methodology based on judiciously selected constructivist and interactive multi-criteria decision making methods (Galiotto, Heiselberg, & Knudstrup, 2014 (expected)). When applied for home renovation, the Integrated Renovation Process...... for the quantitative analyses and the generation of the renovation scenarios so they get more time for the cost optimisation and the qualitative analysis of the homeowners’ needs, wishes and behaviours....

  15. Solar renovation demonstration projects

    Energy Technology Data Exchange (ETDEWEB)

    Bruun Joergensen, O. [ed.

    1998-10-01

    In the framework of the IEA SHC Programme, a Task on building renovation was initiated, `Task 20, Solar Energy in Building Renovation`. In a part of the task, Subtask C `Design of Solar Renovation Projects`, different solar renovation demonstration projects were developed. The objective of Subtask C was to demonstrate the application of advanced solar renovation concepts on real buildings. This report documents 16 different solar renovation demonstration projects including the design processes of the projects. The projects include the renovation of houses, schools, laboratories, and factories. Several solar techniques were used: building integrated solar collectors, glazed balconies, ventilated solar walls, transparent insulation, second skin facades, daylight elements and photovoltaic systems. These techniques are used in several simple as well as more complex system designs. (au)

  16. The Integrated Renovation Process

    DEFF Research Database (Denmark)

    Galiotto, Nicolas

    and constructivist multiple criteria decision-making analysis method is selected for developing the work further. The method is introduced and applied to the renovation of a multi-residential historic building. Furthermore, a new scheme, the Integrated Renovation Process, is presented. Finally, the methodology....... In this thesis, examples of nearly zero energy single-family home renovations are presented. The most relevant existing decision support methods and tools applicable to sustainable renovation processes are reviewed and their applicability to high performance sustainable renovation is discussed. A qualitative...... performance sustainable renovations. The main purpose of the work has been to develop a holistic methodology so as to inspire and guide building owners and their renovation project teams to reach high levels of social, environmental and economic performances. The research approach integrates multiple...

  17. Renovation of social housing

    DEFF Research Database (Denmark)

    Jensen, Stina Rask; Hvejsel, Marie Frier; Kirkegaard, Poul Henning

    an understanding of the built environment as a spatial continuum that is in constant alteration. When we engage in the renovation of a building, we inevitably enter into a dialogue with this continuum. The motivation to alter an existing building may be decay and change in the use, or, as has been the case...... in the renovation of social housing. Methodologically, this hypothesis is investigated by re-reading the task of energy renovation through the lens of tectonic architectural theory. Specifically, Eduard Sekler’s etymological distinction between structure, construction, and tectonics is developed as a framework...... for addressing the spatial implications and potentials of technical initiatives in contemporary energy renovations within the continuum described by Scott. The framework is applied in two case studies of recent energy renovations of social housing dwellings. Finally, the paper discusses whether the technical...

  18. The Integrated Renovation Process

    DEFF Research Database (Denmark)

    Galiotto, Nicolas; Heiselberg, Per; Knudstrup, Mary-Ann

    2015-01-01

    the project stakeholders to overcome most informational barriers to sustainable home renovation such as lack of knowledge, lack of interest, lack of support, and lack of social and emotional understanding. The homeowners were able to perceive the new and numerous qualities they were getting in their newly......The potential for primary energy savings is greatest in the building sector. A very relevant way to save energy is to increase the rates and depths of building renovations. In order to reach such goals, building owners need to be convinced to invest in high-performance sustainable renovation...

  19. The Integrated Renovation Process

    DEFF Research Database (Denmark)

    Galiotto, Nicolas; Heiselberg, Per; Knudstrup, Mary-Ann

    The Integrated Renovation Process (IRP) is a user customized methodology based on judiciously selected constructivist and interactive multi-criteria decision making methods (Galiotto, Heiselberg, & Knudstrup, 2014 (expected)). The IRP supports, informs and reassures building owners to decide...... they get more time for the cost optimization and the qualitative analysis of the users’ needs and behaviours. In order to reach a fossil free energy building stock within an acceptable time frame, it is primordial that researchers, politicians and the building industry work hand in hand. Indeed, in order...... to overcome the financial barriers to energy renovation and bring a new type of building experts in the building renovation sector, cost optimization tools for building renovation have been and can be developed but new legislation and politico-economic supports are still much needed. We present in this report...

  20. The experimental verification of a streamline curvature numerical analysis method applied to the flow through an axial flow fan

    Science.gov (United States)

    Pierzga, M. J.

    1981-01-01

    The experimental verification of an inviscid, incompressible through-flow analysis method is presented. The primary component of this method is an axisymmetric streamline curvature technique which is used to compute the hub-to-tip flow field of a given turbomachine. To analyze the flow field in the blade-to-blade plane of the machine, the potential flow solution of an infinite cascade of airfoils is also computed using a source model technique. To verify the accuracy of such an analysis method an extensive experimental verification investigation was conducted using an axial flow research fan. Detailed surveys of the blade-free regions of the machine along with intra-blade surveys using rotating pressure sensing probes and blade surface static pressure taps provide a one-to-one relationship between measured and predicted data. The results of this investigation indicate the ability of this inviscid analysis method to predict the design flow field of the axial flow fan test rotor to within a few percent of the measured values.

  1. Integrated Renovation Process

    DEFF Research Database (Denmark)

    Galiotto, Nicolas; Heiselberg, Per; Knudstrup, Mary-Ann

    2016-01-01

    structured and holistic method of decision making toward nearly zero-energy building renovation. The methodology is evolutive, implementable on a large scale, and allows an optimal integration of nonexpert decision makers. In practice, such a scheme allowed most behavioral barriers to sustainable home...... renovation to be overcome. The homeowners were better integrated and their preferences and immaterial values were better taken into account. To keep the decision-making process economically viable and timely, the process as known today still needs to be improved, and new tools need to be developed...

  2. Experimental verification of the streamline curvature numerical analysis method applied to the flow through an axial flow fan

    Science.gov (United States)

    Pierzga, M. J.

    1980-05-01

    To verify the results of a streamline curvature numerical analysis method, an investigation has been conducted in which comparisons are made between analytical and experimental data of an axial flow fan. Using loss model calculations to determine the proper outlet flow deviation angles, the flow field in the hub to tip plane of the turbomachine was calculated. These deviation angle calculations allow the inviscid streamline curvature (SLC) analysis to model a real fluid with viscous losses. The verification of this calculated flow field is the primary objective of the investigation; however, in addition to the hub to tip flow field, the numerical analysis of the blade-to-blade flow field was also investigated in some detail. To verify the accuracy of the numerical results, detailed flow surveys were conducted upstream and downstream of the test rotor of the axial flow fan. To obtain the necessary data to verify the blade-to-blade solution, internal blade row data were also collected. The internal blade row measurements were obtained by using a rotating circumferential traversing mechanism which was designed and implemented during this investigation. Along with these two sets of survey data, the static pressure distributions on the pressure and suction surfaces of the test rotor were also obtained.

  3. Existing Sustainable Renovation Concepts

    DEFF Research Database (Denmark)

    Tommerup, Henrik M.; Vanhoutteghem, Lies; Gustavsson, Leif

    there is a great need for full-service packages including consulting, contract work, follow-up, financing and operation and maintenance. There are few Nordic examples of such service models for renovation of single-family houses which entered the market recently. The success of these concepts is yet...

  4. Flow-units verification, using statistical zonation and application of Stratigraphic Modified Lorenz Plot in Tabnak

    Directory of Open Access Journals (Sweden)

    Seyed Kourosh Mahjour

    2016-06-01

    Full Text Available The relationship between two main reservoir parameters being porosity and permeability, in the carbonate rocks is very complex and obscure. To get a better understanding on flow behavior, the relationship of porosity and permeability of reservoir units, reservoir zonation and flow units were defined. The significance of dividing the sedimentary intervals into flow units reflects groups of rocks that have similar geologic, physical properties and depositional environment that affect fluid flow. Variations in rock properties result from depositional, diagenetic and post-depositional changes. A flow unit is a volume of a reservoir rock that is continuous laterally and vertically and has similar averages of those rock properties that affect fluid flow. Different methods exist for the zonation of reservoirs based on petrophysical data and well logs; among them are: Permeability–Porosity cross plot, Pickett and Soder and Gill methods. In this study, the flow units are determined in Tabnak gas field in South of Iran based on Testerman Zonation Technique and Stratigraphic Modified Lorenz Plot (SMLP methods. For determining these units, conflation of petrophysical data and comparing porosity and permeability of cores are done for verification three wells. By comparing flow-units derived from two methods, it was realized that in permeable zones they have a relatively valid correlation.

  5. ParFlow.RT: Development and Verification of a New Reactive Transport Model

    Science.gov (United States)

    Beisman, J. J., III

    2015-12-01

    In natural subsurface systems, total elemental fluxes are often heavily influenced by areas of disproportionately high reaction rates. These pockets of high reaction rates tend to occur at interfaces, such as the hyporheic zone, where a hydrologic flowpath converges with either a chemically distinct hydrologic flowpath or a reactive substrate. Understanding the affects that these highly reactive zones have on the behavior of shallow subsurface systems is integral to the accurate quantification of nutrient fluxes and biogeochemical cycling. Numerical simulations of these systems may be able to offer some insight. To that end, we have developed a new reactive transport model, ParFlow.RT, by coupling the parallel flow and transport code ParFlow with the geochemical engines of both PFLOTRAN and CrunchFlow. The coupling was accomplished via the Alquimia biogeochemistry API, which provides a unified interface to several geochemical codes and allows a relatively simple implementation of advanced geochemical functionality in flow and transport codes. This model uses an operator-splitting approach, where the transport and reaction steps are solved separately. Here, we present the details of this new model, and the results of verification simulations and biogeochemical cycling simulations of the DOE's East River field site outside of Gothic, CO.

  6. Code and Solution Verification of 3D Numerical Modeling of Flow in the Gust Erosion Chamber

    Science.gov (United States)

    Yuen, A.; Bombardelli, F. A.

    2014-12-01

    Erosion microcosms are devices commonly used to investigate the erosion and transport characteristics of sediments at the bed of rivers, lakes, or estuaries. In order to understand the results these devices provide, the bed shear stress and flow field need to be accurately described. In this research, the UMCES Gust Erosion Microcosm System (U-GEMS) is numerically modeled using Finite Volume Method. The primary aims are to simulate the bed shear stress distribution at the surface of the sediment core/bottom of the microcosm, and to validate the U-GEMS produces uniform bed shear stress at the bottom of the microcosm. The mathematical model equations are solved by on a Cartesian non-uniform grid. Multiple numerical runs were developed with different input conditions and configurations. Prior to developing the U-GEMS model, the General Moving Objects (GMO) model and different momentum algorithms in the code were verified. Code verification of these solvers was done via simulating the flow inside the top wall driven square cavity on different mesh sizes to obtain order of convergence. The GMO model was used to simulate the top wall in the top wall driven square cavity as well as the rotating disk in the U-GEMS. Components simulated with the GMO model were rigid bodies that could have any type of motion. In addition cross-verification was conducted as results were compared with numerical results by Ghia et al. (1982), and good agreement was found. Next, CFD results were validated by simulating the flow within the conventional microcosm system without suction and injection. Good agreement was found when the experimental results by Khalili et al. (2008) were compared. After the ability of the CFD solver was proved through the above code verification steps. The model was utilized to simulate the U-GEMS. The solution was verified via classic mesh convergence study on four consecutive mesh sizes, in addition to that Grid Convergence Index (GCI) was calculated and based on

  7. Implementation of the Fissile Mass Flow Monitor Source Verification and Confirmation

    Energy Technology Data Exchange (ETDEWEB)

    Uckan, Taner [ORNL; March-Leuba, Jose A [ORNL; Powell, Danny H [ORNL; Nelson, Dennis [Sandia National Laboratories (SNL); Radev, Radoslav [Lawrence Livermore National Laboratory (LLNL)

    2007-12-01

    This report presents the verification procedure for neutron sources installed in U.S. Department of Energy equipment used to measure fissile material flow. The Fissile Mass Flow Monitor (FMFM) equipment determines the {sup 235}U fissile mass flow of UF{sub 6} gas streams by using {sup 252}Cf neutron sources for fission activation of the UF{sub 6} gas and by measuring the fission products in the flow. The {sup 252}Cf sources in each FMFM are typically replaced every 2 to 3 years due to their relatively short half-life ({approx} 2.65 years). During installation of the new FMFM sources, the source identity and neutronic characteristics provided by the manufacturer are verified with the following equipment: (1) a remote-control video television (RCTV) camera monitoring system is used to confirm the source identity, and (2) a neutron detection system (NDS) is used for source-strength confirmation. Use of the RCTV and NDS permits remote monitoring of the source replacement process and eliminates unnecessary radiation exposure. The RCTV, NDS, and the confirmation process are described in detail in this report.

  8. A verification and validation of the new implementation of subcooled flow boiling in a CFD code

    Energy Technology Data Exchange (ETDEWEB)

    Braz Filho, Francisco A.; Ribeiro, Guilherme B.; Caldeira, Alexandre D., E-mail: fbraz@ieav.cta.br, E-mail: gbribeiro@ieav.cta.br, E-mail: alexdc@ieav.cta.br [Instituto de Estudos Avancados (IEAv), Sao Jose dos Campos, SP (Brazil). Divisao de Energia Nuclear

    2015-07-01

    Subcooled flow boiling in a heated channel occurs when the liquid bulk temperature is lower than the saturation temperature and the wall temperature is higher. FLUENT computational fluid dynamics code uses Eulerian Multiphase Model to analyze this phenomenon. In FLUENT previous versions, the heat transfer correlations and the source terms of the conservation equations were added to the model using User Defined Functions (UDFs). Currently, these models are among the options of the FLUENT without the need to use UDFs. The comparison of the FLUENT calculations with experimental data for the void fraction presented a wide range of variation in the results, with values from satisfactory to poor results. There was the same problem in the previous versions. The fit factors of the FLUENT that control condensation and boiling in the system can be used to improve the results. This study showed a strong need for verification and validation of these calculations, along with a sensitivity analysis of the main parameters. (author)

  9. Overheating assessment of energy renovations

    DEFF Research Database (Denmark)

    Psomas, Theofanis Ch.; Heiselberg, Per Kvols; Duer, Karsten

    2016-01-01

    In many post-occupancy studies of renovated houses elevated temperatures have been documented. This article presents in which situations overheating need to be addressed and which renovation measures are causing this need. The analysis contains representative houses from central and north Europe....

  10. Rebuilding instead of renovation?; Neubauen statt Sanieren?

    Energy Technology Data Exchange (ETDEWEB)

    Ott, W.; Seiler, B.; Kaufmann, Y. [Econcept AG, Zuerich (Switzerland); Binz, A.; Moosmann, A. [Fachhochschule beider Basel, Muttenz (Switzerland)

    2002-07-01

    This comprehensive final report for the Swiss Federal Office of Energy (SFOE) presents the results of a study that examined the question of building renewal in Switzerland - should one rebuild or renovate? The report first examines the age-profile of Swiss buildings, defines renewal strategies and ideas, looks at renewal cycles and, in the light of future renewal demands, describes scenarios for replacement with new buildings instead of carrying out total renovations. The housing owners and their methods of management for multiple-apartment housing are described and the various factors involved in making decisions on how to renovate are discussed from the technical, legal and fiscal points of view. The report goes on to examine the ecological and energy aspects of renewal, presenting figures on energy consumption and material flows. Building renewal is also discussed from the social and regional planning points of view. The report is concluded with a discussion on rebuilding or renewal that takes current renewal deficits, costs and social aspects into account and makes recommendations for further action. An appendix presents renewal case studies.

  11. Coupled groundwater flow and transport: 1. Verification of variable density flow and transport models

    Science.gov (United States)

    Kolditz, Olaf; Ratke, Rainer; Diersch, Hans-Jörg G.; Zielke, Werner

    This work examines variable density flow and corresponding solute transport in groundwater systems. Fluid dynamics of salty solutions with significant density variations are of increasing interest in many problems of subsurface hydrology. The mathematical model comprises a set of non-linear, coupled, partial differential equations to be solved for pressure/hydraulic head and mass fraction/concentration of the solute component. The governing equations and underlying assumptions are developed and discussed. The equation of solute mass conservation is formulated in terms of mass fraction and mass concentration. Different levels of the approximation of density variations in the mass balance equations are used for convection problems (e.g. the Boussinesq approximation and its extension, fully density approximation). The impact of these simplifications is studied by use of numerical modelling. Numerical models for nonlinear problems, such as density-driven convection, must be carefully verified in a particular series of tests. Standard benchmarks for proving variable density flow models are the Henry, Elder, and salt dome (HYDROCOIN level 1 case 5) problems. We studied these benchmarks using two finite element simulators - ROCKFLOW, which was developed at the Institute of Fluid Mechanics and Computer Applications in Civil Engineering and FEFLOW, which was developed at the Institute for Water Resources Planning and Systems Research Ltd. Although both simulators are based on the Galerkin finite element method, they differ in many approximation details such as temporal discretization (Crank-Nicolson vs predictor-corrector schemes), spatial discretization (triangular and quadrilateral elements), finite element basis functions (linear, bilinear, biquadratic), iteration schemes (Newton, Picard) and solvers (direct, iterative). The numerical analysis illustrates discretization effects and defects arising from the different levels of the density of approximation. We contribute

  12. Teaching Laboratory Renovation

    Energy Technology Data Exchange (ETDEWEB)

    Al-Zuhairi, Ali Jassim; Al-Dahhan, Wedad; Hussein, Falah; Rodda, Kabrena E.; Yousif, Emad

    2016-12-21

    Scientists at universities across Iraq are actively working to report actual incidents and accidents occurring in their laboratories, as well as structural improvements made to improve safety and security, to raise awareness and encourage openness, leading to widespread adoption of robust Chemical Safety and Security (CSS) practices. The improvement of students’ understanding of concepts in science and its applications, practical scientific skills and understanding of how science and scientists work in laboratory experiences have been considered key aspects of education in science for over 100 years. Facility requirements for the necessary level of safety and security combined with specific requirements relevant to the course to be conducted dictate the structural design of a particular laboratory, and the design process must address both. This manuscript is the second in a series of five case studies describing laboratory incidents, accidents, and laboratory improvements. We summarize the process used to guide a major renovation of the chemistry instructional laboratory facilities at Al-Nahrain University and discuss lessons learned from the project.

  13. CERN-PS Main Power Converter Renovation How to Provide and Control the Large Flow of Energy for a Rapid Cyclic Machine?

    CERN Document Server

    Bordry, Frederick; Völker, F V

    2005-01-01

    The PS accelerator (Proton-Synchrotron) at CERN, which is part of the LHC injector chain, is composed of one hundred magnets connected in series. During a typical acceleration cycle (taking 2.4 seconds), the active power at the magnet terminals varies from plus to minus 40 MW. As this large active power variation was not acceptable to the electrical network, a motor-generator set (M-G) was inserted between the grid and the load. The M-G set (of 1968) acts as a fly-wheel with a stored kinetic energy of 233 MJ and the magnets are fed via two 12-pulse thyristor rectifiers. A renovation or replacement of the installation is planned in the near future as part of the consolidation of the LHC injectors to avoid any major breakdown, to improve overall availability and to reduce operation and maintenance costs. This paper presents a first comparison of technical solutions available to build such a power system and the strategy that will be applied for the up-grade of the system.

  14. Extensive renovation the pathology of heritage building

    DEFF Research Database (Denmark)

    Rasmussen, Torben Valdbjørn

    2015-01-01

    The pathology of heritage buildings is often related to renovation initiatives typically initiated by implementing energy savings measures.......The pathology of heritage buildings is often related to renovation initiatives typically initiated by implementing energy savings measures....

  15. Extensive renovation the pathology of heritage buildings

    DEFF Research Database (Denmark)

    Rasmussen, Torben Valdbjørn

    2015-01-01

    The pathology of heritage buildings is often related to renovation initiatives typically initiated by implementing energy savings measures.......The pathology of heritage buildings is often related to renovation initiatives typically initiated by implementing energy savings measures....

  16. Framing resident acceptance of sustainable renovation

    NARCIS (Netherlands)

    Boess, S.U.

    2015-01-01

    This paper presents the initial theoretical framework adopted for a study into resident acceptance of sustainable renovation. Seven expert interviews and two retrospective case studies revealed that the relationship between social housing residents and the renovation process requires careful attenti

  17. Verification and Validation of Numerical Models for Air/Water Flow on Coastal and Navigation Fluid-Structure Interaction Applications

    Science.gov (United States)

    Kees, C. E.; Farthing, M.; Dimakopoulos, A.; DeLataillade, T.

    2015-12-01

    Performance analysis and optimization of coastal and navigation structures is becoming feasible due to recent improvements in numerical methods for multiphase flows and the steady increase in capacity and availability of high performance computing resources. Now that the concept of fully three-dimensional air/water flow modelling for real world engineering analysis is achieving acceptance by the wider engineering community, it is critical to expand careful comparative studies on verification,validation, benchmarking, and uncertainty quantification for the variety of competing numerical methods that are continuing to evolve. Furthermore, uncertainty still remains about the relevance of secondary processes such as surface tension, air compressibility, air entrainment, and solid phase (structure) modelling so that questions about continuum mechanical theory and mathematical analysis of multiphase flow are still required. Two of the most popular and practical numerical approaches for large-scale engineering analysis are the Volume-Of-Fluid (VOF) and Level Set (LS) approaches. In this work we will present a publically available verification and validation test set for air-water-structure interaction problems as well as computational and physical model results including a hybrid VOF-LS method, traditional VOF methods, and Smoothed Particle Hydrodynamics (SPH) results. The test set repository and test problem formats will also be presented in order to facilitate future comparative studies and reproduction of scientific results.

  18. Sustainable Home Renovation for Canadians

    NARCIS (Netherlands)

    McKellar, G.

    2011-01-01

    This "designers' manual" is made during the TIDO-course AR0531 Smart & Bioclimatic Design. There is a staggering amount of existing buildings in Canada which were not built to e efficient, sustainable homes. This manual gives openings for renovating your home efficiently by providing practical info

  19. Embedded software verification and debugging

    CERN Document Server

    Winterholer, Markus

    2017-01-01

    This book provides comprehensive coverage of verification and debugging techniques for embedded software, which is frequently used in safety critical applications (e.g., automotive), where failures are unacceptable. Since the verification of complex systems needs to encompass the verification of both hardware and embedded software modules, this book focuses on verification and debugging approaches for embedded software with hardware dependencies. Coverage includes the entire flow of design, verification and debugging of embedded software and all key approaches to debugging, dynamic, static, and hybrid verification. This book discusses the current, industrial embedded software verification flow, as well as emerging trends with focus on formal and hybrid verification and debugging approaches. Includes in a single source the entire flow of design, verification and debugging of embedded software; Addresses the main techniques that are currently being used in the industry for assuring the quality of embedded softw...

  20. Renovation work at Building 280

    CERN Multimedia

    EN Department

    2010-01-01

    Processing units and containers will be temporarily installed in front of Building 280 between 17 and 21 February 2010 while renovation work is carried out on electrical equipment. During this period, the Route FERMI, i.e. the area between Buildings 280 and 530, will be closed to traffic. You are requested to comply with the road signs in place. Thank you for your understanding. For further information, please call 160481. EN-EL Group

  1. Renovation work at Restaurant 1

    CERN Multimedia

    2006-01-01

    Due to the age of the present kitchen and freeflow installations in Restaurant 1, essential renovation work is due to be carried out. The work is scheduled to last from September 2006 to May 2007. Work on the self-service area of the restaurant will commence in November. Every effort will be made to minimise the inconvenience caused to users of the restaurant and we thank you in advance for your co-operation during this period.

  2. Renovation works at Restaurant 1

    CERN Multimedia

    2006-01-01

    Due to the age of the present kitchen and freeflow installations in Restaurant 1, essential renovations are due to be carried out. The planned period for this project is September 2006 to May 2007. Work on the self-service area of the restaurant will commence in November. Every effort will be made to minimise the inconvenience caused to users of the restaurant and we thank you in advance for your co-operation during this period.

  3. Upcoming renovations in Building 63

    CERN Multimedia

    2014-01-01

    La Poste will close its doors in Building 63 on Friday, 28 November. It moves to Building 510 and where it will open on 1 December (see picture).   UNIQA will close its HelpDesk in Building 63 on Wednesday, 26 November and will re-open the next day in Building 510. La Poste and UNIQA are expected to return to their renovated office space between April and May 2015.

  4. Experimental verification of color flow imaging based on wideband Doppler method.

    Science.gov (United States)

    Tanaka, Naohiko

    2014-01-01

    The purpose of this study is to eliminate the aliasing in color flow imaging. The wideband Doppler method is applied to generate a color flow image, and the validity of the method is experimentally confirmed. The single beam experiment is carried out to confirm the velocity estimation based on the wideband Doppler method. The echo data for the conventional pulsed Doppler method and the wideband Doppler method are obtained using a flow model, and the estimated velocity for each method is compared. The color flow images for each method are also generated using several types of flow model. The generated images are compared, and the characteristics of the imaging based on the wideband Doppler method are discussed. The high velocity beyond the Nyquist limit is successfully estimated by the wideband Doppler method, and the availability in low velocity estimation is also confirmed. The aliasing in color flow images is eliminated, and the generated images show the significance of the elimination of the aliasing in the flow imaging. The aliasing in color flow imaging can be eliminated by the wideband Doppler method. This technique is useful for the exact understanding of blood flow dynamics.

  5. Computing equations of water hammer in pseudo-homogeneous solid-liquid flow and their verification

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    In engineering practice, single-phase water hammer models are still employed to analyze the water hammer of solid-liquid flow. According to the characteristics of solid-liquid flow, continuity equations and momentum equations of pseudo-homogeneous flows are deduced, and a pseudo-homogeneous water hammer model is thus built and verified with experiment results. The characteristics of solid-liquid flow's viscosity, resistance and wave velocity are considered in the model. Therefore, it has higher precision than a single-phase model.

  6. Promotion of Sustainable Renovation in Europe

    DEFF Research Database (Denmark)

    Fokaides, Paris A.; Kanarachos, Andreas; Kanarachos, Georgette

    2013-01-01

    pressing the energy renovation of buildings. Both the obstacles and the contribution of national regulations will be discussed, towards promotion of sustainable renovation in Europe today. This study is also expected to report on research initiatives currently being undertaken in Europe on the energy...

  7. Collaboration Opportunities in Advanced Housing Renovation

    NARCIS (Netherlands)

    Mlecnik, E.; Kondratenko, I.; Cré, J.; Vrijders, J.; Degraeve, P.; Van der Have, J.A.; Haavik, T.; Aabrekk, S.A.; Gron, M.; Hansen, S.; Svendsen, S.; Stenlund, O.; Paiho, S.

    2012-01-01

    In theory, there is huge potential for reducing the energy consumed by existing single-family houses by thoroughly renovating them. For the successful market development of highly energy-efficient integrated renovations, supply chain collaboration is very important, while at the same time customer d

  8. Preliminary Experimental Verification of Synthetic Aperture Flow Imaging Using a Dual Stage Beamformer Approach

    DEFF Research Database (Denmark)

    Li, Ye; Jensen, Jørgen Arendt

    2011-01-01

    A dual stage beamformer method for synthetic aperture flow imaging has been developed. The motivation is to increase the frame rate and still maintain a beamforming quality sufficient for flow estimation that is possible to implement in a commercial scanner. With the new method high resolution im...

  9. Finite element calculations and experimental verification of the unsteady potential flow in a centrifugal volute pump

    NARCIS (Netherlands)

    Badie, R.; Jonker, J.B.; Braembussche, van den R.A.

    1994-01-01

    In this paper we present a finite-element-based methode for the calculation of the unsteady potential flow in rotor/stator configurations. A numerical algorithm was developed to calculate the two-dimensional flow through a centrifugal volute pump, taking into account the width variation of the volut

  10. ENERGY EFFICIENT RENOVATION OF SOCIAL HOUSING

    DEFF Research Database (Denmark)

    Blyt, Henrik; Christiansen, Michael; Bech-Nielsen, Grith

    2013-01-01

    . Secondly we present follow up methods for developing an overall future energy efficient renovation housing sector strategy. All in all, our project contributes to the building sector by testing new methods and suggesting methods for meeting challenges concerning energy efficient renovation. It also......This paper presents a case study which investigates a strategic and methodological approach to future proofed renovations of social housing in an environmental, economically and socially sustainable way. In years to come the social housing sector must undergo major renovation. The housing sector...... and socially sustainable objective, which seeks towards energy efficient renovation as an overall, systemic and interdisciplinary collaboration, the construction industry needs to focus on developing, testing, evaluating and implementing tools and methods to optimize and improve processes in a value...

  11. Computing equations of water hammer in pseudo-homogeneous solid-liquid flow and their verification

    Institute of Scientific and Technical Information of China (English)

    韩文亮; 董曾南; 柴宏恩; 韩军

    2000-01-01

    In engineering practice, single-phase water hammer models are still employed to analyze the water hammer of solid-liquid flow. According to the characteristics of solid-liquid flow, continuity equations and momentum equations of pseudo-homogeneous flows are deduced, and a pseudo-homogeneous water hammer model is thus built and verified with experiment results. The characteristics of solid-liquid flow’s viscosity, resistance and wave velocity are considered in the model. Therefore, it has higher precision than a single-phase model.

  12. Experimental verification of the frozen flow atmospheric turbulence assumption with use of astronomical adaptive optics telemetry.

    Science.gov (United States)

    Poyneer, Lisa; van Dam, Marcos; Véran, Jean-Pierre

    2009-04-01

    We use closed-loop deformable mirror telemetry from Altair and Keck adaptive optics (AO) to determine whether atmospheric turbulence follows the frozen flow hypothesis. Using telemetry from AO systems, our algorithms (based on the predictive Fourier control framework) detect frozen flow >94% of the time. Usually one to three layers are detected. Between 20% and 40% of the total controllable phase power is due to frozen flow. Velocity vector RMS variability is less than 0.5 m/s (per axis) on 10-s intervals, indicating that the atmosphere is stable enough for predictive control to measure and adapt to prevailing atmospheric conditions before they change.

  13. Restaurant No. 1 fully renovated

    CERN Multimedia

    2007-01-01

    The Restaurant No. 1 team. After several months of patience and goodwill on the part of our clients, we are delighted to announce that the major renovation work which began in September 2006 has now been completed. From 21 May 2007 we look forward to welcoming you to a completely renovated restaurant area designed with you in mind. The restaurant team wishes to thank all its clients for their patience and loyalty. Particular attention has been paid in the new design to creating a spacious serving area and providing a wider choice of dishes. The new restaurant area has been designed as an open-plan space to enable you to view all the dishes before making your selection and to move around freely from one food access point to another. It comprises user-friendly areas that fully comply with hygiene standards. From now on you will be able to pick and choose to your heart's content. We invite you to try out wok cooking or some other speciality. Or select a pizza or a plate of pasta with a choice of two sauces fr...

  14. Numerical modeling and verification of gas flow through a network of crossed narrow v-grooves

    Science.gov (United States)

    Bejhed, Johan; Nguyen, Hugo; Åstrand, Peter; Eriksson, Anders; Köhler, Johan

    2006-10-01

    The gas flow through a network of crossing thin micro-machined channels has been successfully modeled and simulated. The crossings are formed by two sets of v-grooves that intersect as two silicon wafers are bonded together. The gas is distributed from inlets via a manifold of channels to the narrow v-grooves. The narrow v-grooves could work as a particle filter. The fluidic model is derived from the Navier-Stokes equation and assumes laminar isothermal flow and incorporates small Knudsen number corrections and Poiseuille number calculations. The simulations use the finite element method. Several elements of the full crossing network model are treated separately before lumping them together: the straight v-grooves, a single crossing in an infinite set and a set of exactly four crossings along the flow path. The introduction of a crossing effectively corresponds to a virtual reduction of the length of the flow path, thereby defining a new effective length. The first and last crossings of each flow path together contribute to a pressure drop equal to that from three ordinary crossings. The derived full network model has been compared to previous experimental results on several differently shaped crossed v-groove networks. Within the experimental errors, the model corresponds to the mass flow and pressure drop measurements. The main error source is the uncertainty in v-groove width which has a profound impact on the fluidic behavior.

  15. Derivation, calibration and verification of macroscopic model for urban traffic flow. Part 2

    CERN Document Server

    Alekseenko, Andrey E; Kholodov, Aleksandr S; Goreva, Anna I; Kurzhanskiy, Alexander A; Chehovich, Yuriy V; Starozhilets, Vsevolod M

    2016-01-01

    In this paper, we propose a unified procedure for calibration of macroscopic second-order multilane traffic models. The focus is on calibrating the fundamental diagram using the combination stationary detector data and GPS traces. GPS traces are used in estimation of the deceleration wave speed. Thus calibrated model adequately represents the three phases of traffic: free flow, synchronized flow and the wide moving jam. The proposed approach was validated in simulation using stationary detection data and GPS traces from the Moscow Ring Road. Simulation showed that the proposed second-order model is more accurate than the first-order LWR model.

  16. VERIFICATION OF MATHEMATICL MODEL FOR SEDIMENT TRANSPORT BY UNSTEADY FLOW IN THE LOWER YELLOW RIVER

    Institute of Scientific and Technical Information of China (English)

    Jianjun ZHOU; Bingnan LIN

    2004-01-01

    Field data from the Lower Yellow River (LYR) covering a period of ten consecutive years are used to test a mathematical model for one dimensional sediment transport by unsteady flow developed previously by the writers. Data of the first year of the said period, i.e., 1976, are used to calibrate the model and those of the remaining years to verify it. Items investigated include discharge, water stage, rate of transport of suspended sediment and riverbed erosion/deposition. Comparisons between computed and observed data indicate that the proposed model may well simulate sediment transport in the LYR under conditions of unsteady flow with sufficient accuracy.

  17. Renovation of historic, protected buildings in Geneva

    Energy Technology Data Exchange (ETDEWEB)

    Weber, W.; Haefeli, P.

    2009-07-01

    This report for the Swiss Federal Office of Energy (SFOE) reports on work done within the IEA Solar Heating and Cooling Program's Task 37. The objective of SHC Task 37 is to develop a solid knowledge base on how to renovate housings to a very high energy standard and how to develop strategies that support the market penetration of such renovation methods. The report deals with four listed buildings of historical value in Geneva, Switzerland, and examines various aspects of the renovation. These aspects include a discussion of the techniques applied, including internal and external insulation. Simulation methods used and results obtained are discussed. The improvements made are evaluated.

  18. Energy renovation solutions - catalogue; Energirenoveringstiltag - katalog

    Energy Technology Data Exchange (ETDEWEB)

    Tommerup, H.

    2010-07-15

    The project's aim has been to develop methods and examples of extensive energy renovations to stimulate energy conservation and increased use of renewable energy in existing buildings. The current report represents an extensive technology catalogue of typical energy renovation measures in connection with the renovation of existing buildings. For every action the main aspects are explained concerning such issues as technology, use, barriers, indoor climate, energy conservation and prices. The report is mainly targeted at construction industry, but also many other stakeholders can benefit from the report. (ln)

  19. Verification and comparison of four numerical schemes for a 1D viscoelastic blood flow model.

    Science.gov (United States)

    Wang, Xiaofei; Fullana, Jose-Maria; Lagrée, Pierre-Yves

    2015-01-01

    A reliable and fast numerical scheme is crucial for the 1D simulation of blood flow in compliant vessels. In this paper, a 1D blood flow model is incorporated with a Kelvin-Voigt viscoelastic arterial wall. This leads to a nonlinear hyperbolic-parabolic system, which is then solved with four numerical schemes, namely: MacCormack, Taylor-Galerkin, monotonic upwind scheme for conservation law and local discontinuous Galerkin. The numerical schemes are tested on a single vessel, a simple bifurcation and a network with 55 arteries. The numerical solutions are checked favorably against analytical, semi-analytical solutions or clinical observations. Among the numerical schemes, comparisons are made in four important aspects: accuracy, ability to capture shock-like phenomena, computational speed and implementation complexity. The suitable conditions for the application of each scheme are discussed.

  20. Verification of mesoscopic models of viscoelastic fluids with a non-monotonic flow curve

    Science.gov (United States)

    Kuznetsova, Julia L.; Skul'skiy, Oleg I.

    2016-02-01

    The non-monotonic flow curve of a 1 wt.% polyacrylonitrile solution in dimethyl sulfoxide is described by two mesoscopic models: the modified Vinogradov-Pokrovsky model and the model proposed by Remmelgas, Harrison and Leal. To obtain an adequate description of the experimental curve, we have selected suitable internal parameters for these models. Analytical solutions for the Couette-Poiseuille flow problems are determined in parametric form, which allows us to plot the distribution of stress components and anisotropy tensor as well as the velocity profiles containing closed loops and weak tangential discontinuities. It is shown that both models predict a similar qualitative picture of structure evolution, but exhibit a significant discrepancy in the quantitative description of the magnitude of molecular chain stretching.

  1. Verification of a binary fluid solidification model in the finite-volume flow solver

    CERN Document Server

    Waclawczyk, Tomasz

    2015-01-01

    The aim of this paper is to verify the new numerical implementation of a binary fluid, heat conduction dominated solidification model. First, we extend a semi-analytical solution to the heat diffusion equation, next, the range of its applicability is investigated. It was found that the linearization introduced to the heat diffusion equation negatively affects the ability to predict solidus and liquidus lines positions whenever the magnitude of latent heat of fusion exceeds a certain value. Next, a binary fluid solidification model is coupled with a flow solver, and is used in a numerical study of Al-4.1%Cu alloy solidification in a two-dimensional rectangular cavity. An accurate coupling between the solidification model and the flow solver is crucial for the correct forecast of solidification front positions and macrosegregation patterns.

  2. A soil flowing characteristics monitoring method in planetary drilling and coring verification experiments

    Science.gov (United States)

    Tang, Junyue; Quan, Qiquan; Jiang, Shengyuan; Chen, Chongbin; Yuan, Fengpei; Deng, Zongquan

    2017-03-01

    Some type of piercing into the subsurface formation is required in future planetary explorations to enhance the understanding of early stars' geological evolution and the origin of life. Compared with other technical methods, drilling & coring, only utilizing the compound locomotion of rotation and penetration, can sample the subsurface soil relatively efficient and convenient. However, given the uncertain mechanical properties of planetary soil, drilling state signals should be monitored online to improve the robustness of drilling system and avoid potential drilling faults. Since the flowing characteristics of interacted soil, such as removal volume, coring height, removal velocity and accumulation angle, directly reveal the drilling conditions, they are enhancing resources to comprehend the sampling phenomenon and can be used to help control the drill tool. This paper proposed a novel soil flowing characteristics (SFC) monitoring method by applying an industrial camera to record the flowing characteristics of removed cuttings and by utilizing an ultrasonic sensor into the hollow auger to monitor the sampled core. Experiments in one typical lunar regolith simulant indicate that the monitored SFC accurately reflects the interaction between the drill tool and soil.

  3. Verification of a three-dimensional viscous flow analysis for a single stage compressor

    Science.gov (United States)

    Matsuoka, Akinori; Hashimoto, Keisuke; Nozaki, Osamu; Kikuchi, Kazuo; Fukuda, Masahiro; Tamura, Atsuhiro

    1992-12-01

    A transonic flowfield around rotor blades of a highly loaded single stage axial compressor was numerically analyzed by a three dimensional compressible Navier-Stokes equation code using Chakravarthy and Osher type total variation diminishing (TVD) scheme. A stage analysis which calculates both flowfields around inlet guide vane (IGV) and rotor blades simultaneously was carried out. Comparing with design values and experimental data, computed results show slight difference quantitatively. But the numerical calculation simulates well the pressure rise characteristics of the compressor and its flow pattern including strong shock surface.

  4. Numerical simulation and experimental verification of silicone oil flow over magnetic fluid under applied magnetic field

    Institute of Scientific and Technical Information of China (English)

    Ruoyu Hong; Zhiqiang Ren; Shizhong Zhang; Jianmin Ding; Hongzhong Li

    2007-01-01

    Two-layer flow of magnetic fluid and non-magnetic silicone oil was simulated numerically. The continuity equation, momentum equations,kinematic equation, and magnetic potential equation were solved in two-dimensional Cartesian coordinate. PLIC (piecewise linear integration calculation) VOF (volume of fluid) scheme was employed to track the free interface. Surface tension was treated via a continuous surface force(CSF) model that ensures robustness and accuracy. The influences of applied magnetic field, inlet velocity profile, initial surface disturbance of interface and surface tension were analyzed. The computed interface shapes at different conditions were compared with experimental observation.

  5. Collaboration opportunities in advanced housing renovation

    DEFF Research Database (Denmark)

    Mlecnik, Erwin; Kondratenko, Irena; Cré, Johan

    2012-01-01

    identified key supply-side needs through interviews and questionnaires, and analysed important elements for the development of a web-based portal that can connect supply and demand. The project further developed ideas and methods for collaboration and business model generation between different players...... demand for integrated renovations has to be stimulated. A research and networking methodology was developed within the framework of the One Stop Shop project to identify and develop collaboration opportunities for advanced housing renovation in Belgium, Denmark, Finland and Norway. The research...... on the renovation market. These different research results contributed to defining new business opportunities related to process innovation to unburden the homeowner and to achieve less fragmented renovation processes...

  6. Verification of the helioseismic Fourier-Legendre analysis for meridional flow measurements

    CERN Document Server

    Roth, Markus; Hartlep, Thomas

    2016-01-01

    Measuring the Sun's internal meridional flow is one of the key issues of helioseismology. Using the Fourier-Legendre analysis is a technique for addressing this problem. We validate this technique with the help of artificial helioseismic data. The analysed data set was obtained by numerically simulating the effect of the meridional flow on the seismic wave field in the full volume of the Sun. In this way, a 51.2-hour long time series was generated. The resulting surface velocity field is then analyzed in various settings: Two $360^\\circ \\times 90^\\circ$ halfspheres, two $120^\\circ \\times 60^\\circ$ patches on the front and farside of the Sun (North and South, respectively) and two $120^\\circ \\times 60^\\circ$ patches on the northern and southern frontside only. We compare two possible measurement setups: observations from Earth and from an additional spacecraft on the solar farside, and observations from Earth only, in which case the full information of the global solar oscillation wave field was available. We ...

  7. Renovate Right: Prevent Lead Poisoning in Children

    Centers for Disease Control (CDC) Podcasts

    2008-10-02

    In this podcast, Dr. Maria Doa, Director of the Environmental Protection Agency's (EPA) National Program Chemicals Division, discusses EPA's new rule for renovations, repairs, and painting activities. The new rule includes information on lead-safe work practices when conducting renovations, repairs, and painting in pre-1978 homes and schools to prevent the spread of lead dust.  Created: 10/2/2008 by National Center for Environmental Health (NCEH).   Date Released: 10/2/2008.

  8. Mathematical modeling and microbiological verification of ohmic heating of a multicomponent mixture of particles in a continuous flow ohmic heater system with electric field parallel to flow.

    Science.gov (United States)

    Kamonpatana, Pitiya; Mohamed, Hussein M H; Shynkaryk, Mykola; Heskitt, Brian; Yousef, Ahmed E; Sastry, Sudhir K

    2013-11-01

    To accomplish continuous flow ohmic heating of a low-acid food product, sufficient heat treatment needs to be delivered to the slowest-heating particle at the outlet of the holding section. This research was aimed at developing mathematical models for sterilization of a multicomponent food in a pilot-scale ohmic heater with electric-field-oriented parallel to the flow and validating microbial inactivation by inoculated particle methods. The model involved 2 sets of simulations, one for determination of fluid temperatures, and a second for evaluating the worst-case scenario. A residence time distribution study was conducted using radio frequency identification methodology to determine the residence time of the fastest-moving particle from a sample of at least 300 particles. Thermal verification of the mathematical model showed good agreement between calculated and experimental fluid temperatures (P > 0.05) at heater and holding tube exits, with a maximum error of 0.6 °C. To achieve a specified target lethal effect at the cold spot of the slowest-heating particle, the length of holding tube required was predicted to be 22 m for a 139.6 °C process temperature with volumetric flow rate of 1.0 × 10(-4) m3/s and 0.05 m in diameter. To verify the model, a microbiological validation test was conducted using at least 299 chicken-alginate particles inoculated with Clostridium sporogenes spores per run. The inoculated pack study indicated the absence of viable microorganisms at the target treatment and its presence for a subtarget treatment, thereby verifying model predictions.

  9. Unveiling the Process of Sustainable Renovation

    Directory of Open Access Journals (Sweden)

    Pär Meiling

    2012-06-01

    Full Text Available Renovation processes are complex and there is a risk of underestimating architectural, cultural, and social values in favor of exterior and interior upgrading, energy efficiency and financing. A synthesized, systematic process is needed for making decisions about renovation measures. The aim of this paper is to survey decision-making procedures aimed for sustainable renovation. We inventory existing tools and methodologies based on (a a literature review and (b results from a workshop with participants from the Swedish buildings sector, academia, and other stakeholders. Our results show that there are many tools available but few seem to have reached acceptance in renovation. None of the more established methods and tools addresses a complexity that balances material and immaterial values and they are often too specific. There is a need for simplified tools, especially for evaluating more intangible, experienced values. Instead of one comprehensive tool preferably a methodology for renovation should be developed with references to different tools. In the building sector, renovation should be considered a service-minded process rather than a merely technical one as often is the case in new construction. There is a need to clarify the process and the meaning of the terms, and that need is even more urgent when it comes to the values that are more difficult to define.

  10. Experimental Verification of Overlimiting Current by Surface Conduction and Electro-osmotic Flow in Microchannels

    CERN Document Server

    Nam, Sungmin; Heo, Joonseong; Lim, Geunbae; Bazant, Martin Z; Sung, Gunyong; Kim, Sung Jae

    2014-01-01

    Possible mechanisms of overlimiting current in unsupported electrolytes, exceeding diffusion limitation, have been intensely studied for their fundamental significance and applications to desalination, separations, sensing, and energy storage. In bulk membrane systems, the primary physical mechanism is electro-convection, driven by electro-osmotic instability on the membrane surface. It has recently been predicted that confinement by charged surfaces in microchannels or porous media favors two new mechanisms, electro-osmotic flow (EOF) and surface conduction (SC), driven by large electric fields in the depleted region acting on the electric double layers on the sidewalls. Here, we provide the first direct evidence for the transition from SC to EOF above a critical channel height, using in situ particle tracking and current-voltage measurements in a micro/nanofluidic device. The dependence of the over-limiting conductance on channel depth (d) is consistent with theoretical predictions, scaling as d^-1 for SC a...

  11. Verification and comparison of four numerical schemes for a 1D viscoelastic blood flow model

    CERN Document Server

    Wang, Xiaofei; Lagrée, Pierre-Yves

    2013-01-01

    In this paper, we present four numerical schemes for a 1D viscoelastic blood flow model. In the case with a small nonlinearity (small amplitude of wave), asymptotic analysis predicts several behaviours of the wave: propagation in a uniform tube, attenuation of the amplitude due to the skin friction, diffusion due to the viscosity of the wall, and reflection and transmission at a branching point. These predictions are compared very favorably with all of the numerical solutions. The schemes are also tested in case with a larger nonlinearity. Finally, we apply all of the schemes on a relatively realistic arterial system with 55 arteries. The schemes are compared in four aspects: the spatial and temporal convergence speed, the ability to capture shock phenomena, the computation speed and the complexity of the implementation. The suitable conditions for the application of the various schemes are discussed.

  12. Experimental verification of overlimiting current by surface conduction and electro-osmotic flow in microchannels.

    Science.gov (United States)

    Nam, Sungmin; Cho, Inhee; Heo, Joonseong; Lim, Geunbae; Bazant, Martin Z; Moon, Dustin Jaesuk; Sung, Gun Yong; Kim, Sung Jae

    2015-03-20

    Direct evidence is provided for the transition from surface conduction (SC) to electro-osmotic flow (EOF) above a critical channel depth (d) of a nanofluidic device. The dependence of the overlimiting conductance (OLC) on d is consistent with theoretical predictions, scaling as d(-1) for SC and d(4/5) for EOF with a minimum around d=8  μm. The propagation of transient deionization shocks is also visualized, revealing complex patterns of EOF vortices and unstable convection with increasing d. This unified picture of surface-driven OLC can guide further advances in electrokinetic theory, as well as engineering applications of ion concentration polarization in microfluidics and porous media.

  13. Description and verification of a novel flow and transport model for silicate-gel emplacement

    Science.gov (United States)

    Walther, Marc; Solpuker, Utku; Böttcher, Norbert; Kolditz, Olaf; Liedl, Rudolf; Schwartz, Frank W.

    2014-02-01

    We present a novel approach for the numerical simulation of the gelation of silicate solutions under density-dependent flow conditions. The method utilizes an auxiliary, not density-dependent solute that is subject to a linear decay function to provide temporal information that is used to describe the viscosity change of the fluid. By comparing the modeling results to experimental data, we are able to simulate the behavior and the gelation process of the injected solute for three different compositions, including long-term stability of the gelated area, and non-gelation of low concentrations due to hydro-dynamic dispersion. This approach can also be used for other types of solutes with this gelling property and is useful in a variety of applications in geological, civil and environmental engineering.

  14. Integrated Java Bytecode Verification

    DEFF Research Database (Denmark)

    Gal, Andreas; Probst, Christian; Franz, Michael

    2005-01-01

    Existing Java verifiers perform an iterative data-flow analysis to discover the unambiguous type of values stored on the stack or in registers. Our novel verification algorithm uses abstract interpretation to obtain definition/use information for each register and stack location in the program......, which in turn is used to transform the program into Static Single Assignment form. In SSA, verification is reduced to simple type compatibility checking between the definition type of each SSA variable and the type of each of its uses. Inter-adjacent transitions of a value through stack and registers...... are no longer verified explicitly. This integrated approach is more efficient than traditional bytecode verification but still as safe as strict verification, as overall program correctness can be induced once the data flow from each definition to all associated uses is known to be type-safe....

  15. Energy and environmental assessment in connection with renovation; Energi- og miljoevurdering ved renovering

    Energy Technology Data Exchange (ETDEWEB)

    Holleris Petersen, E.

    2001-07-01

    Environmental assessments were carried out for renovation projects that more energy saving measures than usual for renovation projects and also for more traditional renovation of small flats. These environmental assessments were carried out primarily with a view to test the suitability of the BEAT 2000 simulation program for energy and environmental assessments for renovation projects, but also with a view to clarify the importance of doing more comprehensive environmental assessments. BEAT 2000 tests will show whether the assessment tool should be changed to include renovation projects and also of the tool's database should be extended with specific materials and building elements used in renovation. Experience gained on the project shows that environmental assessment of renovation projects does not in principle differ from assessments of new building. Further data need to be collected, especially in relation to new and not commonly used energy-saving solutions and the selected materials. These are characterised by occurring not only in connection with renovation but also with new buildings where they can generally be used. It may be added that an extended database including materials for new and not commonly used energy-saving solutions will facilitate environmental assessment of most traditional plumbing and electrical installations as the same materials are extensively used. They can also be used in connection with renovation and new building. Moreover the database should be extended to include a number of typical building elements used for renovating. However, it should be expected that new and not commonly used building elements will be used in connection with renovation, their use dictated by specific physical conditions of old houses. Therefore it will be impossible to establish a database of building elements for renovation that will be as comprehensive as building elements for new buildings. It will often be necessary for the user himself to define

  16. Generic System Verilog Universal Verification Methodology Based Reusable Verification Environment for Efficient Verification of Image Signal Processing IPS/SOCS

    Directory of Open Access Journals (Sweden)

    Abhishek Jain

    2012-12-01

    Full Text Available In this paper, we present Generic System Verilog Universal Verification Methodology based Reusable Verification Environment for efficient verification of Image Signal Processing IP’s/SoC’s. With the tight schedules on all projects it is important to have a strong verification methodology which contributes to First Silicon Success. Deploy methodologies which enforce full functional coverage and verification of corner cases through pseudo random test scenarios is required. Also, standardization of verification flow is needed. Previously, inside imaging group of ST, Specman (e/Verilog based Verification Environment forIP/Subsystem level verification and C/C++/Verilog based Directed Verification Environment for SoC Level Verification was used for Functional Verification. Different Verification Environments were used at IP level and SoC level. Different Verification/Validation Methodologies were used for SoC Verification across multiple sites. Verification teams were also looking for the ways how to catch bugs early in the design cycle? Thus, Generic System Verilog Universal Verification Methodology (UVM based Reusable Verification Environment is required to avoid the problem of having so many methodologies and provides a standard unified solution which compiles on all tools.

