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Sample records for asme code case

  1. 75 FR 24323 - American Society of Mechanical Engineers (ASME) Codes and New and Revised ASME Code Cases

    Science.gov (United States)

    2010-05-04

    .... Mark Padovan, Office of Nuclear Reactor Regulation, U.S. Nuclear Regulatory Commission, Washington, DC... Code, Section XI f. ASME OM Code g. Reactor Coolant Pressure Boundary, Quality Group B Components, and... nuclear power plant components; and the ASME OM Code, which contains requirements for inservice...

  2. 77 FR 3073 - American Society of Mechanical Engineers (ASME) Codes and New and Revised ASME Code Cases...

    Science.gov (United States)

    2012-01-23

    ... ASME Boiler and Pressure Vessel Code, the ASME Code for Operation and Maintenance of Nuclear Power... 3073-3075] [FR Doc No: 2012-1212] NUCLEAR REGULATORY COMMISSION 10 CFR Part 50 [NRC-2008-0554] RIN 3150... the codified text in a final rule that was published in the Federal Register on June 21, 2011 (76...

  3. Code cases for implementing risk-based inservice testing in the ASME OM code

    Energy Technology Data Exchange (ETDEWEB)

    Rowley, C.W.

    1996-12-01

    Historically inservice testing has been reasonably effective, but quite costly. Recent applications of plant PRAs to the scope of the IST program have demonstrated that of the 30 pumps and 500 valves in the typical plant IST program, less than half of the pumps and ten percent of the valves are risk significant. The way the ASME plans to tackle this overly-conservative scope for IST components is to use the PRA and plant expert panels to create a two tier IST component categorization scheme. The PRA provides the quantitative risk information and the plant expert panel blends the quantitative and deterministic information to place the IST component into one of two categories: More Safety Significant Component (MSSC) or Less Safety Significant Component (LSSC). With all the pumps and valves in the IST program placed in MSSC or LSSC categories, two different testing strategies will be applied. The testing strategies will be unique for the type of component, such as centrifugal pump, positive displacement pump, MOV, AOV, SOV, SRV, PORV, HOV, CV, and MV. A series of OM Code Cases are being developed to capture this process for a plant to use. One Code Case will be for Component Importance Ranking. The remaining Code Cases will develop the MSSC and LSSC testing strategy for type of component. These Code Cases are planned for publication in early 1997. Later, after some industry application of the Code Cases, the alternative Code Case requirements will gravitate to the ASME OM Code as appendices.

  4. Materials and design bases issues in ASME Code Case N-47

    International Nuclear Information System (INIS)

    A preliminary evaluation of the design bases (principally ASME Code Case N-47) was conducted for design and operation of reactors at elevated temperatures where the time-dependent effects of creep, creep-fatigue, and creep ratcheting are significant. Areas where Code rules or regulatory guides may be lacking or inadequate to ensure the operation over the expected life cycles for the next-generation advanced high-temperature reactor systems, with designs to be certified by the US Nuclear Regulatory Commission, have been identified as unresolved issues. Twenty-two unresolved issues were identified and brief scoping plans developed for resolving these issues

  5. Relation between deformation behavior and wall thinning evaluation of Asme code case N-597 for pipes

    Energy Technology Data Exchange (ETDEWEB)

    Hasegawa, K. [Power and Industrial Systems, Nuclear System Div., Hitachi, Ltd., Hitachi-shi (Japan); Katsumasa, Miyazaki [Mechanical Engineering Research Lab. Hitachi, Ltd., Hitachi-shi (Japan); Seok-Hwan, Ahn [Pukyong National University, School of Mechanical Engineering, Busan (Korea, Republic of); Kotoji, Ando [Yokohama National University, Faculty of Engineering, Yokohama (Japan)

    2001-07-01

    In accordance with the pipe wall thinning evaluation of the ASME Code Case N-597, piping items for Class 1, 2 and 3 containing local wall thinning are accepted for continued service, when predicted remaining pipe wall thickness tp are greater than 87.5% of tnom, where tnom is the nominal pipe wall thickness. Piping items for Class 2 and 3 are also accepted for continued service, when pipe wall thickness tp are greater than 90% of tmin, where tmin is the minimum pipe wall thickness required for design pressure. When pipe wall thickness tp are less than 20 to 30% of tnom, the piping items are not accepted to continue operation for Class 1, 2 and 3 piping. From the monotonic bending tests of full-scale carbon steel pipes, deformation and fracture behaviors of locally thinned pipe were manifested. This paper indicates the physical meaning of these criteria of wall thickness of Code Case N-597 from the experimental data of the pipe tests. (author)

  6. ASME Code Efforts Supporting HTGRs

    Energy Technology Data Exchange (ETDEWEB)

    D.K. Morton

    2012-09-01

    In 1999, an international collaborative initiative for the development of advanced (Generation IV) reactors was started. The idea behind this effort was to bring nuclear energy closer to the