  17. Distinctiveness of Initial Preform Properties in Renovation

    Directory of Open Access Journals (Sweden)

    V. M. Yaroslavtsev

    2015-01-01

    Full Text Available Technologies of renovation form a special group of resource-and energy saving technological processes as they are, by definition, already aimed either at increasing resource of the objects satisfying needs of the society life support and practical activities in different spheres, or at extension of their life cycle including a reuse of material from which they are made. Renovation is used where there is a material object, which does not meet requirements of standard or technical documentation.A characteristic feature of the renovation technologies is lack of procedure for a choice of the preform as in all cases an initial preform is the renovation object itself. Thus each object, acting as an initial preform, has the exclusively individual properties, including technological ones.Distinctiveness of renovation object properties is correlated, first of all, with the personified conditions of formation and (or change of condition of their properties in time at all stages of life cycle (production – transportation – warehousing – operation starting with a preform material when manufacturing under all types of loadings (technological and operational. As a result each object forms its "history" of loading and damages and, therefore, its information base which has to consider the phenomenon of “heredity of life cycle”. The term "heredity of life cycle" characterizes information support of object at any moment under review, including both information of technological inheritance, and data of operational heredity.As a result at every moment of time we have a product with a set of new, uncertain properties caused by the phenomena of heredity of life cycle. These properties are individual for each object to be renovated, which changed its status for the status of initial preform for different types of renovation technologies. This is one of the most important distinctions of renovation technology from the technology used to manufacture a new

  18. Kinds of initial billets in renovation technologies

    Directory of Open Access Journals (Sweden)

    V. M. Yaroslavtsev

    2014-01-01

    Full Text Available Nowadays, technologists in charge of repair, restoration, modernization, and utilization of engineering and other tangible objects widely use the concepts "renovation" and "renovation technologies" pioneered at BMSTU. In forming a new field of science these concepts, in the proper sense of the word, are of composite, generalized character. They concern all the activities and technologies aimed at increasing an object resource or its lifecycle extension, including object material recycling.In the cutting-edge renovation technologies an object (part, assembly, machine, etc. damaged in the operating process is considered to be an initial billet. In renovation, one of the most widespread kinds of initial billets is a damaged part.Such a part can be used again, if, for example, it has saved its material properties in full measure while only contact surfaces or parts of these surfaces have become damaged, and at a point of renovation they can be restored for recycling. If a part has lost its initial properties in full bulk of material, it may be reusable in the assemblies and machines with less rigid requirements for material properties.Or in case of properties loss below the permissible level a damaged part-billet is utilized. Thus, the part-billet state at the point of renovation defines the kind of renovation technology and the main (basic technological method to effect on the damaged part, as well as a set and a sequence of technological methods in general manufacturing process of renovation.However renovation technologies are used not only at the repair and restoration stages after operation-service. So, at the manufacturing stage of a new product to provide the quality to raise a resource are applied the same technological methods as renovation technologies for the objects damaged at the stage of operation. Besides, it is known that at the manufacturing stage a part quality depends not only on the last operation, but also on the features of

  19. Energy Efficient Renovation of Social Housing

    DEFF Research Database (Denmark)

    Bech-Nielsen, Grith; Christiansen, Michael

    2013-01-01

    In years to come the social housing sector (SH) must undergo renovation. The SH is out of step with modern requirements when it comes to plan arrangements, energy frame calcu-lation, flexible building services and social challenges. A way to solve such challenges in an environmentally, economically...... and socially beneficial way is energy renovation, which is overall, systemic and carried out as interdisciplinary collaborations. The project meets these challenges with two findings: First we present methods on how to carry out value generating interdisciplinary collabora-tion between the SH parties......, such as residents, housing administration, politicians, advi-sors, producers and contractors. Secondly we present follow up methods for developing an overall future energy renova-tion SH strategy. Our project contributes to the building sector by suggesting new methods for meeting challenges concerning energy...

  20. Analysis of promising sustainable renovation concepts

    DEFF Research Database (Denmark)

    Vanhoutteghem, Lies; Tommerup, Henrik M.; Svendsen, Svend

    the investment and running cost and savings during a defined relevant reference period, e.g. 30 years. Another method that could be used to illustrate the economic implications is “annual economic balance”, i.e. savings minus repayments on a mortgage credit loan, which may be relevant for homeowners who want...... method for proposals on package solutions for sustainable renovation was described. The method consists of four steps, going from investigation of the house to proposal for sustainable renovation, detailed planning and commissioning after renovation. It could be used by teams of consultants...... of 135 to 200 kWh/m2. Electric heating (and oil heating) of single-family houses is very common in the Nordic countries, except for Denmark where oil/gas boiler and district heating is mostly used. Natural ventilation is widespread in Denmark and there is tradition for mechanical ventilation in Norway...

  1. Energy Efficient Renovation of Social Housing

    DEFF Research Database (Denmark)

    Bech-Nielsen, Grith; Christiansen, Michael

    2013-01-01

    In years to come the social housing sector (SH) must undergo renovation. The SH is out of step with modern requirements when it comes to plan arrangements, energy frame calcu-lation, flexible building services and social challenges. A way to solve such challenges in an environmentally, economically......), (2) workshops and (3) seminars for qualifying (4) the definition of a common framework for (5) the development and (6) acceptance of the actual energy renovation strategy, which will then be transformed into action plans in the form of (7) ”common screening” of housing and housing areas as a basis...

  2. Mathematical modelling of a single-line flow-injection analysis systems with single-layer enzyme electrode detection. Pt. 3; Experimental verification of the model

    Energy Technology Data Exchange (ETDEWEB)

    Kolev, S.D. (Sofia Univ. (Bulgaria). Khimicheski Fakultet); Nagy, Geza; Pungor, Ernoe (Budapesti Mueszaki Egyetem, Budapest (Hungary). Altalanos es Analitikai Kemia Tanszek)

    1991-11-20

    Glucose and urea electrodes, prepared by two different enzyme immobilization techniques and used as detectors in a single-line flow-injection manifold, were experimentally investigated for elucidating the influence of their most important parameters, i.e., the initial substrate concentration in the sample, the enzyme concentration in the reaction layer and its thickness and the buffer concentration, on the output signal. The results obtained were compared with the theoretical predictions based on simulations of the model for single-line flow-injection systems with single-layer enzyme electrode detection. The good qualitative agreement which was observed is a convincing experimental verification of this model and the guidelines for the production of flow-through biocatalytic electrodes with optimum design based upon it. (author). 12 refs.; 6 figs.

  3. Renovation of the CERN Computer Centre

    CERN Multimedia

    Patrice Loïez

    2003-01-01

    The Computer Centre at CERN is seen after half of the equipment is the large ground floor room has been removed. A large-scale spring-cleaning operation took place before renovation work for the new CERN Grid system began. Fifteen kilometres of cables that were no longer needed were removed from the cavity floor for recycling.

  4. Remodeling, Renovation, & Conversion of Educational Facilities.

    Science.gov (United States)

    Association of Physical Plant Administrators of Universities and Colleges, Washington, DC.

    Based on a series of workshops, this collection of papers provides a framework for thought--emphasizing planning within time, flexibility, and maintenance constraints--as well as a practical guide for actual engineering of remodeling/renovation/conversion projects. Is remodeling always less expensive than new construction? Should high initial…

  5. Renovating Older Schools: Reusing Older Schools Workshop.

    Science.gov (United States)

    Mississippi State Univ., Mississippi State. Educational Design Inst.

    A slide presentation examines the decisionmaking process behind whether a community should renovate their older school facilities or abandon them for new facilities. Three factors to be considered in this decision are addressed and involve the school's location, the history of the school, and the relationship of the school to the community and the…

  6. Developing an integrated offer for sustainable renovations

    NARCIS (Netherlands)

    Cré, J.; Mlecnik, E.; Kondratenko, I.; Degraeve, P.; Van der Have, J.A.; Vrijders, J.; Van Dessel, J.; Haavik, T.; Aabrekk, S.; Paiho, S.; Stenlund, O.; Svendsen, S.; Vanhoutteghem, L.; Hansen, S.

    2012-01-01

    Within an ERANET-ERACOBUILD project, this study investigates the opportunities and barriers to establish a “one stop shop” with an integrated supply side, to counteract the fragmented offer in sustainable renovation of single-family houses and to increase the level of knowledge, skills and innovatio

  7. Renovating a Fusee Ceramique Barrel Vault

    NARCIS (Netherlands)

    Kamerling, M.W.

    2015-01-01

    This paper describes a proposal to renovate a Fusee Ceramique Barrel Vault with steel diagonals In 1956 two workshops, varying in height and span, were built in Wormerveer, The Netherlands. Both workshops were roofed with a concrete barrel vault with a thickness of 110 mm. The cylindrical vaults w

  8. Blood flow in intracranial aneurysms treated with Pipeline embolization devices: computational simulation and verification with Doppler ultrasonography on phantom models

    Directory of Open Access Journals (Sweden)

    Anderson Chun On Tsang

    2015-04-01

    Full Text Available Purpose: The aim of this study was to validate a computational fluid dynamics (CFD simulation of flow-diverter treatment through Doppler ultrasonography measurements in patient-specific models of intracranial bifurcation and side-wall aneurysms. Methods: Computational and physical models of patient-specific bifurcation and sidewall aneurysms were constructed from computed tomography angiography with use of stereolithography, a three-dimensional printing technology. Flow dynamics parameters before and after flow-diverter treatment were measured with pulse-wave and color Doppler ultrasonography, and then compared with CFD simulations. Results: CFD simulations showed drastic flow reduction after flow-diverter treatment in both aneurysms. The mean volume flow rate decreased by 90% and 85% for the bifurcation aneurysm and the side-wall aneurysm, respectively. Velocity contour plots from computer simulations before and after flow diversion closely resembled the patterns obtained by color Doppler ultrasonography. Conclusion: The CFD estimation of flow reduction in aneurysms treated with a flow-diverting stent was verified by Doppler ultrasonography in patient-specific phantom models of bifurcation and side-wall aneurysms. The combination of CFD and ultrasonography may constitute a feasible and reliable technique in studying the treatment of intracranial aneurysms with flow-diverting stents.

  9. Analysis and experimental verification of new power flow control for grid-connected inverter with LCL filter in microgrid.

    Science.gov (United States)

    Gu, Herong; Guan, Yajuan; Wang, Huaibao; Wei, Baoze; Guo, Xiaoqiang

    2014-01-01

    Microgrid is an effective way to integrate the distributed energy resources into the utility networks. One of the most important issues is the power flow control of grid-connected voltage-source inverter in microgrid. In this paper, the small-signal model of the power flow control for the grid-connected inverter is established, from which it can be observed that the conventional power flow control may suffer from the poor damping and slow transient response. While the new power flow control can mitigate these problems without affecting the steady-state power flow regulation. Results of continuous-domain simulations in MATLAB and digital control experiments based on a 32-bit fixed-point TMS320F2812 DSP are in good agreement, which verify the small signal model analysis and effectiveness of the proposed method.

  10. Roof renovation of buildings 128 and 129

    CERN Multimedia

    2015-01-01

    The roof renovation of buildings 128 and 129 is scheduled to take place from 17 August to 15 October 2015.   During this period, access to the "raw material" workshop will be limited and controlled due to asbestos removal. Collecting your orders directly from the building will be difficult, or even impossible, and urgent requests will be difficult to carry out. We therefore ask you to create your requests via EDH, so that delivery may be carried out as soon as possible. Thank you for your understanding. GS Department

  11. Evaluation of Multi Residential House Renovation Efficiency

    Directory of Open Access Journals (Sweden)

    Daiva Rapcevičienė

    2011-03-01

    Full Text Available Analyzed multi residential house renovation investment projects efficiency evaluation methods: economic-social, and environmental, as well as key financial valuation methods: simple pay-back period, the energy cost savings, the net present value, internal rate of return. Building walls condition regenerative rate which is used to evaluate investments in energy-saving measures is also discussed. According to reconstruction investments of multi residential house, three government financing programs of multi residential house are evaluated and selected the most effective program by comparing financial valuation methods taking and without taking into account building walls condition regenerative rate. Article in Lithuanian

  12. Renovation of the CERN outdoor lighting

    CERN Multimedia

    GS Department

    2010-01-01

    Due to the renovation of the CERN outdoor lighting, traffic will be limited to one way along “Route Gregory” from the E entrance (France) up to “Route Fermi” just before the water tower between 12th and 23rd July 2010. Disruption can also be expected in the car parks “Les Erables” and “Les Tilleuls” close to building 30 and also the car park in front of building 377, between 19th and 30th July 2010. Thanks for your understanding. SEM Group

  13. LHC Magnet Test Benches Controls Renovation

    CERN Document Server

    Andreassen, O O; Page, S; Raimondo, A; Rijllart, A; Zorin, E

    2011-01-01

    The LHC magnet test benches controls were designed in 1996. They were based on VME data acquisition systems, Siemens PLCs control and interlocks systems. After a review of renovation of superconducting laboratories at CERN in 2009, it was decided to replace the VME systems with a PXI based systems and the obsolete Sun/Solaris workstations with Linux PC’s. This paper covers the requirements for the new system and shares the experience of the upgrade of the magnet test benches to these new platforms.

  14. Existing sustainable renovation concepts for single-family houses

    DEFF Research Database (Denmark)

    Tommerup, Henrik M.; Vanhoutteghem, Lies; Svendsen, Svend

    2010-01-01

    with individual solutions, traditional warehouses ”do-it-yourself-shops” and some actors marketing single products. To speed up the implementation of sustainable renovation of single-family houses there is a great need for full-service packages. Existing technical renovation concepts, typically focusing......In the Nordic Innovation Centre Project, SuccessFamilies, the main objective is to change the business environment in order to speed up the implementation of sustainable renovation of single-family houses – proposing new service concepts that will combine both the technical solutions, financing...... services as well as other promoting issues to overcome the behavioural, organizational, legal and social barriers that exist in sustainable renovation. A starting point for such a change has been to get an overview of the existing sustainable renovation concepts, i.e. full-service concepts and technical...

  15. Energy Renovation of a Typical Danish Single-family House

    DEFF Research Database (Denmark)

    Tommerup, Henrik M.; Svendsen, Svend

    2007-01-01

    the effect of the new requirements for renovation is that existing buildings should be brought up to the energy performance level of new buildings in connection with larger renovations and other substantial changes in the buildings. To demonstrate how it could be done, a thorough energy efficient renovation...... of a typical Danish single-family house from the 1960/70’s with need of renovation has been initiated and the preliminary results are presented in this paper. It is worth noting that about 500,000 of a total of 1.1 million Danish detached single-family houses were erected in that time period. Specifically......, the purpose of the project was to demonstrate that energy efficient renovation of a typical single-family house would lead to large reductions in energy consumption in a cost efficient manner, and at the same time improve living conditions. The focus has also been on achieving a commonly acceptable design...

  16. How to motivate homeowners to invest in sustainable renovation?

    DEFF Research Database (Denmark)

    Galiotto, Nicolas; Heiselberg, Per; Knudstrup, Mary-Ann

    2014-01-01

    . In order to increase our chances of success, it is crucial to support and convince building owners to invest in sustainable renovation. In the case of homes, owners are willing to renovate for many other motives than impact on the environment, energy performance and cost savings. It seems therefore...... important to integrate, aside the societal needs, the individual values which might motivate these decision-makers to undertake such a sustainable renovation. A critical review of decision-aid methods and tools, which are susceptible to be integrated in a process of home renovation, is presented......In order to meet the energy use and greenhouse gas emission reduction goals, buildings are required to be built and renovated respecting stricter requirements. While increasingly more new buildings are constructed in a sustainable manner, most of the challenges are still to be overcome...

  17. Application of a Decision Support Tool in Three Renovation Projects

    Directory of Open Access Journals (Sweden)

    Linus Malmgren

    2015-09-01

    Full Text Available Building owners are encouraged to reduce energy use in order to both contribute to national energy-saving goals and reduce the costs of heating and operation. It is important to choose the most optimal renovation measures available so as to achieve cost-effective energy use while maintaining excellent indoor environments, without sacrificing architectural quality or negatively affecting the environment. Building owners and managers often have neither the time nor the expertise required to properly evaluate the available renovation options before making a final decision. Renovation measures are often calculated to repay investments in a short time, rather than taking into account life-cycle costs (LCC, despite the fact that a thoughtful, comprehensive renovation is often more cost-effective in the long run. This paper presents a systematic approach for evaluating different renovation alternatives based on a number of sustainability criteria. The methodology has been verified using three multi-family apartment buildings in Sweden. The benefit of using the proposed methodology is made clear through a comparison between the different renovation alternatives from a sustainability perspective, and will hopefully serve as encouragement to choose renovation measures which involve marginally increased investments but lead to significant environmental and social benefits in the long-term.

  18. Verification of a computational cardiovascular system model comparing the hemodynamics of a continuous flow to a synchronous valveless pulsatile flow left ventricular assist device.

    Science.gov (United States)

    Gohean, Jeffrey R; George, Mitchell J; Pate, Thomas D; Kurusz, Mark; Longoria, Raul G; Smalling, Richard W

    2013-01-01

    The purpose of this investigation is to use a computational model to compare a synchronized valveless pulsatile left ventricular assist device with continuous flow left ventricular assist devices at the same level of device flow, and to verify the model with in vivo porcine data. A dynamic system model of the human cardiovascular system was developed to simulate the support of a healthy or failing native heart from a continuous flow left ventricular assist device or a synchronous pulsatile valveless dual-piston positive displacement pump. These results were compared with measurements made during in vivo porcine experiments. Results from the simulation model and from the in vivo counterpart show that the pulsatile pump provides higher cardiac output, left ventricular unloading, cardiac pulsatility, and aortic valve flow as compared with the continuous flow model at the same level of support. The dynamic system model developed for this investigation can effectively simulate human cardiovascular support by a synchronous pulsatile or continuous flow ventricular assist device.

  19. Simulation of Heat Flow in Computational Method and Its Verification on the Structure and Property of Gray Cast Iron

    Directory of Open Access Journals (Sweden)

    S. K. Shaha

    2010-01-01

    Full Text Available Problem statement: The solidification of materials depends on the cooling rate of the materials which is governed by heat flow in the mould and alloy composition. Solidification rate also affects the structure and properties of the materials. Approach: In the present study, the heat flow of cold set resin bonded sand mould was simulated using JL Analyzer FEM analysis software. To verify the model, the gray cast iron was melted at 1350°C temperature and poured into a resin bonded sand mould at 1300°C. Results: It showed that most of the heat-reserve at the junction of the mould which was nearer to the source of liquid metal and the lowest heat-reserve at the end of the mould. So, the solidification rate was very high at the end of the mould wall whereas it was comparatively low near the sprue of the mould. Conclusion: Finally, depending on the heat-flow through the mould, the solidification rate changed the microstructure from chill, mottled and gray cast iron and hardness changed from 95.1 HRB-78.78 HRB.

  20. Acoustic Properties of a Renovated Building

    Directory of Open Access Journals (Sweden)

    Tomas Januševičius

    2011-02-01

    Full Text Available The article explores the effects of partitions, ceilings and facades on noise insulation in the renovated different buildings. The conducted experiments were aimed at analyzing partitions of 120 mm brick mounted gypsum panels while other walls were 520 mm thick and plastered on both sides. Under natural conditions, sound insulation factors of facades were measured and compared according to comfort classes. The obtained results revealed that thick brick walls of 520 mm insulated the sound of 58 decibels (dB (class B. In contrast, 120 mm brick masonry partition reduced sound only to 48 dB which is class E and agrees with the lowest class of sound insulation. We also calculated the sound insulation factor applying three formulas considering the mass law of sound insulation and comparing it with other previous studies. The paper examines and discusses the findings of the performed calculations and measurements.Article in Lithuanian

  1. Tips for cleanroom construction and renovation.

    Science.gov (United States)

    Mixon, William; Huffman, Lanny

    2009-01-01

    The installation or renovation of a cleanroom is an increasing priority among compounders who, to offer sterile preparations, must comply with the most recent version of United States Pharmacopeia revised General Chapter 797 guidelines. To upgrade their pharmacy facilites, many compounders have worked successfully with a large-scale mechanical engineering firm or a specialized construction company dedicated to cleanroom installation. However, a qualified local mechanical contractor with design capability is a valuable and often overlooked resource for the construction of customized stae-of-the-art cleanrooms. In this report, we describe the installation of such a facility in a busy pharmacy and suggest ways in which compounding pharmacists can identify competent local contractors and control the cost of construction and upgrades. The addition of a cleanroom has enabled The Compounding Pharmacy in Hickory, North Carolina, to achieve accreditation from the Pharmacy Compounding Accreditation Board.

  2. Acoustical components of the Orpheum Theatre renovation

    Science.gov (United States)

    Conant, David A.

    2002-05-01

    The before and after acoustically-important listening conditions and measurements are described for a $14.2 million restoration and renovation of this 1,400-seat grand 1929 Movie Palace-at one time the tallest building in Phoenix. Great care was taken to restore all the acoustically good parts of the original design and to subtly modify the acoustically-troublesome parts (including severely focusing dome and sidewalls) so they looked the same but performed properly. A beautiful playhouse was achieved in 1997 with fine, fixed acoustics and conventional audio reinforcement, a surrounding Italian village, plenty of gilt, moving clouds and sunsets overhead. Today, the venue successfully hosts shows from performance art to ballet to jazz. It was not intended (acoustically) to serve classical music but does so on occasion.

  3. Sustainable renovation concepts for single-family houses

    DEFF Research Database (Denmark)

    Vanhoutteghem, Lies; Tommerup, Henrik M.; Svendsen, Svend

    necessary for the renovation of the house including quotation for the work, financing and management of the contract work. An ideal full-service concept in five phases is proposed, going from initial evaluation of the house, to extensive analyses, proposal for package solutions, coordinated execution......, the financial possibilities of the homeowner etc. Calculation of packages of energy efficient renovation solutions targeted the three segments of houses show that primary energy use and heating bill can be reduced with up to about 75% or a factor 4 corresponding to the level of a new house or better. It seems...... and operation and finally management of the house after renovation....

  4. BUILDING SUSTAINABLE ARCHITECTURAL DESIGN: A RENOVATION PROJECT

    Directory of Open Access Journals (Sweden)

    Hakan ÜNALAN,

    2011-12-01

    Full Text Available Today, the conservation of energy and respect for the natural environment appears to be the most important phenomena in all areas. In this regard, "sustainability" concept emerged and the architectural platform "Sustainable Architecture" is composed of a research subject to the new and permanent. Architecture underlying the "design" as including also the new concept of "sustainable architectural design" has revealed that field. Sustainable architecture "building in-house", "building envelope" and "physical environment" as shown in three different areas of development. Each consisting of three fields that directly affect andconcern. Sustainable architectural design within the scope of this study, "Building Envelope" developments will be discussed. In this context, building envelope, "the new building design" and "existingstructures" as appeared in two different ways. Existing structures, building envelope, sustainable architectural design in the literature in terms of "renovation" is considered within the scope. In terms of energy efficiency and performance (as Energy Performance of Buildings [BEP] with the energy policies of the various measures are being taken to reduce the energy consumption of the new building design. Not been received, but no measures in existing buildings (apartment buildings until 2012, except for heat insulation Remodeling obligation, energy consumption has remained constant. Therefore, the energy consumption of buildings on a sectoral basis is changing in the range 36-25% share of the portion of (Anonim 2011, but can not be reduced. In addition, operating costs of existing buildings and to reduce reliance on energy-environment systems (except for collectors used is noteworthy. In this study the appropriate design of sustainable architecture, renewable energy systems can be integrated into the shell structure will be investigated. In this context, a renovation project of the Department of Architecture at Anadolu

  5. Numerical and experimental verification of a theoretical model of ripple formation in ice growth under supercooled water film flow

    Energy Technology Data Exchange (ETDEWEB)

    Ueno, K; Farzaneh, M [NSERC/Hydro-Quebec/UQAC Industrial Chair on Atmospheric Icing of Power Network Equipment (CIGELE) and Canada Research Chair on Engineering of Power Network Atmospheric Icing (INGIVRE), Universite du Quebec a Chicoutimi, 555 Boulevard de l' Universite, Chicoutimi, Quebec, G7H 2B1 (Canada); Yamaguchi, S [Snow and Ice Research Center, National Research Institute for Earth Science and Disaster Prevention, Nagaoka, 940-0821 (Japan); Tsuji, H [Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka, 816-8580 (Japan)], E-mail: kazuto.ueno@uqac.ca

    2010-04-15

    Little is known about morphological instability of a solidification front during the crystal growth of a thin film of flowing supercooled liquid with a free surface: for example, the ring-like ripples on the surface of icicles. The length scale of the ripples is nearly 1 cm. Two theoretical models for the ripple formation mechanism have been proposed. However, these models lead to quite different results because of differences in the boundary conditions at the solid-liquid interface and liquid-air surface. The validity of the assumption used in the two models is numerically investigated and some of the theoretical predictions are compared with experiments.

  6. James Webb Space Telescope Integrated Science Instrument Module Calibration and Verification of High-Accuracy Instrumentation to Measure Heat Flow in Cryogenic Testing

    Science.gov (United States)

    Comber, Brian; Glazer, Stuart

    2012-01-01

    The James Webb Space Telescope (JWST) is an upcoming flagship observatory mission scheduled to be launched in 2018. Three of the four science instruments are passively cooled to their operational temperature range of 36K to 40K, and the fourth instrument is actively cooled to its operational temperature of approximately 6K. The requirement for multiple thermal zoned results in the instruments being thermally connected to five external radiators via individual high purity aluminum heat straps. Thermal-vacuum and thermal balance testing of the flight instruments at the Integrated Science Instrument Module (ISIM) element level will take place within a newly constructed shroud cooled by gaseous helium inside Goddard Space Flight Center's (GSFC) Space environment Simulator (SES). The flight external radiators are not available during ISIM-level thermal vacuum/thermal testing, so they will be replaced in test with stable and adjustable thermal boundaries with identical physical interfaces to the flight radiators. Those boundaries are provided by specially designed test hardware which also measures the heat flow within each of the five heat straps to an accuracy of less than 2 mW, which is less than 5% of the minimum predicted heat flow values. Measurement of the heat loads to this accuracy is essential to ISIM thermal model correlation, since thermal models are more accurately correlated when temperature data is supplemented by accurate knowledge of heat flows. It also provides direct verification by test of several high-level thermal requirements. Devices that measure heat flow in this manner have historically been referred to a "Q-meters". Perhaps the most important feature of the design of the JWST Q-meters is that it does not depend on the absolute accuracy of its temperature sensors, but rather on knowledge of precise heater power required to maintain a constant temperature difference between sensors on two stages, for which a table is empirically developed during a

  7. Administracion regional de los recursos naturales renovables: corporaciones autonomas regionales

    National Research Council Canada - National Science Library

    Lacouture Danies, Hugues Manuel

    2006-01-01

    En Colombia, los Recursos Naturales Renovables son propiedad de la Nacion, y su administracion corresponde en el nivel regional a las Autoridades Ambientales mediante acciones y procedimientos que van...

  8. Summer residence hall renovations focus on student comfort, environmental sustainability

    OpenAIRE

    DeLauder, Rachel

    2009-01-01

    With the majority of students home for the summer, Virginia Tech Housing Services has undertaken a variety of improvements and renovations in its residence halls aimed at increasing comfort and safety for students, while decreasing overall environmental impact.

  9. Success and fail factors in sustainable real estate renovation projects

    NARCIS (Netherlands)

    Volker, L.

    2011-01-01

    Sustainability remains an important issue for the construction industry. Yet, sustainable real estate developments are still considered as highly ambitious projects. To find out how and why sustainable renovation projects actually became sustainable we systematically evaluated 21 leading Dutch real

  10. Business model development for customer-oriented housing renovation

    NARCIS (Netherlands)

    Mlecnik, E.; Kondratenko, I.; Haavik, T.

    2012-01-01

    Processes for ambitious energyefficient housing renovation are at present often too fragmented between many SMEs and clients have difficulties handling all information. This brings communication, planning, coordination and execution problems. It is also difficult for customers to find single respons

  11. Maintaining Indoor Environmental Quality (IEQ) during Construction and Renovation

    Science.gov (United States)

    ... renovation activities. Sources include drywall, plaster, concrete, soil, wood, masonry, flooring, roofing, and ductwork. Non toxic dusts are irritants and can exacerbate lung conditions such as asthma and chronic obstructive lung ...

  12. Analysis and Comparison of Overheating Indices in Energy Renovated Houses

    DEFF Research Database (Denmark)

    Psomas, Theofanis Ch.; Heiselberg, Per Kvols; Duer, Karsten

    2015-01-01

    The scientific literature offers a number of methods for assessing the likelihood of overheating in buildings. The paper calculates eight well-documented indices for four representative family houses, from moderate and temperate climates, under different renovation processes (66 variants), with t......The scientific literature offers a number of methods for assessing the likelihood of overheating in buildings. The paper calculates eight well-documented indices for four representative family houses, from moderate and temperate climates, under different renovation processes (66 variants...

  13. AFRL Solid Propellant Laboratory Explosive Siting and Renovation Lessons Learned

    Science.gov (United States)

    2010-05-19

    Siting and Renovation Lessons Learned 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) Daniel F . Schwartz (AFRL/RZSP) 5d. PROJECT... Daniel F . Schwartz a. REPORT Unclassified b. ABSTRACT Unclassified c. THIS PAGE Unclassified SAR 35 19b. TELEPHONE NUMBER (include...1 AFRL Solid Propellant Laboratory Explosive Siting and Renovation Lessons Learned Daniel F . Schwartz Air Force Research Laboratory

  14. Evaluation and optimization of secondary water supply system renovation

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Due to pollution in second water supply system (SWSS), nine renovation alternative plans were proposed and comprehensive evaluations of different plan based on Analytical Hierarchy Process (AHP) were presented in this paper. Comparisons of advantages and disadvantages among the plans of SWSS renovations provided solid foundation for selecting the most appropriate plan for engineering projects. In addition, a mathematical model of the optimal combination of renovation plans has been set up and software Lingo was used to solve the model. As a case study, the paper analyzed 15 buildings in Tianjin City. After simulation of the SWSS renovation system, an optimal scheme was obtained, the result of which indicates that 10 out of those 15 buildings need be renovated in priority. The renovation plans selected for each building are the ones ranked higher in the comprehensive analysis. The analysis revealed that the optimal scheme, compared with two other randomly calculated ones, increased the percentage of service population by 19.6% and 13.6% respectively, which significantly improved social and economical benefits.

  15. Neural Pathway of Renovative and Innovative Products Appreciation

    Science.gov (United States)

    Huang, Furong; Chiu, Chiyue; Luo, Jing

    2016-12-01

    According to the level of change an invention makes on existing things and how it overrides people’s mental schemas on established categories, new inventions can be classified into two groups: incremental inventions (i.e., renovations), which make minor improvements on existing designs, and radical inventions (i.e., innovations), which make major developments that enable people to do things they have never been able to do before. Although innovation and renovation are two fundamentally different types of creation that feature new changes ranging from those in product development to those in large scale social changes, and people tend to report higher subjective preferences for incremental inventions compared to radical inventions, the cognitive brain mechanisms underlying the mental representation of these two types of inventions remains unknown. Through the use of innovative and renovative designs as materials, we found that relative to non-creative designs, creative (renovative &innovative) designs enhanced memory or association-related activation in the right parahippocampus. In particular, innovations evoked more activation in the conceptual pathway for representing objects than did renovations, whereas renovations evoked more activation in the motor pathway than innovations. These results suggest that operating experiences may provide advantages for understanding and appreciating creative designs.

  16. Development of nuclear thermal hydraulic verification test and evaluation technology; study on 3-dimension measurement of two-phase flow parameters in subcooled boiling flow

    Energy Technology Data Exchange (ETDEWEB)

    Park, Goon Cherl; Kim, Moon Oh; Cho, Hyung Kyoo; Kim, Seong Jin [Seoul National University, Seoul (Korea)

    2002-04-01

    In this study, the experiments were conducted at different levels of inlet subcooling, flow rate and heat flux in a vertical concentric annulus channel located heater at the center with subcooled boiling conditions of atmosphere pressure and superficial velocity under 1.5m/s. The profiles of void fraction, vapor size, vapor frequency, vapor velocity and IAC were measured by 2 sensor conductivity probe in axially 3 points (L/D{sub h}=90.5,80.1,71.4) and those of liquid velocity by pitot tube. Based on the experiment data subcooled boiling models in MARS and multidimensional code, CFX-4.2 were evaluated was verified for analysis ability of these codes in subcooled boiling. 61 refs., 41 figs., 11 tabs. (Author)

  17. The building stock from perspective of change - renovation roadmap

    Energy Technology Data Exchange (ETDEWEB)

    Airaksinen, M., Email: miimu.airaksinen@vtt.fi

    2012-06-15

    By 2050, population, society and economic structures will have changed several times. The long and short-term goals and objectives concerning our built environment are mutually contradictory. Determining objectives or creating scenarios for the future built environment is fruitless. We should approach the development of the built environment from the perspective of change and improve the flexibility and adaptability of the built environment. For the users, a built environment meeting their basic needs is part of sustainable development. Identified short-range renovation needs include eliminating damp and mould problems, improving energy and eco-efficiency, removing obstacles to mobility and adapting buildings to accommodate the needs of the elderly. Vacated areas and buildings should be recycled and offered a new life supporting a sense of community and service production. Improved energy efficiency reduces greenhouse gas emissions. Instead of renovating individual buildings, renovation of the entire area is recommended. Sustainability in construction translates into favouring recycling and renewable materials and building-specific energy systems using renewable and/or low-emission resources. It is recommended that renovations to improve energy efficiency are scheduled to coincide with other maintenance/ renovations so as to reduce costs. In renovation construction, the role of service improvement is more important than products. Improved services help to identify a solution that fulfils several customer needs, meets financial limitations and can be implemented efficiently. Companies are advised to view renovation construction as an innovative market segment entitled to its own service portfolio. Truths about new building should be discarded and new services developed based on recent study results and new technologies. (orig.)

  18. Swarm Verification

    Science.gov (United States)

    Holzmann, Gerard J.; Joshi, Rajeev; Groce, Alex

    2008-01-01

    Reportedly, supercomputer designer Seymour Cray once said that he would sooner use two strong oxen to plow a field than a thousand chickens. Although this is undoubtedly wise when it comes to plowing a field, it is not so clear for other types of tasks. Model checking problems are of the proverbial "search the needle in a haystack" type. Such problems can often be parallelized easily. Alas, none of the usual divide and conquer methods can be used to parallelize the working of a model checker. Given that it has become easier than ever to gain access to large numbers of computers to perform even routine tasks it is becoming more and more attractive to find alternate ways to use these resources to speed up model checking tasks. This paper describes one such method, called swarm verification.

  19. Modeling in the State Flow Environment to Support Launch Vehicle Verification Testing for Mission and Fault Management Algorithms in the NASA Space Launch System

    Science.gov (United States)

    Trevino, Luis; Berg, Peter; England, Dwight; Johnson, Stephen B.

    2016-01-01

    Analysis methods and testing processes are essential activities in the engineering development and verification of the National Aeronautics and Space Administration's (NASA) new Space Launch System (SLS). Central to mission success is reliable verification of the Mission and Fault Management (M&FM) algorithms for the SLS launch vehicle (LV) flight software. This is particularly difficult because M&FM algorithms integrate and operate LV subsystems, which consist of diverse forms of hardware and software themselves, with equally diverse integration from the engineering disciplines of LV subsystems. M&FM operation of SLS requires a changing mix of LV automation. During pre-launch the LV is primarily operated by the Kennedy Space Center (KSC) Ground Systems Development and Operations (GSDO) organization with some LV automation of time-critical functions, and much more autonomous LV operations during ascent that have crucial interactions with the Orion crew capsule, its astronauts, and with mission controllers at the Johnson Space Center. M&FM algorithms must perform all nominal mission commanding via the flight computer to control LV states from pre-launch through disposal and also address failure conditions by initiating autonomous or commanded aborts (crew capsule escape from the failing LV), redundancy management of failing subsystems and components, and safing actions to reduce or prevent threats to ground systems and crew. To address the criticality of the verification testing of these algorithms, the NASA M&FM team has utilized the State Flow environment6 (SFE) with its existing Vehicle Management End-to-End Testbed (VMET) platform which also hosts vendor-supplied physics-based LV subsystem models. The human-derived M&FM algorithms are designed and vetted in Integrated Development Teams composed of design and development disciplines such as Systems Engineering, Flight Software (FSW), Safety and Mission Assurance (S&MA) and major subsystems and vehicle elements

  20. Energy renovation practices in Danish homes. The influence of energy labels on home renovation practices

    Energy Technology Data Exchange (ETDEWEB)

    Christensen, Toke Haunstrup; Gram-Hanssen, Kirsten [Danish Building Research Institute, Aalborg University, Dr. Neergaards Vej 15, DK-2970 Hoersholm (Denmark); Adjei, Afi [Building Research Establishment Ltd. BRE, Bucknalls Lane, Garston, WD25 9XX Watford (United Kingdom); De Best-Waldhober, Marjolein [Energy research Centre of the Netherlands ECN, Policy Studies, Amsterdam (Netherlands)

    2012-02-15

    Heating of dwellings represents a major policy challenge for the transition to a low carbon society. In Denmark, heating of dwellings represents about 25% of the total Danish final energy consumption and about 13% of the total CO2 emission. The majority of this is related to heating of older dwellings, and as the rate of replacement is low, the main potential for energy saving is to improve the energy efficiency of the existing dwelling stock through energy renovation. This paper provides an analysis of Danish experiences with energy labels (also known as the Energy Performance Certificate, EPC), which indicate the energy efficiency of buildings and include recommendations for improvements. The aim of the EPC is to motivate homeowners to do energy improvements. In Denmark, energy audit schemes date back to the early 1980s and energy rating of houses (energy labelling) was introduced in 1997. The long history of energy audit schemes and energy labelling makes Denmark an interesting case for the study of the experiences with and impact of this kind of policy measure. With the EU Energy Performance of Buildings Directive (EPBD) from 2002, an energy labelling scheme similar to the Danish scheme introduced in 1997 is now in use in all EU member states. The focus of this paper is on the homeowners' experience and use of the EPC and the key research questions are: How do the homeowners understand and use the EPC? Does the EPC have an influence on home energy renovation practices? The analysis is based on results from a survey of Danish homeowners who have purchased a home with an EPC within recent years. The Danish survey is part of the European project IDEAL EPBD, which was funded by the European Commission under the Intelligent Energy Europe programme and run from 2008 to 2011. The results indicate a rather limited influence of the EPC on Danish homeowners' home energy renovation practices. Also, the results show that even though most homeowners find the label

  1. Diffusion dynamics of energy-efficient renovations causalities and policy recommendations

    CERN Document Server

    Müller, Matthias Otto

    2013-01-01

    Focusing on ways that energy-efficient building renovation can be accelerated, this book reviews current literature, offers policy recommendations and proposed regulations and sketches a business model supporting the diffusion of energy-efficient renovations.

  2. Bethune-Cookman University STEM Research Lab. DOE Renovation Project

    Energy Technology Data Exchange (ETDEWEB)

    Thompson, Herbert W. [Bethune-Cookman University, Daytona Beach, FL (United States)

    2012-03-31

    DOE funding was used to renovate 4,500 square feet of aging laboratories and classrooms that support science, engineering, and mathematics disciplines (specifically environmental science, and computer engineering). The expansion of the labs was needed to support robotics and environmental science research, and to better accommodate a wide variety of teaching situations. The renovated space includes a robotics laboratory, two multi-use labs, safe spaces for the storage of instrumentation, modern ventilation equipment, and other “smart” learning venues. The renovated areas feature technologies that are environmentally friendly with reduced energy costs. A campus showcase, the laboratories are a reflection of the University’s commitment to the environment and research as a tool for teaching. As anticipated, the labs facilitate the exploration of emerging technologies that are compatible with local and regional economic plans.

  3. Prerequisites for Successful Strategic Partnerships for Sustainable Building Renovation

    DEFF Research Database (Denmark)

    Jensen, Per Anker; Johansen, Jakob Berg; Thuesen, Christian

    The purpose of this paper is to identify the prerequisites for establishing successful strategic partnerships in relation to renovating buildings sustainably. Establishing strategic partnerships is in the paper seen as a potential way to make building renovation more sustainable in Denmark...... particularly in terms of reducing energy consumption and use of resources and increase productivity. However, until now we have only had a limited number of such partnerships implemented and the few examples that do exist, mostly concern the construction of new buildings. The paper is based on an investigation...... industry and analyses of two exemplary cases the paper suggests prerequisites for establishing successful strategic partnerships for sustainable building renovation. The results show that strategic partnerships are collaborations set up between two or more organizations that remain independent...

  4. Energy renovation of an old single-family house

    DEFF Research Database (Denmark)

    Overgaard, L.L.; Tommerup, Henrik M.; Svendsen, Svend

    2005-01-01

    cost of DKK 157,000. The project has shown that the energy renovation has reduced the gross energy consumption with around 50% from 53,400 to 28,100 kWh per year. This corresponds to a reduction of around 2,500 litre of fuel oil per year or 16,000 DKK per year (assuming a conservative energy price......After having identified a large potential for profitable energy renovation of the existing building stock, a demonstration project was carried out in practice. This paper deals with the methods and results from the demonstration project concerning a 161 m² poorly insulated single-family house built...... in 1927 in DK. Since the project has been carried out and the documentation thus established in only six months from September 2004 to January 2005, an extrapolation method for the measurement results has been used. Both before and after the energy renovation, detailed monitoring of the indoor environment...

  5. The Renovation and Future Capabilities of the Thacher Observatory

    Science.gov (United States)

    O'Neill, Katie; Osuna, Natalie; Edwards, Nick; Klink, Douglas; Swift, Jonathan; Vyhnal, Chris; Meyer, Kurt

    2016-01-01

    The Thacher School is in the process of renovating the campus observatory with a new meter class telescope and full automation capabilities for the purpose of scientific research and education. New equipment on site has provided a preliminary site characterization including seeing and V-band sky brightness measurements. These data, along with commissioning data from the MINERVA project (which uses comparable hardware) are used to estimate the capabilities of the observatory once renovation is complete. Our V-band limiting magnitude is expected to be better than 21.3 for a one minute integration time, and we estimate that milli-magnitude precision photometry will be possible for a V=14.5 point source over approximately 5 min timescales. The quick response, autonomous operation, and multi-band photometric capabilities of the renovated observatory will make it a powerful follow-up science facility for exoplanets, eclipsing binaries, near-Earth objects, stellar variability, and supernovae.

  6. Energy Renovation of Danish Single-Family Houses

    DEFF Research Database (Denmark)

    Mortensen, Andrea

    The PhD project is based on requirements from the European Union to reduce the energy consumption and on current renovation needs of and a huge energy saving potential in the Danish single-family houses from the 1960’s and 1970’s. The project focuses on the barriers for energy renovations...... of these houses and on defining motivation factors for the homeowners. The barriers are many and variating in influence and studies show that both professionals and homeowners are affected. The barriers range from lack of interest and knowledge to uncertainties about among others economy and technical solutions...

  7. How to motivate homeowners to invest in sustainable renovation?

    DEFF Research Database (Denmark)

    Galiotto, Nicolas; Heiselberg, Per; Knudstrup, Mary-Ann

    2014-01-01

    in the renovation sector. Numerous attempts for breaking barriers to sustainable renovation have been made and the impact on the environment including global energy use in buildings is the criterion which has been the main focus in the systems and tools of the last decade, yet without a major accomplishment...... in this paper. Methods have been primarily classified on the basis on whether or not they allow incorporating truthfully decision-makers’ individual values while still improving the process effectiveness. Reviewed tools have been classified as building analysis, optimization and decision making tools...

  8. Development of Facilities Master Plan and Laboratory Renovation Project

    Energy Technology Data Exchange (ETDEWEB)

    Fox, Andrea D

    2011-10-03

    Funding from this grant has allowed Morehouse School of Medicine to complete its first professionally developed, comprehensive campus master plan that is in alignment with the recently completed strategic plan. In addition to master planning activities, funds were used for programming and designing research renovations, and also to supplement other research facility upgrades by providing lighting and equipment. The activities funded by this grant will provide the catalyst for substantial improvement in the School's overall facilities for biomedical education and research, and will also provide much of the information needed to conduct a successful campaign to raise funds for proposed buildings and renovations.

  9. Space planning: a renovation saga involving library users.

    Science.gov (United States)

    Norton, Hannah F; Butson, Linda C; Tennant, Michele R; Botero, Cecilia E

    2013-01-01

    From 2010 to 2012, librarians at the University of Florida Health Science Center Library (HSCL) used an online survey and focus groups to gather user input on preferences for an ideal library space. User input guided the HSCL's renovation plans and put a clear focus on enhancing technology, improving infrastructure, enabling group collaboration, and creating comfortable spaces. Additional communication with users during renovation was vital in ensuring continued usability of nonconstruction spaces and shared understanding of the construction timeline. While specific user suggestions are particular to the HSCL, overall themes and methods for eliciting input will be useful to other libraries undergoing space planning.

  10. Experiences of homeowners regarding nearly zero-energy renovations and consequences for business models

    NARCIS (Netherlands)

    Mlecnik, E.; Straub, A.

    2015-01-01

    Pathways should be explored so that supply-side actors can present integrated renovations to homeowners in such a way that customers are confident with “nearly zero-energy” renovation. Understanding the real wishes of homeowners regarding integrated renovation can help to develop appropriate

  11. 77 FR 74472 - Application to Export Electric Energy; Energia Renovable S.C., LLC

    Science.gov (United States)

    2012-12-14

    ... Application to Export Electric Energy; Energia Renovable S.C., LLC AGENCY: Office of Electricity Delivery and... Renovable) has applied for authority to transmit electric energy from the United States to Mexico pursuant... application from Energia Renovable for authority to transmit electric energy from the United States to...

  12. IEA SHC Task 37: advanced housing renovation - Final report; IEA SHC Task 37: advanced housing renovation - Schlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Hastings, R.

    2010-01-15

    This final report for the Swiss Federal Office of Energy (SFOE) reports on work done within the framework of the International Energy Agency's Solar Heating and Cooling program. The project addressed the energy consumption of residential buildings and their renovation. The report discusses the goals set for the project and reports on five projects that were initiated. These include the refurbishment of apartment buildings to meet the 'Passive House' standard, air-tightness, potential for the use of solar energy, solar facades and the renovation of historic listed buildings. Conclusions resulting from these projects are presented and discussed.

  13. Tenants’ experiences and satisfaction with renovated and energy retrofitted social housing

    DEFF Research Database (Denmark)

    Knudsen, Henrik Nellemose; Jensen, Ole Michael

    studied and verified. The objective of the present project was to evaluate tenants’ experiences and satisfaction with renovated and energy retrofitted social housing. A questionnaire was developed that included questions about perceived indoor climate, possible co-benefits, the renovation process, various...... construction-related measures as well as questions on changed habits after the renovation. The questionnaire was distributed in two large settlements of social housing erected in the 1960s, one representing a case of comprehensive renovation and another representing a case of more moderate renovation...

  14. Post Occupancy Evaluation of 23 Newly Renovated Apartments in Copenhagen

    DEFF Research Database (Denmark)

    Iqbal, Ahsan; Afshari, Alireza; Bergsøe, Niels Christian

    2016-01-01

    The present article is based on a yearlong post occupancy evaluation of indoor air quality of recently renovated 23 apartments in Copenhagen. The apartments are equipped with novel mechanical ventilation systems. The apartments can be categorised in four, according to the design of ventilation...

  15. Supply-side collaboration for energy-efficient renovations

    NARCIS (Netherlands)

    Straub, A.; Mlecnik, E.

    2015-01-01

    The supply side for nearly zero energy building (nZEB) renovation of owner-occupied single-family houses in Europe is suffering from a severe image problem of lack of knowledge and trust, inefficient construction processes, insufficient quality assurance and communication difficulties with home-owne

  16. Supply-side collaboration for energy-efficient renovations

    NARCIS (Netherlands)

    Straub, A.; Mlecnik, E.

    2015-01-01

    The supply side for nearly zero energy building (nZEB) renovation of owner-occupied single-family houses in Europe is suffering from a severe image problem of lack of knowledge and trust, inefficient construction processes, insufficient quality assurance and communication difficulties with home-owne

  17. RESISTANCE OF COATED ELECTRODES SUITABLE FOR RENOVATION OF TILLAGE TOOLS

    OpenAIRE

    2013-01-01

    This article deals with the abrasive wear resistance of additional materials. The resistance of individual materials was figured out by determining a proportional wear resistance on a grinding fabric. Results of the experiment confirmed an increase in welds abrasive wear resistance. Chosen coated electrodes are suitable for the renovation of tillage tools of agricultural machines.

  18. Resource Book for Furniture Renovation, Refinishing and Reupholstering.

    Science.gov (United States)

    Barton, Diane; Robinson, Jay

    This resource book for furniture renovation (refinishing and reupholstering) is one of four resource books developed for use in Code 30 or adult vocational programs in the home furnishings service area. Representative, illustrative, and informative materials contained in the resource book are Furniture Woods, Cuts and Matching Veneers, Wood…

  19. Renovation techniques for fatigue cracked orthotropic steel bridge decks

    NARCIS (Netherlands)

    de Jong, F.B.P.

    2007-01-01

    This dissertation presents the research into renovation techniques for orthotropic steel bridge decks. These techniques are needed to solve fatigue problems in the decks of these bridges, as several fatigue cracks have been detected in the deck structure of these bridges the last decade. A well-know

  20. Renovation of the outside lighting - Bldg. 112 zone

    CERN Multimedia

    GS Department

    2010-01-01

    Due to the renovation of the outside lighting, the traffic will be disrupted along “Route Feynman”. From the water tower (Bldg. 227) to Restaurant Nr. 2 (Bldg. 504) between 18 and 30 August. We recommend great caution. Thank you for your understanding. SEM Group

  1. Energy Renovation of a Typical Danish Single-family House

    DEFF Research Database (Denmark)

    Tommerup, Henrik M.; Svendsen, Svend

    2007-01-01

    In 2006, new tighter energy performance requirements were introduced in Denmark for both new buildings and renovation, including a new classification system for low energy buildings. These demands are based on the directive on Energy Performance of Buildings, the EPBD (2002/91/EC). In general...

  2. Renovating Early Childhood Education Pedagogy: A Case Study in Vietnam

    Science.gov (United States)

    Thao, Dang Phuong; Boyd, Wendy Anne

    2014-01-01

    Since 2003, the Vietnamese government has prioritised curriculum reform efforts and commitment to improving the quality of the national curriculum. The Vietnamese early childhood education renovation has encountered considerable changes and challenges, particularly in the area of pedagogical approaches. Many early childhood teachers continue to…

  3. Post Occupancy Evaluation of 23 Newly Renovated Apartments in Copenhagen

    DEFF Research Database (Denmark)

    Iqbal, Ahsan; Afshari, Alireza

    2016-01-01

    The present article is based on the post occupancy occupants’ perception of indoor air quality of recently renovated 23 residential apartments in Copenhagen. The apartments are equipped with novel mechanical ventilation systems. The apartments can be categorised in four, according to the design o...

  4. ROLLING STOCK RENOVATION AS THE PRIORITY OF ULKRZALIZNYTSYA'S INVESTMENTS

    Directory of Open Access Journals (Sweden)

    N. A. Ghayduk

    2010-06-01

    Full Text Available This article is devoted to the basic sources of investments aimed at the renovation of stock of passenger coaches. Thus the rolling stock that is to be bought must meet the plans of strategic development of «Ukrzaliznytsia» (Ukrainian Railways, their financial possibilities and outlooks of the further market behavior of consumers (passengers.

  5. Supply-side collaboration for energy-efficient renovations

    NARCIS (Netherlands)

    Straub, A.; Mlecnik, E.

    2015-01-01

    The supply side for nearly zero energy building (nZEB) renovation of owner-occupied single-family houses in Europe is suffering from a severe image problem of lack of knowledge and trust, inefficient construction processes, insufficient quality assurance and communication difficulties with

  6. Maintaining High-Performance Schools after Construction or Renovation

    Science.gov (United States)

    Luepke, Gary; Ronsivalli, Louis J., Jr.

    2009-01-01

    With taxpayers' considerable investment in schools, it is critical for school districts to preserve their community's assets with new construction or renovation and effective facility maintenance programs. "High-performance" school buildings are designed to link the physical environment to positive student achievement while providing such benefits…

  7. Value based building renovation - A tool for decision-making and evaluation

    DEFF Research Database (Denmark)

    Jensen, Per Anker; Maslesa, Esmir

    2015-01-01

    is to present a tool - RENO-EVALUE, which can be used as decision support for sustainable renovation projects, and for evaluation, during and after building renovations. The tool is a result from the European Eracobuild project ACES - "A concept for promotion of sustainable retrofitting and renovation in early...... interests and values of the main stakeholders involved in building renovation. It is meant as a basis for dialogue among building professionals and building users and supports formulation of objectives for renovation projects. RENO-EVALUE can also be used for comparing alternative project proposals......Research on the barriers for building renovation in Denmark has revealed that an important obstacle is a lack of simple and holistic tools that can assist stakeholders in prioritisation and decision-making during the early stages of building renovation projects. The purpose of this article...

  8. Verification Games: Crowd-Sourced Formal Verification

    Science.gov (United States)

    2016-03-01

    Government drawings, specifications, or other data included in this document for any purpose other than Government procurement does not in any way...information exchange, and its publication does not constitute the Government’s approval or disapproval of its ideas or findings. REPORT DOCUMENTATION ...DATES COVERED (From - To) JUN 2012 – SEP 2015 4. TITLE AND SUBTITLE VERIFICATION GAMES: CROWD-SOURCED FORMAL VERIFICATION 5a. CONTRACT NUMBER FA8750

  9. Space heating savings via continuous building renovation up to 2050. Network for energy renovation; Varmebesparelse ved loebende bygningsrenovering frem til 2050. Netvaerk for energirenovering

    Energy Technology Data Exchange (ETDEWEB)

    Wittchen, K.B.; Kragh, J.

    2013-03-15

    The report presents analysis of net heat savings related to ongoing building renovations until 2050 if building parts are insulated according to requirements of the Building Regulations 2010 at the time when the building parts anyhow must undergo regular renovation and maintenance or replacement. The analysis is compared with an assessment of the effect of a 100% implementation of the energy requirements of BR10 for renovation / replacement of building components. This comparison provides the ultimate energy saving using more insulation in connection with the planned renovation and replacement. The underlying calculation model is built using data from the Danish Building and Housing Register and statistical data from the Energy Labeling Scheme for building insulation standard and heated area of roof, exterior wall, floor / slab and windows / doors. The report was prepared for the Danish Energy Agency and is targeted at participants in the network for energy renovation, especially the construction industry and agencies, and policy makers. (LN)

  10. Sustainable renovation concepts for single-family houses

    DEFF Research Database (Denmark)

    Vanhoutteghem, Lies; Tommerup, Henrik M.; Svendsen, Svend

    countries are to have competitive power compared to new houses on the future housing market. If the market is able to explain this to the homeowners there is an open market with undreamt-of possibilities. Good technical solutions exist but need to be combined based on the full range of (standard) solutions......, energy efficient renovation will probably still be attractive for the average homeowner. One-stop-shops in the form of full-service providers of energy efficient renovation of singlefamily house are missing in the Nordic countries. This service is vital to open up the market. A one-stop-shop could...... an economy in balance in the sense that the annual payment on a cheap loan, e.g. mortgage refinancing, to finance the investment is not fully offset by the expected annual energy savings. Since, the cost of energy measures today may not correspond to the increased market value of the house, it is important...

  11. PCB i bygninger - afhjælpning, renovering og nedrivning

    DEFF Research Database (Denmark)

    Andersen, Helle Vibeke

    SBi-anvisning 268 beskriver, hvordan PCB-forurening af indeluften afhjælpes, og hvordan PCB håndteres, når man renoverer eller nedriver bygninger med PCB. Uanset om der er tale om afhjælpning, renovering eller nedrivning, kan arbejdet generere PCB-holdigt affald. Anvisningen forklarer derfor......, hvordan affaldet skal håndteres, og hvordan man beskytter mennesker og miljø under arbejdet. Anvisningen er baseret på byggebranchens erfaringer og den aktuelle forskningsbaserede viden om PCB i bygninger. SBi-anvisning 268 afløser den snart fire år gamle SBi-anvisning 242 om renovering af bygninger med...... PCB, som ikke behandlede spørgsmålet om affaldshåndtering....

  12. Defining Sustainability in Relation to the Renovation of Modern Housing

    DEFF Research Database (Denmark)

    Peters, Terri

    2011-01-01

    Summary This paper focuses on comparing practice-based and academic definitions and metrics of “sustainability” as they relate to the transformation of Modern housing in Denmark. Keywords:Sustainability, Renovation, Architecture, Denmark, Modern housing 1. Introduction to the Study Buildings...... and measure sustainability in Denmark. 3. Method and Approach This study aims to create results that can be useful to both academic research in this area and architects in practice. Architects can benefit from knowing what is currently being designed and built, what strategies were used and when in the design...... for example) and post occupancy data to see if designs are performing as predicted. Further study could also involve comparison of emerging, smaller assessment systems to see how they serve sustainability and renovation....

  13. Renovation and Expansion of the Caspary Research Building. Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Grassia, V. L.

    2004-02-07

    Critical to the Hospital's rebuilding efforts have been its public partners at the federal, state, and local government levels who have made a major financial commitment to renovating the Hospital's research infrastructure. To date, the Hospital for Special Surgery (HSS) has been awarded a total of nearly $8.5 million to create and equip new, state-of-the-art laboratories for scientific investigations. The modernization of the Hospital's research facilities was jump-started in 1998 with a $950,000 seed grant from the National Institutes of Health (NIH) to renovate laboratories for immunology research in the Caspary Research Building. Coupled with a matching $5.5 million commitment from HSS, this infusion of NIH funding laid the groundwork for an overhaul of all of the Hospital's research space.

  14. Overheating risk barriers to energy renovations of single family houses

    DEFF Research Database (Denmark)

    Psomas, Theofanis Ch.; Heiselberg, Per Kvols; Duer, Karsten

    2016-01-01

    Highlights •Energy renovations of houses in moderate climates increase overheating risk. •Critical measures are the floor insulation and the improvement of the airtightness. •Decrease of the g value of windows diminishes the intensity and the period of it. •Static method of assessment shows highe...... risk compare to the dynamic method. •Ranking capabilities of overheating indices and average temperatures are analogous....

  15. Development of a method for holistic energy renovation

    DEFF Research Database (Denmark)

    Morelli, Martin

    Development of a method for holistic energy renovation During the last decade, the European Union has worked intensively to improve the energy efficiency in the building sector, aiming at liberation from the use of fossil fuels. The focus has shifted from new energy efficient buildings towards...... building with a new building. Secondly, the design of energy saving measures was assessed whether to re-design, formulate a maintenance plan or assess the durability....

  16. Health outcomes and green renovation of affordable housing.

    Science.gov (United States)

    Breysse, Jill; Jacobs, David E; Weber, William; Dixon, Sherry; Kawecki, Carol; Aceti, Susan; Lopez, Jorge

    2011-01-01

    This study sought to determine whether renovating low-income housing using "green" and healthy principles improved resident health and building performance. We investigated resident health and building performance outcomes at baseline and one year after the rehabilitation of low-income housing using Enterprise Green Communities green specifications, which improve ventilation; reduce moisture, mold, pests, and radon; and use sustainable building products and other healthy housing features. We assessed participant health via questionnaire, provided Healthy Homes training to all participants, and measured ventilation, carbon dioxide, and radon. Adults reported statistically significant improvements in overall health, asthma, and non-asthma respiratory problems. Adults also reported that their children's overall health improved, with significant improvements in non-asthma respiratory problems. Post-renovation building performance testing indicated that the building envelope was tightened and local exhaust fans performed well. New mechanical ventilation was installed (compared with no ventilation previously), with fresh air being supplied at 70% of the American Society of Heating, Refrigerating, and Air-Conditioning Engineers standard. Radon was < 2 picocuries per liter of air following mitigation, and the annual average indoor carbon dioxide level was 982 parts per million. Energy use was reduced by 45% over the one-year post-renovation period. We found significant health improvements following low-income housing renovation that complied with green standards. All green building standards should include health requirements. Collaboration of housing, public health, and environmental health professionals through integrated design holds promise for improved health, quality of life, building operation, and energy conservation.

  17. Renovation and Involution-Paradox of Chinese Literature in Modernity

    Institute of Scientific and Technical Information of China (English)

    XU Yi-bin

    2013-01-01

    With a special matter, Chinese literature has differences with traditional theories from western countries in essence, so that Chinese literature demonstrates its renovation and involution. The main reason is its trends of modernity. The transformation from oversea exchange is very important. This paper mainly explains the specific content of paradox of Chinese literature in mo-dernity, and explores the reasons for differences between China and western countries.

  18. On the Testing of Renovations Inside Historical Opera Houses

    Science.gov (United States)

    Fausti, P.; Prodi, N.

    2002-11-01

    Due to the large number of historical opera houses in Italy, many theatres have been renovated in the past, but still more will undergo major restoration in the near future. Unfortunately in this context, the quality and protection of acoustics is rarely considered as an issue of its own. As a consequence, the renovations are hardly ever accompanied by proper scientific and technical support. In this paper, the acoustical impact of works inside the Teatro Municipale "R.Valli" in Reggio Emilia, including the restoration of the main hall and the construction of a new acoustic shell, will be dealt with. Surveys were held in the theatre before renovation and were repeated with identical procedure and instruments after its completion. By means of a comparative analysis of the architectural project and of acoustical data, the impact of major changes in the theatre can be predicted. It is shown that this approach can help in drafting an operational scheme for safeguarding the acoustics of historical opera houses.

  19. The renovation of the Main Building is approaching completion

    CERN Document Server

    Anaïs Schaeffer

    2011-01-01

    The renovation work under way in the CERN Main Building should be completed by June. From the floors to the ceilings, everything has been done to give this historic building a new lease of life.     Taken in the early 60s, this picture illustrates how light maintenance was a challenge for the auditorium in CERN’s main building.   Nobody who has recently had to shimmy between the cables, ladders and toolboxes deposited around the main hall of Building 500 to get to the post office, the bank or Restaurant 1 can be oblivious to the fact that the ground floor of the Main Building has been getting a face-lift. The renovation work, which started with the first-floor concourse in June 2010, should be finished over the next couple of months. The first-floor renovations, now almost complete, set the tone for the rest of the project. The floor and ceiling, both fitted with special acoustic materials for efficient noise damping, have been completely refurbished and the Building ...

  20. Computed Verification of Drag Prediction for DLR-F6 Wing Body on Unstructured Grids Flow Solver%基于非结构平台的DLR-F6标模阻力预测

    Institute of Scientific and Technical Information of China (English)

    章锦威; 戚姝妮; 郭承鹏; 董军

    2015-01-01

    This paper used the unstructured grids flow solver UNSMB to have a computed verification of the drag force for the DLR –F6 wing body configuration .Selective analysis on grid convergence , lift-drag curves and pressure distribute of the wing body configuration , and compare the computing results with the results of different solversand the wind tunnel data .The analysis results showsthat the computing results ofthe unstructured grids flow solver are close to the results of different solvers and the wind tunnel data ,to a certain extent it has a verification and validation forthe accuracy of computed drag of the solver .%采用自研的非结构网格解算器UNSMB进行了AIAA第三届阻力会议提供的DLR-F6翼身组合体的阻力计算验证。重点分析了模型的网格收敛特性、升阻力曲线以及压力分布等,并把计算结果与阻力预测会议上各个软件的计算结果以及试验数据进行比较,在此基础上分析计算结果。分析结果显示,非结构混合网格解算器的计算结果与各个软件的计算结果以及风洞试验数据吻合度较好,一定程度上验证与确认了解算器的阻力预测精度。

  1. How to Successfully Renovate a Controls System? - Lessons Learned from the Renovation of the CERN Injectors’ Controls Software

    CERN Document Server

    Kruk, G; Kulikova, O; Lezhebokov, V; Pace, M; Pera Mira, P; Roux, E; Wozniak, J Pawel

    2014-01-01

    Renovation of the control system of the CERN LHC injectors was initiated in 2007 in the scope of the Injector Controls Architecture (InCA) project. One of its main objectives was to homogenize the controls software across CERN accelerators and reuse as much as possible the existing modern sub-systems, such as the settings management used for the LHC. The project team created a platform that would permit coexistence and intercommunication between old and new components via a dedicated gateway, allowing a progressive replacement of the former. Dealing with a heterogeneous environment, with many diverse and interconnected modules, implemented using different technologies and programming languages, the team had to introduce all the modifications in the smoothest possible way, without causing machine downtime. After a brief description of the system architecture, the paper discusses the technical and non-technical sides of the renovation process such as validation and deployment methodology, operational applicatio...

  2. Integrated project delivery methods for energy renovation of social housing

    Directory of Open Access Journals (Sweden)

    Tadeo Baldiri Salcedo Rahola

    2015-11-01

    Full Text Available Optimised project delivery methods forsocial housing energy renovationsEuropean Social Housing Organisations (SHOs are currently facing challenging times. The ageing of their housing stock and the economic crisis, which has affected both their finances and the finances of their tenants, are testing their capacity to stick to their aim of providing decent and affordable housing. Housing renovation projects offer the possibility of upgrading the health and comfort levels of their old housing stock to current standards and improve energy efficiency, and this solution also addresses the fuel poverty problems suffered by some tenants. Unfortunately, the limited financial capacity of SHOs is hampering the scale of housing renovation projects and the energy savings achieved. At the same time, the renovation of the existing housing stock is seen as one of the most promising alternative routes to achieving the ambitious CO2 emissions reduction targets set by European authorities – namely, to reduce EU CO2 emissions to 20% below their 1990 levels by 2020. The synergy between European targets and the aims of SHOs has been addressed by the energy policies of the member states, which focus on the potential energy savings achievable by renovating social housing. In fact, the European initiatives have prioritised energy savings in social housing renovations to such an extent that these are referred to as ‘energy renovations’. Energy renovation is therefore a renovation project with higher energy savings target than a regular renovation project.In total, European SHOs own 21.5 million dwellings representing around 9.4% of the total housing stock. Each SHO owns a large number of dwellings, which means there are fewer people to convince of the need to make energy savings through building renovations, maximising the potentially high impact of decisions. Moreover, SHOs are responsible for maintaining and upgrading their properties in order to continue

  3. Accuracy of 4D Flow Measurement of Cerebrospinal Fluid Dynamics in the Cervical Spine: An In Vitro Verification Against Numerical Simulation.

    Science.gov (United States)

    Heidari Pahlavian, Soroush; Bunck, Alexander C; Thyagaraj, Suraj; Giese, Daniel; Loth, Francis; Hedderich, Dennis M; Kröger, Jan Robert; Martin, Bryn A

    2016-11-01

    Abnormal alterations in cerebrospinal fluid (CSF) flow are thought to play an important role in pathophysiology of various craniospinal disorders such as hydrocephalus and Chiari malformation. Three directional phase contrast MRI (4D Flow) has been proposed as one method for quantification of the CSF dynamics in healthy and disease states, but prior to further implementation of this technique, its accuracy in measuring CSF velocity magnitude and distribution must be evaluated. In this study, an MR-compatible experimental platform was developed based on an anatomically detailed 3D printed model of the cervical subarachnoid space and subject specific flow boundary conditions. Accuracy of 4D Flow measurements was assessed by comparison of CSF velocities obtained within the in vitro model with the numerically predicted velocities calculated from a spatially averaged computational fluid dynamics (CFD) model based on the same geometry and flow boundary conditions. Good agreement was observed between CFD and 4D Flow in terms of spatial distribution and peak magnitude of through-plane velocities with an average difference of 7.5 and 10.6% for peak systolic and diastolic velocities, respectively. Regression analysis showed lower accuracy of 4D Flow measurement at the timeframes corresponding to low CSF flow rate and poor correlation between CFD and 4D Flow in-plane velocities.

  4. Occupational exposure to asbestos during renovation of oil-shale fuelled power plants in Estonia.

    Science.gov (United States)

    Kangur, Maie

    2007-01-01

    Many thousands of tonnes of asbestos were used in buildings in the past, especially for thermal insulation of pipes and boilers in power plants. Occupational exposure to asbestos dust now mainly occurs during demolition, renovation and routine maintenance activities. The objective of this study was to evaluate occupational exposure to airborne asbestos during renovation of solid oil-shale fuelled power plants carried out in 2001-2003. Air monitoring inside and outside of the renovation area was performed. The concentration of airborne fibres in the working environment increased during renovation but the valid limit value (0.1 fibres/cm(3)) was not exceeded.

  5. Investigation of Contemporary Performance Measurement Systems for Production Management of Renovation Projects

    Directory of Open Access Journals (Sweden)

    Yash Singh

    2014-01-01

    Full Text Available Renovation projects exhibit complex characteristics due to the presence of constraints that lead to cost and schedule overruns. Numerous researchers have concluded that the performance of renovation projects is typically lower than that of new construction projects. This paper discusses the initial phases of a research conducted at Michigan State University, which focused on developing a framework for production management of renovation projects. The emphasis of this paper is on the findings from literature review and interviews, pertinent to performance measurement in renovation projects that led to the framework development. However, the framework development and the framework itself have not been discussed. This paper primarily addresses two questions: (1 what are the complexities of renovation projects that lead to underperformance in cost, time, and quality? and (2 what are the limitations of state-of-the-art construction performance measurement systems for managing production in renovation projects? Interviews of 10 construction companies were conducted to identify current practices of production management in renovation projects. This research observed a lack of a formal production management process in renovation projects, with a limited use of performance measurement systems. The research identified essential attributes for avoiding schedule and cost overruns on renovation projects.

  6. Numerical simulation and verification on laminar flow between two parallel flat plates based on SPH method%基于SPH方法的两平行平板间层流的数值模拟及验证

    Institute of Scientific and Technical Information of China (English)

    徐国宾; 王永鹏; 高仕赵; 刘昉

    2011-01-01

    Based on the basic principle of smoothed particle hydrodynamics ( SPH ) method, the paper gave 2 - D SPH Fortran program to make numerical simulations for Poiseuille flow and Couette flow which are Laminar Flow between two parallel flat plates after a comprehensive consideration of several kinds of settings on solution conditions. Compared SPH with theoretical analysis solution and simulation results which use Flow-3D numerical simulation software, this paper discovers that they are very anastomosis. The results realized a verification for the SPH mathematical model and 2 - D SPH Fortran program, supplied theoretical support and laid a good foundation for the use and development of SPH in the future.%基于SPH方法的基本原理,综合考虑了对各种定解条件的设置,用Fortran语言独立编写了一套用于模拟两平行平板间层流的SPH二维计算程序,并应用于泊肃叶流和库埃特流的数值模拟之中,将模拟结果与理论解析解和通过Flow -3D软件数值模拟得到的数值结果进行对比,分析表明三种方法得到的计算结果非常吻合,从而实现了对SPH数学模型和SPH计算程序的验证,为SPH方法的进一步发展和广泛应用奠定了一定的基础.

  7. Verification Account Management System (VAMS)

    Data.gov (United States)

    Social Security Administration — The Verification Account Management System (VAMS) is the centralized location for maintaining SSA's verification and data exchange accounts. VAMS account management...

  8. Simulation Environment Based on the Universal Verification Methodology

    CERN Document Server

    Fiergolski, Adrian

    2016-01-01

    Universal Verification Methodology (UVM) is a standardized approach of verifying integrated circuit designs, targeting a Coverage-Driven Verification (CDV). It combines automatic test generation, self-checking testbenches, and coverage metrics to indicate progress in the design verification. The flow of the CDV differs from the traditional directed-testing approach. With the CDV, a testbench developer, by setting the verification goals, starts with an structured plan. Those goals are targeted further by a developed testbench, which generates legal stimuli and sends them to a device under test (DUT). The progress is measured by coverage monitors added to the simulation environment. In this way, the non-exercised functionality can be identified. Moreover, the additional scoreboards indicate undesired DUT behaviour. Such verification environments were developed for three recent ASIC and FPGA projects which have successfully implemented the new work-flow: (1) the CLICpix2 65 nm CMOS hybrid pixel readout ASIC desi...

  9. Simulation Environment Based on the Universal Verification Methodology

    CERN Document Server

    AUTHOR|(SzGeCERN)697338

    2016-01-01

    Universal Verification Methodology (UVM) is a standardized approach of verifying integrated circuit designs, targeting a Coverage-Driven Verification (CDV). It combines automatic test generation, self-checking testbenches, and coverage metrics to indicate progress in the design verification. The flow of the CDV differs from the traditional directed-testing approach. With the CDV, a testbench developer, by setting the verification goals, starts with an structured plan. Those goals are targeted further by a developed testbench, which generates legal stimuli and sends them to a device under test (DUT). The progress is measured by coverage monitors added to the simulation environment. In this way, the non-exercised functionality can be identified. Moreover, the additional scoreboards indicate undesired DUT behaviour. Such verification environments were developed for three recent ASIC and FPGA projects which have successfully implemented the new work-flow: (1) the CLICpix2 65 nm CMOS hybrid pixel readout ASIC desi...

  10. Verification of ceramic structures

    NARCIS (Netherlands)

    Behar-Lafenetre, S.; Cornillon, L.; Rancurel, M.; Graaf, D. de; Hartmann, P.; Coe, G.; Laine, B.

    2012-01-01

    In the framework of the "Mechanical Design and Verification Methodologies for Ceramic Structures" contract [1] awarded by ESA, Thales Alenia Space has investigated literature and practices in affiliated industries to propose a methodological guideline for verification of ceramic spacecraft and instr

  11. Analysis of the quality renovated continuous steel casting roller

    Indian Academy of Sciences (India)

    J Viňáš; J Brezinová; A Guzanová

    2013-06-01

    This paper presents the possibility of restoration of worn contact surfaces of rollers for continuous casting of steel. Permanent effort of steel producers to extend the lifespan of these components requires the implementation of new filler materials or modifying technological renovation processes to reduce the economic costs. This matter seems to be very important for the world leaders in steel production, e.g., ArcelorMittal, Tata Steel, but also for smaller concerns such as Magnitogorsk Iron and Steel Works, Salzgitter, etc. Renovation of continuous steel casting rollers, made of X12Cr13 EN 10088-1-97, was realised using submerged arc surfacing technology. Worn surface of roller was machined and surfaced using one interlayer and two cover layers. The quality of deposited layers was verified using non-destructive and destructive tests. The influence of filler material on the tribological properties of contact surfaces of deposited layers was analysed by abrasive wear test. Studies were made in the influence of surfacing parameters on cladding metal mixing (mixed) with base metal and also influence of heat introduced by welding using metallographic analysis. The experiments confirmed very good wear resistance of the applied filler metal due to dispersion strengthening caused by finely dispersed carbides and nitrides in the weld coating. The measures to be taken into account in renovation of rollers using hard surfacing, as well as the development of research in this area were also given. The experiments have confirmed that parameters used are suitable for studying filler materials.

  12. Post Occupancy Evaluation of 23 Newly Renovated Apartments in Copenhagen

    DEFF Research Database (Denmark)

    Iqbal, Ahsan; Afshari, Alireza

    2016-01-01

    The present article is based on the post occupancy occupants’ perception of indoor air quality of recently renovated 23 residential apartments in Copenhagen. The apartments are equipped with novel mechanical ventilation systems. The apartments can be categorised in four, according to the design...... of ventilation systems. The analysis in present article is based on occupants’ perception of the temperature, indoor air quality and energy consumptions of their apartments. The study shows the perception of occupants of first six months of post occupancy. The study was carried out by conducting interviews...

  13. Energy-efficient Renovation of a Real Estate in AUSTRIA

    Directory of Open Access Journals (Sweden)

    Korjenic Azra

    2015-11-01

    Full Text Available An action have cities worldwide, due to urbanization. More than 70 percent of people in Europe live in cities, where 70 percent of the energy consumed. Without adequate measures, a rapidly growing city is at risk in by overloading the infrastructure, threats to water, energy, pollution, logistical bottlenecks and lack of housing. This paper describes an energy-efficient renovation or expansion planning a real estate in Vorarlberg, Austria. The settlement was analysed in more detail here, it involves the city Dornbirn- part Shor. The study investigated how to extend this settlement energy efficient and what feed for factors in the assessment.

  14. Applications of the renewable energies; Aplicaciones de las energias renovables

    Energy Technology Data Exchange (ETDEWEB)

    Gomez Rocha, Luis Martin [Comision Nacional para el Ahorro de Energia, Mexico, D.F. (Mexico)

    2001-07-01

    The solar energy manifests itself in different forms and its application has been fundamental for the humankind development. These forms are known as renewable energies, since they are energy forms that are renewed or remade with time or that are so abundant on Earth, that they will last for hundreds or thousands of years, either we use them or not. The main advantage of the utilization of the renewable energies in comparison with hydrocarbons is the one of having smaller impact on the environment, which brings about the conservation of nonrenewable resources, and to postpone its exhaustion. They allow the distributed generation, diminishing the power losses in the transmission and distribution systems, which increases the overall efficiency. In addition they can be the drive for regional development and generation of employment, because when having applications in remote zones and being a field still not completely developed in Mexico, the possibility exists of enabling professionals and technicians. From the point of view of the power sector, the renewable energies extend the supply and availability of energy, making more flexible and independent the operation and reliability of the national power system. [Spanish] La energia solar se manifiesta de diversas formas y su aplicacion ha sido fundamental para el desarrollo de la humanidad. A estas formas se les conoce como energias renovables, ya que son formas de energia que se van renovando o rehaciendo con el tiempo o que son tan abundantes en la tierra, que perduraran por cientos o miles de anos, las usemos o no. La principal ventaja del aprovechamiento de las energias renovables en comparacion con los hidrocarburos es la de tener menor impacto al medio ambiente, lo que trae consigo la conservacion de recursos no renovables, y posponer su termino. Permiten la generacion distribuida, disminuyendo las perdidas energeticas en los sistemas de transmision y distribucion, lo que incrementa la eficiencia general. Ademas

  15. Energy-efficient Renovation of a Real Estate in AUSTRIA

    Science.gov (United States)

    Korjenic, Azra; Vašková, Anna

    2015-11-01

    An action have cities worldwide, due to urbanization. More than 70 percent of people in Europe live in cities, where 70 percent of the energy consumed. Without adequate measures, a rapidly growing city is at risk in by overloading the infrastructure, threats to water, energy, pollution, logistical bottlenecks and lack of housing. This paper describes an energy-efficient renovation or expansion planning a real estate in Vorarlberg, Austria. The settlement was analysed in more detail here, it involves the city Dornbirn- part Shor. The study investigated how to extend this settlement energy efficient and what feed for factors in the assessment.

  16. Les energies renovables a Espanya. Revolució o miratge?

    OpenAIRE

    Tordera Sánchez-Camacho, Salvador

    2010-01-01

    Les tecnologies anomenades netes, entre les que es compten les energies renovables, han passat de ser un tema exclusiu dels defensors del medi ambient o els investigadors científics, per a esdevenir el que molts analistes consideren com un nou motor de creixement comercial i econòmic. Els més agosarats hi veuen la primera passa cap a una reestructuració total del model econòmic postindustrial. Hi ha força consens en què un creixement sostenible i respectuós amb el planeta és l'única solució p...

  17. El desarrollo sostenible y los recursos naturales no renovables.

    OpenAIRE

    Vargas Pimiento, Elkin

    2011-01-01

    El presente artículo se compone de los siguientes aspectos:-La caracterización de los recursos naturales no renovables como objeto de estudio en la disciplina económica, mostrando su importancia para el desarrollo de la civilización industrial y la calidad de vida y advirtiendo que se trata de recursos que existen en una cantidad limitada, localizados en las parles más externas de la corteza terrestre, que su escasez es función del avance tecnológico y que su explotación y utilización inadecu...

  18. 40 CFR 745.326 - Renovation: State and Tribal program requirements.

    Science.gov (United States)

    2010-07-01

    ... sampling technician training programs. (ii) Procedures and requirements for the certification of renovators and dust sampling technicians. (iii) Procedures and requirements for the certification of individuals... convenience of the user, the added text is set forth as follows: § 745.326 Renovation: State and Tribal...

  19. Refurbishment of the power supply and NMR systems; Renovation des alimentations et du systeme RMN

    Energy Technology Data Exchange (ETDEWEB)

    Dugay, G. [Grand Accelerateur National d`Ions Lourdes (GANIL), 14 - Caen (France)] [and others

    1998-12-31

    This paper summarises some of the first renovation performed on GANIL power converters, their control system and on magnetic field measurements. Among numerous actions undertaken the most important four, mentioned in the report are: remote control interfaces; current catchers; pulsed supplies; RMN system renovation 4 refs., 2 figs.

  20. Opportunities and Barriers related to Supply Chain Collaboration for Delivering Integrated Single-Family Home Renovations

    NARCIS (Netherlands)

    Mlecnik, E.; Kondratenko, I.; Haavik, T.

    2013-01-01

    Single-family home renovations often show deficiencies in project management. There might be a market addressing house owners who would prefer integrated renovation services and clear responsibilities. Companies that would respond to these client’s needs would have a clear market potential, particul

  1. 45 CFR 1309.10 - Applications for the purchase, construction and major renovation of facilities.

    Science.gov (United States)

    2010-10-01

    ... available for a playground and for parking). If incidental alterations and renovations or major renovations...)(C)) and its implementing regulations (40 CFR parts 1500 through 1508), as well as a report showing the results of tests for environmental hazards present in the facility, ground water, and soil...

  2. The Effects of an Education Program on Home Renovation for Fall Prevention of Korean Older People

    Science.gov (United States)

    Jang, Miseon; Lee, Yeunsook

    2015-01-01

    This study aims to verify the effects of an education program on home renovation for fall prevention among older people, more specifically fall efficacy and home renovation intentions. A quasiexperimental study with nonequivalent control and comparative groups was conducted to demonstrate the effects of the education. A total of 51 older people…

  3. Advanced verification topics

    CERN Document Server

    Bhattacharya, Bishnupriya; Hall, Gary; Heaton, Nick; Kashai, Yaron; Khan Neyaz; Kirshenbaum, Zeev; Shneydor, Efrat

    2011-01-01

    The Accellera Universal Verification Methodology (UVM) standard is architected to scale, but verification is growing and in more than just the digital design dimension. It is growing in the SoC dimension to include low-power and mixed-signal and the system integration dimension to include multi-language support and acceleration. These items and others all contribute to the quality of the SOC so the Metric-Driven Verification (MDV) methodology is needed to unify it all into a coherent verification plan. This book is for verification engineers and managers familiar with the UVM and the benefits it brings to digital verification but who also need to tackle specialized tasks. It is also written for the SoC project manager that is tasked with building an efficient worldwide team. While the task continues to become more complex, Advanced Verification Topics describes methodologies outside of the Accellera UVM standard, but that build on it, to provide a way for SoC teams to stay productive and profitable.

  4. Development of nuclear thermal hydraulic verification tests and evaluation technology - Development of a sensor for two-phase flow measurement using impedance method

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Moo Whan; Kang, Hie Chan; Kwon, Jung Tae; Huh, Deok; Yang, Hoon Cheul [Pohang University of Science and Technology, Pohang (Korea)

    2000-04-01

    Impedance method was carried out to design the electrode that can measure the void fraction of the bubbly flow in pool reservoir. To find out the optimum electrode shape, Styrofoam-Simulator tests were performed in a specially designed acrylic reservoir. Three kinds of electrodes were designed to compare the measuring characteristics of water-air flow. The resistance increased with the increase of the void fraction and the capacitance decreased with the increase of the void fraction. The resistance is a main parameter to express the nature of the water-air flow in impedance method. Almost of impedance values come out from the resistance. The degree of deviation from the mean-resistance values showed reasonable results. Electrode type-I expressed excellent results among the three electrode shapes. The sensor developed can simultaneously measure the void fraction and the water level. 7 refs., 51 figs., 4 tabs. (Author)

  5. Energy renovation of the apartment building Langkaerparken, Tilst, AArhus; Denmark; Energioptimering af etageboligblok Langkaerparken, Tilst, AArhus

    Energy Technology Data Exchange (ETDEWEB)

    Heiselberg, P.

    2010-06-15

    The project's aim was to develop a method and examples of design of energy extensive renovations (low energy class 1) to stimulate energy conservation and increased use of renewable energy in existing buildings. The present report deals with energy renovation of an apartment housing estate. The focus has been to choose simple solutions that do not require large technical knowledge by the residents or operational staff. The project shows that it currently is not profitable to renovate for energy low energy class 2, 1 or 0. With a lifespan of 30 years, however, renovation to low energy class 2 will be viable. Should it be viable for the residents to energy renovate more, financial support is needed. (ln)

  6. Identification of residual leukemic cells by flow cytometry in childhood B-cell precursor acute lymphoblastic leukemia: verification of leukemic state by flow-sorting and molecular/cytogenetic methods

    OpenAIRE

    2012-01-01

    Reduction in minimal residual disease, measured by real-time quantitative PCR or flow cytometry, predicts prognosis in childhood B-cell precursor acute lymphoblastic leukemia. We explored whether cells reported as minimal residual disease by flow cytometry represent the malignant clone harboring clone-specific genomic markers (53 follow-up bone marrow samples from 28 children with B-cell precursor acute lymphoblastic leukemia). Cell populations (presumed leukemic and non-leukemic) were flow-s...

  7. SSN Verification Service

    Data.gov (United States)

    Social Security Administration — The SSN Verification Service is used by Java applications to execute the GUVERF02 service using the WebSphere/CICS Interface. It accepts several input data fields...

  8. Voltage verification unit

    Science.gov (United States)

    Martin, Edward J.

    2008-01-15

    A voltage verification unit and method for determining the absence of potentially dangerous potentials within a power supply enclosure without Mode 2 work is disclosed. With this device and method, a qualified worker, following a relatively simple protocol that involves a function test (hot, cold, hot) of the voltage verification unit before Lock Out/Tag Out and, and once the Lock Out/Tag Out is completed, testing or "trying" by simply reading a display on the voltage verification unit can be accomplished without exposure of the operator to the interior of the voltage supply enclosure. According to a preferred embodiment, the voltage verification unit includes test leads to allow diagnostics with other meters, without the necessity of accessing potentially dangerous bus bars or the like.

  9. Feature-Aware Verification

    CERN Document Server

    Apel, Sven; Wendler, Philipp; von Rhein, Alexander; Beyer, Dirk

    2011-01-01

    A software product line is a set of software products that are distinguished in terms of features (i.e., end-user--visible units of behavior). Feature interactions ---situations in which the combination of features leads to emergent and possibly critical behavior--- are a major source of failures in software product lines. We explore how feature-aware verification can improve the automatic detection of feature interactions in software product lines. Feature-aware verification uses product-line verification techniques and supports the specification of feature properties along with the features in separate and composable units. It integrates the technique of variability encoding to verify a product line without generating and checking a possibly exponential number of feature combinations. We developed the tool suite SPLverifier for feature-aware verification, which is based on standard model-checking technology. We applied it to an e-mail system that incorporates domain knowledge of AT&T. We found that feat...

  10. Standard Verification System (SVS)

    Data.gov (United States)

    Social Security Administration — SVS is a mainframe program that accesses the NUMIDENT to perform SSN verifications. This program is called by SSA Internal applications to verify SSNs. There is also...

  11. [Development of software for the verification of patient flow through a daily clinical environment by use of the radiology information system (RIS)].

    Science.gov (United States)

    Nose, Hideo; Shiraishi, Junji

    2012-01-01

    In order to manage relationship between patients' movements and operating efficiency, we developed a special software which can make patient flow visible on a display monitor by use of actual data obtained from the radiology information system (RIS). In this software, a simple floor map of the radiology department in our hospital was drawn on the monitor and each patient was indicated with a small figure. This software was developed with commercialized computer software [Excel 2007 visual basic applications (VBA) Microsoft]. Movements of the patient figures were simulated by use of actual time data such as registration of radiology department, and start and ending time of examinations. The patient figures were moved along with predetermined flow lines every second. The movements of the patient figures were controlled by several buttons (i.e., play and stop) and setting switches for determining reproduction date and time. In conclusion, by use of this software, the patient flows could be analyzed systematically by checking efficient operation such as average waiting time of the patients and/or standby time of radiological technologists.

  12. Implementation of unified power flow controller and verification for transmission capability improvement; UPFC shukusho model kaihatsu to soden kino kojo koka no kensho

    Energy Technology Data Exchange (ETDEWEB)

    Kato, M.; Morioka, Y.; Nakahigashi, Y. [Kansai Electric Power Co. Inc., Osaka (Japan); Mishima, Y. [Tokyo Electric Power Co. Inc., Tokyo (Japan); Nakachi, Y. [Chubu Electric Power Co. Inc., Nagoya (Japan); Asada, M. [Central Research Institute of Electric Power Industry, Tokyo (Japan); Tokuhara, K.; Akamatsu, M.; Furuta, M. [Mitsubishi Electric Corp., Tokyo (Japan)

    1998-10-01

    This paper describes a control method and system configuration of UPFC (Unified Power Flow Controller). UPFC is one of the promising power electronics equipments because it is an extremely flexible power controller capable of controlling all of the transmission line valiables (voltage, impedance and voltage phase angle). Due to the control flexibility, however, it is important to select a proper control scheme corresponding to the purpose. Under the research project for the reinforcement technology of electric power interconnection, a miniature model of UPFC for the real time analog simulator was developed. Series side of UPFC has three control modes(perpendicular voltage control, impedance control and voltage angle control). It is used for power flow control and/or power system stabilizing control. Shunt side is used for voltage control or reactive power control in addition to compensating the power required from series side. Various tests were performed to compare control modes and the perpendicular voltage control is proposed as the simplest and most practical method because the capacity of the shunt compensator is minimized and power flow control sensitivity is maintained over a wide range of angle. 7 refs., 16 figs., 2 tabs.

  13. Renewable energy and technological development; Energia renovable y desarrollo tecnologico

    Energy Technology Data Exchange (ETDEWEB)

    Covarrubias Ramos, Rogelio [Fideicomiso para el ahorro de energia, (Mexico)

    2007-06-15

    In this presentation is widely described the work carried out by the Trust Fund for Electrical Energy Savings (FIDE) with reference to renewable energy foster. In the first part, it is found the FIDE's mission, which is focused on achieving the efficient use of the energy. Then, there are quiet briefly described the processes -carried out by the FIDE- in favour of the groundbreaking technology that achieves to decrease the energy squandering. In addition, there are mentioned different means boosting the energy savings. Then, there are described the issues the energy system should change in order to improve the actual situation of many Mexicans. There are briefly mentioned not only the environmental but also the social benefits of the use of renewable energy; besides, there are given the necessary elements in order to make it possible. Then, there are explained why the use of renewable energy would be profitable. Finally, it is described the methodology that should be followed in case it is wanted to find sponsors up to 100% for a project related to improvement of the energy production. [Spanish] Esta presentacion describe ampliamente la labor que realiza el Fideicomiso para el ahorro de energia (FIDE) en relacion con el fomento de la energia renovable, asi como el desarrollo de tecnologias que refuercen el uso de este tipo de energia. En la primera parte, se encuentra la mision del FIDE, que se enfoca en lograr que el uso de la energia sea apropiado. Enseguida, de forma breve se describen los procesos que realiza el FIDE en favor de la tecnologia innovadora que haga decrecer el dispendio de energia. Luego, se explican las aspectos endebles del sistema energetico de Mexico. Se describen escuetamente los beneficios, no solo ambientales sino tambien sociales, del uso de energia renovable; ademas, se mencionan los elementos necesarios para que esto pueda lograrse. Mas adelante, se dan las razones por las que para Mexico seria rentable el uso de energia renovable

  14. A Tool to Evaluate Different Renovation Alternatives with Regard to Sustainability

    Directory of Open Access Journals (Sweden)

    Kristina Mjörnell

    2014-07-01

    Full Text Available In Sweden and in other countries, building owners are encouraged to help reduce energy consumption, both in order to contribute to national energy saving goals and, in terms of their own interests, to reduce the costs of heating and operation of the building. However, it is important to pursue the most optimal strategy available so as to achieve cost-effective energy usage while simultaneously maintaining excellent indoor environments, without sacrificing the architectural quality or negatively affecting the environment. Building managers often do not have the time or expertise required to make a proper evaluation of the available options before making a final decision. Renovation measures are often considered in the light of repaying investments in a short time rather than taking into account life cycle costs, despite the fact that a thoughtful, comprehensive renovation is often more cost-effective in the long run. This article presents a systematic approach for evaluating different renovation alternatives based on sustainability criteria. A methodology has been developed to evaluate different renovation alternatives from environmental, economic, and social perspectives. The benefit of using the proposed methodology is that building managers who face a major renovation work are provided with a clear comparison between the different renovation options, viewed from a sustainability perspective, this may facilitate, in the long run, a culture in which renovation measures which involve marginally increased costs, but are seen to lead to significant environmental and social benefits, will be considered and carried out.

  15. Methods of Assessment of Variants of Technical and Technological Renovation under Modern Conditions

    Directory of Open Access Journals (Sweden)

    Shevchuk Larysa M.

    2013-11-01

    Full Text Available The article marks out stages of planning of the moment of renovation, considers an algorithm of selection of the best variant of renovation out of alternative variants with consideration of such aspects as the degree of risk of each investment project, financial capabilities and economic efficiency of renovation. The article studies the scheme of analysis of alternative variants of technical and technological renovation, which includes preliminary, financial and economic, technical and other types of analysis. The article forms an economic model of assessment of introduction of a new technology at an enterprise moving by the technological scheme of development and realisation of novelty; it calculates expenses (engineering and design, material, technical and personnel training costs and identifies economic possibilities of an enterprise on the conduct of renovation. In the result it allocates the indicator of realisation of a new technology in general by an aggregate group of factors. Due to absence of indicators of assessment of efficiency of renovation adapted to market conditions, the article offers to calculate the indicator of assessment of efficiency of investing into renovation, showing what portion of the investment is returned in the form of profit during one period of planning.

  16. Mechanistic Model for Ash Deposit Formation in Biomass Suspension Firing. Part 1: Model Verification by Use of Entrained Flow Reactor Experiments

    DEFF Research Database (Denmark)

    Hansen, Stine Broholm; Jensen, Peter Arendt; Jappe Frandsen, Flemming

    2017-01-01

    Two models for deposit formation in suspension firing of biomass have been developed. Both models describe deposit buildup by diffusion and subsequent condensation of vapors, thermophoresis of aerosols, convective diffusion of small particles, impaction of large particles, and reaction. The models...... used to describe the deposit formation rates and deposit chemistry observed in a series of entrained flow reactor (EFR) experiments using straw and wood as fuels. It was found that model #1 was not able to describe the observed influence of temperature on the deposit buildup rates, predicting a much...

  17. An Full-flow Verification Method of Asynchronous CircuitBased on FPGA%一种异步电路设计的FPGA全流程验证方法

    Institute of Scientific and Technical Information of China (English)

    王康; 黄乐天; 李广军

    2014-01-01

    以往异步电路在FPGA上的设计验证采用 HDL设计的M uller门搭建电路,在实现时需要手动布局布线来完成时序约束,设计繁琐复杂。对此完善了异步电路设计平台Balsa与FPGA设计工具相结合的设计验证流程,采用四相双轨延迟不敏感的握手协议,避免了手动布局布线的繁琐步骤。同时,在不同FPGA平台间具有良好的可移植性。重点设计了遵循异步握手协议的输入电路,完成了行为级到板级的全流程设计及验证。%Asynchronous circuit was designed and verified by the Muller gate designed by HDL on FPGAs previously ,and it was implemented with manual P&R to accomplish timing constraint ,which is so complex .In this paper ,the flow combining Balsa asynchronous circuits design platform and Xilinx FPGA P&R tools was perfected . The four phase dual-track handshake protocol was used to avoid the complex flow of manual P&R and this design has well performance of transplant . This paper focused on the design of the input circuit which follows the asynchronous handshake protocol and completed a behavioral level to board-level design and verification of the whole process .

  18. Identification of residual leukemic cells by flow cytometry in childhood B-cell precursor acute lymphoblastic leukemia: verification of leukemic state by flow-sorting and molecular/cytogenetic methods

    DEFF Research Database (Denmark)

    Obro, Nina F; Ryder, Lars P; Madsen, Hans O

    2012-01-01

    Reduction in minimal residual disease, measured by real-time quantitative PCR or flow cytometry, predicts prognosis in childhood B-cell precursor acute lymphoblastic leukemia. We explored whether cells reported as minimal residual disease by flow cytometry represent the malignant clone harboring ...

  19. Plasmodium species: master renovators of their host cells.

    Science.gov (United States)

    de Koning-Ward, Tania F; Dixon, Matthew W A; Tilley, Leann; Gilson, Paul R

    2016-08-01

    Plasmodium parasites, the causative agents of malaria, have developed elaborate strategies that they use to survive and thrive within different intracellular environments. During the blood stage of infection, the parasite is a master renovator of its erythrocyte host cell, and the changes in cell morphology and function that are induced by the parasite promote survival and contribute to the pathogenesis of severe malaria. In this Review, we discuss how Plasmodium parasites use the protein trafficking motif Plasmodium export element (PEXEL), protease-mediated polypeptide processing, a novel translocon termed the Plasmodium translocon of exported proteins (PTEX) and exomembranous structures to export hundreds of proteins to discrete subcellular locations in the host erythrocytes, which enables the parasite to gain access to vital nutrients and to evade the immune defence mechanisms of the host.

  20. Potential heat savings during ongoing renovation of buildings until 2050

    DEFF Research Database (Denmark)

    Wittchen, Kim Bjarne; Kragh, Jesper; Aggerholm, Søren

    need renovation anyway due to the building materials used having reached the end of their service life. The analyses are compared with an evaluation of the effect of a 100 % compliance with the requirements as this constitutes the ultimative energy savings in combination with planned building...... information about insulation level, building component areas, i.e. roofs, external walls, floors and windows/doors, per unit area (gross heated floor area). The report is made for the Danish Energy Agency and targeted the Danish building industry, the agency itself and political decision makers in preparation......This report presents analyses with the purpose to clarify the energy savings of net heating until 2050 if the building components are being upgraded according to the requirements stipulated in the Danish Building Regulation 2010. Upgrading is assumed to be introduced when the building components...

  1. Energy renovation of multi-storey buildings with heritage value

    DEFF Research Database (Denmark)

    Harrestrup, Maria

    multi-storey buildings when the buildings undergo various levels of renovation. The investigation aimed at keeping the existing heating system and the existing district heating distribution network. Theoretical investigations showed that low-temperature district heating can be supplied to existing......The EU has a goal of reducing greenhouse gas emissions and energy consumption by 20% by 2020, by 40% in 2030 and by 80% in 2050 compared to 1990-levels, and Denmark has set the even more ambitious goal of being completely fossil-fuel-free by 2050. On the way to this goal, the aim is that the energy...... competitive instances. The question was to what extent we should supply renewable energy and to what extent we should save energy in buildings to optimise the costs and energy at a societal level. Calculations showed that the socioeconomic cost of reducing heating consumption in buildings by 30-65% is similar...

  2. The Use of Reference Models in Business Process Renovation

    Directory of Open Access Journals (Sweden)

    Dejan Pajk

    2010-01-01

    Full Text Available Enterprise resource planning (ERP systems are often used by companies to automate and enhance their busi- ness processes. The capabilities of ERP systems can be described by best-practice reference models. The purpose of the article is to demonstrate the business process renovation approach with the use of reference models. Although the use of reference models brings many positive effects for business, they are still rarely used in Slovenian small and medium-sized compa- nies. The reasons for this may be found in the reference models themselves as well as in project implementation methodologies. In the article a reference model based on Microsoft Dynamics NAV is suggested. The reference model is designed using upgraded BPMN notation with additional business objects, which help to describe the models in more detail.

  3. We forgot half of the population! The significance of gender in Danish energy renovation projects

    DEFF Research Database (Denmark)

    Tjørring, Lise

    2016-01-01

    that the way people live their everyday lives plays a crucial role in understanding why they choose whether to perform an energy renovation. This study is based on an anthropological investigation of ten Danish families and their decision-making process while receiving free energy advice, which, in many cases......, ended as an energy renovation project in the home. During the study, gender emerged as a significant factor in two ways. First, energy renovations were perceived differently by men and women as a consequence of their different everyday practices. Second, there was a cultural norm about the division...... that contains different gender practices and cultural influences....

  4. Renovation of a Detached Single-Family House into an Energy Efficient Low Energy House

    DEFF Research Database (Denmark)

    Larsen, Tine Steen; Maagaard, Steffen; Jensen, Rasmus Lund

    2011-01-01

    In order to obtain the political goals for national and international energy savings of reducing CO2 emissions and avoid climate changes, renovation projects for dwellings are becoming increasingly more important. This paper describes the results attained from an extensive renovation of a detached...... single-family house built in the early nineteen seventies. The old house was renovated in accordance to the best Danish low energy class (class 1). The project was followed by detailed measurements of the indoor environment (temperature, relative humidity and CO2 levels) and energy consumption for room...

  5. 多级离心泵流场优化及验证%Flow Field Optimization and Experimental Verification of Multi-stage Centrifugal Pumps

    Institute of Scientific and Technical Information of China (English)

    张权; 周盼; 率志君; 李玩幽

    2014-01-01

    Fluid exciting force is one of the important vibration sources of centrifugal pump which transmits outward through the pump shell and bearings. So, flow field optimization can effectively reduce the fluid exciting forces and vibration sources to improve the centrifugal pump’s vibration characteristic. In this paper, reduction of vibration and noise of a multi-stage centrifugal pump is studied. To begin with, CFD simulation technology is applied to optimize the flow field of the pump in the two aspects of cutting impeller and changing the shape of the volute. Then, the pressure pulsations and flow field excitation forces before and after the optimization are compared and analyzed. Afterwards, the method of cutting impeller is selected considering the requirements of processing technology. Finally the effectiveness is indirectly verified by analyzing the change of vibration response of the pump’s seats. The results show that cutting impeller and changing the tongue shape can reduce the pressure pulsation and fluid exciting force of the pump under blades’frequencies and octave frequencies, and the rear-seat vibration response after the cutting is reduced by 4 dB.%流体激励力是离心泵主要振源之一。通过对离心泵流场进行优化,可有效降低泵组流体激励力,减小离心泵振动。以多级离心泵的减振降噪为研究目的,运用CFD仿真技术从切割叶轮及改变蜗壳形状两个方面对流场进行优化。通过对比优化前后压力脉动以及流场激励力变化,说明优化情况。最后考虑加工工艺要求,选择切割叶轮的优化方法,并通过机脚振动响应的变化间接验证改善效果。结果表明:切割叶轮与改变隔舌形状对离心泵叶频及其倍频下的压力脉动与流体激励力都有减小,切割叶轮后机脚响应降低了4 dB。

  6. Nuevos materiales poliméricos derivados de fuentes renovables

    Directory of Open Access Journals (Sweden)

    Mary Isabel Lopretti Correa

    2013-01-01

    Full Text Available En las últimas décadas se ha trabajado sobre el concepto de la Biomásica como alternativa de la Petroquímica. Existe un creciente interés en el uso de materiales renovables para energía y nuevos materiales. En este trabajo se estudió la síntesis de nuevos materiales poliméricos derivados de materiales renovables, especialmente lignina, por acción de sistemas enzimáticos oxidativos derivados de G. trabeum y P. ostreatus. El propósito fue la optimización y modelización de la producción de enzimas por fermentación semisólida. Se estudió la actividad en ligninas kraft y organosolv y se observó disminución del peso molecular e incremento de los grupos carboxilo. Se concluye que para los dos hongos el origen de la lignina es irrelevante. Sin embargo, aparecen diferencias cuando se utilizan compuestos modelo de lignina. Se ha observado diferente crecimiento y aparición de sistemas enzimáticos, responsables del peso molecular y el grado de oxidación de los grupos funcionales. Se considera que la producción estandarizada de enzimas favorecerá en el futuro su uso industrial de “unidades definidas” o “bloques”. En trabajos futuros se estudiará la cinética de producción.

  7. Wind gust warning verification

    Science.gov (United States)

    Primo, Cristina

    2016-07-01

    Operational meteorological centres around the world increasingly include warnings as one of their regular forecast products. Warnings are issued to warn the public about extreme weather situations that might occur leading to damages and losses. In forecasting these extreme events, meteorological centres help their potential users in preventing the damage or losses they might suffer. However, verifying these warnings requires specific methods. This is due not only to the fact that they happen rarely, but also because a new temporal dimension is added when defining a warning, namely the time window of the forecasted event. This paper analyses the issues that might appear when dealing with warning verification. It also proposes some new verification approaches that can be applied to wind warnings. These new techniques are later applied to a real life example, the verification of wind gust warnings at the German Meteorological Centre ("Deutscher Wetterdienst"). Finally, the results obtained from the latter are discussed.

  8. Nuclear disarmament verification

    Energy Technology Data Exchange (ETDEWEB)

    DeVolpi, A.

    1993-12-31

    Arms control treaties, unilateral actions, and cooperative activities -- reflecting the defusing of East-West tensions -- are causing nuclear weapons to be disarmed and dismantled worldwide. In order to provide for future reductions and to build confidence in the permanency of this disarmament, verification procedures and technologies would play an important role. This paper outlines arms-control objectives, treaty organization, and actions that could be undertaken. For the purposes of this Workshop on Verification, nuclear disarmament has been divided into five topical subareas: Converting nuclear-weapons production complexes, Eliminating and monitoring nuclear-weapons delivery systems, Disabling and destroying nuclear warheads, Demilitarizing or non-military utilization of special nuclear materials, and Inhibiting nuclear arms in non-nuclear-weapons states. This paper concludes with an overview of potential methods for verification.

  9. Verification and validation benchmarks.

    Energy Technology Data Exchange (ETDEWEB)

    Oberkampf, William Louis; Trucano, Timothy Guy

    2007-02-01

    Verification and validation (V&V) are the primary means to assess the accuracy and reliability of computational simulations. V&V methods and procedures have fundamentally improved the credibility of simulations in several high-consequence fields, such as nuclear reactor safety, underground nuclear waste storage, and nuclear weapon safety. Although the terminology is not uniform across engineering disciplines, code verification deals with assessing the reliability of the software coding, and solution verification deals with assessing the numerical accuracy of the solution to a computational model. Validation addresses the physics modeling accuracy of a computational simulation by comparing the computational results with experimental data. Code verification benchmarks and validation benchmarks have been constructed for a number of years in every field of computational simulation. However, no comprehensive guidelines have been proposed for the construction and use of V&V benchmarks. For example, the field of nuclear reactor safety has not focused on code verification benchmarks, but it has placed great emphasis on developing validation benchmarks. Many of these validation benchmarks are closely related to the operations of actual reactors at near-safety-critical conditions, as opposed to being more fundamental-physics benchmarks. This paper presents recommendations for the effective design and use of code verification benchmarks based on manufactured solutions, classical analytical solutions, and highly accurate numerical solutions. In addition, this paper presents recommendations for the design and use of validation benchmarks, highlighting the careful design of building-block experiments, the estimation of experimental measurement uncertainty for both inputs and outputs to the code, validation metrics, and the role of model calibration in validation. It is argued that the understanding of predictive capability of a computational model is built on the level of

  10. Requirement Assurance: A Verification Process

    Science.gov (United States)

    Alexander, Michael G.

    2011-01-01

    Requirement Assurance is an act of requirement verification which assures the stakeholder or customer that a product requirement has produced its "as realized product" and has been verified with conclusive evidence. Product requirement verification answers the question, "did the product meet the stated specification, performance, or design documentation?". In order to ensure the system was built correctly, the practicing system engineer must verify each product requirement using verification methods of inspection, analysis, demonstration, or test. The products of these methods are the "verification artifacts" or "closure artifacts" which are the objective evidence needed to prove the product requirements meet the verification success criteria. Institutional direction is given to the System Engineer in NPR 7123.1A NASA Systems Engineering Processes and Requirements with regards to the requirement verification process. In response, the verification methodology offered in this report meets both the institutional process and requirement verification best practices.

  11. Toward automated parasitic extraction of silicon photonics using layout physical verifications

    Science.gov (United States)

    Ismail, Mohamed; El Shamy, Raghi S.; Madkour, Kareem; Hammouda, Sherif; Swillam, Mohamed A.

    2016-08-01

    A physical verification flow of the layout of silicon photonic circuits is suggested. Simple empirical models are developed to estimate the bend power loss and coupled power in photonic integrated circuits fabricated using SOI standard wafers. These models are utilized in physical verification flow of the circuit layout to verify reliable fabrication using any electronic design automation tool. The models are accurate compared with electromagnetic solvers. The models are closed form and circumvent the need to utilize any EM solver for the verification process. Hence, it dramatically reduces the time of the verification process.

  12. A simple and rational numerical method of two-phase flow with volume-junction model. 1. Verification calculation in saturated condition

    Energy Technology Data Exchange (ETDEWEB)

    Okazaki, Motoaki [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    1997-11-01

    A new numerical method to achieve a rigorous numerical calculation of each phase using a simple explicit method with volume-junction model is proposed. For this purpose, difference equations for numerical use are carefully derived so as to preserve the physical meaning of the basic equations. Specifically, momentum equations for the flow in the volume are newly derived to keep strict conservation of energy within the volume. To prove the validity of the numerical method and of previously proposed basic equations, including the original phase change equations, which were rigorously derived, some numerical calculations were made for each phase independently to examine the correctness of calculated results. The numerical calculation is advanced by simple integration of an explicitly obtained solution of difference equations without any special treatment. Calculated results of density and specific internal energy of each phase for saturated two-phase blowdown behavior are consistent for two different solution scheme as described below. Further, no accumulation of error in mass or energy was found. These results prove the consistency among basic equations, including phase change equations, and the correctness of numerical calculation method. The two different solution schemes used were: (1) solutions of pressure and void fraction in saturated condition were obtained by using mass conservation equation of each phase simultaneously, and (2) fluid properties were calculated directly from mass and energy conservation equation of each phase. (author)

  13. Verification tests for CANDU advanced fuel

    Energy Technology Data Exchange (ETDEWEB)

    Chung, Chang Hwan; Chang, S.K.; Hong, S.D. [and others

    1997-07-01

    For the development of a CANDU advanced fuel, the CANFLEX-NU fuel bundles were tested under reactor operating conditions at the CANDU-Hot test loop. This report describes test results and test methods in the performance verification tests for the CANFLEX-NU bundle design. The main items described in the report are as follows. - Fuel bundle cross-flow test - Endurance fretting/vibration test - Freon CHF test - Production of technical document. (author). 25 refs., 45 tabs., 46 figs.

  14. Open verification methodology cookbook

    CERN Document Server

    Glasser, Mark

    2009-01-01

    Functional verification is an art as much as a science. It requires not only creativity and cunning, but also a clear methodology to approach the problem. The Open Verification Methodology (OVM) is a leading-edge methodology for verifying designs at multiple levels of abstraction. It brings together ideas from electrical, systems, and software engineering to provide a complete methodology for verifying large scale System-on-Chip (SoC) designs. OVM defines an approach for developing testbench architectures so they are modular, configurable, and reusable. This book is designed to help both novic

  15. Qingtongxia Aluminum Carrying Out Off-site Renovation in Ningdong Energy & Chemical Base

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>Recently,the off-site renovation project of Qingtongxia Aluminum commenced the con- struction in Linhe General Industrial Park of Ningdong Energy & Chemical Base,symboliz- ing a concrete step of Qingtongxia Aluminum

  16. Treatment of CHP in LEED® for Building Design and Construction: New Construction and Major Renovations

    Science.gov (United States)

    This factsheet introduces CHP and its benefits to architects and engineers, and summarizes how CHP is treated under the LEED® for Building Design and Construction: New Construction and Major Renovations (LEED BD+C: New Construction) rating system.

  17. Review of fungal outbreaks and infection prevention in healthcare settings during construction and renovation.

    Science.gov (United States)

    Kanamori, Hajime; Rutala, William A; Sickbert-Bennett, Emily E; Weber, David J

    2015-08-01

    Hospital construction and renovation activities are an ever-constant phenomenon in healthcare facilities, causing dust contamination and possible dispersal of fungal spores. We reviewed fungal outbreaks that occurred during construction and renovation over the last 4 decades as well as current infection prevention strategies and control measures. Fungal outbreaks still occur in healthcare settings, especially among patients with hematological malignancies and those who are immunocompromised. The causative pathogens of these outbreaks were usually Aspergillus species, but Zygomycetes and other fungi were occasionally reported. Aspergillus most commonly caused pulmonary infection. The overall mortality of construction/renovation-associated fungal infection was approximately 50%. The minimal concentration of fungal spores by air sampling for acquisition of fungal infections remains to be determined. Performing infection control risk assessments and implementing the recommended control measures is essential to prevent healthcare-associated fungal outbreaks during construction and renovation.

  18. 78 FR 25062 - Program for Construction, Renovation, Repair or Expansion of Public Schools Located on Military...

    Science.gov (United States)

    2013-04-29

    ... on Military Installations AGENCY: Office of Economic Adjustment (OEA), Department of Defense (DoD... program to construct, renovate, repair, or expand elementary and ] secondary public schools on military... Schools Located on Military Installations. Announcement Type: Federal Funding Opportunity. Catalog...

  19. Application of Multiple Criteria Decision Making to Renovation of Multi-Residential Historic Buildings

    DEFF Research Database (Denmark)

    Galiotto, Nicolas; Flourentzou, Flourentzos; Thalmann, Philippe

    2013-01-01

    , we show on a case study how existing and newly developed evaluation methods were used to determine a convenient renovation scenario accepted by all the stakeholders. The building is a multi-residential historic building constructed in the early twentieth century. EPIQR+ method was used to evaluate...... a renovation project without any cost. When stakeholders act individually and the project does not meet their goals perfectly, the easiest solution is to reject it. Alongside owner decision makers and authorities, tenants and tenant associations also have a blocking power. Yet, it is rare to find a renovation...... the building deterioration, energy performance of refurbishment scenarios and the renovation costs. PETRA method was used to evaluate the quality of the historic building conservation. It was also used to evaluate the economic impact on tenants and the impact on the value of the building. In order to assess...

  20. Application of Multiple Criteria Decision Making to Renovation of Multi-Residential Historic Buildings

    DEFF Research Database (Denmark)

    Galiotto, Nicolas; Flourentzou, Flourentzos; Thalmann, Philippe

    2013-01-01

    the building deterioration, energy performance of refurbishment scenarios and the renovation costs. PETRA method was used to evaluate the quality of the historic building conservation. It was also used to evaluate the economic impact on tenants and the impact on the value of the building. In order to assess...... a renovation project without any cost. When stakeholders act individually and the project does not meet their goals perfectly, the easiest solution is to reject it. Alongside owner decision makers and authorities, tenants and tenant associations also have a blocking power. Yet, it is rare to find a renovation......, we show on a case study how existing and newly developed evaluation methods were used to determine a convenient renovation scenario accepted by all the stakeholders. The building is a multi-residential historic building constructed in the early twentieth century. EPIQR+ method was used to evaluate...

  1. Architects and Librarians under Pressure: Dialoguing about Renovation of a Library in a Constrained Environment

    Directory of Open Access Journals (Sweden)

    André Lohisse

    2008-09-01

    Full Text Available A librarian and an architect conduct the essential dialogue involved in renovating an academic library in Paris, comparing architectural concerns with the exigencies of public use, and juxtaposing technical requirements with the functional organisation of the library.

  2. Business models for full service energy renovation of single-family houses in Nordic countries

    DEFF Research Database (Denmark)

    Mahapatra, Krushna; Gustavsson, Leif; Haavik, Trond

    2013-01-01

    markets are dominated by handicraft-based individual solutions. In this paper we have analyzed the opportunities for implementation of one-stop-shop business models where an overall contractor offers full-service renovation packages including consulting, independent energy audit, renovation work, follow-up...... (independent quality control and commissioning) and financing. A comparative assessment of emerging business models in the Nordic countries shows that different types of actors can provide such a service. Financing is included in some models. There are differences in how customers are contacted, while...... the similarities are on how the service is provided. Even though there is strong business potential for one-stop-shop energy renovation concept, still it has been somewhat difficult to start or run such a business. Various options to overcome the hindrances to promote energy efficient renovation of detached houses...

  3. Interactive Configuration of High Performance Renovation of Apartment Buildings by the use of CSP

    DEFF Research Database (Denmark)

    Vareilles, E.; Thuesen, Christian; Falcon, M.

    2013-01-01

    This paper is a prospective study which looks at the possibility of configuring high performance renovation of apartment buildings by the use of constraint satisfaction problem (CSP). This study is one part of a project called CRIBA which aims to industrialize high performance thermal renovation...... of mid-rise (up to seven stories) apartment buildings. The renovation is based on external rectangular panels, always comprising insulation and cladding, and sometimes including, in addition, doors, windows or solar modules. The panels can be fixed directly onto the walls or onto a metal structure around...... the whole building. With the new thermal envelope and equipment, the building must achieve a really low energy performance of 25 kWh=m2=year. A configuration system, based on CSP approaches, will simultaneously enable the interactive definition of the renovation, the associated bill of material (BOM...

  4. Leveraging Limited Scope for Maximum Benefit in Occupied Renovation of Uninsulated Cold Climate Multifamily Housing

    Energy Technology Data Exchange (ETDEWEB)

    Neuhauser, K. [Building Science Corporation (BSC), Somer, MA (United States); Bergey, D. [Building Science Corporation (BSC), Somer, MA (United States); Osser, R. [Building Science Corporation (BSC), Somer, MA (United States)

    2012-03-01

    This project examines a large-scale renovation project within a 500 unit, 1960's era subsidized urban housing community. This research focuses on the airflow control and window replacement measures implemented as part of the renovations to the low-rise apartment buildings. The window replacement reduced the nominal conductive loss of the apartment enclosure by approximately 15%; air sealing measures reduced measured air leakage by approximately 40% on average.

  5. Decision-making in the Pre-design Stage of Sustainable Building Renovation Projects

    DEFF Research Database (Denmark)

    Nielsen, Anne Nørkjær; Steen Larsen, Tine; Jensen, Rasmus Lund

    2017-01-01

    There is a great potential in renovating our existing building stock, in terms of improving environmental, economic and social qualities. Meeting the increasing performance requirements for sustainable construction entails an increasing level of complexity in the design process of both new...... assessment scheme (e.g. DGNB-DK), or project specific sustainability criteria. The results presented in this paper are a part of an ongoing research project focusing on developing a new decision support tool for sustainable renovation....

  6. Aspinall Courthouse: GSA's Historic Preservation and Net-Zero Renovation Case Study

    Energy Technology Data Exchange (ETDEWEB)

    Chang, R.; Hayter, S.; Hotchkiss, E.; Pless, S.; Sielcken, J.; Smith-Larney, C.

    2014-10-01

    The federal government is mandated with improving efficiency of buildings, incorporating renewable energy, and achieving net-zero energy operations where possible. These challenges led GSA to consider aligning historic preservation renovations with net-zero energy goals. The Wayne N. Aspinall Federal Building and U.S. Courthouse (Aspinall Courthouse), in Grand Junction, Colorado, is an example of a renovation project that aimed to accomplish both historic preservation and net-zero energy goals.

  7. Visualization Calculation and Experimental Verification of Steady Axial Flow Force on the Converged Flow Sliding Valve%内流式滑阀壁面压力分布可视化计算及试验验证

    Institute of Scientific and Technical Information of China (English)

    张晓俊; 权龙; 赵斌

    2016-01-01

    针对现有液压阀流场(Computational fluid dynamics,CFD)仿真研究中,采用单相流模型进行计算,忽略了流体气化现象对流体密度及其流场的影响,仿真所得相对压力过低与实际不符的问题,运用Fluent软件,采用两相流模型,研究内流式滑阀流场分布,分析阀口开度、流量变化对于阀芯壁面压力分布及其稳态液动力的影响;设计一种壁面压力分布测量的试验方案,测量得到阀芯壁面的压力分布,并通过表面积积分法求出阀芯所受稳态液动力。结果表明:试验所得的内流式滑阀的壁面压力分布及其稳态液动力与仿真结果趋势一致,壁面压力峰值随着阀口开度的增大而减小;阀口开度较小时,稳态液动力的方向为阀口关闭的方向,在阀口开度达到临界点时,稳态液动力的方向为阀口打开的方向;滑阀稳态液动力公式计算由于忽略了入口射流角的变化及其出口处的动量,得到的稳态液动力误差较大,且方向始终指向阀口打开的方向。%In view of the existing problem which does not accord with the fact, that is, in the hydraulic valve flow field CFD study, the single-phase flow model ignores the influence on fluid density and fluid flow field under the condition of cavitation occurred, which leads to the result of the lower relative pressure, by using Fluent software and multiphase model, field distribution is studied on the converged flow sliding valve,and the influence by the change in the flow rate and valve orifice is analyzed on the spool wall pressure distribution and the steady-state flow force. A measurement scheme of wall pressure distribution is designed. The surface integral of the measurement value is the steady flow force. The result is the experimental data is consistent with the simulation’s, and the peak of the wall pressure distribution decreases with the increasing of the orifice area. the orifice area

  8. Renovation versus New Construction and Building Decision Tool for Educational Facilities

    Directory of Open Access Journals (Sweden)

    Carrie Pope

    2016-01-01

    Full Text Available Renovation of an existing building is an accomplished stem of the construction industry because it supplies financial diversification for construction stakeholders. Although several construction planning tools and stakeholder alignment exercises have been developed, no tool exists to assist project owners to decide between renovating an existing building and new construction with a comprehensive decision criteria. The objective of this research is to create and test a renovation versus new building support decision tool for construction project stakeholders. The renovation versus new building support decision tool was created based on an extensive review of existing support tools and construction industry needs. The created tool was implemented to evaluate decisions of educational facilities by university officials experienced in project management. Results show the tool was effective in identifying relevant topics for discussion and guiding a group of stakeholders through an exercise in decision-making. Specifically, the tool was implemented by construction management personnel for university facilities currently under construction to evaluate the decision to renovate an existing building or new construction. The main contribution of this research is a framework and support decision tool readily implementable for construction project stakeholders desiring to determine if renovation or new construction is the optimal path for their specific objectives.

  9. Quantitative Verification in Practice

    NARCIS (Netherlands)

    Haverkort, Boudewijn R.; Katoen, Joost-Pieter; Larsen, Kim G.

    2010-01-01

    Soon after the birth of model checking, the first theoretical achievements have been reported on the automated verification of quanti- tative system aspects such as discrete probabilities and continuous time. These theories have been extended in various dimensions, such as con- tinuous probabilities

  10. Darcy Tools version 3.4. Verification, validation and demonstration

    Energy Technology Data Exchange (ETDEWEB)

    Svensson, Urban (Computer-aided Fluid Engineering AB, Lyckeby (Sweden))

    2010-12-15

    DarcyTools is a computer code for simulation of flow and transport in porous and/or fractured media. The fractured media in mind is a fractured rock and the porous media the soil cover on the top of the rock; it is hence groundwater flows, which is the class of flows in mind. A number of novel methods and features form the present version of DarcyTools. In the verification studies, these methods are evaluated by comparisons with analytical solutions for idealized situations. The five verification groups (see Table 3-1 below), thus reflect the scope of DarcyTools. The present report will focus on the Verification, Validation and Demonstration of DarcyTools. Two accompanying reports cover other aspects: - Concepts, Methods and Equations, /Svensson et al. 2010/ (Hereafter denoted Report 1). - User's Guide, /Svensson and Ferry 2010/ (Hereafter denoted Report 2)

  11. Simulation environment based on the Universal Verification Methodology

    Science.gov (United States)

    Fiergolski, A.

    2017-01-01

    Universal Verification Methodology (UVM) is a standardized approach of verifying integrated circuit designs, targeting a Coverage-Driven Verification (CDV). It combines automatic test generation, self-checking testbenches, and coverage metrics to indicate progress in the design verification. The flow of the CDV differs from the traditional directed-testing approach. With the CDV, a testbench developer, by setting the verification goals, starts with an structured plan. Those goals are targeted further by a developed testbench, which generates legal stimuli and sends them to a device under test (DUT). The progress is measured by coverage monitors added to the simulation environment. In this way, the non-exercised functionality can be identified. Moreover, the additional scoreboards indicate undesired DUT behaviour. Such verification environments were developed for three recent ASIC and FPGA projects which have successfully implemented the new work-flow: (1) the CLICpix2 65 nm CMOS hybrid pixel readout ASIC design; (2) the C3PD 180 nm HV-CMOS active sensor ASIC design; (3) the FPGA-based DAQ system of the CLICpix chip. This paper, based on the experience from the above projects, introduces briefly UVM and presents a set of tips and advices applicable at different stages of the verification process-cycle.

  12. Spherical coverage verification

    CERN Document Server

    Petkovic, Marko D; Latecki, Longin Jan

    2011-01-01

    We consider the problem of covering hypersphere by a set of spherical hypercaps. This sort of problem has numerous practical applications such as error correcting codes and reverse k-nearest neighbor problem. Using the reduction of non degenerated concave quadratic programming (QP) problem, we demonstrate that spherical coverage verification is NP hard. We propose a recursive algorithm based on reducing the problem to several lower dimension subproblems. We test the performance of the proposed algorithm on a number of generated constellations. We demonstrate that the proposed algorithm, in spite of its exponential worst-case complexity, is applicable in practice. In contrast, our results indicate that spherical coverage verification using QP solvers that utilize heuristics, due to numerical instability, may produce false positives.

  13. Distorted Fingerprint Verification System

    Directory of Open Access Journals (Sweden)

    Divya KARTHIKAESHWARAN

    2011-01-01

    Full Text Available Fingerprint verification is one of the most reliable personal identification methods. Fingerprint matching is affected by non-linear distortion introduced in fingerprint impression during the image acquisition process. This non-linear deformation changes both the position and orientation of minutiae. The proposed system operates in three stages: alignment based fingerprint matching, fuzzy clustering and classifier framework. First, an enhanced input fingerprint image has been aligned with the template fingerprint image and matching score is computed. To improve the performance of the system, a fuzzy clustering based on distance and density has been used to cluster the feature set obtained from the fingerprint matcher. Finally a classifier framework has been developed and found that cost sensitive classifier produces better results. The system has been evaluated on fingerprint database and the experimental result shows that system produces a verification rate of 96%. This system plays an important role in forensic and civilian applications.

  14. Robust verification analysis

    Energy Technology Data Exchange (ETDEWEB)

    Rider, William, E-mail: wjrider@sandia.gov [Sandia National Laboratories, Center for Computing Research, Albuquerque, NM 87185 (United States); Witkowski, Walt [Sandia National Laboratories, Verification and Validation, Uncertainty Quantification, Credibility Processes Department, Engineering Sciences Center, Albuquerque, NM 87185 (United States); Kamm, James R. [Los Alamos National Laboratory, Methods and Algorithms Group, Computational Physics Division, Los Alamos, NM 87545 (United States); Wildey, Tim [Sandia National Laboratories, Center for Computing Research, Albuquerque, NM 87185 (United States)

    2016-02-15

    We introduce a new methodology for inferring the accuracy of computational simulations through the practice of solution verification. We demonstrate this methodology on examples from computational heat transfer, fluid dynamics and radiation transport. Our methodology is suited to both well- and ill-behaved sequences of simulations. Our approach to the analysis of these sequences of simulations incorporates expert judgment into the process directly via a flexible optimization framework, and the application of robust statistics. The expert judgment is systematically applied as constraints to the analysis, and together with the robust statistics guards against over-emphasis on anomalous analysis results. We have named our methodology Robust Verification. Our methodology is based on utilizing multiple constrained optimization problems to solve the verification model in a manner that varies the analysis' underlying assumptions. Constraints applied in the analysis can include expert judgment regarding convergence rates (bounds and expectations) as well as bounding values for physical quantities (e.g., positivity of energy or density). This approach then produces a number of error models, which are then analyzed through robust statistical techniques (median instead of mean statistics). This provides self-contained, data and expert informed error estimation including uncertainties for both the solution itself and order of convergence. Our method produces high quality results for the well-behaved cases relatively consistent with existing practice. The methodology can also produce reliable results for ill-behaved circumstances predicated on appropriate expert judgment. We demonstrate the method and compare the results with standard approaches used for both code and solution verification on well-behaved and ill-behaved simulations.

  15. Methods of Software Verification

    Directory of Open Access Journals (Sweden)

    R. E. Gurin

    2015-01-01

    Full Text Available This article is devoted to the problem of software verification (SW. Methods of software verification designed to check the software for compliance with the stated requirements such as correctness, system security and system adaptability to small changes in the environment, portability and compatibility, etc. These are various methods both by the operation process and by the way of achieving result. The article describes the static and dynamic methods of software verification and paid attention to the method of symbolic execution. In its review of static analysis are discussed and described the deductive method, and methods for testing the model. A relevant issue of the pros and cons of a particular method is emphasized. The article considers classification of test techniques for each method. In this paper we present and analyze the characteristics and mechanisms of the static analysis of dependencies, as well as their views, which can reduce the number of false positives in situations where the current state of the program combines two or more states obtained both in different paths of execution and in working with multiple object values. Dependences connect various types of software objects: single variables, the elements of composite variables (structure fields, array elements, the size of the heap areas, the length of lines, the number of initialized array elements in the verification code using static methods. The article pays attention to the identification of dependencies within the framework of the abstract interpretation, as well as gives an overview and analysis of the inference tools.Methods of dynamic analysis such as testing, monitoring and profiling are presented and analyzed. Also some kinds of tools are considered which can be applied to the software when using the methods of dynamic analysis. Based on the work a conclusion is drawn, which describes the most relevant problems of analysis techniques, methods of their solutions and

  16. 40 CFR 1065.341 - CVS and batch sampler verification (propane check).

    Science.gov (United States)

    2010-07-01

    ... higher flow rate or installing a mixing plate or orifice to improve mixing. (4) Hydrocarbon contamination.... (8) If applicable, perform a vacuum side leak verification of the HC sampling system as described in.... (d) If you performed the vacuum-side leak verification of the HC sampling system as described...

  17. Study of space shuttle orbiter system management computer function. Volume 2: Automated performance verification concepts

    Science.gov (United States)

    1975-01-01

    The findings are presented of investigations on concepts and techniques in automated performance verification. The investigations were conducted to provide additional insight into the design methodology and to develop a consolidated technology base from which to analyze performance verification design approaches. Other topics discussed include data smoothing, function selection, flow diagrams, data storage, and shuttle hydraulic systems.

  18. Effects of full-scale beach renovation on fecal indicator levels in shoreline sand and water.

    Science.gov (United States)

    Hernandez, Rafael J; Hernandez, Yasiel; Jimenez, Nasly H; Piggot, Alan M; Klaus, James S; Feng, Zhixuan; Reniers, Ad; Solo-Gabriele, Helena M

    2014-01-01

    Recolonization of enterococci, at a non-point source beach known to contain high background levels of bacteria, was studied after a full-scale beach renovation project. The renovation involved importation of new exogenous sand, in addition to infrastructure improvements. The study's objectives were to document changes in sand and water quality and to evaluate the relative contribution of different renovation activities towards these changes. These objectives were addressed: by measuring enterococci levels in the sand and fecal indicator bacteria levels (enterococci and fecal coliform) in the water, by documenting sediment characteristics (mineralogy and biofilm levels), and by estimating changes in observable enterococci loads. Analysis of enterococci levels on surface sand and within sediment depth cores were significantly higher prior to beach renovation (6.3-72 CFU/g for each sampling day) when compared to levels during and after beach renovation (0.8-12 CFU/g) (P < 0.01). During the renovation process, sand enterococci levels were frequently below detection limits (<0.1 CFU/g). For water, exceedances in the regulatory thresholds that would trigger a beach advisory decreased by 40% for enterococci and by 90% for fecal coliform. Factors that did not change significantly between pre- and post- renovation included the enterococci loads from animals (approx. 3 × 10(11) CFU per month). Factors that were observed to change between pre- and post- renovation activities included: the composition of the beach sand (64% versus 98% quartz, and a significant decrease in biofilm levels) and loads from direct stormwater inputs (reduction of 3 × 10(11) CFU per month). Overall, this study supports that beach renovation activities contributed to improved sand and water quality resulting in a 50% decrease of observable enterococci loads due to upgrades to the stormwater infrastructure. Of interest was that the change in the sand mineralogy also coincided with changes in biofilm

  19. Continuous verification using multimodal biometrics.

    Science.gov (United States)

    Sim, Terence; Zhang, Sheng; Janakiraman, Rajkumar; Kumar, Sandeep

    2007-04-01

    Conventional verification systems, such as those controlling access to a secure room, do not usually require the user to reauthenticate himself for continued access to the protected resource. This may not be sufficient for high-security environments in which the protected resource needs to be continuously monitored for unauthorized use. In such cases, continuous verification is needed. In this paper, we present the theory, architecture, implementation, and performance of a multimodal biometrics verification system that continuously verifies the presence of a logged-in user. Two modalities are currently used--face and fingerprint--but our theory can be readily extended to include more modalities. We show that continuous verification imposes additional requirements on multimodal fusion when compared to conventional verification systems. We also argue that the usual performance metrics of false accept and false reject rates are insufficient yardsticks for continuous verification and propose new metrics against which we benchmark our system.

  20. Integrated energy renovation of multi-sterey buildings. Pre-design; Integreret energirenovering af etagebolig. Skitseprojekt

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-08-01

    In the present project a predesign for an energy efficient renovation of a multi storey housing in the city of Vejle has been developed. The project is based on the experiences from IEA Task 20 'Solar Energy in Building Renovation' and has been coordinated with the ongoing work of Task 20 regarding the development of new and improved concepts for the use of solar energy in building renovation. The key goals of the energy conscious design, which was developed through an integrated design process, are: Implementation of newly developed flexible facade concept, improved thermal comfort and air quality conditions, substantial energy savings, facade integration of solar energy components and design development through an integrated process. The main energy elements are: Usage optimised energy efficient glazed balconies, unventilated solar mass wall with transparent insulation, ventilated solar walls, convector integrated fresh air in-lets and demand controlled moisture regulated ventilation. Besides the energy related aspects, the project has focussed on logistical aspects of ecology and modular mass production. Therefore, also Life Cycle Cost analyses have been an important tool in the design phase. The energy demand for heating and ventilation is expected to be reduced by 50% compared to a standard renovation. The renovation has been implemented during 2000 and it is expected to be finished in the middle of 2002. (BA)

  1. How to get residents/owners in housing cooperatives to agree on sustainable renovation

    Energy Technology Data Exchange (ETDEWEB)

    Lappegard Hauge, A. [SINTEF Building and Infrastructure, P.O. Box 124, Blindern, 0314 Oslo (Norway); Thomsen, J. [SINTEF Building and Infrastructure, 7465 Trondheim (Norway); Loefstroem, E. [SINTEF Building and Infrastructure, 7491 Trondheim (Norway)

    2013-05-15

    What factors increase the chance that residents/owners in housing cooperatives agree on sustainable energy efficient renovation? Based on 30 qualitative interviews with professional advisors in cooperative housing associations and chairman/board and residents in three chosen case studies, an analysis of opportunities and barriers for making a common decision on renovation is performed. Success criteria and barriers are found on the societal level as well as on the organizational/individual level. The barriers and success criteria identified on the societal level are: knowledge level on energy-efficient renovation among relevant actors, owner structure of the housing cooperative, and existing regulations and incentives. On the organizational and individual level, the following categories influencing renovation processes were identified: the time frame and organization of the process, understanding the residents' needs, economy, the information given, and the existence of available exemplary projects and role models. Based on the results of the study, ten guidelines that contribute to more successful decision making processes and increase the chances of sustainable energy efficient renovation in housing cooperatives are presented.

  2. DST, decision support tool to facilitate energy-efficient renovation of buildings

    Energy Technology Data Exchange (ETDEWEB)

    Kondratenko, I.; Koene, F.G.H.; Kaan, H.F. [ECN Energy in the Built Environment, Petten (Netherlands)

    2008-04-15

    The aim of the DEMOHOUSE project is to develop minimum standards and recommendations for energy-efficient and sustainable renovation of social housing estates. Within this, the Decision Support Tool is one of the final results and uses knowledge gathered throughout the DEMOHOUSE project. In many European countries, social housing is owned by housing associations, municipalities or housing co-operations. To facilitate the decision makers in these organisations a simple instrument which helps to select relevant information for making decisions is developed within the DEMOHOUSE project. There are several phases in the process of renovation of dwellings. Main decisions in relation to ambitions of the renovation in energy-efficiency, sustainability, economic feasibility and occupants participation take place in the first so called initiative phase. It is this phase that the DST is focusing on to guide the decision makers, hosing managers and home owners associations alike, through decision making process towards achieving energy-efficient and sustainable renovation of dwellings. As any building renovation is a complex process with many stages, the tool also contains practical information and offers guidance and links to further more in-depth information of relevance to other stakeholders for example: architects, energy experts, building contractors, and building users.

  3. Renovation of epithermal neutron beam for BNCT at THOR

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Y.-W.H. E-mail: ywhliu@ess.nthu.edu.tw; Huang, T.T.; Jiang, S.H.; Liu, H.M

    2004-11-01

    Heading for possible use for clinical trial, THOR (Tsing Hua Open-pool Reactor) at Taiwan was shutdown for renovation of a new epithermal neutron beam in January 2003. In November 2003, concrete cutting was finished for closer distance from core and larger treatment room. This article presents the design base that the construction of the new beam is based on. The filter/moderator design along the beam is Cd(0.1 cm)+Al(10 cm)+FLUENTAL{sup TM}(16 cm)+Al(10 cm)+FLUENTAL(24 cm)+Void(18 cm)+Cd(0.1 cm)+Bi(10 cm) with 6 cm Pb as reflector. Following the filter/moderator is an 88 cm long, 6 cm thick Bi-lined collimator with Li{sub 2}CO{sub 3}-PE at the end. The collimator is surrounded by Li{sub 2}CO{sub 3}-PE and Pb. The calculated beam parameters under 2 MW at the beam exit is phi{sub epi}=3.4x10{sup 9} n/cm{sup 2}/s, D{sub f}/phi{sub epi}=2.8x10{sup -11} cGy cm{sup 2}/n, D{sub {gamma}}/phi{sub epi}=1.3x10{sup -11} cGy cm{sup 2}/n, and J{sub +}/phi= 0.8. For a phantom placed 10 cm from beam exit, MCNP calculation shows that the advantage depth is 8.9 cm, and advantage ratio is 5.6 if boron concentration in tumor and normal tissue are assumed to be 65 and 18 ppm. The maximum dose rate for normal tissue is 50 cGy/min. The maximum therapeutic ratio is 6. The construction of the beam is scheduled to be finished by the end of April 2004.

  4. Renovation of epithermal neutron beam for BNCT at THOR.

    Science.gov (United States)

    Liu, Y-W H; Huang, T T; Jiang, S H; Liu, H M

    2004-11-01

    Heading for possible use for clinical trial, THOR (Tsing Hua Open-pool Reactor) at Taiwan was shutdown for renovation of a new epithermal neutron beam in January 2003. In November 2003, concrete cutting was finished for closer distance from core and larger treatment room. This article presents the design base that the construction of the new beam is based on. The filter/moderator design along the beam is Cd(0.1cm)+Al(10 cm)+FLUENTAL (16 cm)+Al(10 cm)+FLUENTAL(24 cm)+Void(18 cm)+Cd(0.1cm)+Bi(10 cm) with 6 cm Pb as reflector. Following the filter/moderator is an 88 cm long, 6 cm thick Bi-lined collimator with Li(2)CO(3)-PE at the end. The collimator is surrounded by Li(2)CO(3)-PE and Pb. The calculated beam parameters under 2 MW at the beam exit is phi(epi) = 3.4 x 10(9) n/cm(2)/s, Df/phi(epi) = 2.8 x 10(-11) cGy cm(2)/n, Dgamma/phi(epi) = 1.3 x 10(-11) cGy cm(2)/n, and J+/phi = 0.8. For a phantom placed 10 cm from beam exit, MCNP calculation shows that the advantage depth is 8.9 cm, and advantage ratio is 5.6 if boron concentration in tumor and normal tissue are assumed to be 65 and 18 ppm. The maximum dose rate for normal tissue is 50 cGy/min. The maximum therapeutic ratio is 6. The construction of the beam is scheduled to be finished by the end of April 2004.

  5. Monitoring steel bridge renovation using lead isotopic tracing.

    Science.gov (United States)

    Salome, Fred; Gulson, Brian; Chiaradia, Massimo; Davis, Jeffrey; Morris, Howard

    2017-05-01

    Monitoring removal of lead (Pb) paint from steel structures usually involves analysis of environmental samples for total lead and determination of blood Pb levels of employees involved in the Pb paint removal. We used high precision Pb isotopic tracing for a bridge undergoing Pb paint removal to determine if Pb in the environmental and blood samples originated from the bridge paint. The paint system on the bridge consisted of an anti-corrosive red Pb primer top-coated with a Micaceous Iron Oxide (MIO) alkyd. Analysis of the red Pb primer gave uniform isotopic ratios indicative of Pb from the geologically-ancient Broken Hill mines in western New South Wales, Australia. Likewise waste abrasive material, as anticipated, had the same isotopic composition as the paint. The isotopic ratios for other samples lay on 2 separate linear arrays on a(207)Pb/(204)Pb versus (206)Pb/(204)Pb diagram, one largely defined by gasoline and the majority of the ambient air data, and the other by data for one sample each of gasoline and ambient air and underwater sediments. Isotopic ratios in background ambient air samples for the project were characteristic of leaded gasoline. Air sampling during paint removal showed a contribution of paint Pb ranging from about 20 to 40%. Isotopic ratios in the blood of 8 employees prior to the commencement of work showed that 6 of these had been previously exposed to the Broken Hill Pb possibly from earlier bridge paint removal projects. One subject appeared to have increased exposure to Pb probably from the paint renovations.

  6. Carbon balance of renovated grasslands: input- or output-driven?

    Science.gov (United States)

    Choncubhair, Órlaith Ní; Osborne, Bruce; Lanigan, Gary

    2015-04-01

    Temperate grasslands constitute over 30% of the Earth's naturally-occurring biomes and make an important contribution towards the partial mitigation of anthropogenic greenhouse gas emissions by terrestrial ecosystems. In permanent temperate grasslands, biomass production and sward quality can deteriorate over time and periodic renovation activities, involving soil tillage and reseeding, are commonly carried out to halt this decline. Long-term cultivation of agricultural land has been associated with soil aggregate degradation and reduced soil carbon storage. However, the impact of these single tillage disturbances on C cycling in grasslands is less clear. This study evaluated gaseous and dissolved organic carbon (DOC) losses following a single tillage event by subjecting grassland lysimeters with contrasting soil drainage characteristics to simulated conventional inversion or minimum tillage. Field-scale CO2 emissions after conventional tillage were also quantified and empirically modelled over short- and medium-term timeframes to delineate the ecosystem response to environmental variables. Soil moisture was the limiting determinant of ecosystem carbon release following conventional tillage. Freshly-tilled soils were associated with reduced water retention and increased sensitivity to soil moisture, which was particularly pronounced following rewetting events. Significantly elevated but ephemeral CO2 effluxes were detected in the hours following inversion ploughing, however tillage disturbance did not generate significantly enhanced C emission rates in the medium term. Equally, DOC losses were not significantly amplified by conventional tillage compared with conservative minimum tillage and were predominantly controlled by soil drainage across tillage regimes. Our results suggest that a net ecosystem source of 120 to 210 g C m-2 over an approximately two-month period was most likely a consequence of reduced productivity and C input rather than enhanced soil CO2

  7. Lowell Observatory's 24-inch Clark Refractor: Its History and Renovation

    Science.gov (United States)

    Schindler, Kevin; Nye, Ralph; Rosenthal, Peter

    2016-01-01

    In 1895, Percival Lowell hired eminent telescope maker Alvan G. Clark to build a 24-inch refractor. Lowell intended the telescope intitally for observing Mars in support of his controversial theories about life on that planet. Clark finished the telescope within a year and at a cost of $20,000. Lowell and his staff of assistants and astronomers began observing through it on July 23, 1896, setting off a long and productive career for the telescope.While Lowell's Mars studies dominated early work with the Clark, V.M. Slipher by the 1910s was using it to observe planetary rotations and atmospheric compositions. He soon revolutionized spectroscopic studies, gathering excruciatingly long spectra - some in excess of 40 hours - of the so-called white nebula and determining startling radial velocities, evidence of an expanding universe. In the 1960s, scientists and artists teamed up on the Clark and created detailed lunar maps in support of the Apollo program.In recent decades, the Clark has played a central role in the education programs at Lowell, with general public audiences, students, and private groups all taking advantage of this unique resource.With this nearly 120 years of contant use, the Clark had been wearing down in recent years. The telescope was becoming more difficult to move, old electrical wiring in the dome was a fire hazard, and many of the telescope's parts needed to be repaired or replaced.In 2013, Lowell Observatory began a fundraising campaign, collecting $291,000 to cover the cost of dome and telescope renovation. Workers removed the entire telescope mount and tube assembly from the dome, examining every part from tube sections to individuals screws. They also stabilized the dome, adding a water vapor barrier and new outer wall while reinforcing the upper dome. The project lasted from January, 2014 through August, 2015. The facility reopened for daytime tours in September, 2015 and evening viewing the following month.

  8. Scalable Techniques for Formal Verification

    CERN Document Server

    Ray, Sandip

    2010-01-01

    This book presents state-of-the-art approaches to formal verification techniques to seamlessly integrate different formal verification methods within a single logical foundation. It should benefit researchers and practitioners looking to get a broad overview of the spectrum of formal verification techniques, as well as approaches to combining such techniques within a single framework. Coverage includes a range of case studies showing how such combination is fruitful in developing a scalable verification methodology for industrial designs. This book outlines both theoretical and practical issue

  9. Survey on Offline Finger Print Verification System

    NARCIS (Netherlands)

    Suman, R.; Kaur, R.

    2012-01-01

    The fingerprint verification, means where "verification" implies a user matching a fingerprint against a single fingerprint associated with the identity that the user claims. Biometrics can be classified into two types Behavioral (signature verification, keystroke dynamics, etc.) And Physiological (

  10. Sustainability Evaluation of Retrofitting and Renovation of Buildings in Early Stages

    DEFF Research Database (Denmark)

    Jensen, Per Anker; Maslesa, Esmir; Gohardani, Navid

    2013-01-01

    Research on the barriers for building renovation in Denmark has revealed that an important obstacle is a lack of simple and holistic tools that can assist stakeholders in decision-making during the early stages of projects (pre-project phases). The purpose of this paper is to present preliminary...... research results and ideas for the development of a tool, which can be used as decision support for renovation projects in early stages. The research is part of the Eracobuild project ACES – “A concept for promotion of sustainable retrofitting and renovation in early stages” with participants from Denmark......, Sweden and Cyprus. This paper is mainly based on a work package concerning benefits of restoration. The approach has been - after a literature review - to start by conducting a needs and stakeholder analysis with 10 interviews. Based on this initial analysis a requirement specification for the decision...

  11. Early stage decision support for sustainable building renovation – A review

    DEFF Research Database (Denmark)

    Nielsen, Anne Nørkjær; Jensen, Rasmus Lund; Larsen, Tine Steen

    2016-01-01

    within a building portfolio. Existing literature on decision support tools applicable in the pre-design and design phase of renovation projects have been reviewed, with the aim of providing a state-of-the-art overview. The paper categorizes the tools into six areas in which they can support the decision...... makers in the renovation process: in setting sustainability goals, weighting criteria, building diagnosis, generation of design alternatives, estimation of performance, and in the evaluation of design alternatives. These six areas are unfolded throughout the paper, along with examples and discussion...... the aspect of choosing and weighting sustainability criteria, providing explicit guidelines for screening the existing building(s), and prioritizing renovation actions within a building portfolio....

  12. Method for planning extensive energy renovation of detached single-family houses

    DEFF Research Database (Denmark)

    Grøn Bjørneboe, Matilde

    . This will take time, so both areas must be considered already now, but it will be beneficial to work on reducing the consumption before the sustainable energy supply is fully developed, so that we can avoid expensive over-production. Some 30% of the total energy consumption in Denmark takes place in households...... that the use of this approach produced a better renovation with a larger energy saving. The initial evaluation helped the house owners identify a maintenance backlog, and the use of an independent advisor helped ensure quality throughout the process. Renovations are too often carried out for just one purpose......: maintenance, to update functions or to reduce energy consumption. But a lot can be gained by combining these efforts, which can reduce expenses for planning and execution and avoid doing things twice. Research for this thesis demonstrated this approach by carrying out a renovation based on maintenance...

  13. Verification of LHS distributions.

    Energy Technology Data Exchange (ETDEWEB)

    Swiler, Laura Painton

    2006-04-01

    This document provides verification test results for normal, lognormal, and uniform distributions that are used in Sandia's Latin Hypercube Sampling (LHS) software. The purpose of this testing is to verify that the sample values being generated in LHS are distributed according to the desired distribution types. The testing of distribution correctness is done by examining summary statistics, graphical comparisons using quantile-quantile plots, and format statistical tests such as the Chisquare test, the Kolmogorov-Smirnov test, and the Anderson-Darling test. The overall results from the testing indicate that the generation of normal, lognormal, and uniform distributions in LHS is acceptable.

  14. High-level verification

    CERN Document Server

    Lerner, Sorin; Kundu, Sudipta

    2011-01-01

    Given the growing size and heterogeneity of Systems on Chip (SOC), the design process from initial specification to chip fabrication has become increasingly complex. This growing complexity provides incentive for designers to use high-level languages such as C, SystemC, and SystemVerilog for system-level design. While a major goal of these high-level languages is to enable verification at a higher level of abstraction, allowing early exploration of system-level designs, the focus so far for validation purposes has been on traditional testing techniques such as random testing and scenario-based

  15. Utilizing field medical equipment to support fixed facilities during major renovation projects.

    Science.gov (United States)

    Call, C A; Maloney, J P

    1993-05-01

    When a fixed facility plans for renovation, the ultimate goal is to provide continuous, cost-effective medical operations. One alternative is to utilize field medical equipment. The Deployable Medical Systems (DEPMEDS), even though designed for battlefield medicine, has been successfully used for six fixed facility renovation projects. As a direct result of various studies, several improvements have been implemented and recommended for the DEPMEDS equipment when used to support fixed facilities. These projects have provided a rich learning experience and have significantly improved the readiness posture of the AMEDD.

  16. Trusses Of Tensegrity Type In A Concept Of Train Station Renovation In Żary

    Directory of Open Access Journals (Sweden)

    Lechocka Paulina

    2015-09-01

    Full Text Available The first railway station in Żary was built in 1843 in Germany. After the Second World War and years of socialism in Poland the meaning of railway decreased and its technical condition deteriorated. Now the building needs renovation and change of function. Tensegrity structures may be useful in renovation of platforms shelter. They are strut and tie construction, in which there is self-stabilization between compressed and tensioned elements. Conception of new platform shelter is based on exemplary tensegrity module consist of three struts and nine cables (called „Simplex”. Tensegrity would make railway station more modern, but not cover its original elevation.

  17. Do new and renovated schools and kindergartens secure sufficiently high indoor environmental quality?

    DEFF Research Database (Denmark)

    Wargocki, Pawel; Hviid, Christian Anker; Skupien, Agata

    2016-01-01

    The present work is the part of the RENEW SCHOOL project granted by the Intelligent Energy Europe programme supported by European Commission. The aim is to promote sustainable renovation of educational buildings (schools and kindergartens) that use timber facades. The paper describes...... or less similar as their conventional counterparts as regards measured parameters of indoor environment. Subjective evaluations made by pupils and teachers did not always match the physical measurements. There were also differences in subjective evaluations made by children and by teachers. In conclusion......, there is no indication that the renovation of educational buildings would reduce indoor environmental quality conditions. Likewise, no considerable improvements are to be expected as well....

  18. Proposal for Determing the Scale of Renovation Needs of Residential Buildings

    Directory of Open Access Journals (Sweden)

    Nowogońska Beata

    2016-09-01

    Full Text Available The scope of renovation works depends, above all. on the state in which a historical site has been preserved. All actions ought to be preceded by an assessment of the technical condition of the buildings. The article presents a method for determining the scale of needs for renovating existing buildings constructed in traditional technology. The established planning decision criteria, determined by measures of decision criteria and the weights of these criteria comprise output data for establishing a matrix of indicators for the order in which works ought to be carried out. Results of using it on inhabited residential buildings located in Gorzów Wielkopolski have also been presented.

  19. Proposal for Determing the Scale of Renovation Needs of Residential Buildings

    Science.gov (United States)

    Nowogońska, Beata

    2016-09-01

    The scope of renovation works depends, above all. on the state in which a historical site has been preserved. All actions ought to be preceded by an assessment of the technical condition of the buildings. The article presents a method for determining the scale of needs for renovating existing buildings constructed in traditional technology. The established planning decision criteria, determined by measures of decision criteria and the weights of these criteria comprise output data for establishing a matrix of indicators for the order in which works ought to be carried out. Results of using it on inhabited residential buildings located in Gorzów Wielkopolski have also been presented.

  20. Gaps in tools assessing the energy implications of renovation versus rebuilding decisions

    DEFF Research Database (Denmark)

    Goldstein, Benjamin Paul; Herbøl, Mads; Meza, Maria Josefina Figueroa

    2013-01-01

    The state of building stocks changes over time. Owners and municipalities face the choice to renovate or rebuild buildings to improve energy efficiency. This review addresses how current sustainability assessment tools support these decisions. It finds that advanced tools are better tailored...... to evaluate project level energy-related decisions than at larger scales. Information gaps identified within assessment tools lead to uncertainty for decision makers about which option improves energy efficiency. In the case of a number of large-scale EU building renovating/renewing projects these tools have...

  1. HDL to verification logic translator

    Science.gov (United States)

    Gambles, J. W.; Windley, P. J.

    The increasingly higher number of transistors possible in VLSI circuits compounds the difficulty in insuring correct designs. As the number of possible test cases required to exhaustively simulate a circuit design explodes, a better method is required to confirm the absence of design faults. Formal verification methods provide a way to prove, using logic, that a circuit structure correctly implements its specification. Before verification is accepted by VLSI design engineers, the stand alone verification tools that are in use in the research community must be integrated with the CAD tools used by the designers. One problem facing the acceptance of formal verification into circuit design methodology is that the structural circuit descriptions used by the designers are not appropriate for verification work and those required for verification lack some of the features needed for design. We offer a solution to this dilemma: an automatic translation from the designers' HDL models into definitions for the higher-ordered logic (HOL) verification system. The translated definitions become the low level basis of circuit verification which in turn increases the designer's confidence in the correctness of higher level behavioral models.

  2. HDL to verification logic translator

    Science.gov (United States)

    Gambles, J. W.; Windley, P. J.

    1992-01-01

    The increasingly higher number of transistors possible in VLSI circuits compounds the difficulty in insuring correct designs. As the number of possible test cases required to exhaustively simulate a circuit design explodes, a better method is required to confirm the absence of design faults. Formal verification methods provide a way to prove, using logic, that a circuit structure correctly implements its specification. Before verification is accepted by VLSI design engineers, the stand alone verification tools that are in use in the research community must be integrated with the CAD tools used by the designers. One problem facing the acceptance of formal verification into circuit design methodology is that the structural circuit descriptions used by the designers are not appropriate for verification work and those required for verification lack some of the features needed for design. We offer a solution to this dilemma: an automatic translation from the designers' HDL models into definitions for the higher-ordered logic (HOL) verification system. The translated definitions become the low level basis of circuit verification which in turn increases the designer's confidence in the correctness of higher level behavioral models.

  3. Clinical Verification of Homeopathy

    Directory of Open Access Journals (Sweden)

    Michel Van Wassenhoven

    2011-07-01

    Full Text Available The world is changing! This is certainly true regarding the homeopathic practice and access to homeopathic medicine. Therefore our first priority at the ECH-LMHI [1] has been to produce a yearly report on the scientific framework of homeopathy. In the 2010 version a new chapter about epidemic diseases has been added including the Leptospirosis survey on the Cuban population. A second priority has been to review the definition of the homeopathic medicines respecting the new framework generated by the official registration procedure and the WHO report. We are working now on a documented (Materia Medica and provings list of homeopathic remedies to facilitate the registration of our remedies. The new challenges are: first of all more good research proposals and as such more funding (possible through ISCHI + Blackie Foundation as examples [2]; international acceptance of new guidelines for proving and clinical verification of homeopathic symptoms (Proposals are ready for discussion; total reconsideration of the homeopathic repertories including results of the clinical verification of the symptoms. The world is changing, we are part of the world and changes are needed also for homeopathy!

  4. From demonstration projects to volume market: Market development for advanced housing renovation

    NARCIS (Netherlands)

    Mlecnik, E.; Prendergast, E.; Rodsjo, A.; Haavik, T.; Parker, P.

    2010-01-01

    How do we get from demonstration projects to a volume market for very low energy demand in advanced housing renovation? The contributors to this report have been working with this issue for many years. Some worked in both IEA SHC Task 28 Sustainable Housing (2000-2005) and in SHC Task 37 Advanced Ho

  5. 75 FR 38959 - Lead; Clearance and Clearance Testing Requirements for the Renovation, Repair, and Painting...

    Science.gov (United States)

    2010-07-07

    ... From the Federal Register Online via the Government Publishing Office ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 745 RIN 2070-AJ57 Lead; Clearance and Clearance Testing Requirements for the Renovation, Repair, and Painting Program; Reopening of Comment Period AGENCY: Environmental Protection...

  6. Exploring robustness of energy performance of dwellings top occupant behaviour: renovation and post occupancy

    NARCIS (Netherlands)

    Bedir, M.; Harputlugil, G.U.; Itard, L.

    2011-01-01

    In this paper, we focus on the influence of occupant behaviour on the energy performance of dwellings, before and after renovation process. In this context, ‘ventilation control pattern’, ‘maintenance’, and ‘heating energy demand’ are selected as the key parameters of the study. The aim is to reveal

  7. 78 FR 27906 - Lead; Renovation, Repair, and Painting Program for Public and Commercial Buildings; Notice of...

    Science.gov (United States)

    2013-05-13

    ... AGENCY 40 CFR Part 745 RIN 2070-AJ56 Lead; Renovation, Repair, and Painting Program for Public and... activities create lead-based paint hazards, and, for those that do, developing certification, training, and... Title IV of TSCA, 15 U.S.C. 2681 et seq., was enacted to assist the Federal Government in reducing...

  8. Method for Developing and Assessing Holistic Energy Renovation of Multi-Storey Buildings

    DEFF Research Database (Denmark)

    Eriksen, Marlene Stenberg Hagen; Rode, Carsten; Bjarløv, Søren Peter

    A large part of the Danish building stock is from the post-war era, and thus there is an immense need for renovation within a few years. Also there is a persistent focus on energy use in buildings as it corresponds to about 40% of the total energy use in Denmark. However to secure durable solutio...

  9. Holistic Energy Renovation of Pre- and Postwar Apartment Blocks in Denmark

    DEFF Research Database (Denmark)

    Eriksen, Marlene Stenberg Hagen; Rode, Carsten; Bjarløv, Søren Peter

    A significant proportion of apartments in Denmark are build during the years 1930-1970. This group of buildings generally have not exhausted their lifetime, but suffer from immense needs for renovation, both regarding energy use and functionality, in order to bring them near to the standards of t...

  10. Energia Renovable para Centros de Salud Rurales (Renewable Energy for Rural Health Clinics)

    Energy Technology Data Exchange (ETDEWEB)

    Jimenez, T.; Olson, K.

    1999-07-28

    Esta es la primera de una serie de guias de aplicaciones que el Programa de Energia de Villas de NREL esta comisionando para acoplar sistemas comerciales renovables con aplicaciones rurales, incluyendo agua, escuelas rurales y micro empresas. La guia esta complementada por las actividades de desarrollo del Programa de Energia de Villas de NREL, proyectos pilotos internacionales y programas de visitas profesionales.

  11. Multi-angled Façade System for Office Building Renovation

    DEFF Research Database (Denmark)

    Hannoudi, Loay Akram; Christensen, Jørgen Erik; Lauring, Michael

    renovating office buildings. The architectural potential is presented with the help of AutoCAD software. The energy efficiency and indoor climate are investigated and evaluated by using correlational research and simulation research methods with the software IDA ICE. From a functional perspective, the multi...

  12. Multi-angled façade system for office building renovation

    DEFF Research Database (Denmark)

    Hannoudi, Loay Akram; Lauring, Michael; Christensen, Jørgen Erik

    2016-01-01

    renovating office buildings. The architectural potential is presented with the help of AutoCAD software. The energy efficiency and indoor climate are investigated and evaluated by using correlational research and simulation research methods with the software IDA ICE. From a functional perspective, the multi...

  13. Energy Use and Indoor Climate in Two Schools Before and After Deep Energy Renovation

    DEFF Research Database (Denmark)

    Rose, Jørgen; Thomsen, Kirsten Engelund; Mørck, Ove

    2013-01-01

    with the determination of working bundles of technologies and corresponding business models using combined public and private funding. Denmark will contribute to the project with 7 buildings in total, i.e. 2 schools and 5 kinder-gartens¬/institutions, which will undergo deep energy renovation over the next few years...

  14. Renovating Alzheimer's: "Constructive" Reflections on the New Clinical and Research Diagnostic Guidelines

    Science.gov (United States)

    George, Daniel R.; Qualls, Sara H.; Camp, Cameron J.; Whitehouse, Peter J.

    2013-01-01

    The development of disease concepts for conditions such as Alzheimer's disease (AD) is an ongoing social process that evolves over time. The biomedical paradigm about AD that has informed our culture's understanding of brain aging for the past several decades is currently undergoing a major and timely renovation in the early 21st century. This…

  15. The influence of end-user perception on the economic feasibility of sustainable building skin renovations

    NARCIS (Netherlands)

    Bogers, B.A.; Van den Berg, D.; Zijlstra, S.; De Jong, P.

    2015-01-01

    Considering the small addition in the housing supply of newly built dwellings, meeting sustainable goals in the Netherlands will have to come from the existing housing supply. TU Delft’s Solar Decathlon 2014 design focuses on achieving a zero energy renovation that is both sustainable as well as att

  16. FINANCIAL LEASING AS AN INVESTMENT INSTRUMENT OF FIXED ASSETS RENOVATION OF DOMESTIC ENTERPRISES

    Directory of Open Access Journals (Sweden)

    O. Miroshnychenko

    2014-04-01

    Full Text Available The main characteristics of the financial leasing using as an investment instrument for fixed assets renovation of domestic enterprises have been considered. The advantages of financial leasing and the need to use in order to update the fixed assets, especially in the lack of financial resources for the purchasing of new machinery and equipment, have been determined.

  17. Effects of Lean Work Organization and Industrialization on Workflow and Productive Time in Housing Renovation Projects

    NARCIS (Netherlands)

    Vrijhoef, Ruben

    2016-01-01

    This paper presents work aimed at improved organization and performance of production in housing renovation projects. The purpose is to explore and demonstrate the potential of lean work organization and industrialized product technology to improve workflow and productive time. The research included

  18. Effect of renovating an office building on occupants' comfort and health

    DEFF Research Database (Denmark)

    Pejtersen, Jan; Brohus, H.; Hyldgaard, C. E.

    2001-01-01

    . Before the floor material was installed in the office building, a full-scale exposure experiment was performed in the laboratory. The new ventilation strategy and renovation of the HVAC system were selected on the basis of laboratory experiments on a full-scale mock-up of a cellular office. The severity...

  19. Renovating Alzheimer's: "Constructive" Reflections on the New Clinical and Research Diagnostic Guidelines

    Science.gov (United States)

    George, Daniel R.; Qualls, Sara H.; Camp, Cameron J.; Whitehouse, Peter J.

    2013-01-01

    The development of disease concepts for conditions such as Alzheimer's disease (AD) is an ongoing social process that evolves over time. The biomedical paradigm about AD that has informed our culture's understanding of brain aging for the past several decades is currently undergoing a major and timely renovation in the early 21st century. This…

  20. [History of the renovation of the hôtel-Dieu of Bourges].

    Science.gov (United States)

    Gitton, Philippe

    2006-01-01

    From the 16th to the 20th century "hôtel-Dieu" was the main hospital in the Berry capital. In the 30's the mayor decided to renovate the building but in 1994 the construction of a new hospital--"Centre Hospitalier Jacques-Coeur"--freed the ancient building which became a historical centre for culture et tourism in the region.

  1. 77 FR 76996 - Lead; Renovation, Repair, and Painting Program for Public and Commercial Buildings; Request for...

    Science.gov (United States)

    2012-12-31

    ..., defined in the rule as a subset of public and commercial buildings in which young children spend a... EPA is interested in. The 2010 ANPRM contains a comprehensive history of this rulemaking and the lead... substances, Public and commercial buildings, Occupational safety and health, Renovations, Repair,...

  2. Online fingerprint verification.

    Science.gov (United States)

    Upendra, K; Singh, S; Kumar, V; Verma, H K

    2007-01-01

    As organizations search for more secure authentication methods for user access, e-commerce, and other security applications, biometrics is gaining increasing attention. With an increasing emphasis on the emerging automatic personal identification applications, fingerprint based identification is becoming more popular. The most widely used fingerprint representation is the minutiae based representation. The main drawback with this representation is that it does not utilize a significant component of the rich discriminatory information available in the fingerprints. Local ridge structures cannot be completely characterized by minutiae. Also, it is difficult quickly to match two fingerprint images containing different number of unregistered minutiae points. In this study filter bank based representation, which eliminates these weakness, is implemented and the overall performance of the developed system is tested. The results have shown that this system can be used effectively for secure online verification applications.

  3. Shift Verification and Validation

    Energy Technology Data Exchange (ETDEWEB)

    Pandya, Tara M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Evans, Thomas M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Davidson, Gregory G [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Johnson, Seth R. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Godfrey, Andrew T. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2016-09-07

    This documentation outlines the verification and validation of Shift for the Consortium for Advanced Simulation of Light Water Reactors (CASL). Five main types of problems were used for validation: small criticality benchmark problems; full-core reactor benchmarks for light water reactors; fixed-source coupled neutron-photon dosimetry benchmarks; depletion/burnup benchmarks; and full-core reactor performance benchmarks. We compared Shift results to measured data and other simulated Monte Carlo radiation transport code results, and found very good agreement in a variety of comparison measures. These include prediction of critical eigenvalue, radial and axial pin power distributions, rod worth, leakage spectra, and nuclide inventories over a burn cycle. Based on this validation of Shift, we are confident in Shift to provide reference results for CASL benchmarking.

  4. Shift Verification and Validation

    Energy Technology Data Exchange (ETDEWEB)

    Pandya, Tara M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Evans, Thomas M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Davidson, Gregory G [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Johnson, Seth R. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Godfrey, Andrew T. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2016-09-07

    This documentation outlines the verification and validation of Shift for the Consortium for Advanced Simulation of LightWater Reactors (CASL). Fivemain types of problems were used for validation: small criticality benchmark problems; full-core reactor benchmarks for light water reactors; fixed source coupled neutron-photon dosimetry benchmarks; depletion/burnup benchmarks; and full-core reactor performance benchmarks. We compared Shift results to measured data and other simulated Monte Carlo radiation transport code results and found very good agreement in a variety of comparison measures. These include prediction of critical eigenvalue, radial and axial pin power distributions, rod worth, leakage spectra, and nuclide inventories over a burn cycle. Based on this validation of Shift, we are confident in Shift to provide reference results for CASL benchmarking.

  5. Assessment of Flooring Renovations on African Elephant (Loxodonta africana Behavior and Glucocorticoid Response.

    Directory of Open Access Journals (Sweden)

    Sarah A Boyle

    Full Text Available Captive African (Loxodonta africana and Asian (Elephas maximus elephants can experience foot pathologies and arthritis. As a preventative measure against these pathologies and to alleviate the potential discomfort due to concrete substrates, some zoological institutions have renovated elephant housing to increase the amount of natural or shock-absorbent substrates. The objective of this study was to compare behavioral (diurnal and nocturnal and glucorticoid (e.g., serum cortisol responses of three female African elephants before, during, and after renovation to their indoor housing floor to assess whether renovations had short-term effects on the elephants' behavior and stress physiology. Behavioral data were collected using scan-sampling methods, and activity budgets were constructed for each of the three elephants. In addition, the duration of all lying rest activities were recorded. Weekly serum cortisol concentrations were determined with enzyme immunoassay (EIA. Overall, eating was the most prevalent behavior exhibited outdoors during the day, while resting (either in a lying or standing position were most common during the indoor, nocturnal periods. Although variation existed among the three elephants, all three females spent significantly more time walking and less time eating during the day after the completion of the renovations. The extent to which the three elephants exhibited nocturnal lying rest behavior varied among the elephants, with the oldest elephant exhibiting the least amount (an average of 13.2 ± 2.8% of the nightly behavioral scans compared to the two younger elephants (an average of 34.5 ± 2.1% and 56.6 ± 2.8% of the nightly behavioral scans. There was a significant increase in lying rest behavior for one elephant and standing rest for a second elephant following renovations. Baseline cortisol concentrations prior to renovations were 3.0 ± 0.4 ng/ml, 4.5 ± 0.5 ng/ml, and 4.9 ± 0.5 ng/ml for the three elephants

  6. Assessment of Flooring Renovations on African Elephant (Loxodonta africana) Behavior and Glucocorticoid Response.

    Science.gov (United States)

    Boyle, Sarah A; Roberts, Beth; Pope, Brittany M; Blake, Margaret R; Leavelle, Stephen E; Marshall, Jennifer J; Smith, Andrew; Hadicke, Amanda; Falcone, Josephine F; Knott, Katrina; Kouba, Andrew J

    2015-01-01

    Captive African (Loxodonta africana) and Asian (Elephas maximus) elephants can experience foot pathologies and arthritis. As a preventative measure against these pathologies and to alleviate the potential discomfort due to concrete substrates, some zoological institutions have renovated elephant housing to increase the amount of natural or shock-absorbent substrates. The objective of this study was to compare behavioral (diurnal and nocturnal) and glucorticoid (e.g., serum cortisol) responses of three female African elephants before, during, and after renovation to their indoor housing floor to assess whether renovations had short-term effects on the elephants' behavior and stress physiology. Behavioral data were collected using scan-sampling methods, and activity budgets were constructed for each of the three elephants. In addition, the duration of all lying rest activities were recorded. Weekly serum cortisol concentrations were determined with enzyme immunoassay (EIA). Overall, eating was the most prevalent behavior exhibited outdoors during the day, while resting (either in a lying or standing position) were most common during the indoor, nocturnal periods. Although variation existed among the three elephants, all three females spent significantly more time walking and less time eating during the day after the completion of the renovations. The extent to which the three elephants exhibited nocturnal lying rest behavior varied among the elephants, with the oldest elephant exhibiting the least amount (an average of 13.2 ± 2.8% of the nightly behavioral scans) compared to the two younger elephants (an average of 34.5 ± 2.1% and 56.6 ± 2.8% of the nightly behavioral scans). There was a significant increase in lying rest behavior for one elephant and standing rest for a second elephant following renovations. Baseline cortisol concentrations prior to renovations were 3.0 ± 0.4 ng/ml, 4.5 ± 0.5 ng/ml, and 4.9 ± 0.5 ng/ml for the three elephants. Cortisol

  7. 40 CFR 1065.307 - Linearity verification.

    Science.gov (United States)

    2010-07-01

    ... linearity verification generally consists of introducing a series of at least 10 reference values to a... reference values of the linearity verification. For pressure, temperature, dewpoint, and GC-ECD linearity verifications, we recommend at least three reference values. For all other linearity verifications select...

  8. Reconfigurable system design and verification

    CERN Document Server

    Hsiung, Pao-Ann; Huang, Chun-Hsian

    2009-01-01

    Reconfigurable systems have pervaded nearly all fields of computation and will continue to do so for the foreseeable future. Reconfigurable System Design and Verification provides a compendium of design and verification techniques for reconfigurable systems, allowing you to quickly search for a technique and determine if it is appropriate to the task at hand. It bridges the gap between the need for reconfigurable computing education and the burgeoning development of numerous different techniques in the design and verification of reconfigurable systems in various application domains. The text e

  9. Verification of the Space Shuttle entry GN&C system

    Science.gov (United States)

    Van Hoften, J. D. A.; Moyles, J. A.

    1981-01-01

    The certification procedures for the initial Shuttle flight are discussed. Particular attention is paid to the entry guidance, navigation, and control (GNC) verification, comprising tests, analysis, demonstration, inspection, and simulation. Flow diagrams for the verification and operational flight sequences are provided, along with a block diagram of the GNC circuitry interfaces. The development of the test matrix software for the GNC is outlined, noting the constant interplay between software verification and spacecraft reconfiguration to meet simulated performance requirements. Comparison of GNC performance predictions with actual entry flight data showed a good match in all performance areas except for sideslip excursions, bank overshoots, an area of transonic buffet, and an increased lift/drag ratio in the preflare to landing flight phase.

  10. Potential energy savings in renovation projects of residential and service buildings; Energiansaeaestoemahdollisuudet rakennuskannan korjaustoiminnassa

    Energy Technology Data Exchange (ETDEWEB)

    Heljo, J.; Vihola, J.

    2012-11-01

    The study estimates the feasible energy savings potential in the 2010 building stock by 2050. The focus is on energy-saving measures related to renovation of residential and service buildings. The calculations were done by building types and age groups using the EKOREM calculation model. The calculations indicate the building types and structural elements where potential for savings exists. The study did not consider energy-saving measures related to changes in heating systems, electrical equipment, property maintenance or use habits. The study disproved the common belief that considerably more energy savings could be achieved faster by focussing on the existing building stock instead of new construction. That is mainly due the fact that it generally pays to implement structural energy-saving measures only when the targeted elements also require other significant repairs besides energy-efficiency improvements. Thus, energy renovations cannot be speeded up very much. The clearest exception are the extra insulations added to roof assemblies that are easy to implement. Attempts to save more energy in the building stock than can be achieved at a small additional cost in connection with needed renovations may multiply costs, and the saving in energy costs will not necessarily cover the additional investments. The efficiency of energy-saving measures can be affected by recommending or ordering use of more energy efficient windows, thicker extra insulations or more efficient ventilation heat recovery systems than the standard solution selected in connection with renovations. The goal of preserving the characteristics of buildings of cultural-historical or architectural value and the typical solutions and materials used in all buildings of a certain period limit the repair and renovation of structural elements. In the case of these buildings, improvement of energy efficiency can be considered in connection with the planning of renovations and the buildings' use and

  11. On Stakeholders and the Decision Making Process Concerning Sustainable Renovation and Refurbishment in Sweden, Denmark and Cyprus

    DEFF Research Database (Denmark)

    Gohardani, Navid; Björk, Folke; Jensen, Per Anker;

    2013-01-01

    . In particular, the attitude of stakeholders in Sweden, Denmark and Cyprus to sustainable building renovation/refurbishment is studied through three separate case studies. Within the framework of this study, it is identified that building physics and durability are the most important drivers for energy...... renovation. In Sweden, Denmark and Cyprus, these factors are contributed by maintenance, deterioration and moisture, respectively. The results of the questionnaires and semi-structured interviews presented herein provide an insight into the renovation process in the aforementioned countries and reveal...

  12. Generic interpreters and microprocessor verification

    Science.gov (United States)

    Windley, Phillip J.

    1990-01-01

    The following topics are covered in viewgraph form: (1) generic interpreters; (2) Viper microprocessors; (3) microprocessor verification; (4) determining correctness; (5) hierarchical decomposition; (6) interpreter theory; (7) AVM-1; (8) phase-level specification; and future work.

  13. Numident Online Verification Utility (NOVU)

    Data.gov (United States)

    Social Security Administration — NOVU is a mainframe application that accesses the NUMIDENT to perform real-time SSN verifications. This program is called by other SSA online programs that serve as...

  14. Biometric verification with correlation filters

    Science.gov (United States)

    Vijaya Kumar, B. V. K.; Savvides, Marios; Xie, Chunyan; Venkataramani, Krithika; Thornton, Jason; Mahalanobis, Abhijit

    2004-01-01

    Using biometrics for subject verification can significantly improve security over that of approaches based on passwords and personal identification numbers, both of which people tend to lose or forget. In biometric verification the system tries to match an input biometric (such as a fingerprint, face image, or iris image) to a stored biometric template. Thus correlation filter techniques are attractive candidates for the matching precision needed in biometric verification. In particular, advanced correlation filters, such as synthetic discriminant function filters, can offer very good matching performance in the presence of variability in these biometric images (e.g., facial expressions, illumination changes, etc.). We investigate the performance of advanced correlation filters for face, fingerprint, and iris biometric verification.

  15. Verification of the thermal design of electronic equipment

    Energy Technology Data Exchange (ETDEWEB)

    Hienonen, R.; Karjalainen, M.; Lankinen, R. [VTT Automation, Espoo (Finland). ProTechno

    1997-12-31

    The project `Verification of the thermal design of electronic equipment` studied the methodology to be followed in the verification of thermal design of electronic equipment. This project forms part of the `Cool Electronics` research programme funded by TEKES, the Finnish Technology Development Centre. This project was carried out jointly by VTT Automation, Lappeenranta University of Technology, Nokia Research Center and ABB Industry Oy VSD-Technology. The thermal design of electronic equipment has a significant impact on the cost, reliability, tolerance to different environments, selection of components and materials, and ergonomics of the product. This report describes the method for verification of thermal design. It assesses the goals set for thermal design, environmental requirements, technical implementation of the design, thermal simulation and modelling, and design qualification testing and the measurements needed. The verification method covers all packaging levels of electronic equipment from the system level to the electronic component level. The method described in this report can be used as part of the quality system of a corporation. The report includes information about the measurement and test methods needed in the verification process. Some measurement methods for the temperature, flow and pressure of air are described. (orig.) Published in Finnish VTT Julkaisuja 824. 22 refs.

  16. An assessment of schoolyard renovation strategies to encourage children's physical activity

    Directory of Open Access Journals (Sweden)

    Greenwood Emily

    2011-04-01

    Full Text Available Abstract Background Children in poor and minority neighborhoods often lack adequate environmental support for healthy physical development and community interventions designed to improve physical activity resources serve as an important approach to addressing obesity. In Denver, the Learning Landscapes (LL program has constructed over 98 culturally-tailored schoolyard play spaces at elementary schools with the goal to encourage utilization of play spaces and physical activity. In spite of enthusiasm about such projects to improve urban environments, little work has evaluated their impact or success in achieving their stated objectives. This study evaluates the impacts of LL construction and recency of renovation on schoolyard utilization and the physical activity rates of children, both during and outside of school, using an observational study design. Methods This study employs a quantitative method for evaluating levels of physical activity of individuals and associated environmental characteristics in play and leisure environments. Schools were selected on the basis of their participation in the LL program, the recency of schoolyard renovation, the size of the school, and the social and demographic characteristics of the school population. Activity in the schoolyards was measured using the System for Observing Play and Leisure Activity (SOPLAY, a validated quantitative method for evaluating levels of physical activity of individuals in play and leisure environments. Trained observers collected measurements before school, during school recess, after school, and on weekends. Overall utilization (the total number of children observed on the grounds and the rate of activity (the percentage of children observed who were physically active were analyzed. Observations were compared using t-tests and the data were stratified by gender for further analysis. In order to assess the impacts of LL renovation, recently-constructed LL schoolyards were

  17. Woodward Effect Experimental Verifications

    Science.gov (United States)

    March, Paul

    2004-02-01

    The work of J. F. Woodward (1990 1996a; 1996b; 1998; 2002a; 2002b; 2004) on the existence of ``mass fluctuations'' and their use in exotic propulsion schemes was examined for possible application in improving space flight propulsion and power generation. Woodward examined Einstein's General Relativity Theory (GRT) and assumed that if the strong Machian interpretation of GRT as well as gravitational / inertia like Wheeler-Feynman radiation reaction forces hold, then when an elementary particle is accelerated through a potential gradient, its rest mass should fluctuate around its mean value during its acceleration. Woodward also used GRT to clarify the precise experimental conditions necessary for observing and exploiting these mass fluctuations or ``Woodward effect'' (W-E). Later, in collaboration with his ex-graduate student T. Mahood, they also pushed the experimental verification boundaries of these proposals. If these purported mass fluctuations occur as Woodward claims, and his assumption that gravity and inertia are both byproducts of the same GRT based phenomenon per Mach's Principle is correct, then many innovative applications such as propellantless propulsion and gravitational exotic matter generators may be feasible. This paper examines the reality of mass fluctuations and the feasibility of using the W-E to design propellantless propulsion devices in the near to mid-term future. The latest experimental results, utilizing MHD-like force rectification systems, will also be presented.

  18. A library for the twenty-first century: the Galter Health Sciences Library's renovation and expansion project.

    Science.gov (United States)

    Shedlock, J; Ross, F

    1997-04-01

    A renovation and expansion project at the Galter Health Sciences Library of Northwestern University strikes a balance between traditional and future libraries, library ambiance and high technology, old and new. When guided by a vision of future building use, renovation projects can succeed in meeting many institutional goals as a viable alternative to new library buildings. Issues addressed include planning considerations, architectural history, library design, building features, information technology considerations, and ideal library space design when new construction is not possible.

  19. Repair and renovation work in the building sector. Part 5 Summary; Korjausrakentaminen 1990 KORVO 90. Osa 5 Yhteenveto

    Energy Technology Data Exchange (ETDEWEB)

    Lehtinen, E.; Vainio, T. [Technical Research Centre of Finland, Espoo (Finland). Lab. of Building Production

    1991-11-01

    The study of repair and renovation in the building sector (KORVO 90) gives a general picture of repair and renovation work in Finland in 1990: the total value of repair and renovation, the age of buildings being under repair, the measures taken the performing sectors and the causes for repairs undertaken. The development of repairs and renovation in the 1990s is forecast with the help of this study. The Building Production Laboratory of Technical Research Centre of Finland (VTT) has done a corresponding study concerning the year 1982. The new study inquired more closely into the repair work of flats. Both studies were based on postal questionnaires and interviews. The results of these studies are comparable with each other and evaluate the development of building repair work in the 1980s. The results of the study have been published in five parts. This is the fifth part and it includes a summary of the results. The value of repair and renovation increased by 50 per cent in the 1980s being FIM 21 billion in the year 1990. The repair and renovation of terrace houses, block of flats and business buildings increased most.

  20. Barriers and Potential Solutions for Energy Renovation of Buildings in Denmark

    DEFF Research Database (Denmark)

    Meyer, Niels I; Mathiesen, Brian Vad; Hvelplund, Frede

    2014-01-01

    Buildings account for a substantial part of the total energy consumption. In Denmark this number is about 40 % and this is approximately the same in most industrial countries. On this background there is an urgent need to develop strategies for reducing the energy demand in the building sector....... Renovation of existing buildings must have high priority as houses often last for 50 to 100 years, while the time perspective for the desired transformation to low-energy houses is less than 30 years in order to mitigate global warming and avoid irreversible tipping-points. The only sustainable energy supply...... investments in energy conservation measures with investments in the supply side, in order to avoid overinvestment in supply systems and thus to minimize the total costs of the transformation to Smart Energy Systems. This paper highlights some of the most important barriers for renovation of existing buildings...

  1. Análisis a la eficiencia de las fuentes de energía renovable

    Directory of Open Access Journals (Sweden)

    Jennifer Wangong

    2010-12-01

    Full Text Available A pesar de tener el apoyo del público y numerosas ventajas sobre otras fuentes de energía, a las tecnologías renovables se les ha caracterizado repetidamente de no poder satisfacer nuestras necesidades energéticas, y se han presentado sólo como una opción entre los combustibles fósiles convencionales y la energía nuclear. En este trabajo se muestra que esto es una falsa opción, ya que la energía renovable puede generar de forma segura la misma energía que los combustibles convencionales, y puede hacerlo sin producir las emisiones de carbono o los residuos radiactivos que contaminan el medio ambiente.

  2. Genotoxicity test of self-renovated ceramics in primary human peripheral lymphocytes.

    Science.gov (United States)

    Hua, Nan; Zhu, Huifang; Zhuang, Jing; Chen, Liping

    2014-12-01

    Zirconia-based ceramics is widely used in dentistry. Different compositions of ceramics have different features. Our self-renovated ceramics become more machinable without scarifying its dental restoration properties after adjusting ratio of lanthanum phosphate (LaPO4)/yttrium oxide (Y2O3). In order to evaluate its safety, here, we tested its genotoxicity in primary human peripheral lymphocytes. The human lymphocytes cultured on three groups of different ratios of LaPO4/Y2O3 diphase ceramics for 6 days showed little effect of growth inhibition and similar effect of growth trend to the negative control. Furthermore, single-cell gel electrophoresis (comet assay) indicated that there was no significant difference of the value of tail moment between the tested ceramics and negative control, the IPS Empress II (P > 0.05). Our findings implicate that our self-renovated ceramics do not induce DNA damages in human peripheral lymphocytes and support their future clinic application.

  3. Upgrade programs. Status and prospective; Programme de renovation. Etat et perspectives

    Energy Technology Data Exchange (ETDEWEB)

    Loyer, F. [Grand Accelerateur National d`Ions Lourdes (GANIL), 14 - Caen (France)] [and others

    1998-12-31

    Arguments for launching a renovation program for GANIL system, taking into account aging and wear, are analyzed. A statistics of failures related to vacuum systems, power supplies, electronics, cooling systems, beam dumps and other equipment is given. The renovation program is targeted to: replacement of obsolete components, introduction of advanced systems of failure diagnosis, augmentation of performances of the new regulating and control system and improvement in the performance characteristics of certain fundamental equipment. The first results and to date status of the program development is reported. Mentioned are the works related to control of HF cavities and the associated amplifiers, electronics, the system of cavity synchronization, power supply, RMN, system commutation grid, pumping equipment, etc. Also, improvements concerning the machine data acquisition and online processing are referred to as well as program cost estimations 2 figs., 1 tab.

  4. Energy renovation of Danish single-family houses Economy - barrier, motivation and limit

    DEFF Research Database (Denmark)

    Mortensen, Andrea; Heiselberg, Per Kvols; Plenge, Mary-Ann Knudstrup

    .000 DKK and 310.000DKK) are fair compared to the outcome, but when the needed investment is at 550.000 DKK and above, the majority think it is too expensive despite the benefits. The investment limit for the private renovations is defined on the basis on the homeowners’ interest in performing similar...... projects as the presented. The average limit is below 310.000 DKK the price of concept 3. However some of the respondents have a higher limit, and naturally some a lower limit. To increase the amount of deep renovations large private investments are needed and the results show that this is most likely......, because the homeowners here have a higher than average interest in conducting similar project, hence a higher investment limit. • When the homeowners are young as this is where the interesting investment is largest. • In households with a high yearly income. Both the interest in similar projects...

  5. Full-service concept for energy efficient renovation of single-family houses

    DEFF Research Database (Denmark)

    Vanhoutteghem, Lies; Tommerup, Henrik M.; Svendsen, Svend

    2011-01-01

    existing single-family houses in the Nordic countries are to have competitive power compared to new buildings on the future housing market. Good technical solutions exist but need to be combined based on the full range of (standard) solutions in order to reach the low primary energy level of new...... houses. A one-stop-shop in the form of a full-service concept could be seen as a possibility to make it easy for the homeowner to comply with possible future requirements to realize far-reaching energy savings in connection with extensive renovations, provided that the building sector offers...... the solutions. Such one-stop-shops in the form of full-service providers of energy efficient renovation of single-family house are missing in the Nordic countries, although this service is vital to open up the market. As part of the Nordic research project `SuccesFamilies´ with the purpose to change...

  6. CONVERGENCE AS A RENOVATION/CONSERVATION TOOL FOR JOURNALISM IN GALICIA: STRATEGIES AND UNCERTAINTIES

    Directory of Open Access Journals (Sweden)

    Carlos Toural Bran

    2012-06-01

    Full Text Available This paper offers a theoretical reflection on the concept of convergence in the Autonomous Community of Galicia, in Spain. In this geographic area, marked by its respect for journalistic tradition (especially referring to the press and its inertia, it is possible to distinguish two different attitudes (actually conflicting with regard to the convergence phenomenon. Conservation strategies coexist, therefore, (focusing mainly on the business aspect of the convergent phenomenon with renovation strategies (creation of new spaces on the web, great commitment to the possibilities offered by new technologies and social networks. We are presenting an analytical study of the coexistence of these two interpretations of convergence (marketing and technological, respectively in the communication ecosystem of Galicia. We can recognize the beginning of a dialectic tension between the discourses of renovation and conservation which at present coexist in harmony. It is assumed that the information industry in Galicia will eventually choose the path that guarantees the survival of its media.

  7. Renovating? Take a look at the new short-term paths to financing.

    Science.gov (United States)

    Kluger, M

    1984-02-01

    A hospital's renovation project can be financed through a diversity of financing techniques. Although the traditional vehicle for hospital capital financing is long-term, fixed-rate debt, there are a growing number of short-term financing alternatives that can provide greater flexibility and generate debt service savings. The author describes some of the new short-term financing techniques, as well as the advantages and disadvantages of short- versus long-term financing.

  8. [Analysis of the design and renovation of mid-sized hospital's local area network].

    Science.gov (United States)

    Cao, Yang; Li, Min; Guo, Yifeng

    2011-11-01

    To address several hospital network issues, this paper discusses the overall plan, design and renovation of hospital's Local Area Network, making full use of existing network facilities. The techniques, such as Physical Separation of Internal and External Network, HSRP, OSPF, All-Routers Networking Model, etc., create features of extensibility, manageability, high safety, stability and so on to the overall network, and provide a reliable network platform to the function of the information systems.

  9. Mathematical verification of a nuclear power plant protection system function with combined CPN and PVS

    Energy Technology Data Exchange (ETDEWEB)

    Koo, Seo Ryong; Son, Han Seong; Seong, Poong Hyun [Korea Advanced Institute of Science and Technology, Taejon (Korea, Republic of)

    1998-12-31

    In this work, an automatic software verification method for Nuclear Power Plant (NPP) protection system is developed. This method utilizes Colored Petri Net (CPN) for modeling and Prototype Verification System (PVS) for mathematical verification. In order to help flow-through from modeling by CPN to mathematical proof by PVS, a translator has been developed in this work. The combined method has been applied to a protection system function of Wolsong NPP SDS2(Steam Generator Low Level Trip) and found to be promising for further research and applications. 7 refs., 10 figs. (Author)

  10. Limitaciones para el desarrollo de energías renovables en Argentina

    Directory of Open Access Journals (Sweden)

    Marina Yesica Recalde

    2015-01-01

    Full Text Available En las últimas décadas las energías renovables han cobrado impulso a nivel mundial con un significativo impacto sobre el desarrollo sustentable de las naciones. Si bien diferentes trabajos analizan la eficiencia de políticas e instrumentos para la promoción de dichas fuentes, la mayoría de las veces se deja de lado el análisis de cómo el contexto en el cual las políticas son implementadas determina su performance. En este trabajo se analiza el desarrollo de las energías renovables en el mercado eléctrico argentino prestando especial atención a las condiciones de entorno al momento del diseño de las políticas, encontrándose que en la historia reciente han sido precisamente estas condiciones los principales motivos del bajo grado de penetración de las energías renovables en el sistema eléctrico argentino.

  11. SOME PROBLEMS OF ENERGY SAVING IN THE COURSE OF RENOVATION OF BUILDINGS

    Directory of Open Access Journals (Sweden)

    Samarin Oleg Dmitrievich

    2012-10-01

    Full Text Available The implementation of energy saving actions in the course of renovation of residential houses is considered by the author in the article. The need to change the mode of operation of heat supply systems and the employment of steam-gas co-generation power plants as a source of heat is demonstrated. Therefore, the problem of power saving in the course of renovation of residential houses comprises several constituents, and its resolution involves the implementation of a number of interrelated organizational and process-related actions. This is the only way to avoid conflicts and to reduce power consumption and losses at each stage of power generation and transmission absent of any deterioration of the internal microclimate in renovated premises. The implementation of the aforementioned actions will make it possible to convert to the automatic energy consumption reduction mode through the implementation of engineering solutions and without any immediate involvement of legal entities. This methodology may arouse the interest of both producers and consumers of thermal and electric energy.

  12. Implicaciones ambientales de las tecnologías de energía renovable

    Directory of Open Access Journals (Sweden)

    Jan Mahirt-Smith

    2011-12-01

    Full Text Available Las tecnologías de energía renovable como la eólica, la solar y la biomasa, hacen un uso del suelo más intenso que las de combustibles fósiles tradicionales y, geográficamente, sus implicaciones ambientales son más heterogéneas, por lo que presentan un gran desafío para las técnicas de evaluación de su ciclo de vida. Este trabajo presenta los resultados de una investigación bibliográfica alrededor de los siguientes temas: 1 cambios en el uso del suelo debido a la mayor producción de energía renovable; 2 impactos del uso de suelo; 3 variabilidad geográfica en el inventario de datos; y 4 efectos de la distribución de energía. Además, se revisa el grado de investigación que actualmente se aplica acerca de las tecnologías de energía renovable en campos como el eólico, el solar y la bioenergía y en la evaluación del ciclo de vida en general.

  13. New potentional of high-speed water jet technology for renovating concrete structures

    Science.gov (United States)

    Bodnárová, L.; Sitek, L.; Hela, R.; Foldyna, J.

    2011-06-01

    The paper discusses the background and results of research focused on the action of a high-speed water jet on concrete with different qualities. The sufficient and careful removal of degraded concrete layers is very important for the renovation of concrete structures. High-speed water jet technology is one of the most common methods used for removing degraded concrete layers. Different types of high-speed water jets were tested in the experimental part. The classical technology of a single continuous water jet generated with one nozzle was tested as well as the technology of revolving water jets generated by multiple nozzles (used mainly for the renovation of larger areas). A continuous flat water jet and pulsating flat water jet were tested the first time, because the connection of a water jet with the acoustic generator of a pulsating jet offers new possibilities for the use of a water jet (see [1] and [2]). A water jet with such a modification is capable of efficient action and can even be used for cutting solid concrete with a relatively low consumption of energy. A flat pulsating water jet which can be newly used for renovation seems to be a promising technology.

  14. Development of a multicriteria tool for optimizing the renovation of buildings

    Energy Technology Data Exchange (ETDEWEB)

    Chantrelle, Fanny Pernodet [Scientific and Technical Centre for Building, Marne la Vallee (France); Lyon University, ENTPE, DGCB LASH, Vaulx en Velin (France); Lahmidi, Hicham; Keilholz, Werner [Scientific and Technical Centre for Building, Marne la Vallee (France); Mankibi, Mohamed El; Michel, Pierre [Lyon University, ENTPE, DGCB LASH, Vaulx en Velin (France)

    2011-04-15

    The renovation of a building involves not just the fulfilment of functional requirements, but also considerations such as energy consumption, investment costs, environmental impact and wellbeing. As things stand, new design methods and tools are needed, and the aim of the research presented in this article was to develop a multicriteria tool, MultiOpt, for the optimization of renovation operations, with an emphasis on building envelopes, heating and cooling loads and control strategies. MultiOpt is based on existing assessment software and methods: it uses a genetic algorithm (NSGA-II) coupled to TRNSYS, and economic and environmental databases. This article illustrates its utilization in the renovation of a school in the southern French city of Nice which was representative of France's building stock. The study started with the monocriterion optimization of energy consumption, cost, thermal comfort, and life-cycle environmental impact. It then moved onto multicriteria optimizations. The monocriterion analyses focussed on the building's characteristics and performance; the multicriteria analyses were concerned with the interactions between the different objectives, and with identifying their convergences and divergences. The results demonstrated that MultiOpt can be used to compare different combinations of options and constraints, thus constituting a basis for operational decision-making. (author)

  15. A District Approach to Building Renovation for the Integral Energy Redevelopment of Existing Residential Areas

    Directory of Open Access Journals (Sweden)

    Mira Conci

    2017-05-01

    Full Text Available Building energy renovation quotas are not currently being met due to unfavorable conditions such as complex building regulations, limited investment incentives, historical preservation priorities, and technical limitations. The traditional strategy has been to incrementally lower the energy consumption of the building stock, instead of raising the efficiency of the energy supply through a broader use of renewable sources. This strategy requires an integral redefinition of the approach to energy building renovations. The joint project SWIVT elaborates on a district redevelopment strategy that combines a reduction in the energy demand of existing buildings and their physical interconnection within a local micro-grid and heating network. The district is equipped with energy generation and distribution technologies as well as hybrid thermal and electrical energy storage systems, steered by an optimizing energy management controller. This strategy is explored through three scenarios designed for an existing residential area in Darmstadt, Germany, and benchmarked against measured data. Presented findings show that a total primary energy balance at least 30% lower than that of a standard building renovation can be achieved by a cluster of buildings with different thermal qualities and connected energy generation, conversion, and storage systems, with only minimal physical intervention to existing buildings.

  16. Token-Aware Completion Functions for Elastic Processor Verification

    Directory of Open Access Journals (Sweden)

    Sudarshan K. Srinivasan

    2009-01-01

    Full Text Available We develop a formal verification procedure to check that elastic pipelined processor designs correctly implement their instruction set architecture (ISA specifications. The notion of correctness we use is based on refinement. Refinement proofs are based on refinement maps, which—in the context of this problem—are functions that map elastic processor states to states of the ISA specification model. Data flow in elastic architectures is complicated by the insertion of any number of buffers in any place in the design, making it hard to construct refinement maps for elastic systems in a systematic manner. We introduce token-aware completion functions, which incorporate a mechanism to track the flow of data in elastic pipelines, as a highly automated and systematic approach to construct refinement maps. We demonstrate the efficiency of the overall verification procedure based on token-aware completion functions using six elastic pipelined processor models based on the DLX architecture.

  17. Post Occupancy Evaluation of 23 Newly Renovated Apartments in Copenhagen

    DEFF Research Database (Denmark)

    Iqbal, Ahsan; Afshari, Alireza; Bergsøe, Niels Christian

    2016-01-01

    systems. All the ventilation units are equipped with parallel plate cross flow heat exchangers. The analysis in present article is based on the measured indoor quality parameters as well as energy consumptions. Among four different types of ventilation systems, Type 1 is a traditional decentralized...... ventilation system which works only on two speeds i.e. high airflow rates when kitchen exhaust is on otherwise nominal airflow rates. Type 2 ventilation systems are the decentralized ventilation system with motion sensors in hallways, humidity sensors in rooms and kitchen exhaust hood sensors. Type 3...

  18. Functional verification coverage measurement and analysis

    CERN Document Server

    Piziali, Andrew

    2007-01-01

    This book addresses a means of quantitatively assessing functional verification progress. Without this process, design and verification engineers, and management, are left guessing whether or not they have completed verifying the device they are designing.

  19. 10 CFR 300.11 - Independent verification.

    Science.gov (United States)

    2010-01-01

    ... skills required for verification are often cross-disciplinary. For example, an individual verifier...) Companies that provide verification services must use professionals that possess the necessary skills and...: American Institute of Certified Public Accountants; American National Standards Institute's...

  20. Biometric Technologies and Verification Systems

    CERN Document Server

    Vacca, John R

    2007-01-01

    Biometric Technologies and Verification Systems is organized into nine parts composed of 30 chapters, including an extensive glossary of biometric terms and acronyms. It discusses the current state-of-the-art in biometric verification/authentication, identification and system design principles. It also provides a step-by-step discussion of how biometrics works; how biometric data in human beings can be collected and analyzed in a number of ways; how biometrics are currently being used as a method of personal identification in which people are recognized by their own unique corporal or behavior

  1. Association of outdoor air pollution and indoor renovation with early childhood ear infection in China.

    Science.gov (United States)

    Deng, Qihong; Lu, Chan; Jiang, Wei; Zhao, Jinping; Deng, Linjing; Xiang, Yuguang

    2017-02-01

    Otitis media (OM) is a common infection in early childhood with repeated attacks that lead to long-term complications and sequelae, but its risk factors still remain unclear. To examine the risk of childhood OM for different indoor and outdoor air pollutants during different timing windows, with a purpose to identify critical windows of exposure and key components of air pollution in the development of OM. We conducted a retrospective cohort study of 1617 children aged 3-4 years in Changsha, China (2011-2012). Children's life-time prevalence of OM and exposure to indoor air pollution related to home renovation activities were surveyed by a questionnaire administered by the parents. Children's exposure to outdoor air pollution, including nitrogen dioxide (NO2), sulfur dioxide (SO2), and particulate matter with an aerodynamic diameter ≤ 10 μm (PM10), was estimated using the measured concentrations at municipal monitoring stations. The odds ratio (OR) and 95% confidence interval (CI) of childhood OM for prenatal and postnatal exposure to indoor and outdoor air pollution were examined by using logistic regression model. Life-time prevalence of OM in preschool children (7.3%) was associated not only with prenatal exposure to industrial air pollutant with adjusted OR (95% CI) = 1.44 (1.09-1.88) for a 27 μg/m(3) increase in SO2 but also with postnatal exposure to indoor renovations with OR (95% CI) = 1.62 (1.05-2.49) for new furniture and 1.81 (1.12-2.91) for redecoration, particularly in girls. Combined exposure to outdoor SO2 and indoor renovation significantly increased OM risk. Furthermore, we found that exposure to outdoor SO2 and indoor renovation were significantly associated with the onset but not repeated attacks of OM. Prenatal exposure to outdoor industrial air pollution and postnatal exposure to indoor renovation are independently associated with early childhood OM in China and may cause the OM onset. Copyright © 2016 Elsevier Ltd. All rights

  2. Composition of heavy metals and airborne fibers in the indoor environment of a building during renovation.

    Science.gov (United States)

    Latif, Mohd Talib; Baharudin, Nor Hafizah; Velayutham, Puvaneswary; Awang, Normah; Hamdan, Harimah; Mohamad, Ruqyyah; Mokhtar, Mazlin B

    2011-10-01

    The renovation of a building will certainly affect the quality of air in the vicinity of where associated activities were undertaken, this includes the quality of air inside the building. Indoor air pollutants such as particulate matter, heavy metals, and fine fibers are likely to be emitted during renovation work. This study was conducted to determine the concentration of heavy metals, asbestos and suspended particulates in the Biology Building, at the Universiti Kebangsaan, Malaysia (UKM). Renovation activities were carried out widely in the laboratories which were located in this building. A low-volume sampler was used to collect suspended particulate matter of a diameter size less than 10 μm (PM₁₀) and an air sampling pump, fitted with a cellulose ester membrane filter, were used for asbestos sampling. Dust was collected using a small brush and scope. The concentration of heavy metals was determined through the use of inductively coupled plasma-mass spectroscopy and the fibers were counted through a phase contrast microscope. The concentrations of PM₁₀ recorded in the building during renovation action (ranging from 166 to 542 μg m⁻³) were higher than the value set by the Department of Safety and Health for respirable dust (150 μg m⁻³). Additionally, they were higher than the value of PM₁₀ recorded in indoor environments from other studies. The composition of heavy metals in PM₁₀ and indoor dust were found to be dominated by Zn and results also showed that the concentration of heavy metals in indoor dust and PM₁₀ in this study was higher than levels recorded in other similar studies. The asbestos concentration was 0.0038 ± 0.0011 fibers/cc. This was lower than the value set by the Malaysian Department of Occupational, Safety and Health (DOSH) regulations of 0.1 fibers/cc, but higher than the background value usually recorded in indoor environments. This study strongly suggests that renovation issues need to be considered seriously

  3. Indoor air quality in green-renovated vs. non-green low-income homes of children living in a temperate region of US (Ohio)

    Energy Technology Data Exchange (ETDEWEB)

    Coombs, Kanistha C. [University of Cincinnati, Department of Environmental Health, P.O. Box 670056, Cincinnati, OH (United States); Chew, Ginger L. [Centers for Disease Control and Prevention (CDC), National Center for Environmental Health, Air Pollution and Respiratory Health Branch, 4770 Buford Hwy., N.E., MS-F60, Atlanta, GA (United States); Schaffer, Christopher [University of Cincinnati, Department of Environmental Health, P.O. Box 670056, Cincinnati, OH (United States); Ryan, Patrick H. [University of Cincinnati, Department of Environmental Health, P.O. Box 670056, Cincinnati, OH (United States); Department of Pediatrics, Cincinnati Children' s Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH (United States); Brokamp, Cole; Grinshpun, Sergey A. [University of Cincinnati, Department of Environmental Health, P.O. Box 670056, Cincinnati, OH (United States); Adamkiewicz, Gary [Harvard University, T.H. Chan School of Public Health, Department of Environmental Health, 401 Park Drive, Boston, MA (United States); Chillrud, Steve [Columbia University, Lamont-Doherty Earth Observatory, Geochemistry Division, P.O. Box 8000, Palisades, New York (United States); Hedman, Curtis [University of Wisconsin-Madison, Wisconsin State Laboratory of Hygiene, 465 Henry Mall, Madison, WI (United States); Colton, Meryl [Harvard University, T.H. Chan School of Public Health, Department of Environmental Health, 401 Park Drive, Boston, MA (United States); Ross, Jamie [Columbia University, Lamont-Doherty Earth Observatory, Geochemistry Division, P.O. Box 8000, Palisades, New York (United States); Reponen, Tiina [University of Cincinnati, Department of Environmental Health, P.O. Box 670056, Cincinnati, OH (United States)

    2016-06-01

    Green eco-friendly housing includes approaches to reduce indoor air pollutant sources and to increase energy efficiency. Although sealing/tightening buildings can save energy and reduce the penetration of outdoor pollutants, an adverse outcome can be increased buildup of pollutants with indoor sources. The objective of this study was to determine the differences in the indoor air quality (IAQ) between green and non-green homes in low-income housing complexes. In one housing complex, apartments were renovated using green principles (n = 28). Home visits were conducted immediately after the renovation, and subsequently at 6 months and at 12 months following the renovation. Of these homes, eight homes had pre-renovation home visits; this allowed pre- and post-renovation comparisons within the same homes. Parallel visits were conducted in non-green (control) apartments (n = 14) in a nearby low-income housing complex. The IAQ assessments included PM{sub 2.5}, black carbon, ultrafine particles, sulfur, total volatile organic compounds (VOCs), formaldehyde, and air exchange rate. Data were analyzed using linear mixed-effects models. None of the indoor pollutant concentrations were significantly different between green and non-green homes. However, we found differences when comparing the concentrations before and after renovation. Measured immediately after renovation, indoor black carbon concentrations were significantly lower averaging 682 ng/m{sup 3} in post-renovation vs. 2364 ng/m{sup 3} in pre-renovation home visits (p = 0.01). In contrast, formaldehyde concentrations were significantly higher in post-renovated (0.03 ppm) than in pre-renovated homes (0.01 ppm) (p = 0.004). Questionnaire data showed that opening of windows occurred less frequently in homes immediately post-renovation compared to pre-renovation; this factor likely affected the levels of indoor black carbon (from outdoor sources) and formaldehyde (from indoor sources) more than the renovation status

  4. Atomistic Galois insertions for flow sensitive integrity

    DEFF Research Database (Denmark)

    Nielson, Flemming; Nielson, Hanne Riis

    2017-01-01

    Several program verification techniques assist in showing that software adheres to the required security policies. Such policies may be sensitive to the flow of execution and the verification may be supported by combinations of type systems and Hoare logics. However, this requires user assistance...

  5. Automated Verification of Virtualized Infrastructures

    DEFF Research Database (Denmark)

    Bleikertz, Sören; Gross, Thomas; Mödersheim, Sebastian Alexander

    2011-01-01

    Virtualized infrastructures and clouds present new challenges for security analysis and formal verification: they are complex environments that continuously change their shape, and that give rise to non-trivial security goals such as isolation and failure resilience requirements. We present a pla...

  6. Eggspectation : organic egg verification tool

    NARCIS (Netherlands)

    Ruth, van S.M.; Hoogenboom, L.A.P.

    2011-01-01

    In 2009 RIKILT conducted a study on about 2,000 eggs to evaluate three different analytical verification methods: carotenoid profiling, fatty acid profiling and isotope ratio mass spectrometry. The eggs were collected from about 50 Dutch farms. The selection was based on the farms’ location and size

  7. Characteristics and Organic Renovation Strategies of Minority Vernacular Landscape%少数民族乡土景观特点及有机更新策略

    Institute of Scientific and Technical Information of China (English)

    王乐君; 王南希; 李雄

    2011-01-01

    为支持和保护我国乡土景观和少数民族的本土文化,以乡土景观概念为支撑,在剖析少数民族景观历史变迁和元素表达的基础上,研究了少数民族乡土景观具有自发性、民族性和地域性的特点,指出在现代文化洪流的冲击下,少数民族景观必须进行有机更新,并提出了有机更新应遵循的原则和策略,即整体保护下设计导则、立足当地原住民、传承文化境域的有机更新,在此前提下进行少数民族景观的规划和设计.%In order to support and protect the vernacular landscape and local culture of minority, the author discussed the spontaneity, nationality and territoriality features of minority vernacular landscapes based on analyzing historical changes and element expression of minority landscapes from the concept of vernacular landscape. The minority landscape should be organically renovated under the impact of modern cultural flow. The principles and strategies of establishing the guidelines under the overall protection, standing local indigenous people and inheriting local cultural circumstances should be followed in organic renovation of minority vernacular landscapes.

  8. Evaluation of Water Quality Renovation by Advanced Soil-Based Wastewater Treatment Systems

    Science.gov (United States)

    Cooper, J.; Loomis, G.; Kalen, D.; Boving, T.; Morales, I.; DeLuca, J.; Amador, J.

    2013-12-01

    25% of US households utilize onsite wastewater treatment systems (OWTS) for wastewater management. Advanced technologies were designed to overcome the inadequate wastewater treatment by conventional OWTS in critical shallow water table areas, such as coastal zones, in order to protect ground water quality. In addition to the septic tank and soil drainfield that comprise a conventional OWTS, advanced systems claim improved water renovation with the addition of sand filtration, timed dosing controls, and shallow placement of the infiltrative zone. We determined water quality renovation functions under current water table and temperature conditions, in anticipation of an experiment to measure OWTS response to a climate change scenario of 30-cm increase in water table elevation and 4C temperature increase. Replicate (n=3) intact soil mesocosms were used to evaluate the effectiveness of drainfields with a conventional wastewater delivery (pipe-and-stone) compared to two types of pressurized, shallow narrow drainfield. Results under steady state conditions indicate complete removal of fecal coliform bacteria, phosphorus and BOD by all soil-based systems. By contrast, removal of total nitrogen inputs was 16% in conventional and 11% for both advanced drainfields. Effluent waters maintained a steady state pH between 3.2 - 3.7 for all technologies. Average DO readings were 2.9mg/L for conventional drainfield effluent and 4.6mg/L for advanced, showing the expected oxygen uptake with shallow placement of the infiltrative zone. The conventional OWTS is outperforming the advanced with respect to nitrogen removal, but renovating wastewater equivalently for all other contaminants of concern. The results of this study are expected to facilitate development of future OWTS regulation and planning guidelines, particularly in coastal zones and in the face of a changing climate.

  9. Tamizado de tecnologias energeticas renovables para uso en industrias y servicios rurales: tres casos en Ecuador

    OpenAIRE

    Duque Rivera, J.; Ramirez Mosquera, A.; Zabala Ortiz, G.

    2009-01-01

    En este trabajo se presenta el desarrollo y aplicación de un esquema para tamizado de tecnologías de energías renovables para provisión de energía en industrias y servicios rurales en tres comunidades ecuatorianas. Necesidades identificadas incluyeron: provisión de electricidad para mejorar servicios de hospedaje en una comunidad alto-andina; provisión de agua potable en una comunidad isleña; mejoramiento de proceso de cocción de paja en una comunidad del litoral. Las tecnologías analizadas i...

  10. Prevention by Design: Construction and Renovation of Health Care Facilities for Patient Safety and Infection Prevention.

    Science.gov (United States)

    Olmsted, Russell N

    2016-09-01

    The built environment supports the safe care of patients in health care facilities. Infection preventionists and health care epidemiologists have expertise in prevention and control of health care-associated infections (HAIs) and assist with designing and constructing facilities to prevent HAIs. However, design elements are often missing from initial concepts. In addition, there is a large body of evidence that implicates construction and renovation as being associated with clusters of HAIs, many of which are life threatening for select patient populations. This article summarizes known risks and prevention strategies within a framework for patient safety.

  11. Application Of Steel Bar Bracings In Renovation And Modernization Of Historic Buildings

    Directory of Open Access Journals (Sweden)

    Kuchta Krzysztof

    2015-12-01

    Full Text Available The use of steel bracings is possible in all four stages of engineering activities in the renovation and modernization of historic buildings, i. e.: protecting, repairing, strengthening and rebuilding. Steel bracings are auxiliary structural systems, which, due to their relatively small cross-section dimensions and low weight, provide an efficient way to achieve the required resistance and stability of the original historic building structural systems. The steel structure in most cases is the tissue that differs in style and material of genuine tissue which is present in a renewed historic building, but is also often a rational solution acceptable to the conservation and structural point of view.

  12. Lead-based paint in dwellings: The potential for contamination of the home environment during renovation.

    Science.gov (United States)

    Inskip, M J; Hutton, M

    1987-12-01

    The quantity and particle size characteristics of lead in dust released during three different paint removal techniques was determined under controlled conditions and in situ in a dwelling. Air-lead and deposited dust-lead levels were highest after sanding but 'burning-off' and 'hot-air' removal methods also produced significant contamination. The importance of dust particle-size and lead is discussed in relation to the potential hazard to home renovators via inhalation and to children via the 'hand-to-mouth' route.

  13. Super-energy wrap-up model for renovation of standard wooden houses in Greenland?

    DEFF Research Database (Denmark)

    Bjarløv, Søren Peter; Vladyková, Petra

    2012-01-01

    as a robust building renovation method with focus on applying the membrane for air tightness with a minimum of risk of leakage, high level of insulation with very few thermal bridges, focus on fire protection by using insulation material of mineral wool and high attention on solving details in the building...... envelope. This interesting wrap-up and package solution can easily be applied to many standard wooden houses in Greenland, but also to wooden houses across the Arctic regions. Linking all these aspects lead to interesting findings about high energy savings, reduction of oil usage and decrease of greenhouse...

  14. Renovation of “Earth Port” for Net-Zero Energy Building

    OpenAIRE

    Imanari, Takehito; Ogawa, Satoshi; Nobe, Tatsuo; Tanabe, Shin-ichi

    2012-01-01

    A middle-sized office building (floor area : 5,645 m2), nicknamed “Earth Port,” was renovated with the intention of making it a ZEB (“net-zero energy building”) by 2030. As a first step, the following technologies were introduced. (1) Thermal network utilizing both solar heat and waste heat from gas cogeneration system (CGS) and gas engine driven heat pump (GHP) (2) Bright-feeling lighting system and other measures to utilize natural sunlight (3) Integrated power management system The thermal...

  15. Analysis of Solar Energy Use for Multi-Flat Buildings Renovation

    Directory of Open Access Journals (Sweden)

    Kęstutis Valančius

    2016-10-01

    Full Text Available The paper analyses the energy and financial possibilities to install renewable energy sources (solar energy generating systems when renovating multi-flat buildings. The aim is to analyse solar energy system possibilities for modernization of multi-flat buildings (5-storey, 9-storey and 16-storey, providing detailed conclusions about the appropriateness of the energy systems and financial aspects. It is also intended to determine the optimal technological combinations and solutions to reach the maximum energy benefits. For the research computer simulation tools “EnergyPRO” and “PV*SOL Premium” are chosen. Also actual collected heat and electricity consumption data is used for the analysis.

  16. EPIQR. Renovation tool for apartment buildings; EPIQR. Renovatie-tool voor appartementsgebouwen

    Energy Technology Data Exchange (ETDEWEB)

    Bluyssen, P.M.; Cox, C.; Plokker, W.; Nicolaas, H.J.; Soethout, L.L. [Afdeling Binnenmilieu, Bouwfysica en Installaties, TNO Bouw, Delft (Netherlands); Weerdenburg, M.J. [Weerdenburg Huisvesting Consultants WHC, Den Bosch (Netherlands)

    1998-10-01

    The aim of the title project (Energy Performance, Indoor environment Quality, Retrofit), partly sponsored by the European Union JOULE programme, was to develop a user-friendly software tool to list possible renovations of apartment buildings in Europe by means of which the quality of the indoor environment can be improved and energy saved. In this article an outline is given of the EPIQR project and programme. Also an overview is given of the use of EPIQR in 26 apartment buildings in European countries. 3 refs.

  17. Fuente alterna de energía renovable: Celdas solares orgánicas

    OpenAIRE

    Enrique Pérez Gutiérrez; José Luis Maldonado Rivera

    2013-01-01

    Las celdas solares como fuente de energía renovable basadas en materiales inorgánicos han mostrado un gran desarrollo en las últimas décadas, sin embargo el alto costo de su producción ha imposibilitado su amplio uso. Así, el empleo de materiales orgánicos en la fabricación de celdas solares es una alternativa actualmente considerada por diversos grupos como una tecnología paralela potencialmente útil. Los retos principales para las celdas orgá-nicas son el aumento de la efici...

  18. A BIM-based system for demolition and renovation waste estimation and planning

    Energy Technology Data Exchange (ETDEWEB)

    Cheng, Jack C.P., E-mail: cejcheng@ust.hk [Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology (Hong Kong); Ma, Lauren Y.H., E-mail: yingzi@ust.hk [Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology (Hong Kong)

    2013-06-15

    Highlights: ► We developed a waste estimation system leveraging the BIM technology. ► The system can calculate waste disposal charging fee and pick-up truck demand. ► We presented an example scenario demonstrating this system. ► Automatic, time-saving and wide applicability are the features of the system. - Abstract: Due to the rising worldwide awareness of green environment, both government and contractors have to consider effective construction and demolition (C and D) waste management practices. The last two decades have witnessed the growing importance of demolition and renovation (D and R) works and the growing amount of D and R waste disposed to landfills every day, especially in developed cities like Hong Kong. Quantitative waste prediction is crucial for waste management. It can enable contractors to pinpoint critical waste generation processes and to plan waste control strategies. In addition, waste estimation could also facilitate some government waste management policies, such as the waste disposal charging scheme in Hong Kong. Currently, tools that can accurately and conveniently estimate the amount of waste from construction, renovation, and demolition projects are lacking. In the light of this research gap, this paper presents a building information modeling (BIM) based system that we have developed for estimation and planning of D and R waste. BIM allows multi-disciplinary information to be superimposed within one digital building model. Our system can extract material and volume information through the BIM model and integrate the information for detailed waste estimation and planning. Waste recycling and reuse are also considered in our system. Extracted material information can be provided to recyclers before demolition or renovation to make recycling stage more cooperative and more efficient. Pick-up truck requirements and waste disposal charging fee for different waste facilities will also be predicted through our system. The results

  19. A BIM-based system for demolition and renovation waste estimation and planning.

    Science.gov (United States)

    Cheng, Jack C P; Ma, Lauren Y H

    2013-06-01

    Due to the rising worldwide awareness of green environment, both government and contractors have to consider effective construction and demolition (C&D) waste management practices. The last two decades have witnessed the growing importance of demolition and renovation (D&R) works and the growing amount of D&R waste disposed to landfills every day, especially in developed cities like Hong Kong. Quantitative waste prediction is crucial for waste management. It can enable contractors to pinpoint critical waste generation processes and to plan waste control strategies. In addition, waste estimation could also facilitate some government waste management policies, such as the waste disposal charging scheme in Hong Kong. Currently, tools that can accurately and conveniently estimate the amount of waste from construction, renovation, and demolition projects are lacking. In the light of this research gap, this paper presents a building information modeling (BIM) based system that we have developed for estimation and planning of D&R waste. BIM allows multi-disciplinary information to be superimposed within one digital building model. Our system can extract material and volume information through the BIM model and integrate the information for detailed waste estimation and planning. Waste recycling and reuse are also considered in our system. Extracted material information can be provided to recyclers before demolition or renovation to make recycling stage more cooperative and more efficient. Pick-up truck requirements and waste disposal charging fee for different waste facilities will also be predicted through our system. The results could provide alerts to contractors ahead of time at project planning stage. This paper also presents an example scenario with a 47-floor residential building in Hong Kong to demonstrate our D&R waste estimation and planning system. As the BIM technology has been increasingly adopted in the architectural, engineering and construction industry

  20. The Use of Vegetation for Social Housing Renovation: a case study in the city of Palermo

    DEFF Research Database (Denmark)

    Pastore, L.; Corrao, R.; Heiselberg, Per

    2013-01-01

    The paper shows the first results of a research carried out at the University of Palermo, which aims to indentify sustainable strategies for the renovation of social housing in the Mediterranean Basin, with focuson the use of vegetation as strategy for the enhancement of urban microclimate...... and thermal comfort. To achieve these goals the social housing complex of Medaglie d’Oro in the city of Palermo was chosen as case study in order to carry out some analyses for the assessment of outdoor comfort parameters of the area. By means of numerical simulations performed with the software ENVI...

  1. Renovation And Adaptation Of The Historic Olsztyn Purification House Bet Tahara Into A Public Utility Building

    Science.gov (United States)

    Deja, Barbara Maria

    2015-09-01

    The historic Jewish Purification House Bet Tahara was erected in Olsztyn in 1913 on the basis of the debut design of Erich Mendelsohn, a world-famous architect born in Olsztyn. The most valuable element of the building is a self-supporting pyramid vault above a mourning hall. The paper presents the interesting structure of the building, its technical condition before renovation, as well as the scope of work involved in adapting it into a public utility building - MENDELSOHN HOUSE Intercultural Dialogue Centre. The undertaking was executed thanks to the commitment of the building's leaseholder - "Borussia" Cultural Community Association, which raised money for this goal from public funds.

  2. The influence of end-user perception on the economic feasibility of sustainable building skin renovations

    OpenAIRE

    Bogers, B.A.; Van den Berg, D.; Zijlstra, S.; de Jong, P.

    2015-01-01

    Considering the small addition in the housing supply of newly built dwellings, meeting sustainable goals in the Netherlands will have to come from the existing housing supply. TU Delft’s Solar Decathlon 2014 design focuses on achieving a zero energy renovation that is both sustainable as well as attractive for inhabitants of the most frequent housing typology in the Netherlands, a row house. A strong emphasis in the design has been the expansion from the focus on energy efficiency and pay-bac...

  3. Using a One-Stop-Shop Concept to Guide Decisions when Single-Family Houses are renovated

    DEFF Research Database (Denmark)

    Grøn Bjørneboe, Matilde; Svendsen, Svend; Heller, Alfred

    2017-01-01

    One way of reducing the use of fossil fuels in Denmark is to explore possible energy savings in the building stock, especially the large number of single-family houses built from 1960 through 1980. Energy renovation in this housing segment is progressing slowly. The aim of this project was to det......One way of reducing the use of fossil fuels in Denmark is to explore possible energy savings in the building stock, especially the large number of single-family houses built from 1960 through 1980. Energy renovation in this housing segment is progressing slowly. The aim of this project...... was to determine how a one-stop-shop (OSS) or full-service concept could be used to guide the extensive energy renovation of single-family houses. The purpose was partly to identify the benefits and disadvantages of using the concept and partly to evaluate the potential of the OSS concept for increasing the degree...

  4. Application of CFD in Renovation Design of Inlet Pipe in a Pumping Station%CFD 方法在泵站进水管更新改造设计中的运用

    Institute of Scientific and Technical Information of China (English)

    夏学坤; 杨祖强; 罗希

    2014-01-01

    Flow patterns in the eccentric reducer of inlet pipe in a pumping station are simulated by the compuational fluid dynamics ( CFD ) method.The standard model and calculation procedure are introducted .Three renovation schemes with different lengths of ecentric reducer under the rated conditions are simulated .The flow patterns and head losses are analyzed in detail .An optimal scheme is finally determined for the renovation project .%采用CFD方法对泵站进水管偏心异径管连接段流态进行模拟,并介绍了标准κ-ε模型和计算方法,通过计算额定工况下3种不同长度的偏心异径管方案,分析了其流态变化规律和水头损失,从而确定最优方案,解决了实际工程问题。

  5. Analysis and experimental verification of turbulence models in flow simulation for hydrodynamic coupling under braking condition%制动工况下液力偶合器流场湍流模型分析与验证

    Institute of Scientific and Technical Information of China (English)

    柴博森; 项玥; 马文星; 遇超; 寇尊权

    2016-01-01

    合理选择湍流模型是获取准确和可靠数值模拟结果的关键。该文采用3种湍流模型(标准k-ε模型、分离涡模型、大涡模拟模型)仿真制动工况下方形腔液力偶合器流场,提取流速场和涡量场。基于粒子图像测速(particle image velocimetry,PIV)技术测量液力偶合器制动工况下流场,将数值模拟结果与PIV试验结果进行对比,以PIV试验测量结果作为评价基准,分析采用3种湍流模型计算流场结果的差异性,完成湍流模型的适用性分析。结果表明,标准k-ε模型仿真结果与PIV试验结果误差较大;采用大涡模拟模型模拟主流区域流场结构分布更加真实,仿真结果能够较好地解释主流区域多尺度涡旋运动规律和能量耗散机理;采用分离涡模型能够更准确地捕捉近壁面和角涡区高梯度流场结构分布。研究结果可为液力偶合器流场精确计算与性能预测提供参考。%Hydrodynamic coupling is used for power transmission in heavy duty drives, such as power stations, ship propulsion, band conveyers, mills, and larger transport vehicles. Their hydrodynamic principle enables a low-wear torque to convert from a drive to a load. The flow in a hydrodynamic coupling is one of the most complex problems encountered in engineering fluid mechanics. The external performance of hydrodynamic coupling is determined by its internal distribution of flow field. It is very important to make a deep research on the internal distribution of flow field for the performance improvement and structural optimization in the design of hydrodynamic coupling. Numerical simulation is a main way to study the internal flow field of hydrodynamic coupling. The results of numerical simulation that are calculated by different turbulence models are quite different. In order to obtain accurate and reliable results of numerical simulation, it is a key to choose a reasonable turbulence model. The

  6. ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT; UV DISINFECTION FOR REUSE APPLICATION, AQUIONICS, INC. BERSONINLINE 4250 UV SYSTEM

    Science.gov (United States)

    Verification testing of the Aquionics, Inc. bersonInLine® 4250 UV System to develop the UV delivered dose flow relationship was conducted at the Parsippany-Troy Hills Wastewater Treatment Plant test site in Parsippany, New Jersey. Two full-scale reactors were mounted in series. T...

  7. ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT: UV DISINFECTION FOR REUSE APPLICATIONS, ONDEO DEGREMONT, INC., AQUARAY® 40 HO VLS DISINFECTION SYSTEM

    Science.gov (United States)

    Verification testing of the Ondeo Degremont, Inc. Aquaray® 40 HO VLS Disinfection System to develop the UV delivered dose flow relationship was conducted at the Parsippany-Troy Hills wastewater treatment plant test site in Parsippany, New Jersey. Three reactor modules were m...

  8. Formal Verification of Continuous Systems

    DEFF Research Database (Denmark)

    Sloth, Christoffer

    2012-01-01

    and the verification procedures should be algorithmically synthesizable. Autonomous control plays an important role in many safety-critical systems. This implies that a malfunction in the control system can have catastrophic consequences, e.g., in space applications where a design flaw can result in large economic...... losses. Furthermore, a malfunction in the control system of a surgical robot may cause death of patients. The previous examples involve complex systems that are required to operate according to complex specifications. The systems cannot be formally verified by modern verification techniques, due......The purpose of this thesis is to develop a method for verifying timed temporal properties of continuous dynamical systems, and to develop a method for verifying the safety of an interconnection of continuous systems. The methods must be scalable in the number of continuous variables...

  9. Program Verification of Numerical Computation

    OpenAIRE

    Pantelis, Garry

    2014-01-01

    These notes outline a formal method for program verification of numerical computation. It forms the basis of the software package VPC in its initial phase of development. Much of the style of presentation is in the form of notes that outline the definitions and rules upon which VPC is based. The initial motivation of this project was to address some practical issues of computation, especially of numerically intensive programs that are commonplace in computer models. The project evolved into a...

  10. Kleene Algebra and Bytecode Verification

    Science.gov (United States)

    2016-04-27

    Bytecode 2005 Preliminary Version Kleene Algebra and Bytecode Verification Lucja Kot 1 Dexter Kozen 2 Department of Computer Science Cornell...first-order methods that inductively annotate program points with abstract values. In [6] we introduced a second-order approach based on Kleene algebra ...form a left-handed Kleene algebra . The dataflow labeling is not achieved by inductively labeling the program with abstract values, but rather by

  11. Indoor air quality in green-renovated vs. non-green low-income homes of children living in a temperate region of US (Ohio).

    Science.gov (United States)

    Coombs, Kanistha C; Chew, Ginger L; Schaffer, Christopher; Ryan, Patrick H; Brokamp, Cole; Grinshpun, Sergey A; Adamkiewicz, Gary; Chillrud, Steve; Hedman, Curtis; Colton, Meryl; Ross, Jamie; Reponen, Tiina

    2016-06-01

    Green eco-friendly housing includes approaches to reduce indoor air pollutant sources and to increase energy efficiency. Although sealing/tightening buildings can save energy and reduce the penetration of outdoor pollutants, an adverse outcome can be increased buildup of pollutants with indoor sources. The objective of this study was to determine the differences in the indoor air quality (IAQ) between green and non-green homes in low-income housing complexes. In one housing complex, apartments were renovated using green principles (n=28). Home visits were conducted immediately after the renovation, and subsequently at 6 months and at 12 months following the renovation. Of these homes, eight homes had pre-renovation home visits; this allowed pre- and post-renovation comparisons within the same homes. Parallel visits were conducted in non-green (control) apartments (n=14) in a nearby low-income housing complex. The IAQ assessments included PM2.5, black carbon, ultrafine particles, sulfur, total volatile organic compounds (VOCs), formaldehyde, and air exchange rate. Data were analyzed using linear mixed-effects models. None of the indoor pollutant concentrations were significantly different between green and non-green homes. However, we found differences when comparing the concentrations before and after renovation. Measured immediately after renovation, indoor black carbon concentrations were significantly lower averaging 682 ng/m(3) in post-renovation vs. 2364 ng/m(3) in pre-renovation home visits (p=0.01). In contrast, formaldehyde concentrations were significantly higher in post-renovated (0.03 ppm) than in pre-renovated homes (0.01 ppm) (p=0.004). Questionnaire data showed that opening of windows occurred less frequently in homes immediately post-renovation compared to pre-renovation; this factor likely affected the levels of indoor black carbon (from outdoor sources) and formaldehyde (from indoor sources) more than the renovation status itself. To reduce IAQ

  12. Nuclear Data Verification and Standardization

    Energy Technology Data Exchange (ETDEWEB)

    Karam, Lisa R.; Arif, Muhammad; Thompson, Alan K.

    2011-10-01

    The objective of this interagency program is to provide accurate neutron interaction verification and standardization data for the U.S. Department of Energy Division of Nuclear Physics programs which include astrophysics, radioactive beam studies, and heavy-ion reactions. The measurements made in this program are also useful to other programs that indirectly use the unique properties of the neutron for diagnostic and analytical purposes. These include homeland security, personnel health and safety, nuclear waste disposal, treaty verification, national defense, and nuclear based energy production. The work includes the verification of reference standard cross sections and related neutron data employing the unique facilities and capabilities at NIST and other laboratories as required; leadership and participation in international intercomparisons and collaborations; and the preservation of standard reference deposits. An essential element of the program is critical evaluation of neutron interaction data standards including international coordinations. Data testing of critical data for important applications is included. The program is jointly supported by the Department of Energy and the National Institute of Standards and Technology.

  13. Regression Verification Using Impact Summaries

    Science.gov (United States)

    Backes, John; Person, Suzette J.; Rungta, Neha; Thachuk, Oksana

    2013-01-01

    Regression verification techniques are used to prove equivalence of syntactically similar programs. Checking equivalence of large programs, however, can be computationally expensive. Existing regression verification techniques rely on abstraction and decomposition techniques to reduce the computational effort of checking equivalence of the entire program. These techniques are sound but not complete. In this work, we propose a novel approach to improve scalability of regression verification by classifying the program behaviors generated during symbolic execution as either impacted or unimpacted. Our technique uses a combination of static analysis and symbolic execution to generate summaries of impacted program behaviors. The impact summaries are then checked for equivalence using an o-the-shelf decision procedure. We prove that our approach is both sound and complete for sequential programs, with respect to the depth bound of symbolic execution. Our evaluation on a set of sequential C artifacts shows that reducing the size of the summaries can help reduce the cost of software equivalence checking. Various reduction, abstraction, and compositional techniques have been developed to help scale software verification techniques to industrial-sized systems. Although such techniques have greatly increased the size and complexity of systems that can be checked, analysis of large software systems remains costly. Regression analysis techniques, e.g., regression testing [16], regression model checking [22], and regression verification [19], restrict the scope of the analysis by leveraging the differences between program versions. These techniques are based on the idea that if code is checked early in development, then subsequent versions can be checked against a prior (checked) version, leveraging the results of the previous analysis to reduce analysis cost of the current version. Regression verification addresses the problem of proving equivalence of closely related program

  14. MERCADO INTERNACIONAL DE ENERGÍAS RENOVABLES: PRODUCCIÓN Y EXPORTACIÓN DE BIODIESEL EN MICHOACÁN

    OpenAIRE

    ABURTO MARTÍNEZ, JANNETE ANDREA

    2012-01-01

    A escala internacional el cambio climático y el agotamiento de las reservas de combustibles fósiles, han provocado la necesidad de recurrir a fuentes de energía renovable como los biocombustibles: etanol y biodiesel. Lo anterior proyecta una tendencia a largo plazo para la sustitución de combustibles fósiles por energías renovables. En este sentido los países que se incorporen a esta reconversión, tienen la posibilidad de acceder a oportunidades económicas de magnitudes conside...

  15. MERCADO INTERNACIONAL DE ENERGÍAS RENOVABLES: PRODUCCIÓN Y EXPORTACIÓN DE BIODIESEL EN MICHOACÁN

    OpenAIRE

    ABURTO MARTÍNEZ, JANNETE ANDREA

    2012-01-01

    A escala internacional el cambio climático y el agotamiento de las reservas de combustibles fósiles, han provocado la necesidad de recurrir a fuentes de energía renovable como los biocombustibles: etanol y biodiesel. Lo anterior proyecta una tendencia a largo plazo para la sustitución de combustibles fósiles por energías renovables. En este sentido los países que se incorporen a esta reconversión, tienen la posibilidad de acceder a oportunidades económicas de magnitudes conside...

  16. Integración paisajística y territorial de las energías renovables

    OpenAIRE

    2012-01-01

    El impulso logrado por las energías renovables en Europa no se entiende fuera de la apuesta expresada en los programas energéticos oficiales, su alta aceptación social y el interés de grandes empresas, que ven traducida esa aceptación y apoyo político en sustanciosos dividendos. Sin embargo, esta implementación no está exenta de contradicciones y conflictos, pues a diferencia de las energías convencionales los sistemas renovables utilizan recursos dispersos. Ello explica que den lugar a qu...

  17. Numerical calculation of the stress-strain state of non-rigid pavements, renovated by cold recycling technology

    Directory of Open Access Journals (Sweden)

    Світлана Михайлівна Талах

    2017-01-01

    Full Text Available The problem of improving the scientific basis to determine the stress-strain state of non-rigid pavements, renovated by cold recycling technology, is considered. The results of numerical calculation of stress-strain state of non-rigid pavements in the section of road Kyv-Kovel (297 + 700 km - 302 + 400 km are given using automated calculation software complex of thin-walled spatial structures (KARTPK. The real state of the road section through 8.5 years after the renovation is analyzed

  18. Health and housing outcomes from green renovation of low-income housing in Washington, DC.

    Science.gov (United States)

    Jacobs, David E; Breysse, Jill; Dixon, Sherry L; Aceti, Susan; Kawecki, Carol; James, Mark; Wilson, Jay

    2014-03-01

    Green building systems have proliferated recently, but studies are limited of associated health and housing outcomes. The authors measured self-reported resident physical and mental health, allergens, and building conditions at baseline and one-year follow-up in a low-income housing development being renovated in accordance with green healthy housing improvements (Enterprise Green Communities standards and Leadership in Energy & Environmental Design [LEED] gold certification). Self-reported general health in adults significantly improved from 59% to 67% (p = .026), with large statistically significant improvements in water/ dampness problems, cockroaches and rodents, and reduced pesticide use. Median cockroach (Bla g1) and mouse (Mus m1) allergen dust loadings showed large and statistically significant reductions from baseline to three months postintervention and were sustained at one year (both p Green Communities and LEED standards in low-income housing renovation improves health and housing conditions and can help to reduce disparities. All green housing standards should include health-related requirements.

  19. Renovation houses in Roosendaal, Netherlands, become passive houses; Roosendaalse renovatiewoningen worden passiefhuizen

    Energy Technology Data Exchange (ETDEWEB)

    Hofsink, P.; Corba, J. [J.E. Stork Air, Zwolle (Netherlands)

    2010-05-15

    During the presentation of the VSK Awards 2010, the Dutch renovation project 'De Kroeven' received a certificate in the category 'Integral energy performances'. It is the largest passive house project for renovation in the Netherlands. The requirements for this project were set at 25 kWh m{sup 2}/a for space heating and 130 kWh m{sup 2}/a for the required primary energy, to be used for tap water, household appliances and auxiliary energy of the installation. [Dutch] Renovatieproject 'De Kroeven' ontving tijdens de uitreiking van de VSK Awards 2010 een certificaat in de categorie 'lntegrale Energieprestaties'. Het is het grootste passiefhuisproject voor renovatie in Nederland. De eisen voor dit project werden vastgesteld op 25 kWh m{sup 2}/a voor ruimteverwarming en 130 kWh/m{sup 2}/a voor de benodigde primaire energie, onder andere voor tapwater, huishoudelijke apparatuur en hulpenergie van de installatie.

  20. Means for the regulation of renewable energies; Instrumentos de regulacion para renovables

    Energy Technology Data Exchange (ETDEWEB)

    Peraza, Alejandro [Comision Reguladora de Energia, Mexico (Mexico)

    2007-06-15

    It is basically described in this presentation, those means used by the Comision Reguladora de Energia (CRE) in order to control the distribution of the available renewable energies, as well as to show the modifications done to its contracts. Besides, there are described the most relevant information about the CRE's law. There are mentioned some of the changes done to some clauses of different contracts, among the contracts found here there can be: contract for the interconnection of renewable energies, contract for the interconnection for a small source of solar energy. [Spanish] En esta presentacion se describen primordialmente los instrumentos que la Comision Reguladora de Energia (CRE) utiliza con el fin de reglamentar la distribucion de las diversas energias renovables disponibles, asi como mostrar las modificaciones que se han realizado en sus contratos. Ademas, se describen los principales aspectos de la Ley de la CRE. Asimismo, se mencionan algunas de las modificaciones que se les ha hecho a diversos contratos: Contrato de interconexion de renovables, contrato de interconexion para fuente de energia solar en pequena escala.

  1. PSB LLRF renovation: Initial beam tests of the new digital beam control system

    CERN Document Server

    Angoletta, ME; Butterworth, A; Findlay, A; Pedersen, F; CERN. Geneva. BE Department

    2009-01-01

    The beam control renovation project for CERN’s PS Booster (PSB) was started in autumn 2008. Its aim is to equip all four PSB rings with modern digital beam control systems, characterised by fully-PPM parameters and complete remote control. Additionally, all intermediate and input/output signals are to be remotely acquired in a digital way and in full PPM fashion, and displayed via the Oasis application program. The same digital technology concepts have already been successfully applied to the LEIR beam control system, which has acted as a pilot project for the whole PS Complex renovation project. This new technology allows a very flexible performance and can improve the system maintainability by becoming the standard for the PS Complex beam controls. This note details the first step in the PSB consolidation project, namely the beam control prototype tests carried out on PSB ring 4 in October and November 2008. Both C02 and C04 RF system have been successfully controlled; bunch splitting and extraction synch...

  2. The Phenomenon of Trust in Flat Owners’ Collective Renovation Strategies in Estonia

    Directory of Open Access Journals (Sweden)

    Liis Ojamäe

    2015-12-01

    Full Text Available Mobilising fl at owners into renovating residential blocks in post-socialist countries has been a complicated process. Evidence from Estonia shows that the success of collective renewal strategies depends not only on economic issues but also on ways investments are organised and, signifi cantly, the relationship of trust between diff erent actors. The paper aims at conceptualising the issue of institutional trust upon the experience of urban housing renewal in Estonia. It is contended that trust is crucial for the joint decision-making in a block as well as for facilitating negotiations between fl at owners’ associations, local municipalities and market actors. The paper draws on three qualitative studies conducted in Estonia during the 2000s, which allow asserting that trust towards new strategies of housing renewal can be achieved and maintained by ‘best practices’, which by concentrating expert knowledge also denote direct communication between experts and fl at owners. While it is important to raise the residents’ technical knowledgeability, it is indispensable to develop abilities to manage and communicate the renovation process between diff erent parties. The public sector is conceived to be a central actor in sustaining trust between actors who have no previous positive experience from collective residential strategies

  3. Partial model based walking control of quadruped locomotion robot with self renovation control function

    Energy Technology Data Exchange (ETDEWEB)

    Uchida, Hiroaki [Kisarazu National College of Technology, Kisarazu, Chiba (Japan); Nonami, Kenzo; Yanai, Takaaki [Chiba Univ. (Japan). Faculty of Engineering; Iguchi, Yoshihiko; Huang Qing Jiu [Chiba Univ. (Japan)

    2000-06-01

    It is considered that locomotion robots are aggressive under the circumstances where human hardly work, for example, in the nuclear power plant, in the bottom of the sea and on a planet. The injury and the fault of the robot might occur frequently under those circumstances. It is very important problem that the robot can realize the walking with the fault. This is very difficult problem for biped and quadruped robot to realize a stable walking in the case that actuator or sensor is broken. And, in walking of mammal, gait pattern is generated by neural oscillator existing in the spinal cord. In the case that a lower neural system is injured, mammal realize a walking by a higher neural system. Thus, mammal has a self renovation function. In this study, in order to realize the stable walking of the quadruped robot with fault, we discuss the control method with self renovation function for the fault of the decentralized controller and the angular sensor. First, we design the centralized controller of one leg by sliding mode control for the fault of decentralized controller. Second, Sky Hook Suspension Control is applied for the fault of the angular sensor. The proposed methods are verified by 3D simulations by CAD and experiments. (author)

  4. Undetected Bacillus pseudo-outbreak after renovation work in a teaching hospital.

    Science.gov (United States)

    Ohsaki, Yoshinobu; Koyano, Shin; Tachibana, Mineji; Shibukawa, Kiyoko; Kuroki, Masako; Yoshida, Itsuro; Ito, Yoshihisa

    2007-06-01

    A 602-bed capacity hospital underwent complete renovation from 1999 to 2004. In April 2005, the Infection Control Team was informed of the occurrence of three consecutive cases of Bacillus cereus bacteremia in a ward for patients with hematologic malignancies. A retrospective analysis of patients with Bacillus isolates was initiated. We found more Bacillus cereus isolates from blood samples in 2004 compare to the preceding years. Swab samples were collected in the particular ward from the surface of a working desk, filter unit of the air-conditioners, entrance of air inlet ducts, exit of the air outlet ducts and three-way valves of the particular ward under the consideration of iatrogenic contamination. Towels and gowns used in the ward were examined. Dens dust was noted in the filter of the air-conditioner and inlets/outlets of the air-ventilation system of the ward. Bacillus cereus was isolated from the dust, and from cleaned towels and gowns. PFGE fingerprinting differed among four patients' sample. We considered the present case as an undetected Bacillus cereus pseudo-outbreak that lasted for about one year after the renovation work of the hospital. We also considered that filters of the HVAC-system and towels and gowns were probable sources of the outbreak.

  5. Fingerprint verification based on wavelet subbands

    Science.gov (United States)

    Huang, Ke; Aviyente, Selin

    2004-08-01

    Fingerprint verification has been deployed in a variety of security applications. Traditional minutiae detection based verification algorithms do not utilize the rich discriminatory texture structure of fingerprint images. Furthermore, minutiae detection requires substantial improvement of image quality and is thus error-prone. In this paper, we propose an algorithm for fingerprint verification using the statistics of subbands from wavelet analysis. One important feature for each frequency subband is the distribution of the wavelet coefficients, which can be modeled with a Generalized Gaussian Density (GGD) function. A fingerprint verification algorithm that combines the GGD parameters from different subbands is proposed to match two fingerprints. The verification algorithm in this paper is tested on a set of 1,200 fingerprint images. Experimental results indicate that wavelet analysis provides useful features for the task of fingerprint verification.

  6. Automated verification of flight software. User's manual

    Science.gov (United States)

    Saib, S. H.

    1982-01-01

    (Automated Verification of Flight Software), a collection of tools for analyzing source programs written in FORTRAN and AED is documented. The quality and the reliability of flight software are improved by: (1) indented listings of source programs, (2) static analysis to detect inconsistencies in the use of variables and parameters, (3) automated documentation, (4) instrumentation of source code, (5) retesting guidance, (6) analysis of assertions, (7) symbolic execution, (8) generation of verification conditions, and (9) simplification of verification conditions. Use of AVFS in the verification of flight software is described.

  7. Wind-farm power performance verification

    Energy Technology Data Exchange (ETDEWEB)

    Dutilleux, P. [DEWI German Wind Energy Institute, Wilhelmshaven (Germany)

    2005-07-01

    Details of wind farm power performance verification procedures were presented. Verifications were performed at the DEWI test site at Wilhelmhaven, Germany. Types of power performance guarantees included power performance of individual turbines with IEC verification measurement, and Nacelle anemometer verification. In addition, availability guarantees were examined, as well as issues concerning energy production guarantees of complete wind farms in relation to nearby meteorology masts. An evaluation of power curve verification measurements was presented as well as measurement procedures relating to IEC standards. Methods for Nacelle anemometry verification included calibration of the anemometer; documentation of its exact position and chain signal; and end-to-end calibration from sensor to SCADA data base. Classification of anemometers included impact of dynamical effects; and influence on annual energy production. An example of a project for performance verification of a wind farm with 9 identical wind turbines was presented. The significance of status signals was discussed, as well as alternative methods for power-curve measurements. Evaluation procedures for energy yield and power curve verifications were presented. The upcoming set of IEC standards concerning power curve measurements was discussed. Various alternative verification procedures for wind farm power performance were reviewed. refs., tabs., figs.

  8. The SeaHorn Verification Framework

    Science.gov (United States)

    Gurfinkel, Arie; Kahsai, Temesghen; Komuravelli, Anvesh; Navas, Jorge A.

    2015-01-01

    In this paper, we present SeaHorn, a software verification framework. The key distinguishing feature of SeaHorn is its modular design that separates the concerns of the syntax of the programming language, its operational semantics, and the verification semantics. SeaHorn encompasses several novelties: it (a) encodes verification conditions using an efficient yet precise inter-procedural technique, (b) provides flexibility in the verification semantics to allow different levels of precision, (c) leverages the state-of-the-art in software model checking and abstract interpretation for verification, and (d) uses Horn-clauses as an intermediate language to represent verification conditions which simplifies interfacing with multiple verification tools based on Horn-clauses. SeaHorn provides users with a powerful verification tool and researchers with an extensible and customizable framework for experimenting with new software verification techniques. The effectiveness and scalability of SeaHorn are demonstrated by an extensive experimental evaluation using benchmarks from SV-COMP 2015 and real avionics code.

  9. Numerical Model of Flow and Heat Transfer for Manned Spacecraft Pressurized Cabin and Its Ground Verification%载人航天器密封舱流动和传热数值模型及其地面验证

    Institute of Scientific and Technical Information of China (English)

    卢威; 黄家荣; 范宇峰; 钟奇

    2011-01-01

    In order to solve the complex heat lransfer problem coupled with air flow, solid conduction and radiacion in a manned spacecraft pressurized cabin, a numerical model of flow and heat transfer for the manned spacecraft pressurized cabin is built. The simulation and analysis of air flow and heat transfer are performed under ground test conditions, and the numerical model is suhsequently validated by test results. The results indicate that the numerical model is reliable wiih a high fidelity, and the simulation results using this model are found to highly agree with the ground test data, which could be further used for performance assessment of thermal control system( TCS) , orbit support and failure management.%为求解载人航天器密封舱内复杂的空气对流、导热和辐射三者耦合的传热问题,本文建立了载人航天器密封舱的流动与传热数值模型,对地面试验状态下密封舱内的空气流动与传热进行了仿真分析,并利用试验结果对数值模型进行了验证.结果表明,建立的数值模型可靠且具有较高精度,仿真结果与地面试验数据吻合性较好,可进一步用于热控系统性能评估、在轨支持和故障处理.

  10. Numerical simulation and experimental verification of effect of CO2 enrichment on flow field of greenhouse%增施CO2气肥对温室流场影响的数值模拟及验证

    Institute of Scientific and Technical Information of China (English)

    刘妍华; 曾志雄; 郭嘉明; 吕恩利; 孟庆林

    2015-01-01

    Carbon dioxide (CO2) is one of the important raw materials for photosynthesis of crops in greenhouse, which can increase the harvest of the crops. In order to analyze the performance of CO2 fertilizer enrichment, this paper took indoor environment of greenhouse as the research object, and by means of unstructured mesh generation method, a two-dimensional turbulence computational model of greenhouse was built by ICEM CFD (the integrated computer engineering and manufacturing code for computational fluid dynamics) technique. After building 7532 triangle/quadrangle meshes, the skewness of mesh model was less than 0.75. To solve two-dimensional computational model of greenhouse, the CFD software FLUENT and the SIMPLE algorithm were used. Meanwhile, the porous model, the DO (discrete ordinates) model and thek-ε model were adopted. Governing equations of finite volume method were employed, including mass, momentum and energy conservation equations. In computational model, CO2 enriching inlet was set with the condition of mass flow inlet while outlet was set with the condition of pressure outlet through pre-calculation. And crop area was defined as porous material with the porosity of 0.8. Adopting steady-state solver to operate, environmental parameters such as indoor temperature, nitrogen (N2) concentration, oxygen (O2) concentration and CO2concentration should be initialized when flow field of greenhouse was stable. Then transient solver was needed to numerical simulation when acceleration of gravity was 9.8 m/s2 and step size was 0.01 s. By such methods, the effects of CO2jetting height, enriching flow speed and other factors on CO2 enrichment property were computed while the change of CO2concentration and distribution regularities were studied. After the simulations, some results were obtained. CO2 enrichment process had little effect on temperature of crop area, and both temperature distribution and air velocity distribution of crop area were uniform. As CO2

  11. Early Development of UVM based Verification Environment of Image Signal Processing Designs using TLM Reference Model of RTL

    Directory of Open Access Journals (Sweden)

    Abhishek Jain

    2014-01-01

    Full Text Available With semiconductor industry trend of “smaller the better”, from an idea to a final product, more innovation on product portfolio and yet remaining competitive and profitable are few criteria which are culminating into pressure and need for more and more innovation for CAD flow, process management and project execution cycle. Project schedules are very tight and to achieve first silicon success is key for projects. This necessitates quicker verification with better coverage matrix. Quicker Verification requires early development of the verification environment with wider test vectors without waiting for RTL to be available. In this paper, we are presenting a novel approach of early development of reusable multi-language verification flow, by addressing four major activities of verification – 1. Early creation of Executable Specification 2. Early creation of Verification Environment 3. Early development of test vectors and 4. Better and increased Re-use of blocks Although this paper focuses on early development of UVM based Verification Environment of Image Signal Processing designs using TLM Reference Model of RTL, same concept can be extended for non-image signal processing designs.

  12. 76 FR 40912 - Notice of Availability of the Draft Environmental Assessment for the Renovation of the Charles F...

    Science.gov (United States)

    2011-07-12

    ... replacement of mechanical systems to meet high performance green building standards, and making needed... ADMINISTRATION Notice of Availability of the Draft Environmental Assessment for the Renovation of the Charles F. Prevedel Federal Building and Demolition of Federal Buildings 100, 101, and 102 at the Federal...

  13. Energy renovation of single-family houses in Denmark utilising long-term financing based on equity

    DEFF Research Database (Denmark)

    Kragh, Jesper; Rose, Jørgen

    2011-01-01

    in long-term property mortgage loans and utilising it for extensive energy renovation improves both the economy and the extent of included measures. Approximately 30% of energy consumption in Denmark is used for space heating. The existing 1 million single-family houses account for approximately half...

  14. Method for a component-based economic optimisation in design of whole building renovation versus demolishing and rebuilding

    DEFF Research Database (Denmark)

    Morelli, Martin; Harrestrup, Maria; Svendsen, Svend

    2014-01-01

    of the method from macroeconomic and private financial perspectives. Conclusion: The example shows that the investment cost and future market value of the building are the dominant factors in deciding whether to renovate an existing building or to demolish it and thereafter erect a new building. Additionally...

  15. 对旋式轴流风机全角度整机数值模拟及试验验证%Numerical Simulation and Test Verification of Counter-rotating Axial Flow Fan with Variable Angles

    Institute of Scientific and Technical Information of China (English)

    赵强; 邢印

    2014-01-01

    Based on the numerical simulation on counter-rotating axial flow fan with different turbulence models under variable angles and variable operation conditions, the test data of prototype was compared and the regularity of turbulence model was explored, which provided a certain foundation for reasonable selecting turbulence model under numerical simulation of counter-rotating axial flow fan under different variable angles. Aiming at the performance adjustment of counter-rotating axial flow fan for mine generally adopting changing the I and II stage impeller blade installation angles to meet operating conditions of mine, the numerical simulation with variable angles can effectively verify the rationality of aerodynamic performance characteristics and design operating points of fan with variable angles. Based on the further analysis on aerodynamic performance of the optimal matching angle, the optimal matching relationship of the two stages impeller power was explored.%通过对对旋式轴流风机采用不同的湍流模型进行多角度和多工况点整机数值模拟,并对比试制样机试验数据,探索湍流模型的规律性,为对旋式轴流风机全角度整机数值模拟下湍流模型的合理选择,提供了一定的依据;通过全角度整机数值模拟,有效地验证了全角度下风机的气动性能特性和设计工况点的合理性,并对I、II级叶轮叶片安装角进行正交数值模拟试验,筛选出I、II级叶轮叶片最佳匹配角度,通过进一步分析最佳匹配角度的气动性能,探索了两级叶轮功率最佳匹配关系。

  16. Formal Verification of UML Profil

    DEFF Research Database (Denmark)

    Bhutto, Arifa; Hussain, Dil Muhammad Akbar

    2011-01-01

    The Unified Modeling Language (UML) is based on the Model Driven Development (MDD) approach which capturing the system functionality using the platform-independent model (PMI) and appropriate domain-specific languages. In UML base system notations, structural view is model by the class, components...... and object diagrams and behavioral view model by the activity, use case, state, and sequence diagram. However, UML does not provide the formal syntax, therefore its semantics is not formally definable, so for assure of correctness, we need to incorporate semantic reasoning through verification, specification...

  17. Formal Verification of NTRUEncrypt Scheme

    Directory of Open Access Journals (Sweden)

    Gholam Reza Moghissi

    2016-04-01

    Full Text Available In this paper we explore a mechanized verification of the NTRUEncrypt scheme, with the formal proof system Isabelle/HOL. More precisely, the functional correctness of this algorithm, in its reduced form, is formally verified with computer support. We show that this scheme is correct what is a necessary condition for the usefulness of any cryptographic encryption scheme. Besides, we present a convenient and application specific formalization of the NTRUEncrypt scheme in the Isabelle/HOL system that can be used in further study around the functional and security analysis of NTRUEncrypt family.

  18. An Effective Fingerprint Verification Technique

    CERN Document Server

    Gogoi, Minakshi

    2010-01-01

    This paper presents an effective method for fingerprint verification based on a data mining technique called minutiae clustering and a graph-theoretic approach to analyze the process of fingerprint comparison to give a feature space representation of minutiae and to produce a lower bound on the number of detectably distinct fingerprints. The method also proving the invariance of each individual fingerprint by using both the topological behavior of the minutiae graph and also using a distance measure called Hausdorff distance.The method provides a graph based index generation mechanism of fingerprint biometric data. The self-organizing map neural network is also used for classifying the fingerprints.

  19. A verification environment for bigraphs

    DEFF Research Database (Denmark)

    Perrone, Gian David; Debois, Søren; Hildebrandt, Thomas

    2013-01-01

    We present the BigMC tool for bigraphical reactive systems that may be instantiated as a verification tool for any formalism or domain-specific modelling language encoded as a bigraphical reactive system. We introduce the syntax and use of BigMC, and exemplify its use with two small examples......: a textbook “philosophers” example, and an example motivated by a ubiquitous computing application. We give a tractable heuristic with which to approximate interference between reaction rules, and prove this analysis to be safe. We provide a mechanism for state reachability checking of bigraphical reactive...

  20. Functional verification of dynamically reconfigurable FPGA-based systems

    CERN Document Server

    Gong, Lingkan

    2015-01-01

    This book analyzes the challenges in verifying Dynamically Reconfigurable Systems (DRS) with respect to the user design and the physical implementation of such systems. The authors describe the use of a simulation-only layer to emulate the behavior of target FPGAs and accurately model the characteristic features of reconfiguration. Readers are enabled with this simulation-only layer to maintain verification productivity by abstracting away the physical details of the FPGA fabric.  Two implementations of the simulation-only layer are included: Extended ReChannel is a SystemC library that can be used to check DRS designs at a high level; ReSim is a library to support RTL simulation of a DRS reconfiguring both its logic and state. Through a number of case studies, the authors demonstrate how their approach integrates seamlessly with existing, mainstream DRS design flows and with well-established verification methodologies such as top-down modeling and coverage-driven verification. Provides researchers with an i...

  1. 液滴在固体表面流动特性的数值模拟及验证%Numerical simulation of fluid flowing on solid surface and Its experimental verification

    Institute of Scientific and Technical Information of China (English)

    张建林; 刘邱祖; 赖成; 李洪喜

    2016-01-01

    为了研究液滴在固体表面的流动特性,采用格子Boltzmann(LBM)分子动力学和水平集(LS)界面跟踪相结合的方法(LBM-LS)对液体在固体表面流动铺展过程进行数值模拟,用LBM求解液体运动的流场,LS捕捉运动的固液气界面.结果表明,模拟结果与实验测定结果一致,铺展接触角随时间呈指数变化规律,液体表面张力越小铺展接触角越小,证明采用LBM-LS模型模拟润湿性问题是可行的.%In order to clarify the flow characteristics of liquid on the surface,the fluid spreading process on solid surface was simulated numerically based on lattice Boltzmann molecular dynamics and level set interface tracking method.LBM was employed to solve the flow field of fluid motion,and the interface of solid-liquid-gas was captured by LS method.The obtained simulation results are in good agreement with the experimental measurement results.The spreading contact angle changes exponentially with time,and the contact angle reduces with the decreasing of fluid surface tension.It is certifiyed that LBM-LS model proves feasible to simulate the wetting problem.

  2. Verification of vertically rotating flume using non-newtonian fluids

    Science.gov (United States)

    Huizinga, R.J.

    1996-01-01

    Three tests on non-Newtonian fluids were used to verify the use of a vertically rotating flume (VRF) for the study of the rheological properties of debris flow. The VRF is described and a procedure for the analysis of results of tests made with the VRF is presented. The major advantages of the VRF are a flow field consistent with that found in nature, a large particle-diameter threshold, inexpensive operation, and verification using several different materials; the major limitations are a lack of temperature control and a certain error incurred from the use of the Bingham plastic model to describe a more complex phenomenon. Because the VRF has been verified with non-Newtonian fluids as well as Newtonian fluids, it can be used to measure the rheological properties of coarse-grained debris-flow materials.

  3. Cleanup Verification Package for the 126-F-1, 184-F Powerhouse Ash Pit

    Energy Technology Data Exchange (ETDEWEB)

    S. W. Clark and H. M. Sulloway

    2007-09-26

    This cleanup verification package documents completion of remedial action for the 126-F-1, 184-F Powerhouse Ash Pit. This waste site received coal ash from the 100-F Area coal-fired steam plant. Leakage of process effluent from the 116-F-14 , 107-F Retention Basins flowed south into the ash pit, contaminating the northern portion.

  4. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT: STORMWATER MANAGEMENT STORMFILTER® TREATMENT SYSTEM USING PERLITE MEDIA

    Science.gov (United States)

    Verification testing of the Stormwater Management, Inc. StormFilter® Using Perlite Filter Media was conducted on a 0.7 acre drainage basin near downtown Griffin, Georgia. The system consists of an inlet bay, flow spreader, cartridge bay, overflow baffle, and outlet bay, housed in...

  5. Verification of a Probabilistic Model for A Distribution System with Integration of Dispersed Generation

    DEFF Research Database (Denmark)

    Chen, Peiyuan; Chen, Zhe; Bak-Jensen, Birgitte;

    2008-01-01

    In order to assess the present and predict the future distribution system performance using a probabilistic model, verification of the model is crucial. This paper illustrates the error caused by using traditional Monte Carlo (MC) based probabilistic load flow (PLF) when involving tap...... obtained from the developed probabilistic model....

  6. Verification Support for Object Database Design

    NARCIS (Netherlands)

    Spelt, David

    1999-01-01

    In this thesis we have developed a verification theory and a tool for the automated analysis of assertions about object-oriented database schemas. The approach is inspired by the work of [SS89] in which a theorem prover is used to automate the verification of invariants for transactions on a relatio

  7. DATA VERIFICATION IN ISSUE SUPERVISING SYSTEMS

    Directory of Open Access Journals (Sweden)

    R. S. Katerinenko

    2013-01-01

    Full Text Available The paper proposes a method of data verification in issues tracking systems by means of production rules. This model makes it possible to formulate declaratively conditions that the information containment should comply with and apply reasoning procedures. Practical application of proposed verification system in a real software development project is described.

  8. On Verification Modelling of Embedded Systems

    NARCIS (Netherlands)

    Brinksma, Ed; Mader, Angelika

    2004-01-01

    Computer-aided verification of embedded systems hinges on the availability of good verification models of the systems at hand. Such models must be much simpler than full design models or specifications to be of practical value, because of the unavoidable combinatorial complexities in the verificatio

  9. Face verification for mobile personal devices

    NARCIS (Netherlands)

    Tao, Qian

    2009-01-01

    In this thesis, we presented a detailed study of the face verification problem on the mobile device, covering every component of the system. The study includes face detection, registration, normalization, and verification. Furthermore, the information fusion problem is studied to verify face sequenc

  10. A Correlation-Based Fingerprint Verification System

    NARCIS (Netherlands)

    Bazen, Asker M.; Verwaaijen, Gerben T.B.; Gerez, Sabih H.; Veelenturf, Leo P.J.; Zwaag, van der Berend Jan

    2000-01-01

    In this paper, a correlation-based fingerprint verification system is presented. Unlike the traditional minutiae-based systems, this system directly uses the richer gray-scale information of the fingerprints. The correlation-based fingerprint verification system first selects appropriate templates i

  11. A Model for Collaborative Runtime Verification

    NARCIS (Netherlands)

    Testerink, Bas; Bulling, Nils; Dastani, Mehdi

    2015-01-01

    Runtime verification concerns checking whether a system execution satisfies a given property. In this paper we propose a model for collaborative runtime verification where a network of local monitors collaborates in order to verify properties of the system. A local monitor has only a local view on

  12. A Model for Collaborative Runtime Verification

    NARCIS (Netherlands)

    Testerink, Bas; Bulling, Nils; Dastani, Mehdi

    2015-01-01

    Runtime verification concerns checking whether a system execution satisfies a given property. In this paper we propose a model for collaborative runtime verification where a network of local monitors collaborates in order to verify properties of the system. A local monitor has only a local view on t

  13. Verification and Performance Analysis for Embedded Systems

    DEFF Research Database (Denmark)

    Larsen, Kim Guldstrand

    2009-01-01

    This talk provides a thorough tutorial of the UPPAAL tool suite for, modeling, simulation, verification, optimal scheduling, synthesis, testing and performance analysis of embedded and real-time systems.......This talk provides a thorough tutorial of the UPPAAL tool suite for, modeling, simulation, verification, optimal scheduling, synthesis, testing and performance analysis of embedded and real-time systems....

  14. An Integrated Design and Verification Methodology for Reconfigurable Multimedia Systems

    CERN Document Server

    Borgatti, M; Rossi, U; Lambert, J -L; Moussa, I; Fummi, F; Pravadelli, G

    2011-01-01

    Recently a lot of multimedia applications are emerging on portable appliances. They require both the flexibility of upgradeable devices (traditionally software based) and a powerful computing engine (typically hardware). In this context, programmable HW and dynamic reconfiguration allow novel approaches to the migration of algorithms from SW to HW. Thus, in the frame of the Symbad project, we propose an industrial design flow for reconfigurable SoC's. The goal of Symbad consists of developing a system level design platform for hardware and software SoC systems including formal and semi-formal verification techniques.

  15. Code Verification of the HIGRAD Computational Fluid Dynamics Solver

    Energy Technology Data Exchange (ETDEWEB)

    Van Buren, Kendra L. [Los Alamos National Laboratory; Canfield, Jesse M. [Los Alamos National Laboratory; Hemez, Francois M. [Los Alamos National Laboratory; Sauer, Jeremy A. [Los Alamos National Laboratory

    2012-05-04

    The purpose of this report is to outline code and solution verification activities applied to HIGRAD, a Computational Fluid Dynamics (CFD) solver of the compressible Navier-Stokes equations developed at the Los Alamos National Laboratory, and used to simulate various phenomena such as the propagation of wildfires and atmospheric hydrodynamics. Code verification efforts, as described in this report, are an important first step to establish the credibility of numerical simulations. They provide evidence that the mathematical formulation is properly implemented without significant mistakes that would adversely impact the application of interest. Highly accurate analytical solutions are derived for four code verification test problems that exercise different aspects of the code. These test problems are referred to as: (i) the quiet start, (ii) the passive advection, (iii) the passive diffusion, and (iv) the piston-like problem. These problems are simulated using HIGRAD with different levels of mesh discretization and the numerical solutions are compared to their analytical counterparts. In addition, the rates of convergence are estimated to verify the numerical performance of the solver. The first three test problems produce numerical approximations as expected. The fourth test problem (piston-like) indicates the extent to which the code is able to simulate a 'mild' discontinuity, which is a condition that would typically be better handled by a Lagrangian formulation. The current investigation concludes that the numerical implementation of the solver performs as expected. The quality of solutions is sufficient to provide credible simulations of fluid flows around wind turbines. The main caveat associated to these findings is the low coverage provided by these four problems, and somewhat limited verification activities. A more comprehensive evaluation of HIGRAD may be beneficial for future studies.

  16. STAR-CCM+ Verification and Validation Plan

    Energy Technology Data Exchange (ETDEWEB)

    Pointer, William David [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2016-09-30

    The commercial Computational Fluid Dynamics (CFD) code STAR-CCM+ provides general purpose finite volume method solutions for fluid dynamics and energy transport. This document defines plans for verification and validation (V&V) of the base code and models implemented within the code by the Consortium for Advanced Simulation of Light water reactors (CASL). The software quality assurance activities described herein are port of the overall software life cycle defined in the CASL Software Quality Assurance (SQA) Plan [Sieger, 2015]. STAR-CCM+ serves as the principal foundation for development of an advanced predictive multi-phase boiling simulation capability within CASL. The CASL Thermal Hydraulics Methods (THM) team develops advanced closure models required to describe the subgrid-resolution behavior of secondary fluids or fluid phases in multiphase boiling flows within the Eulerian-Eulerian framework of the code. These include wall heat partitioning models that describe the formation of vapor on the surface and the forces the define bubble/droplet dynamic motion. The CASL models are implemented as user coding or field functions within the general framework of the code. This report defines procedures and requirements for V&V of the multi-phase CFD capability developed by CASL THM. Results of V&V evaluations will be documented in a separate STAR-CCM+ V&V assessment report. This report is expected to be a living document and will be updated as additional validation cases are identified and adopted as part of the CASL THM V&V suite.

  17. RISKIND verification and benchmark comparisons

    Energy Technology Data Exchange (ETDEWEB)

    Biwer, B.M.; Arnish, J.J.; Chen, S.Y.; Kamboj, S.

    1997-08-01

    This report presents verification calculations and benchmark comparisons for RISKIND, a computer code designed to estimate potential radiological consequences and health risks to individuals and the population from exposures associated with the transportation of spent nuclear fuel and other radioactive materials. Spreadsheet calculations were performed to verify the proper operation of the major options and calculational steps in RISKIND. The program is unique in that it combines a variety of well-established models into a comprehensive treatment for assessing risks from the transportation of radioactive materials. Benchmark comparisons with other validated codes that incorporate similar models were also performed. For instance, the external gamma and neutron dose rate curves for a shipping package estimated by RISKIND were compared with those estimated by using the RADTRAN 4 code and NUREG-0170 methodology. Atmospheric dispersion of released material and dose estimates from the GENII and CAP88-PC codes. Verification results have shown the program to be performing its intended function correctly. The benchmark results indicate that the predictions made by RISKIND are within acceptable limits when compared with predictions from similar existing models.

  18. Cognitive Bias in Systems Verification

    Science.gov (United States)

    Larson, Steve

    2012-01-01

    Working definition of cognitive bias: Patterns by which information is sought and interpreted that can lead to systematic errors in decisions. Cognitive bias is used in diverse fields: Economics, Politics, Intelligence, Marketing, to name a few. Attempts to ground cognitive science in physical characteristics of the cognitive apparatus exceed our knowledge. Studies based on correlations; strict cause and effect is difficult to pinpoint. Effects cited in the paper and discussed here have been replicated many times over, and appear sound. Many biases have been described, but it is still unclear whether they are all distinct. There may only be a handful of fundamental biases, which manifest in various ways. Bias can effect system verification in many ways . Overconfidence -> Questionable decisions to deploy. Availability -> Inability to conceive critical tests. Representativeness -> Overinterpretation of results. Positive Test Strategies -> Confirmation bias. Debiasing at individual level very difficult. The potential effect of bias on the verification process can be managed, but not eliminated. Worth considering at key points in the process.

  19. Cognitive Bias in Systems Verification

    Science.gov (United States)

    Larson, Steve

    2012-01-01

    Working definition of cognitive bias: Patterns by which information is sought and interpreted that can lead to systematic errors in decisions. Cognitive bias is used in diverse fields: Economics, Politics, Intelligence, Marketing, to name a few. Attempts to ground cognitive science in physical characteristics of the cognitive apparatus exceed our knowledge. Studies based on correlations; strict cause and effect is difficult to pinpoint. Effects cited in the paper and discussed here have been replicated many times over, and appear sound. Many biases have been described, but it is still unclear whether they are all distinct. There may only be a handful of fundamental biases, which manifest in various ways. Bias can effect system verification in many ways . Overconfidence -> Questionable decisions to deploy. Availability -> Inability to conceive critical tests. Representativeness -> Overinterpretation of results. Positive Test Strategies -> Confirmation bias. Debiasing at individual level very difficult. The potential effect of bias on the verification process can be managed, but not eliminated. Worth considering at key points in the process.

  20. Verification of model for heat and mass transfer process in cross flow heat-source tower%叉流热源塔传热传质模型的建立及实验验证

    Institute of Scientific and Technical Information of China (English)

    文先太; 梁彩华; 刘成兴; 张小松

    2012-01-01

    As a new heat and mass transfer device, heat-source tower plays an important role in the heat-source tower heat pump system. Heat is absorbed from the ambient in winter and supplied to the evaporator of heat pump. There are some similarities and differences in heat and mass transfer between heat-source tower and cooling tower. Six primary differences are pointed out as follows: heat resistance, physical property of liquid, ratio of latent heat percentage, flow rate of circular water/liquid, effect of liquid float on the whole system, and direction and rate of heat transfer. Based on the similarities and differences of heat-source tower and cooling tower, the mathematical model of heat and mass transfer in the cross heat-source tower is proposed and the model is confirmed by experiments. Results show that the latent heat percentage of cross flow heat-source tower is less than 35% and the error of heat transfer rate between simulation and experiment is less than 10%. The model is accurate enough to simulate the heat transfer characteristic in the heat-source tower.%热源塔作为新型的热质交换设备,在热源塔热泵机组运行过程中起着重要作用.其在冬季运行时从空气中吸收热量,为热泵机组提供低品位热量.热源塔与冷却塔在传热传质上存在一定异同点,指出了冷却塔与热源塔在传热传质上存在热阻、液体物性、潜热换热量比例、循环水/液体流量、飘液对系统的影响、热量传递方向和换热量大小等方面的差异.根据热源塔与冷却塔差异建立叉流热源塔传热传质数学模型,并采用实验验证模型的准确性.结果表明叉流热源塔潜热百分比低于35%,模型结果与实验结果相比换热性能误差低于10%,该模型能够较为精确地对叉流热源塔换热性能进行模拟.

  1. Barriers and Potential Solutions for Energy Renovation of Buildings in Denmark

    DEFF Research Database (Denmark)

    Meyer, Niels I; Mathiesen, Brian vad; Hvelplund, Frede

    2014-01-01

    Buildings account for a substantial part of the total energy consumption. In Denmark this number is about 40 % and this is approximately the same in most industrial countries. On this background there is an urgent need to develop strategies for reducing the energy demand in the building sector....... Renovation of existing buildings must have high priority as houses often last for 50 to 100 years, while the time perspective for the desired transformation to low-energy houses is less than 30 years in order to mitigate global warming and avoid irreversible tipping-points. The only sustainable energy supply...... in the perspective of centuries is renewable energy provided by the sun and exploited in the form of solar heat, solar electricity (PVs), wind power, hydro power, wave power, and some types of biomass etc. A future dominating role of intermittent renewable sources requires new integrated systems thinking on both...

  2. Experiment research of slag renovation in the corner-fired boiler

    Energy Technology Data Exchange (ETDEWEB)

    Gong, Zhijun; Wu, Wenfei [Inner Mongolia Univ. of Science and Technology, Baotou (China). School of Energy and Environment

    2013-07-01

    Aiming at serious slag on the water wall around the burner of corner-fired boiler with low-ash-fusion-point coal, cold experimental model has been established. In this experiment, particle image velocimetry (PIV) has been employed to accurately measure aerodynamic field of burner region, and the experimental research of furnace slag renovation has been conducted through changing the burner jet arrangement. The experiment results show that it has significantly effect on aerodynamic field in the furnace by changing burner jet deflection angle. A reasonable actual tangential circle diameter can be formed through adjusting the burner jet deflection angle, to prevent primary air attacking the wall, and further more, to effectively prevent serious slag on the water wall around the burner.

  3. Indoor air quality in a multifamily apartment building before and after energy renovation

    DEFF Research Database (Denmark)

    Bekö, Gabriel; Földváry, Veronika; Langer, Sarka

    2016-01-01

    Buildings are responsible for a substantial portion of global energy consumption. Most of the multifamily residential buildings in central Europe built in the 20th century do not satisfy the current requirements on energy efficiency. Nationwide remedial measures are taken to improve the energy...... efficiency of these buildings and reduce their energy consumption. Since the impact of these measures on the indoor air quality is rarely considered, they often compromise indoor air quality due to decreased ventilation and infiltration rate. We compared the indoor air quality in a multifamily apartment....... The occupants indicated more dissatisfaction and a higher prevalence of some sick building syndrome symptoms after renovation. When residential buildings in central Europe are upgraded to more energy efficient ones, the retrofitting effort should include improved ventilation in order to ensure sufficient air...

  4. Sustainable Renovation of Residential Buildings and the Landlord/Tenant Dilemma

    DEFF Research Database (Denmark)

    Ástmarsson, Björn; Jensen, Per Anker; Maslesa, Esmir

    2013-01-01

    be overcome with a package solution. In the Danish national context the package solution must consist of legislative changes, financial incentives and better dissemination of information. Therefore, an array of different tools must be integrated and used in cooperation to overcome the dilemma.......The landlord/tenant dilemma arises when the interests of landlords and tenants misalign and is one of the greatest barriers hindering the development of sustainable renovation of residential buildings in Europe. The aim of this research is to investigate how regulatory changes and contractual...... the landlord/tenant dilemma. The research was done in relation to the specific situation in Denmark, but theory, information and experiences from other countries were included. The results show that there are plenty of opportunities to overcome the landlord/tenant dilemma, but principal/agent problems can only...

  5. Energía renovable en Argentina: cambio de paradigma y oportunidades para su desarrollo

    OpenAIRE

    Pendón, Manuela Mercedes; Williams, Eduardo A.; Cibeira, Natalia; Couselo, Romina; Crespi, Gabriel; Tittonel, Marcelo

    2017-01-01

    A nivel mundial, las tecnologías de energía renovable para generación de electricidad han tenido un significativo progreso en los últimos años. Algunas tecnologías se han vuelto competitivas en costos con la generación convencional de energía. Sin embargo, en muchos casos, las políticas de apoyo son aun el principal motor de desarrollo. Tales políticas de apoyo son parte integrante de la política energética de un país o región. Toda política energética ha de ser soportada por tres pilares:...

  6. Development and application of some renovated technologies for municipal wastewater treatment in China

    Institute of Scientific and Technical Information of China (English)

    QIAN Yi; WEN Xianghua; HUANG Xia

    2007-01-01

    China has been experiencing fast economic development in recent decades at the cost of serious environmental deterioration.Wastewater discharge,especially municipal wastewater discharge,and non-point pollution sources are becoming the major water pollution source and research focus.Great efforts have been made on water pollution control and a number of renovated technologies and processes for municipal wastewater treatment and reclamation as well as non-point pollution control have been developed and applied in China.This paper discusses the development and application of the appropriate technologies,including natural treatment systems,anaerobic biological treatment,biofilm reactors and wastewater reclamation technologies,for water pollution control in the country.

  7. Identification of key parameters determining Danish homeowners' willingness and motivation for energy renovations

    DEFF Research Database (Denmark)

    Mortensen, Andrea; Heiselberg, Per Kvols; Knudstrup, Mary-Ann

    2016-01-01

    or if there are significant differences among the homeowners, what causes these differences and how does this affect the future motivation strategy. The key parameters for if and how the homeowner can be motivated are related to the homeowner’s position in life: age, children’s’ age, time of ownership, occupation and income......In Denmark and around Europe there is a problem of motivating homeowners to conduct energy renovation. A great energy saving potential is found in the Danish single-family houses erected 1960-79, but the potential has not been utilized for various reasons. However, studies have shown...... that the average Danish single-family house owner can be motivated by improvements in comfort, indoor environment and architecture combined with a reasonable economy. The objective of this paper is, based on the motivation survey results, to determine if all homeowners can be assumed as one homogeneous group...

  8. Thermal Renovation of Buildings with the Use of Straw - European Experience

    Science.gov (United States)

    Golański, Michał

    2016-12-01

    The selection of building materials to a huge extent shapes building impact on the environment. In the era of widespread awareness of health problems arising from toxicity of chemical substances, healthy and safe materials of organic origin are even more important. The work discusses examples of the use of straw-bales in thermal retrofitting of buildings located in Austria, Czech Republic and Hungary. The experience of the practical applications of this material in renovations of buildings located in similar climatic conditions indicate that these solutions can be used successfully in Poland. The prevalence of this technology can make a significant contribution to reduction of gaseous emissions, waste, as well as the emission of noise, vibration radiation.

  9. Thermal Renovation of Buildings with the Use of Straw - European Experience

    Directory of Open Access Journals (Sweden)

    Golański Michał

    2016-12-01

    Full Text Available The selection of building materials to a huge extent shapes building impact on the environment. In the era of widespread awareness of health problems arising from toxicity of chemical substances, healthy and safe materials of organic origin are even more important. The work discusses examples of the use of straw-bales in thermal retrofitting of buildings located in Austria, Czech Republic and Hungary. The experience of the practical applications of this material in renovations of buildings located in similar climatic conditions indicate that these solutions can be used successfully in Poland. The prevalence of this technology can make a significant contribution to reduction of gaseous emissions, waste, as well as the emission of noise, vibration radiation.

  10. Program of “Okayama Biomedical Engineering Professional” for Local Renovation

    Science.gov (United States)

    Hayashi, Kozaburo

    Okayama University of Science, Department of Biomedical Engineering, is promoting a program of “Okayama Biomedical Engineering Professional” for the development and renovation of biomedical industries in Okayama area. This is one of the programs of the national project on “Formation of the Center for the Production of Capable Persons for Local Renovation” , sponsored by the Ministry of Education, Culture, Sports, Science and Technology, Japan, and performed by the Japan Science and Technology Agency. The purpose of the program is to develop and educate specialists for the research, development, production, and marketing of biomedical devices and equipment in local industries in Okayama area. A half a year training for approximately 5 students from industries consists of 12 days of lectures and experiments, which is repeatedly provided for 5 years (approximately 45 students in total) .

  11. Renovated Korean nuclear safety and security system: A review and suggestions to successful settlement

    Energy Technology Data Exchange (ETDEWEB)

    Chung, W. S.; Yun, S. W.; Lee, D. S. [Korea Atomic Energy Research Inst., Dukjin-dong 150, Yusung-gu, Daejon, R.O., 305-353 (Korea, Republic of); Go, D. Y. [Kyung Hee Univ., Kyung Hee daero 26, Dongdaemoon-gu, Seoul, R.O., 130-701 (Korea, Republic of)

    2012-07-01

    Questions of whether past nuclear regulatory body of Korea is not a proper system to monitor and check the country's nuclear energy policy and utilization have been raised. Moreover, a feeling of insecurity regarding nuclear safety after the nuclear accident in Japan has spread across the public. This has stimulated a renovation of the nuclear safety regime in Korea. The Nuclear Safety and Security Commission (NSSC) was launched on October 26, 2011 as a regulatory body directly under the President in charge of strengthening independence and nuclear safety. This was a meaningful event as the NSSC it is a much more independent regulatory system for Korea. However, the NSSC itself does not guarantee an enhanced public acceptance of the nuclear policy and stable use nuclear energy. This study introduces the new NSSC system and its details in terms of organization structure, appropriateness of specialty, budget stability, and management system. (authors)

  12. Administración regional de los recursos naturales renovables. Corporaciones autónomas regionales

    Directory of Open Access Journals (Sweden)

    Hugues Manuel Lacouture Daníes

    2006-01-01

    Full Text Available En Colombia, los Recursos Naturales Renovables son propiedad de la Nación, y su administración corresponde en el nivel regional a las Autoridades Ambientales mediante acciones y procedimientos que van desde el otorgamiento de autorizaciones, concesiones, licencias y/o permisos hasta la imposición de sanciones por el incumplimiento de la normatividad ambiental. Este trabajo aporta herramientas para la comprensión del ejercicio misional de las Corporaciones Autónomas Regionales, a partir del licenciamiento ambiental, la concesión de aguas para su uso y aprovechamiento y el permiso de emisiones atmosféricas; así mismo, describe las funciones de control y seguimiento ambiental y el ejercicio de la facultad coercitiva de estas entidades

  13. Alternative Energy Saving Technology Analysis Report for Richland High School Renovation Project

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Bing

    2004-08-09

    On July 8, 2004, L&S Engineering, Inc. submitted a technical assistance request to Pacific Northwest National Laboratory (PNNL) to help estimate the potential energy savings and cost effectiveness of the solar energy and daylighting design alternatives for Richland High School Renovation Project in Richland, WA. L&S Engineering expected PNNL to evaluate the potential energy savings and energy cost savings, the probable installation costs, incentives or grants to reduce the installed costs and simple payback for the following alternative measures: (1) Daylighting in New Gym; (2) Solar Photovoltaics; (3) Solar Domestic Hot Water Pre-Heat; and (4) Solar Outside Air Pre-Heat Following are the findings of the energy savings and cost-effectiveness analysis of above alternative energy saving technologies.

  14. The effect of renovating an office building on occupants' comfort and health

    DEFF Research Database (Denmark)

    Pejtersen, Jan; Brohus, H.; Hyldgaard, C.E.

    1999-01-01

    An intervention study was performed in an office building in which there were severe indoor climate complaints among the occupants. In one part of the building a new heating and ventilation strategy was implemented by renovating the HVAC system, and a carpet floor material was replaced with a low......-emitting vinyl floor; the other part of the building was kept unchanged, serving as a control. A comprehensive indoor climate investigation, including a questionnaire study of the occupants' comfort and health, was performed before and after the intervention. The intervention was performed after detailed...... laboratory studies on alternative flooring materials and alternative ventilation strategies. The occupants' adverse perceptions and symptoms were significantly reduced by the intervention. The improvement of the indoor climate was most pronounced in the cellular offices, where both the floor material...

  15. Gobernanza global y evolución de las energías renovables en el sur. Objetivos políticos y estructuras de gobernanza

    Directory of Open Access Journals (Sweden)

    Wolfgang Hein

    2013-10-01

    Full Text Available El desarrollo de la gobernanza global de las energías renovables comparte similitudes y diferencias con otros sectores de la gobernanza global. La proliferación de organizaciones en el sector resalta el importante compromiso de varios actores con el fomento de energías renovables y, por otro lado, produce problemas de coordinación para alcanzar un efecto óptimo e influir sobre el avance de las energías renovables, particularmente en países en desarrollo.

  16. Barriers and Potential Solutions for Energy Renovation of Buildings in Denmark

    Directory of Open Access Journals (Sweden)

    Niels I. Meyer

    2014-02-01

    Full Text Available Buildings account for a substantial part of the total energy consumption. In Denmark this number is about 40 % and this is approximately the same in most industrial countries. On this background there is an urgent need to develop strategies for reducing the energy demand in the building sector. Renovation of existing buildings must have high priority as houses often last for 50 to 100 years, while the time perspective for the desired transformation to low-energy houses is less than 30 years in order to mitigate global warming and avoid irreversible tipping-points. The only sustainable energy supply in the perspective of centuries is renewable energy provided by the sun and exploited in the form of solar heat, solar electricity (PVs, wind power, hydropower, wave power, and some types of biomass etc. A future dominating role of intermittent renewable sources requires new integrated systems thinking on both the supply and demand side for heat, electricity and transport. Implementing such Smart Energy Systems requires integrated strategic energy planning on the national and local level. With the fundamental changes in the energy supply technologies expected during the coming years, it is important to synchronize investments in energy conservation measures with investments in the supply side, in order to avoid overinvestment in supply systems and thus to minimize the total costs of the transformation to Smart Energy Systems. This paper highlights some of the most important barriers for renovation of existing buildings in Denmark and points to policies for overcoming these barriers. Some of the policies have been presented in the reports of a recent Danish research project (CEESA

  17. Decreasing emission factor of pollutants in an oil refinery by renovating the furnace design

    Directory of Open Access Journals (Sweden)

    A. Zabihi

    2016-05-01

    Full Text Available The significant consumption of gas in the World results in the emission of greenhouse gases into atmosphere. Abadan refinery has always been the biggest and oldest oil refinery in the Middle East and has a variety of refined products. After six months of collecting data about pollutant concentration emitted from a stack of old furnaces of units 75 and new unit 200, the emission factor of the pollutant was calculated. The result showed that the emission factor of some hazardous pollutants emitted from old unit 75 was tremendously higher than that of unit 200. This study suggests the installation of a forced fan to provide the excess air and a feed temperature controlling system to control fuel gas consumption. These would make the fuel combustion complete and decrease its consumption. Meanwhile, further results showed that the renovation of unit 75 could lead to a significant annual reduction of some pollutants such as CO, H2S, and CxHx to 66 ton, 3 ton, and 800 kg, respectively; this would increase the emission rate of pollutant SO2 up to 150 ton annually. Finally, the new data of pollution coming from unit 75 were compared to pollution standard at American refineries. Results showed that the emission factor of most pollutants were below the American standard limits. However, the emission factor of sulfur dioxide emitted from upgraded furnace of unit 75 surpassed the American standard values. Fuel gas needs to be free of hydrogen sulfide in order to decrease SO2 emission in unit 75. It is predicted that the renovation of other 11 old furnaces belonging to Abadan refinery will result in significant decrease of pollutants CO, CxHx and H2S up to 320, 94 and 76 ton annually.

  18. Energy Efficiency and Universal Design in Home Renovations - A Comparative Review.

    Science.gov (United States)

    Kapedani, Ermal; Herssens, Jasmien; Verbeeck, Griet

    2016-01-01

    Policy and societal objectives indicate a large need for housing renovations that both accommodate lifelong living and significantly increase energy efficiency. However, these two areas of research are not yet examined in conjunction and this paper hypothesizes this as a missed opportunity to create better renovation concepts. The paper outlines a comparative review on research in Energy Efficiency and Universal Design in order to find the similarities and differences in both depth and breadth of knowledge. Scientific literature in the two fields reveals a disparate depth of knowledge in areas of theory, research approach, and degree of implementation in society. Universal Design and Energy Efficiency are part of a trajectory of expanding scope towards greater sustainability and, although social urgency has been a driver of the research intensity and approach in both fields, in energy efficiency there is an engineering, problem solving approach while Universal Design has a more sociological, user-focused one. These different approaches are reflected in the way home owners in Energy Efficiency research are viewed as consumers and decision makers whose drivers are studied, while Universal Design treats home owners as informants in the design process and studies their needs. There is an inherent difficulty in directly merging Universal Design and Energy Efficiency at a conceptual level because Energy Efficiency is understood as a set of measures, i.e. a product, while Universal Design is part of a (design) process. The conceptual difference is apparent in their implementation as well. Internationally energy efficiency in housing has been largely imposed through legislation, while legislation directly mandating Universal Design is either non-existent or it has an explicit focus on accessibility. However, Energy Efficiency and Universal Design can be complementary concepts and, even though it is more complex than expected, the combination offers possibilities to advance

  19. δ13C and δ18O isotopic composition of CaCO3 measured by continuous flow isotope ratio mass spectrometry: statistical evaluation and verification by application to Devils Hole core DH-11 calcite

    Science.gov (United States)

    Revesz, Kinga M.; Landwehr, Jurate M.

    2002-01-01

    A new method was developed to analyze the stable carbon and oxygen isotope ratios of small samples (400 ± 20 µg) of calcium carbonate. This new method streamlines the classical phosphoric acid/calcium carbonate (H3PO4/CaCO3) reaction method by making use of a recently available Thermoquest-Finnigan GasBench II preparation device and a Delta Plus XL continuous flow isotope ratio mass spectrometer. Conditions for which the H3PO4/CaCO3 reaction produced reproducible and accurate results with minimal error had to be determined. When the acid/carbonate reaction temperature was kept at 26 °C and the reaction time was between 24 and 54 h, the precision of the carbon and oxygen isotope ratios for pooled samples from three reference standard materials was ≤0.1 and ≤0.2 per mill or ‰, respectively, although later analysis showed that materials from one specific standard required reaction time between 34 and 54 h for δ18O to achieve this level of precision. Aliquot screening methods were shown to further minimize the total error. The accuracy and precision of the new method were analyzed and confirmed by statistical analysis. The utility of the method was verified by analyzing calcite from Devils Hole, Nevada, for which isotope-ratio values had previously been obtained by the classical method. Devils Hole core DH-11 recently had been re-cut and re-sampled, and isotope-ratio values were obtained using the new method. The results were comparable with those obtained by the classical method with correlation = +0.96 for both isotope ratios. The consistency of the isotopic results is such that an alignment offset could be identified in the re-sampled core material, and two cutting errors that occurred during re-sampling then were confirmed independently. This result indicates that the new method is a viable alternative to the classical reaction method. In particular, the new method requires less sample material permitting finer resolution and allows

  20. Bulk flow scaling for turbulent channel and pipe flows

    CERN Document Server

    Chen, Xi; She, Zhen-Su

    2016-01-01

    We report a theory deriving bulk flow scaling for canonical wall-bounded flows. The theory accounts for the symmetries of boundary geometry (flat plate channel versus circular pipe) by a variational calculation for a large-scale energy length, which characterizes its bulk flow scaling by a simple exponent, i.e. $m=4$ for channel and 5 for pipe. The predicted mean velocity shows excellent agreement with several dozen sets of quality empirical data for a wide range of the Reynolds number (Re), with a universal bulk flow constant $\\kappa\\approx0.45$. Predictions for dissipation and turbulent transport in the bulk flow are also given, awaiting data verification.

  1. Retail applications of signature verification

    Science.gov (United States)

    Zimmerman, Thomas G.; Russell, Gregory F.; Heilper, Andre; Smith, Barton A.; Hu, Jianying; Markman, Dmitry; Graham, Jon E.; Drews, Clemens

    2004-08-01

    The dramatic rise in identity theft, the ever pressing need to provide convenience in checkout services to attract and retain loyal customers, and the growing use of multi-function signature captures devices in the retail sector provides favorable conditions for the deployment of dynamic signature verification (DSV) in retail settings. We report on the development of a DSV system to meet the needs of the retail sector. We currently have a database of approximately 10,000 signatures collected from 600 subjects and forgers. Previous work at IBM on DSV has been merged and extended to achieve robust performance on pen position data available from commercial point of sale hardware, achieving equal error rates on skilled forgeries and authentic signatures of 1.5% to 4%.

  2. MFTF sensor verification computer program

    Energy Technology Data Exchange (ETDEWEB)

    Chow, H.K.

    1984-11-09

    The design, requirements document and implementation of the MFE Sensor Verification System were accomplished by the Measurement Engineering Section (MES), a group which provides instrumentation for the MFTF magnet diagnostics. The sensors, installed on and around the magnets and solenoids, housed in a vacuum chamber, will supply information about the temperature, strain, pressure, liquid helium level and magnet voltage to the facility operator for evaluation. As the sensors are installed, records must be maintained as to their initial resistance values. Also, as the work progresses, monthly checks will be made to insure continued sensor health. Finally, after the MFTF-B demonstration, yearly checks will be performed as well as checks of sensors as problem develops. The software to acquire and store the data was written by Harry Chow, Computations Department. The acquired data will be transferred to the MFE data base computer system.

  3. Formal Verification of UML Profil

    DEFF Research Database (Denmark)

    Bhutto, Arifa; Hussain, Dil Muhammad Akbar

    2011-01-01

    The Unified Modeling Language (UML) is based on the Model Driven Development (MDD) approach which capturing the system functionality using the platform-independent model (PMI) and appropriate domain-specific languages. In UML base system notations, structural view is model by the class, components...... and object diagrams and behavioral view model by the activity, use case, state, and sequence diagram. However, UML does not provide the formal syntax, therefore its semantics is not formally definable, so for assure of correctness, we need to incorporate semantic reasoning through verification, specification......, refinement, and incorporate into the development process. Our motivation of research is to make an easy structural view and suggest formal technique/ method which can be best applied or used for the UML based development system. We investigate the tools and methods, which broadly used for the formal...

  4. Source Code Verification for Embedded Systems using Prolog

    Directory of Open Access Journals (Sweden)

    Frank Flederer

    2017-01-01

    Full Text Available System relevant embedded software needs to be reliable and, therefore, well tested, especially for aerospace systems. A common technique to verify programs is the analysis of their abstract syntax tree (AST. Tree structures can be elegantly analyzed with the logic programming language Prolog. Moreover, Prolog offers further advantages for a thorough analysis: On the one hand, it natively provides versatile options to efficiently process tree or graph data structures. On the other hand, Prolog's non-determinism and backtracking eases tests of different variations of the program flow without big effort. A rule-based approach with Prolog allows to characterize the verification goals in a concise and declarative way. In this paper, we describe our approach to verify the source code of a flash file system with the help of Prolog. The flash file system is written in C++ and has been developed particularly for the use in satellites. We transform a given abstract syntax tree of C++ source code into Prolog facts and derive the call graph and the execution sequence (tree, which then are further tested against verification goals. The different program flow branching due to control structures is derived by backtracking as subtrees of the full execution sequence. Finally, these subtrees are verified in Prolog. We illustrate our approach with a case study, where we search for incorrect applications of semaphores in embedded software using the real-time operating system RODOS. We rely on computation tree logic (CTL and have designed an embedded domain specific language (DSL in Prolog to express the verification goals.

  5. 40 CFR 1065.325 - Intake-flow calibration.

    Science.gov (United States)

    2010-07-01

    ... CONTROLS ENGINE-TESTING PROCEDURES Calibrations and Verifications Flow-Related Measurements § 1065.325... recommend using a calibration subsonic venturi, ultrasonic flow meter or laminar flow element. We recommend... 40 Protection of Environment 32 2010-07-01 2010-07-01 false Intake-flow calibration....

  6. Approach for Estimating Exposures and Incremental Health Effects from Lead During Renovation, Repair, and Painting Activities in Public and Commercial Buildings

    Science.gov (United States)

    Approach for Estimating Exposures and Incremental Health Effects from Lead During Renovation, Repair, and Painting Activities in Public and Commercial Buildings” (Technical Approach Document). Also available for public review and comment are two supplementary documents: the detai...

  7. Approach for Estimating Exposures and Incremental Health Effects from Lead Due to Renovation Repair and Painting Activities in Public and Commercial Buildings

    Science.gov (United States)

    Approach for Estimating Exposures and Incremental Health Effects from Lead Due to Renovation Repair and Painting Activities in Public and Commercial Buildings: links to documents at www.regulations.gov, links to PDFs related to Approach document

  8. Delimitation and Classified Planning Management of Functional Renovation Zone: Experience of and Discussion on Shenzhen’s Practice of Urban Renewal

    Institute of Scientific and Technical Information of China (English)

    Hao; Wenxuan; Tong; De; Liu; Qing; Feng; Changchun

    2016-01-01

    Urban renewal is one of the important issues of urban development in China.Along with its development in the contemporary time,China has seen considerable achievements and problems as well in urban renewal.Taking into account that Shenzhen has carried out plenty of explorations on urban planning renewal,this paper takes it as an example to firstly analyze the plights of its urban renewal planning,the shortcomings of its urban renewal projects,and the advantages of functional renovation zones to manifest the necessity of the delimitation and classified planning management of functional renovation zone in urban renewal.It then summarizes the experience of its urban renewal unit planning in terms of the methods of zoning and implementation,and finally discusses the conceptual connotations of functional renovation zone,as well as the logic and characteristics of renovations of its delimitation and classified planning management,in hope of providing other Chinese cities with some references.

  9. RENOVE: an organization net for the third sector promoting the development of the renewable sources in Brazil; RENOVE: uma rede de organizacoes do terceiro setor promovendo o desenvolvimento das fontes renovaveis no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro, Claudio Moises; Souza, Aurelio Andrade de [Winrock International Brasil, Salvador, BA (Brazil)]. E-mail: cribeiro@winrock.org.br; Rosa, Fabio Luis de Oliveira [RENOVE - Rede Nacional das Organizacoes da Sociedade Civil para as Energias Renovaveis, Porto Alegre RS (Brazil). Secretaria Executiva]. E-mail: fabrosa@plug-in.com.br

    2002-07-01

    The National Network of Civil Society Organizations for Renewable Energy RENOVE was founded in Brazil on June 17th, 2000, to promote the use and application of renewable energy in production and integrated activities, especially in isolated rural areas, environmental protection areas and their surroundings. The network is formed of sixteen founding members. It promotes integration activities among the members, and is currently preparing to participate in the process of universalization of electricity services in Brazil. RENOVE is now implementing its Executive Secretary to optimize and carry out its actions. Cooperation between members has already lead to joint renewable energy application projects and training initiatives besides declarations in support of the development of a national renewable energy policy. (author)

  10. 37 CFR 260.5 - Verification of statements of account.

    Science.gov (United States)

    2010-07-01

    ... Verification of statements of account. (a) General. This section prescribes general rules pertaining to the... party requesting the verification procedure shall retain the report of the verification for a period of... independent auditor, shall serve as an acceptable verification procedure for all parties. (f) Costs of the...

  11. 37 CFR 382.6 - Verification of royalty payments.

    Science.gov (United States)

    2010-07-01

    ... payments. (a) General. This section prescribes general rules pertaining to the verification of the payment... requesting the verification procedure shall retain the report of the verification for a period of three years... independent auditor, shall serve as an acceptable verification procedure for all interested parties. (f) Costs...

  12. Arms control verification: The technologies that make it possible

    Energy Technology Data Exchange (ETDEWEB)

    Tsipis, K.; Hafemeister, D.W.; Janeway, P.

    1986-01-01

    This book presents papers on arms control verification. Topics considered include the politics of treaty verification and compliance, national security, remote sensing, image processing, image enhancement by digital computer, charge-coupled device image sensors, radar imaging, infrared surveillance, monitoring, seismological aspects, satellite verifications, seismic verification, and verifying a fissile material production freeze.

  13. On the verification of polynomial system solvers

    Institute of Scientific and Technical Information of China (English)

    Changbo CHEN; Marc MORENO MAZA; Wei PAN; Yuzhen XI

    2008-01-01

    We discuss the verification of mathematical software solving polynomial systems symbolically by way of triangular decomposition. Standard verification techniques are highly resource consuming and apply only to polynomial systems which are easy to solve. We exhibit a new approach which manipulates constructible sets represented by regular systems. We provide comparative benchmarks of different verification procedures applied to four solvers on a large set of well-known polynomial systems. Our experimental results illustrate the high effi-ciency of our new approach. In particular, we are able to verify triangular decompositions of polynomial systems which are not easy to solve.

  14. Liquefied Natural Gas (LNG) dispenser verification device

    Science.gov (United States)

    Xiong, Maotao; Yang, Jie-bin; Zhao, Pu-jun; Yu, Bo; Deng, Wan-quan

    2013-01-01

    The composition of working principle and calibration status of LNG (Liquefied Natural Gas) dispenser in China are introduced. According to the defect of weighing method in the calibration of LNG dispenser, LNG dispenser verification device has been researched. The verification device bases on the master meter method to verify LNG dispenser in the field. The experimental results of the device indicate it has steady performance, high accuracy level and flexible construction, and it reaches the international advanced level. Then LNG dispenser verification device will promote the development of LNG dispenser industry in China and to improve the technical level of LNG dispenser manufacture.

  15. Renovation of stirring system in 300m3 L-lysine fermentor%300m3赖氨酸发酵罐搅拌系统改造

    Institute of Scientific and Technical Information of China (English)

    王远海

    2012-01-01

    以加强传质混合为目的提出300m3赖氨酸发酵罐搅拌系统改造方案,采用计算流体力学(CFD)数值模拟方法分析了搅拌系统轴功率、流型、传质混合能力,成功指导了搅拌系统改造,在电流增大的情况下,平均单罐产量提高2.44t,平均糖酸转化率提高约1个百分点.%To strengthen mass transfer and mixing for purpose, the reform scheme of stirring system in 300m3 L-lysine fermentor was proposed, CFD (Computational Fluid Dynamics) numerical simulation was used in analysing shaft power, flow pattern, mass transfer mixing ability of the stirring system, when current increased, the fermentation yield and L-lysine acid conversion rate of sugar was 2.44t and about 1% higher than the fermentor which not renovated.

  16. 三级克劳斯工艺的应用及改造%Use of 3-Stage Claus Process and Renovation Situation

    Institute of Scientific and Technical Information of China (English)

    吴义琴

    2015-01-01

    The sulfur recovery process flow and operation conditions of the unit of conventional 3-stage Claus process are introduced,and the renovation before and after trial production,and revamp situation during first time heavy maintenance are described.The operation for more than 2 years suggests that the sulfur recovery unit can satisfy the demand of continuous production,and theφ(H2 S +SO2 )in exhaust emission can generally meet the design requirement of ≤0.6%.%介绍了普通三级克劳斯硫黄回收工艺流程及装置运行情况,阐述了试生产前期改造、试生产后的改造以及第1次大修时的改造情况。通过2年多的运行,该硫回收装置可满足连续生产的要求,排出的尾气中φ(H2 S +SO2)基本能够达到≤0.6%的设计要求。

  17. Flight testing vehicles for verification and validation of hypersonics technology

    Science.gov (United States)

    Sacher, Peter W.

    1995-03-01

    Hypersonics technology has obtained renewed interest since various concepts for future completely reusable Space Transportation Systems (STS) using airbreathing propulsion for the parts of atmospheric flight have been proposed in different countries (e.g. US, CIS, Japan, France, Germany, and UK). To cover major developments in those countries, AGARD FDP has formed the Working Group 18 on 'Hypersonic Experimental and Computational Capabilities - Improvement and Validation'. Of major importance for the proof of feasibility for all these concepts is the definition of an overall convincing philosophy for a 'hypersonics technology development and verification concept' using ground simulation facilities (both experimental and numerical) and flight testing vehicles. Flying at hypersonic Mach numbers using airbreathing propulsion requires highly sophisticated design tools to provide reliable prediction of thrust minus aerodynamic drag to accelerate the vehicle during ascent. Using these design tools, existing uncertainties have to be minimized by a carefully performed code validation process. To a large degree the database required for this validation cannot be obtained on ground. In addition thermal loads due to hypersonic flow have to be predicted accurately by aerothermodynamic flow codes to provide the inputs needed to decide on materials and structures. Heat management for hypersonic flight vehicles is one of the key-issues for any kind of successful flight demonstration. This paper identifies and discusses the role of flight testing during the verification and validation process of advanced hypersonic technology needed for flight in the atmosphere with hypersonic Mach numbers using airbreathing propulsion systems both for weapons and space transportation systems.

  18. ¿Quo Vadis energía renovable? El estado de la cuestión en España

    OpenAIRE

    2015-01-01

    El artículo muestra la situación de las energías renovables a nivel mundial, europeo y del Estado español, las fortalezas y debilidades de estas, y el revuelo que crea la nueva propuesta sobre el RD de autoconsumo y la posición del Estado español hacia las energías renovables.

  19. Análisis económico y financiero de las empresas cotizadas pertenecientes al sector de las energías renovables

    OpenAIRE

    Rodríguez Regueiro, Luis Manuel

    2012-01-01

    Situados en este contexto, el objetivo de este Trabajo Fin de Master es ofrecer una visión del sector de las energías renovables, mediante el estudio de sus características y su funcionamiento, y analizar la situación económica y financiera que presentan las empresas cotizadas pertenecientes al sector de las energías renovables.

  20. Instalación eléctrica de una vivienda unifamiliar aislada mediante suministro de energías renovables

    OpenAIRE

    LOZANO VALLADOLID, FERNANDO

    2015-01-01

    [ES] Instalación eléctrica con grado de electrificación elevada de una vivienda unifamiliar aislada mediante suministro de energías renovables (solar, eólica, geotérmicas). Lozano Valladolid, F. (2015). Instalación eléctrica de una vivienda unifamiliar aislada mediante suministro de energías renovables. http://hdl.handle.net/10251/58751. TFGM

  1. Análisis económico y financiero de las empresas cotizadas pertenecientes al sector de las energías renovables

    OpenAIRE

    Rodríguez Regueiro, Luis Manuel

    2012-01-01

    Situados en este contexto, el objetivo de este Trabajo Fin de Master es ofrecer una visión del sector de las energías renovables, mediante el estudio de sus características y su funcionamiento, y analizar la situación económica y financiera que presentan las empresas cotizadas pertenecientes al sector de las energías renovables.

  2. Instalación eléctrica de una vivienda unifamiliar aislada mediante suministro de energías renovables

    OpenAIRE

    LOZANO VALLADOLID, FERNANDO

    2015-01-01

    [ES] Instalación eléctrica con grado de electrificación elevada de una vivienda unifamiliar aislada mediante suministro de energías renovables (solar, eólica, geotérmicas). Lozano Valladolid, F. (2015). Instalación eléctrica de una vivienda unifamiliar aislada mediante suministro de energías renovables. http://hdl.handle.net/10251/58751. TFGM

  3. The Renovation and Recycle of Historic Building%历史建筑的改造及其再利用

    Institute of Scientific and Technical Information of China (English)

    莫伟

    2014-01-01

    China is aggressively carrying on the city const-ruction, but the renovation and recycle work of historic buil-ding is stil not in place. Protect the historic buildings and carries on the reasonable renovation and reuse have become a top priority. This article discusses the historical buildings ai-ming to use and play the value of these buildings.%我国正在大刀阔斧地进行城市建设,然而对历史建筑的改造及其再利用这一工作做的仍不到位。保护好历史建筑,对其进行合理改造及再利用,就成为了当务之急。本文对历史建筑的探讨,旨在利用并发挥这些建筑的价值。

  4. Analysis and Monitoring of Energy Consumption and Indoor Climate in a School Before and After Deep Energy Renovation

    DEFF Research Database (Denmark)

    Rose, Jørgen; Thomsen, Kirsten Engelund; Bergsøe, Niels Christian

    2015-01-01

    kindergartens/institutions -- that will undergo deep energy renovation over the next fewyears.The seven buildings are being energy-renovated and monitored with support from the European Union- CONCERTO initiative as part of the project titled Cost-Effective Low-Energy Advanced Sustainable Solutions -- Class1......Denmark is participating in the International Energy Agency -- Energy in Buildings and Communities (IEA-EBC) Annex 61, titled Development and Demonstration of Concepts for Deep Energy Retrofit in Government/Public Buildings. The purpose of IEA-EBC Annex 61 is to improve the decisionmaking process...... to achieve deep energy retrofits of government/ public buildings, starting with the determination of working bundles of technologies and corresponding business models using combined public and private funding. Denmark will contribute to the project with seven buildings in total -- two schools and five...

  5. Urban Village Renovation Planning from the Perspective of Human Settlements Theory:A Case Study on Wuhan

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    Based on the analysis on the characteristics of human settlement of urban villages in Wuhan,the paper examines the special urban social functions of urban villages during their self-evolution process.The totally market-led mode of urban village renovation has neglected existing positive social effects and failed to provide fair development opportunities for disadvantaged groups,and it will hinder the construction of a diversified and vigorous urban socio-ecological environment.In view of the situation,the paper suggests that in order to meet the urban socio-spatial demands during the specific period of social transition,measures should be adopted to re-examine and adjust the strategies and planning techniques concerning market-led urban village renovation with the improvement of sustainable human settlement as the goal.

  6. Renovating Charity Hospital or building a new hospital in post-Katrina New Orleans: economic rationale versus political will.

    Science.gov (United States)

    Leleu, Hervé; Moises, James; Valdmanis, Vivian Grace

    2013-02-01

    Since September 2005, Charity Hospital of New Orleans has been closed due to Hurricane Katrina. A debate following the closing arose about whether this public hospital should be renovated or a new medical center affiliated with the Louisiana State University should be built. Using academic literature, government statistics, and popular press reports, we describe the economic implications that support the view that Charity Hospital should have been renovated. We also address why this policy was not pursued by demonstrating the influence politics and individual stakeholders (specifically, Louisiana State University) had on the eventual policy pursued. In this commentary we also note the political identity movement away from public-sector provision of services to private-sector interests.

  7. Integración de energías renovables en redes eléctricas inteligentes

    OpenAIRE

    Gascó González, Manuel Vicente

    2013-01-01

    El presente documento conforma la tesis doctoral titulada "Integración de Energías Renovables en Redes Eléctricas Inteligentes". Impulsada por el auge en las energías renovables y las redes inteligentes, la tesis hace un recorrido a través de los sistemas de generación, acumulación y control del sistema eléctrico. Se modela una red distribuida, un sistema de generación fotovoltaico y un sistema de generación eólica y se realizan los estudios de integración estáticos y dinámicos para analizar ...

  8. Engineering drawing field verification program. Revision 3

    Energy Technology Data Exchange (ETDEWEB)

    Ulk, P.F.

    1994-10-12

    Safe, efficient operation of waste tank farm facilities is dependent in part upon the availability of accurate, up-to-date plant drawings. Accurate plant drawings are also required in support of facility upgrades and future engineering remediation projects. This supporting document establishes the procedure for performing a visual field verification of engineering drawings, the degree of visual observation being performed and documenting the results. A copy of the drawing attesting to the degree of visual observation will be paginated into the released Engineering Change Notice (ECN) documenting the field verification for future retrieval and reference. All waste tank farm essential and support drawings within the scope of this program will be converted from manual to computer aided drafting (CAD) drawings. A permanent reference to the field verification status will be placed along the right border of the CAD-converted drawing, referencing the revision level, at which the visual verification was performed and documented.

  9. MAMA Software Features: Quantification Verification Documentation-1

    Energy Technology Data Exchange (ETDEWEB)

    Ruggiero, Christy E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Porter, Reid B. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-05-21

    This document reviews the verification of the basic shape quantification attributes in the MAMA software against hand calculations in order to show that the calculations are implemented mathematically correctly and give the expected quantification results.

  10. Tackling Verification and Validation for Prognostics

    Data.gov (United States)

    National Aeronautics and Space Administration — Verification and validation (V&V) has been identified as a critical phase in fielding systems with Integrated Systems Health Management (ISHM) solutions to...

  11. Procedure Verification and Validation Toolset Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The proposed research is aimed at investigating a procedure verification and validation toolset, which will allow the engineers who are responsible for developing...

  12. Seismic design verification of LMFBR structures

    Energy Technology Data Exchange (ETDEWEB)

    1977-07-01

    The report provides an assessment of the seismic design verification procedures currently used for nuclear power plant structures, a comparison of dynamic test methods available, and conclusions and recommendations for future LMFB structures.

  13. Calibration and verification of environmental models

    Science.gov (United States)

    Lee, S. S.; Sengupta, S.; Weinberg, N.; Hiser, H.

    1976-01-01

    The problems of calibration and verification of mesoscale models used for investigating power plant discharges are considered. The value of remote sensors for data acquisition is discussed as well as an investigation of Biscayne Bay in southern Florida.

  14. MAMA Software Features: Quantification Verification Documentation-1

    Energy Technology Data Exchange (ETDEWEB)

    Ruggiero, Christy E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Porter, Reid B. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-05-21

    This document reviews the verification of the basic shape quantification attributes in the MAMA software against hand calculations in order to show that the calculations are implemented mathematically correctly and give the expected quantification results.

  15. Environmental Technology Verification Program (ETV) Policy Compendium

    Science.gov (United States)

    The Policy Compendium summarizes operational decisions made to date by participants in the U.S. Environmental Protection Agency's (EPA's) Environmental Technology Verification Program (ETV) to encourage consistency among the ETV centers. The policies contained herein evolved fro...

  16. ENVIRONMENTAL TECHNOLOGY VERIFICATION (ETV) PROGRAM: FUEL CELLS

    Science.gov (United States)

    The U.S. Environmental Protection Agency (EPA) Environmental Technology Verification (ETV) Program evaluates the performance of innovative air, water, pollution prevention and monitoring technologies that have the potential to improve human health and the environment. This techno...

  17. Standard Verification System Lite (SVS Lite)

    Data.gov (United States)

    Social Security Administration — SVS Lite is a mainframe program used exclusively by the Office of Child Support Enforcement (OCSE) to perform batch SSN verifications. This process is exactly the...

  18. Data Exchanges and Verifications Online (DEVO)

    Data.gov (United States)

    Social Security Administration — DEVO is the back-end application for processing SSN verifications and data exchanges. DEVO uses modern technology for parameter driven processing of both batch and...

  19. La regla de Hotelling para la gestión óptima de recursos naturales no renovables

    OpenAIRE

    González Cabezudo, Clara

    2015-01-01

    El problema de la escasez de los recursos naturales no renovables es importante debido a que estos recursos son una de las principales fuentes del crecimiento económico, por lo que su agotamiento podría afectar al mismo. Con la Regla de Hotelling se analiza la forma óptima de extracción de los recursos evitando el agotamiento de las reservas, y maximizando, además, los beneficios del propietario de dicho recurso.

  20. Renewable energy: Political momentum and technology for a sustainable Mexico; Energias Renovables: Impulso politico y tecnologico para un Mexico sustentable

    Energy Technology Data Exchange (ETDEWEB)

    Romero Hernandez, Sergio; Romero Hernandez, Omar; Wood, Duncan [Instituto Tecnologico Autonomo de Mexico (ITAM) (Mexico)

    2011-04-15

    The renewable energy sector in Mexico, as shown in this book, is alive and in good condition, prospers and has great potential. In this regard, it is essential that Mexico sees itself as a country with an energy future beyond Cantarell, beyond Pemex and beyond oil. The future of renewable energy offers great hope for the country and the region, and the time is right for a consensus government, business and social more strongly boost the development of this sector. This book discusses the following topics: Renewable energy and sustainable economic development, the regulatory framework for the use of renewable energy, hydropower, bioenergy, Part I: biomass and biogas, bioenergy, Part II: Liquid biofuels; elements for promotion of wind energy in Mexico, geothermal energy, solar PV, solar thermal and micro. [Spanish] El sector de la energia renovable en Mexico, como se muestra en este libro, esta vivo y en buenas condiciones, prospera y tiene gran potencial. En ese sentido, resulta indispensable que Mexico se vea a si mismo como un pais con un futuro energetico mas alla de Cantarell, mas alla de PEMEX, mas alla del petroleo. El futuro de la energia renovable ofrece una gran esperanza para el pais y la region, y el tiempo es adecuado para que una concertacion gubernamental, empresarial y social impulse con mas fuerza el desarrollo de este sector. En este libro se analizan los siguientes temas: Energias renovables y desarrollo economico sustentable; el marco normativo de la utilizacion de las energias renovables; energia hidroelectrica; bioenergia, parte I: biomasa y biogas; bioenergia, parte II: biocombustibles liquidos; elementos para la promocion de la energia eolica en Mexico; energia geotermica; energia solar fotovoltaica; energia solar termica, y la microgeneracion.

  1. La regla de Hotelling para la gestión óptima de recursos naturales no renovables

    OpenAIRE

    González Cabezudo, Clara

    2015-01-01

    El problema de la escasez de los recursos naturales no renovables es importante debido a que estos recursos son una de las principales fuentes del crecimiento económico, por lo que su agotamiento podría afectar al mismo. Con la Regla de Hotelling se analiza la forma óptima de extracción de los recursos evitando el agotamiento de las reservas, y maximizando, además, los beneficios del propietario de dicho recurso.

  2. Final Environmental Assessment: Military Family Housing Demolition, Construction, Renovation, and Leasing Program at Holloman AFB, New Mexico

    Science.gov (United States)

    2006-03-01

    thermic , having a mean annual temperature between 59 degrees Fahrenheit CF) and 72°F; the soil moisture regime is aridic (dry) (SCS 1980). Within...Nonfriable ACBMs, such as floor tiles, are considered to be nonhazardous, except during removal and/ or renovation, and are not subject to...containing ACBM include floor tile, adhesive, window caulk, and roofing material. AFI 32-1052, Facilities Asbestos Management, requires that when

  3. Cleared for Launch - Lessons Learned from the OSIRIS-REx System Requirements Verification Program

    Science.gov (United States)

    Stevens, Craig; Adams, Angela; Williams, Bradley; Goodloe, Colby

    2017-01-01

    Requirements verification of a large flight system is a challenge. It is especially challenging for engineers taking on their first role in space systems engineering. This paper describes our approach to verification of the Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) system requirements. It also captures lessons learned along the way from developing systems engineers embroiled in this process. We begin with an overview of the mission and science objectives as well as the project requirements verification program strategy. A description of the requirements flow down is presented including our implementation for managing the thousands of program and element level requirements and associated verification data. We discuss both successes and methods to improve the managing of this data across multiple organizational interfaces. Our approach to verifying system requirements at multiple levels of assembly is presented using examples from our work at instrument, spacecraft, and ground segment levels. We include a discussion of system end-to-end testing limitations and their impacts to the verification program. Finally, we describe lessons learned that are applicable to all emerging space systems engineers using our unique perspectives across multiple organizations of a large NASA program.

  4. Verification and Validation in Systems Engineering

    CERN Document Server

    Debbabi, Mourad; Jarraya, Yosr; Soeanu, Andrei; Alawneh, Luay

    2010-01-01

    "Verification and validation" represents an important process used for the quality assessment of engineered systems and their compliance with the requirements established at the beginning of or during the development cycle. Debbabi and his coauthors investigate methodologies and techniques that can be employed for the automatic verification and validation of systems engineering design models expressed in standardized modeling languages. Their presentation includes a bird's eye view of the most prominent modeling languages for software and systems engineering, namely the Unified Model

  5. Certifiable Specification and Verification of C Programs

    Science.gov (United States)

    Lüth, Christoph; Walter, Dennis

    A novel approach to the specification and verification of C programs through an annotation language that is a mixture between JML and the language of Isabelle/HOL is proposed. This yields three benefits: specifications are concise and close to the underlying mathematical model; existing Isabelle theories can be reused; and the leap of faith from specification language to encoding in a logic is small. This is of particular relevance for software certification, and verification in application areas such as robotics.

  6. Scalable hardware verification with symbolic simulation

    CERN Document Server

    Bertacco, Valeria

    2006-01-01

    An innovative presentation of the theory of disjoint support decomposition, presenting novel results and algorithms, plus original and up-to-date techniques in formal verificationProvides an overview of current verification techniques, and unveils the inner workings of symbolic simulationFocuses on new techniques that narrow the performance gap between the complexity of digital systems and the limited ability to verify themAddresses key topics in need of future research.

  7. Transmutation Fuel Performance Code Thermal Model Verification

    Energy Technology Data Exchange (ETDEWEB)

    Gregory K. Miller; Pavel G. Medvedev

    2007-09-01

    FRAPCON fuel performance code is being modified to be able to model performance of the nuclear fuels of interest to the Global Nuclear Energy Partnership (GNEP). The present report documents the effort for verification of the FRAPCON thermal model. It was found that, with minor modifications, FRAPCON thermal model temperature calculation agrees with that of the commercial software ABAQUS (Version 6.4-4). This report outlines the methodology of the verification, code input, and calculation results.

  8. An Assembler Driven Verification Methodology (ADVM)

    CERN Document Server

    Macbeth, John S; Gray, Ken

    2011-01-01

    This paper presents an overview of an assembler driven verification methodology (ADVM) that was created and implemented for a chip card project at Infineon Technologies AG. The primary advantage of this methodology is that it enables rapid porting of directed tests to new targets and derivatives, with only a minimum amount of code refactoring. As a consequence, considerable verification development time and effort was saved.

  9. GRIMHX verification and validation summary report

    Energy Technology Data Exchange (ETDEWEB)

    Crowe, R.D.; Toffer, H. [Westinghouse Hanford Co., Richland, WA (United States); Turmble, E.F. [Westinghouse Savannah River Co., Aiken, SC (United States)

    1991-12-01

    As part of the software quality assurance requirements, the reactor analyses codes used for the calculation of key reactor operating and safety parameters require formal verification and validation. The GRIMHX code is used in such applications; this document summarizes the past efforts in this area and combines them with recent new analyses performed by WSRC and Westinghouse Hanford Company (WHC). As such, this document is the most up-to-date compilation of verification and validation information pertaining to the GRIMHX code.

  10. Moving to Google Cloud: Renovation of Global Borehole Temperature Database for Climate Research

    Science.gov (United States)

    Xiong, Y.; Huang, S.

    2013-12-01

    Borehole temperature comprises an independent archive of information on climate change which is complementary to the instrumental and other proxy climate records. With support from the international geothermal community, a global database of borehole temperatures has been constructed for the specific purpose of the study on climate change. Although this database has become an important data source in climate research, there are certain limitations partially because the framework of the existing borehole temperature database was hand-coded some twenty years ago. A database renovation work is now underway to take the advantages of the contemporary online database technologies. The major intended improvements include 1) dynamically linking a borehole site to Google Earth to allow for inspection of site specific geographical information; 2) dynamically linking an original key reference of a given borehole site to Google Scholar to allow for a complete list of related publications; and 3) enabling site selection and data download based on country, coordinate range, and contributor. There appears to be a good match between the enhancement requirements for this database and the functionalities of the newly released Google Fusion Tables application. Google Fusion Tables is a cloud-based service for data management, integration, and visualization. This experimental application can consolidate related online resources such as Google Earth, Google Scholar, and Google Drive for sharing and enriching an online database. It is user friendly, allowing users to apply filters and to further explore the internet for additional information regarding the selected data. The users also have ways to map, to chart, and to calculate on the selected data, and to download just the subset needed. The figure below is a snapshot of the database currently under Google Fusion Tables renovation. We invite contribution and feedback from the geothermal and climate research community to make the

  11. Tourist Quarter “Chinese-Baroque” of Dao Way District in Harbin City: experience, problems and perspectives of renovation.

    Directory of Open Access Journals (Sweden)

    Levoshko Svetlana

    2016-01-01

    Full Text Available This article analyzes results of an unique experience of the Dao Wai historic district renovation project in Harbin of the 2010th. It includes an interpretation of the stylistic features of the Dao Wai building. Also, there was made a presumptive conclusion about the origins of the “Chinese Baroque”, which is now famous Dao Wai, combining European order architecture and far Eastern decorative tradition. Presumptive conclusion was based on the construction area observing in 2011-2016 and on the Chinese sources. As a result of renovation, there was formed a new public space with high tourism potential. Social value and status of the Dao Wai has significantly grown. The significant cost increase of real estate and provided services is an essential consequence of the gentrification method. There are were noted increased problems of the native people forced to move from the center to the outskirts of the city. Also, this article analyzes the current stage of the second phase design of Dao Wai renovation project and the perspectives for its implementation.

  12. Estimación del potencial de energías renovables en el estado de Sonora

    Directory of Open Access Journals (Sweden)

    Jorge Luis Taddei Bringas

    2016-06-01

    Full Text Available La etapa de uso de combustibles fósiles está llegando a su fin, debido principalmente a la escasez y problemas de contaminación que originan. En la actualidad existe una marcada tendencia en aprovechar las fuentes renovables de energía, por su bajo impacto ambiental y menor emisión de gases de efecto invernadero (GEI, lo cual contribuye a independizar las políticas energéticas locales de las del mercado global, basadas en la supremacía petrolera. Para obtener el mayor provecho de las energías renovables, es importante determinar el potencial de los distintos recursos energéticos existentes en una región. En este trabajo se presenta una relación del potencial para explotar energías renovables en el estado de Sonora, México, como un paso previo para establecer acciones y políticas que busquen su posible utilización a gran escala.

  13. Hot cell renovation in the spent fuel conditioning process facility at the Korea Atomic Energy Research Institute

    Energy Technology Data Exchange (ETDEWEB)

    Yu, Seung Nam; Lee, Jong Kwang; Park, Byung Suk; Cho, Il Je; Kim, Ki Ho [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2015-10-15

    The advanced spent fuel conditioning process facility (ACPF) of the irradiated materials examination facility (IMEF) at the Korea Atomic Energy Research Institute (KAERI) has been renovated to implement a lab scale electrolytic reduction process for pyroprocessing. The interior and exterior structures of the ACPF hot cell have been modified under the current renovation project for the experimentation of the electrolytic reduction process using spent nuclear fuel. The most important aspect of this renovation was the installation of the argon compartment within the hot cell. For the design and system implementation of the argon compartment system, a full-scale mock-up test and a three-dimensional (3D) simulation test were conducted in advance. The remodeling and repairing of the process cell (M8a), the maintenance cell (M8b), the isolation room, and their utilities were also planned through this simulation to accommodate the designed argon compartment system. Based on the considered refurbishment workflow, previous equipment in the M8 cell, including vessels and pipes, were removed and disposed of successfully after a zoning smear survey and decontamination, and new equipment with advanced functions and specifications were installed in the hot cell. Finally, the operating area and isolation room were also refurbished to meet the requirements of the improved hot cell facility.

  14. Verification and Validation of Kinetic Codes

    Science.gov (United States)

    Christlieb, Andrew

    2014-10-01

    We review the last three workshops held on Validation and Verification of Kinetic Codes. The goal of the workshops was to highlight the need to develop benchmark test problems beyond traditional test problems such as Landau damping and the two-stream instability. These test problems provide a limited understanding how a code might perform and mask key issues in more complicated situations. Developing these test problems highlights the strengths and weaknesses of both mesh- and particle-based codes. One outcome is that designing test problems that clearly deliver a path forward for developing improved methods is complicated by the need to create a completely self-consistent model. For example, two test cases proposed by the authors as simple test cases turn out to be ill defined. The first case is the modeling of sheath formation in a 1D 1V collisionless plasma. We found that losses to the wall lead to discontinuous distribution functions, a challenge for high order mesh-based solvers. The semi-infinite case was problematic because the far field boundary condition poses difficulty in computing on a finite domain. Our second case was flow of a collisionless electron beam in a pipe. Here, numerical diffusion is a key problem we are testing; however, two-stream instability at the beam edges introduces other issues in terms of finding convergent solutions. For mesh-based codes, before particle trapping takes place, mesh-based methods find themselves outside of the asymptotic regime. Another conclusion we draw from this exercise is that including collisional models in benchmark test problems for mesh-based plasma simulation tools is an important step in providing robust test problems for mesh-based kinetic solvers. In collaboration with Yaman Guclu, David Seal, and John Verboncoeur, Michigan State University.

  15. Verification and Examination Management of Complex Systems

    Directory of Open Access Journals (Sweden)

    Stian Ruud

    2014-10-01

    Full Text Available As ship systems become more complex, with an increasing number of safety-critical functions, many interconnected subsystems, tight integration to other systems, and a large amount of potential failure modes, several industry parties have identified the need for improved methods for managing the verification and examination efforts of such complex systems. Such needs are even more prominent now that the marine and offshore industries are targeting more activities and operations in the Arctic environment. In this paper, a set of requirements and a method for verification and examination management are proposed for allocating examination efforts to selected subsystems. The method is based on a definition of a verification risk function for a given system topology and given requirements. The marginal verification risks for the subsystems may then be evaluated, so that examination efforts for the subsystem can be allocated. Two cases of requirements and systems are used to demonstrate the proposed method. The method establishes a systematic relationship between the verification loss, the logic system topology, verification method performance, examination stop criterion, the required examination effort, and a proposed sequence of examinations to reach the examination stop criterion.

  16. PORFLOW TESTING AND VERIFICATION DOCUMENT

    Energy Technology Data Exchange (ETDEWEB)

    Aleman, S

    2007-06-18

    The PORFLOW software package is a comprehensive mathematical model for simulation of multi-phase fluid flow, heat transfer and mass transport in variably saturated porous and fractured media. PORFLOW can simulate transient or steady-state problems in Cartesian or cylindrical geometry. The porous medium may be anisotropic and heterogeneous and may contain discrete fractures or boreholes with the porous matrix. The theoretical models within the code provide a unified treatment of concepts relevant to fluid flow and transport. The main features of PORFLOW that are relevant to Performance Assessment modeling at the Savannah River National Laboratory (SRNL) include variably saturated flow and transport of parent and progeny radionuclides. This document involves testing a relevant sample of problems in PORFLOW and comparing the outcome of the simulations to analytical solutions or other commercial codes. The testing consists of the following four groups. Group 1: Groundwater Flow; Group 2: Contaminant Transport; Group 3: Numerical Dispersion; and Group 4: Keyword Commands.

  17. Lead exposure among workers renovating a previously deleaded bridge: comparison of trades, work tasks.

    Science.gov (United States)

    Johnson, J C; Reynolds, S J; Fuortes, L J; Clarke, W R

    2000-01-01

    Airborne and surface lead exposures were evaluated for construction trade groups at a previously deleaded bridge renovation site in the midwestern United States. Although all lead-based paint should have been removed, old layers of leaded paint were still present on some sections of the bridge. Ironworkers performing metal torch cutting had the highest exposures (188 microg/m3), followed by workers engaged in clean-up operations and paint removal (p contaminated with lead. Heavy equipment operators with low airborne lead exposure had the highest levels of surface contamination in personal vehicles (3,600 microg/m2). Laborers cleaning structural steel with compressed air and ironworkers exposed to lead fumes from cutting had the highest concentrations of lead dust on clothing (mean 4,766 microg/m2). Handwashing facilities were provided, but were infrequently used. No separate clothes changing facility was available at the site. The potential for "take-home" contamination was high, even though this site was thought to be relatively free of lead. Construction contractors and their workers need to be aware that previous deleading of a site may not preclude exposure to significant amounts of lead.

  18. Advantage of the renewable energies in isolated zones; Aprovechamiento de las energias renovables en zonas aisladas

    Energy Technology Data Exchange (ETDEWEB)

    Mendoza Zazueta, Jose Antonio [Fideicomiso de Riesgo Compartido de la SAGARPA (Mexico)

    2007-07-15

    The present article has as objective to present the experiences obtained for more than ten years, in the development and implementation of actions that in the matter of renewable energy have been orchestrated in the Mexican field by the Secretariat of Agriculture, Animal Industry, Rural Development, Fishing, and Nutrition, trough the Shared Risk Trust Fund. The activities began in 1994; the most common applications realized are the water pumping for the drinking trough of cattle and the automation of the irrigation in small surfaces with fruit trees, vegetables, forages and the operation of greenhouses. [Spanish] El presente articulo tiene como objetivo presentar las experiencias obtenidas durante mas de diez anos, en el desarrollo e implementacion de acciones que en materia de energia renovable se han instrumentado en el campo mexicano por la the Secretaria de Agricultura, Ganaderia, Desarrollo Rural Pesca y Alimentacion, a traves del Fideicomiso de Riesgo Compartido. Las actividades se iniciaron en 1994, las aplicaciones mas comunes realizadas son el bombeo de agua para el abrevadero de ganado y la tecnificacion del riego en pequenas superficies con frutales, hortalizas, forrajes y la operacion de invernaderos.

  19. Implicaciones medioambientales y socioeconómicas de las energías renovables

    Directory of Open Access Journals (Sweden)

    Carlos J. Pardo Abad

    2001-06-01

    Full Text Available El impacto de la energía sobre el medio ambiente es profundo y cada vez más complicado de resolver. Los problemas afectan a distintas escalas geográficas y demandan la participación más activa de las energías renovables. Los beneficios no sólo son medioambientales sino también económicos y sociales: reducción de emisiones contaminantes a la atmósfera, creación de empleo, impulso tecnológico, incremento de la competitividad industrial, modernización y desarrollo de recursos propios en áreas rurales, etc.The impact of energy on environment is deep and it is becoming more and more complicated to resolve. The problems affect several geographical scales and require a more active participation of renewable energies. Benefits are not only environmental, but also economic and social: reduction of pollutant emissions to atmosphere, creation of newjobs, technological boost, increase of the industrial competitiveness, modernization and development of own resources in country áreas, etc.

  20. [Dynamic morbidity of children as a evaluation criterion for renovation of aluminum manufacturing industries].

    Science.gov (United States)

    Gurvich, V B; Plotko, E G; Seliankina, K P; Nadeenko, V G; Ryzhov, V V; Saĭchenko, S P; Veprintsev, V V

    2004-01-01

    Negative pollution effects from atmospheric discharges by aluminium facilities exerted on population health can be traced by the parameters of the reproductive function in women, physical development of newborns, general and differential morbidity of children aged below one year as well as by anthropometric signs in birth, morbidity of children and adults, mortality, including due to oncology. The introduction of modern technologies including the preliminarily fire anode treatment and the use of highly effective methods of purification of industrial wastes cut the concentration (in atmospheric air) of anhydrous hydrogen fluoride and of solid fluorides as well as of aluminium to maximum permissible concentration; it also essentially reduced the content of benzapilene. A better atmospheric air observed yet in the course of renovation contributed to a lower morbidity of children, aged below one year, as well as to the prevalence of diseases affecting the eyes, respiratory and digestive organs, skin and subcutaneous cellular tissue; it also cuts the number of congenital anomalies versus the data obtained in a neighboring district.

  1. Renovating the Pyramid of Needs: Contemporary Extensions Built Upon Ancient Foundations

    Science.gov (United States)

    Kenrick, Douglas T.; Griskevicius, Vladas; Neuberg, Steven L.; Schaller, Mark

    2011-01-01

    Maslow’s pyramid of human needs, proposed in 1943, has been one of the most cognitively contagious ideas in the behavioral sciences. Anticipating later evolutionary views of human motivation and cognition, Maslow viewed human motives as based in innate and universal predispositions. We revisit the idea of a motivational hierarchy in light of theoretical developments at the interface of evolutionary biology, anthropology, and psychology. After considering motives at three different levels of analysis, we argue that the basic foundational structure of the pyramid is worth preserving, but that it should be buttressed with a few architectural extensions. By adding a contemporary design feature, connections between fundamental motives and immediate situational threats and opportunities should be highlighted. By incorporating a classical element, these connections can be strengthened by anchoring the hierarchy of human motives more firmly in the bedrock of modern evolutionary theory. We propose a renovated hierarchy of fundamental motives that serves as both an integrative framework and a generative foundation for future empirical research. PMID:21874133

  2. Possibilities of using welding-on technologies in crane wheel renovation

    Indian Academy of Sciences (India)

    J Viňáš; Ľ Kaščák

    2008-04-01

    The paper deals with analysis of welds-on quality of traverse crane wheels made from gr. 90–60 material, ASTM A148. Three types of welding-on technology with various filling materials were used. On wheel after wearing was welded-on one interlayer by a combination of additional materials, wire A 106 with F 11 addition and two cover layers made by a combination of A 508 wire with F 13 addition. Wheel surface was hardened after welding-on to a depth of 3 mm. A second welds-on technology was a combination of A 106 wire with F 11 addition. Two cover layers were made by a combination of RD 520 wire with F 56 addition. Third welds-on technology was realized to face one layer by C 113 wire in inert atmosphere: 80% Ar + 20% CO2. Two cover layers were made by wire with self protect Lincore 40-O. Properties of renovated traverse crane wheels were compared with the properties of new wheels with surface hardened layer. The welds-on were exposed to adhesive wearing where surface resistance was examined according to their weight loss. Influence of a particular element on the welds-on chemical composition was examined by EDX analyses.

  3. Thermal and Economic Analysis of Renovation Strategies for a Historic Building in Mediterranean Area

    Directory of Open Access Journals (Sweden)

    Simona Cirami

    2017-07-01

    Full Text Available Around 30% of the European building stock was built before 1950, when no regulations about energy efficiency were in force. Since only a small part of them has been renovated by now, the energy performance of this building stock is on average quite poor, resulting in a significant impact on the energy balance of European countries, as confirmed by data published by ISTAT (Italian National Statistical Institute. However, energy retrofit in historic edifices is a quite demanding issue as any intervention must take into account the need to preserve existing building materials and appearances while also allowing reversibility and low invasiveness. As an example, in these buildings it is not possible to apply an ETICS (External Thermal Insulation Composite System, since this would alter the historic and architectural value of the façade. On the other hand, internal insulation would have the drawback of reducing the net useful floor area, which also implies a loss of economic value. Moreover, internal insulation may induce overheating risks and mold formation. In this paper, all these issues are investigated with reference to an existing historic building located in southern Italy, showing that a retrofit strategy aimed at energy savings and cost-effectiveness is still possible if suitable materials and solutions are adopted.

  4. Rehabilitation centers in change: participatory methods for managing redesign and renovation.

    Science.gov (United States)

    Lahtinen, Marjaana; Nenonen, Suvi; Rasila, Heidi; Lehtelä, Jouni; Ruohomäki, Virpi; Reijula, Kari

    2014-01-01

    The aim of this article is to describe a set of participatory methods that we have either developed or modified for developing future work and service environments to better suit renewable rehabilitation processes. We discuss the methods in a larger framework of change process model and participatory design. Rehabilitation organizations are currently in transition; customer groups, financing, services, and the processes of rehabilitation centers are changing. The pressure for change challenges the centers to develop both their processes and facilities. There is a need for methods that support change management. Four participatory methods were developed: future workshop, change survey, multi-method assessment tool, and participatory design generator cards. They were tested and evaluated in three rehabilitation centers at the different phases of their change process. The developed methods were considered useful in creating a mutual understanding of the change goals between different stakeholders, providing a good picture of the work community's attitudes toward the change, forming an integrated overview of the built and perceived environment, inspiring new solutions, and supporting the management in steering the change process. The change process model described in this article serves as a practical framework that combined the viewpoints of organizational and facility development. However, participatory design continues to face challenges concerning communication between different stakeholders, and further development of the methods and processes is still needed. Intervention studies could provide data on the success factors that enhance the transformations in the rehabilitation sector. Design process, methodology, organizational transformation, planning, renovation.

  5. Tenant guidelines for energy-efficient renovation of buildings at the Presidio of San Francisco

    Energy Technology Data Exchange (ETDEWEB)

    Warner, J.L.; Sartor, D.; Diamond, R.

    1997-06-01

    These Guidelines are intended to help current and future tenants of the Presidio work with designers and contractors to incorporate energy efficiency and sustainable practices into the renovations of the buildings. This guide is designed to complement the detailed Guidelines for Rehabilitating Buildings at the Presidio of San Francisco, available from the National Park Service. Energy efficiency yields benefits far beyond energy savings. Daylighting and efficient electric lighting, natural ventilation and cooling, and other conservation strategies improve tenant health, comfort, and productivity, while preserving the historical heritage of Presidio buildings. This guide examines the use of energy and resources and opportunities for efficiency in Presidio buildings on the basis of individual components and systems. The authors begin with recommended and discouraged practices for roofs, walls, and foundations, then move to windows and other opening. Next they address efficiency issues in building interiors--lighting, office equipment, and spacing planning. The authors follow with recommendations for mechanical and plumbing systems and conclude with insights on miscellaneous outdoor energy and resource concerns. A concise listing of sources of more detailed information is provided at the end of the document. The authors expect this guide to help tenants begin the process of using energy-efficient and sustainable practices throughout the Presidio of San Francisco.

  6. Comparison and development of sustainable office façade renovation solutions in the Netherlands

    Directory of Open Access Journals (Sweden)

    Michiel Ritzen

    2013-12-01

    Full Text Available Environmental, commercial and societal developments in the Netherlands stimulate the environmental improvement of the existing office building stock. In the Netherlands, about 15% of all office area was vacant in 2012, and the majority of offices have a relative poor energy performance. To measure the improvement, different assessment tools are applied. These tools either focus on one aspect, such as operation energy, and result in a specific outcome such as MJ/m2, or these tools combine different aspects, such as energy and materials, through a weighted system and result in a generic outcome, such as ‘excellent’.In this research, the relation between assessment outcome and actual environmental impact is investigated of both types of tools, by reflecting the outcome of the tool to the carrying capacity of a system. The relation is investigated through a comparison of the energy and material aspect of three office façade renovation solutions using four different assessment tools. Using a tool in which energy and material impact is related to the carrying capacity, current energy focused optimization might lead to a sub optimization of actual environmental impact. To illustrate this, a calculated façade solution is presented with minimal environmental impact based on carrying capacity.

  7. In vitro isolation and cultivation of human chondrocytes for osteoarthritis renovation.

    Science.gov (United States)

    Xu, Jiaming; Zhang, Changqing

    2014-08-01

    The purpose of this study was to evaluate the repair effects of chondrocytes that were cultured in vitro on osteoarthritis (OA). Chondrocytes were isolated from fetal rabbits and cultured in Biosilon microcarriers. Sixty rabbits were randomly divided into three groups equally (blank group, model group, treatment group). The rabbit knee OA model was established by inducing papain. Rabbits in the treatment group were injected with the chondrocytes that were cultured in vitro. Hematoxylin-eosin (HE) staining and gross morphologic observation were conducted. Expression level of cytokines such as IL-1bβ, IL-6, and TNF-α in cartilage synovial cells was also analyzed by an ELISA assay. The cultured chondrocyte was validated by a positive stain of type II collagen and vimentin by immunofluorescence. Compared to the model group, the articular cartilage of the rabbit knee in the treatment group showed a normal color, smooth surface, and none of malacia and coloboma. HE staining indicated that the articular surface of the treatment group tended to be smooth and flat; the matrix stained tinge and the cartilage destruction and fiber hyperplasia of the synovia were lightened. The expression levels of IL-1bβ, IL-6, and TNF-α also declined in the treatment group. OA symptoms were improved by treating with chondrocytes. In summary, the animal experiment in the present study indicated that chondrocyte injection played an active effect on renovation of OA.

  8. A Reflection on Low Energy Renovation of Residential Complexes in Southern Europe

    Directory of Open Access Journals (Sweden)

    Helena Corvacho

    2016-09-01

    Full Text Available The transformation of European existing building stock towards very low energy buildings requires a new approach. In this context, it seems reasonable to think that buildings should no longer be renovated individually but as part of a global energy system. Focusing on larger urban units may present some scale advantages and may constitute an opportunity to change the urban environment in a smart energy way. Specificities of Southern European countries are addressed. Due either to the climate or the life style, there are large differences in energy consumption per dwelling among southern and northern European countries. How much heating energy will be saved by over-insulating building envelopes if people do not feel the need to heat their houses in the first place? In addition, real energy use in buildings frequently shows major differences with respect to the predicted consumption. The definition of realistic solutions demands the availability of realistic predictions. A case of a residential complex in Portugal is used to illustrate the main questions and to conclude that moving from a building to a group of buildings scale may be an interesting challenge for policy makers to look closer in the near future.

  9. Renovating the Pyramid of Needs: Contemporary Extensions Built Upon Ancient Foundations.

    Science.gov (United States)

    Kenrick, Douglas T; Griskevicius, Vladas; Neuberg, Steven L; Schaller, Mark

    2010-05-01

    Maslow's pyramid of human needs, proposed in 1943, has been one of the most cognitively contagious ideas in the behavioral sciences. Anticipating later evolutionary views of human motivation and cognition, Maslow viewed human motives as based in innate and universal predispositions. We revisit the idea of a motivational hierarchy in light of theoretical developments at the interface of evolutionary biology, anthropology, and psychology. After considering motives at three different levels of analysis, we argue that the basic foundational structure of the pyramid is worth preserving, but that it should be buttressed with a few architectural extensions. By adding a contemporary design feature, connections between fundamental motives and immediate situational threats and opportunities should be highlighted. By incorporating a classical element, these connections can be strengthened by anchoring the hierarchy of human motives more firmly in the bedrock of modern evolutionary theory. We propose a renovated hierarchy of fundamental motives that serves as both an integrative framework and a generative foundation for future empirical research.

  10. Verification of Wegelin's design criteria for horizontal flow roughing ...

    African Journals Online (AJOL)

    2006-01-01

    Jan 1, 2006 ... sible alternative filter media, namely broken burnt bricks and charcoal maize cobs. ... it is one of the most commonly used roughing filter media and also ..... Unreached: Challenges for the 21st Century. New Delhi, India 271-.

  11. Verification of Advective Bar Elements Implemented in the Aria Thermal Response Code.

    Energy Technology Data Exchange (ETDEWEB)

    Mills, Brantley [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2016-01-01

    A verification effort was undertaken to evaluate the implementation of the new advective bar capability in the Aria thermal response code. Several approaches to the verification process were taken : a mesh refinement study to demonstrate solution convergence in the fluid and the solid, visually examining the mapping of the advective bar element nodes to the surrounding surfaces, and a comparison of solutions produced using the advective bars for simple geometries with solutions from commercial CFD software . The mesh refinement study has shown solution convergence for simple pipe flow in both temperature and velocity . Guidelines were provided to achieve appropriate meshes between the advective bar elements and the surrounding volume. Simulations of pipe flow using advective bars elements in Aria have been compared to simulations using the commercial CFD software ANSYS Fluent (r) and provided comparable solutions in temperature and velocity supporting proper implementation of the new capability. Verification of Advective Bar Elements iv Acknowledgements A special thanks goes to Dean Dobranich for his guidance and expertise through all stages of this effort . His advice and feedback was instrumental to its completion. Thanks also goes to Sam Subia and Tolu Okusanya for helping to plan many of the verification activities performed in this document. Thank you to Sam, Justin Lamb and Victor Brunini for their assistance in resolving issues encountered with running the advective bar element model. Finally, thanks goes to Dean, Sam, and Adam Hetzler for reviewing the document and providing very valuable comments.

  12. Monitoring and verification R&D

    Energy Technology Data Exchange (ETDEWEB)

    Pilat, Joseph F [Los Alamos National Laboratory; Budlong - Sylvester, Kory W [Los Alamos National Laboratory; Fearey, Bryan L [Los Alamos National Laboratory

    2011-01-01

    The 2010 Nuclear Posture Review (NPR) report outlined the Administration's approach to promoting the agenda put forward by President Obama in Prague on April 5, 2009. The NPR calls for a national monitoring and verification R&D program to meet future challenges arising from the Administration's nonproliferation, arms control and disarmament agenda. Verification of a follow-on to New START could have to address warheads and possibly components along with delivery capabilities. Deeper cuts and disarmament would need to address all of these elements along with nuclear weapon testing, nuclear material and weapon production facilities, virtual capabilities from old weapon and existing energy programs and undeclared capabilities. We only know how to address some elements of these challenges today, and the requirements may be more rigorous in the context of deeper cuts as well as disarmament. Moreover, there is a critical need for multiple options to sensitive problems and to address other challenges. There will be other verification challenges in a world of deeper cuts and disarmament, some of which we are already facing. At some point, if the reductions process is progressing, uncertainties about past nuclear materials and weapons production will have to be addressed. IAEA safeguards will need to continue to evolve to meet current and future challenges, and to take advantage of new technologies and approaches. Transparency/verification of nuclear and dual-use exports will also have to be addressed, and there will be a need to make nonproliferation measures more watertight and transparent. In this context, and recognizing we will face all of these challenges even if disarmament is not achieved, this paper will explore possible agreements and arrangements; verification challenges; gaps in monitoring and verification technologies and approaches; and the R&D required to address these gaps and other monitoring and verification challenges.

  13. Confirmation of non-classical laws in nonequilibrium gases and application of conservation laws to verification of DSMC

    Science.gov (United States)

    Myong, R. S.; Park, J. H.

    2012-11-01

    The constitutive laws, which describe the material's inherent properties, play a special role in the study of materials such as gases. In this study, the validity of non-classical constitutive laws in rarefied and micro gases is first considered. In particular, non-Navier and non-Fourier laws in algebraic forms identified in the velocity shear gas flows are investigated using DSMC. In addition, a new method based on the conservation laws is applied to the Couette flow and shock structure problems for the verification study of the DSMC. It is shown that, in flow problems involving with the wall boundary condition, the pressure among various properties is the most critical quantity in the verification and validation study of rarefied and micro gases. Such observation may imply the need of further theoretical and experimental investigation on the whole pressure and temperature flowfields beyond a reduced quantity such as the mass flow rate in the Poiseuille gas flows.

  14. VARTM Model Development and Verification

    Science.gov (United States)

    Cano, Roberto J. (Technical Monitor); Dowling, Norman E.

    2004-01-01

    In this investigation, a comprehensive Vacuum Assisted Resin Transfer Molding (VARTM) process simulation model was developed and verified. The model incorporates resin flow through the preform, compaction and relaxation of the preform, and viscosity and cure kinetics of the resin. The computer model can be used to analyze the resin flow details, track the thickness change of the preform, predict the total infiltration time and final fiber volume fraction of the parts, and determine whether the resin could completely infiltrate and uniformly wet out the preform.

  15. A proposal for the modular integration of the renewable energy sources, via hydrogen, and the Rankine power cycle; Una propuesta de integracion modular de las fuentes de energia renovables, via hidrogeno, y el ciclo de potencia Rankine

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez Dirzo, Rafael

    2004-07-01

    This thesis synthesizes the state-of-the-art of the modular integration of the renewable energy sources and the Ranking power cycle. This is possible to obtain due to the development of the hydrogen production technologies and with it the chemical storage of the energies solar, Aeolian (wind) and tidal, among others. The purpose of this thesis is the assessment of hydrogen as fuel, its obtaining through the breaking of the water molecule using the renewable energies and the thermodynamic analysis of two prototypes for its energy conversion into electricity and power, voltage and fixed frequency: the first one at laboratory scale of 800 W and the second one, on industrial scale of 1 GW of power. Included here is the synthesis of the increasing bibliography on the development of the hydrogen technologies and the renewable energies, passing through the mass and energy balance in the power cycles until proposing, at the level of Process Flow Charts of the results of the proposed prototypes. The products show the possibility of constructing and operating the experimental prototype, whereas the thermodynamic analysis suggests that the industrial prototype is viable. The economic analysis of both proposals is part of a doctorate project in process. [Spanish] Esta tesis sintetiza el estado del arte de la integracion modular de las fuentes de energia renovables y el ciclo de potencia Ranking. Esto es posible lograrlo debido al desarrollo de las tecnologias de produccion de hidrogeno y con ello el almacenamiento quimico de las energias solar, eolica y maremotriz, entre otras. Es objetivo de esta tesis la valoracion del hidrogeno como combustible, su obtencion a traves del rompimiento de la molecula del agua utilizando las energias renovables y el analisis termodinamico de dos prototipo para su conversion energetica en electricidad a potencia, voltaje y frecuencia fijos: el primero a escala de laboratorio de 800 W y el segundo, a escala industrial de 1 GW de potencia. Se

  16. Image-based fingerprint verification system using LabVIEW

    Directory of Open Access Journals (Sweden)

    Sunil K. Singla

    2008-09-01

    Full Text Available Biometric-based identification/verification systems provide a solution to the security concerns in the modern world where machine is replacing human in every aspect of life. Fingerprints, because of their uniqueness, are the most widely used and highly accepted biometrics. Fingerprint biometric systems are either minutiae-based or pattern learning (image based. The minutiae-based algorithm depends upon the local discontinuities in the ridge flow pattern and are used when template size is important while image-based matching algorithm uses both the micro and macro feature of a fingerprint and is used if fast response is required. In the present paper an image-based fingerprint verification system is discussed. The proposed method uses a learning phase, which is not present in conventional image-based systems. The learning phase uses pseudo random sub-sampling, which reduces the number of comparisons needed in the matching stage. This system has been developed using LabVIEW (Laboratory Virtual Instrument Engineering Workbench toolbox version 6i. The availability of datalog files in LabVIEW makes it one of the most promising candidates for its usage as a database. Datalog files can access and manipulate data and complex data structures quickly and easily. It makes writing and reading much faster. After extensive experimentation involving a large number of samples and different learning sizes, high accuracy with learning image size of 100 100 and a threshold value of 700 (1000 being the perfect match has been achieved.

  17. Comparing formal verification approaches of interlocking systems

    DEFF Research Database (Denmark)

    Haxthausen, Anne Elisabeth; Nguyen, Hoang Nga; Roggenbach, Markus

    2016-01-01

    The verification of railway interlocking systems is a challenging task, and therefore several research groups have suggested to improve this task by using formal methods, but they use different modelling and verification approaches. To advance this research, there is a need to compare these appro......The verification of railway interlocking systems is a challenging task, and therefore several research groups have suggested to improve this task by using formal methods, but they use different modelling and verification approaches. To advance this research, there is a need to compare...... these approaches. As a first step towards this, in this paper we suggest a way to compare different formal approaches for verifying designs of route-based interlocking systems and we demonstrate it on modelling and verification approaches developed within the research groups at DTU/Bremen and at Surrey....../Swansea. The focus is on designs that are specified by so-called control tables. The paper can serve as a starting point for further comparative studies. The DTU/Bremen research has been funded by the RobustRailS project granted by Innovation Fund Denmark. The Surrey/Swansea research has been funded by the Safe...

  18. VERIFICATION OF PARALLEL AUTOMATA-BASED PROGRAMS

    Directory of Open Access Journals (Sweden)

    M. A. Lukin

    2014-01-01

    Full Text Available The paper deals with an interactive method of automatic verification for parallel automata-based programs. The hierarchical state machines can be implemented in different threads and can interact with each other. Verification is done by means of Spin tool and includes automatic Promela model construction, conversion of LTL-formula to Spin format and counterexamples in terms of automata. Interactive verification gives the possibility to decrease verification time and increase the maximum size of verifiable programs. Considered method supports verification of the parallel system for hierarchical automata that interact with each other through messages and shared variables. The feature of automaton model is that each state machine is considered as a new data type and can have an arbitrary bounded number of instances. Each state machine in the system can run a different state machine in a new thread or have nested state machine. This method was implemented in the developed Stater tool. Stater shows correct operation for all test cases.

  19. ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT FOR THE UV DISINFECTION OF SECONDARY EFFLUENTS, SUNTEC, INC. MODEL LPX200 DISINFECTION SYSTEM - 03/09/WQPC-SWP

    Science.gov (United States)

    Verification testing of the SUNTEC LPX200 UV Disinfection System to develop the UV delivered dose flow relationship was conducted at the Parsippany-Troy Hills wastewater treatment plant test site in Parsippany, New Jersey. Two lamp modules were mounted parallel in a 6.5-meter lon...

  20. Ciphertext verification security of symmetric encryption schemes

    Institute of Scientific and Technical Information of China (English)

    HU ZhenYu; SUN FuChun; JIANG JianChun

    2009-01-01

    This paper formally discusses the security problem caused by the ciphertext verification,presenting a new security notion named IND-CVA (indistinguishability under ciphertext verification attacks) to chap acterize the privacy of encryption schemes in this situation.Allowing the adversary to access to both encryption oracle and ciphertext verification oracle,the new notion IND-CVA is slightly stronger than IND-CPA (indistinguishability under chosen-plaintext attacks) but much weaker than IND-CCA (indistinguishability under chosen-ciphertext attacks),and can be satisfied by most of the popular symmetric encryption schemes such as OTP (one-time-pad),CBC (cipher block chaining) and CTR (counter).An MAC (message authentication scheme) is usually combined with an encryption to guarantee secure communication (e.g.SSH,SSL and IPSec).However,with the notion of IND-CVA,this paper shows that a secure MAC can spoil the privacy in some cases.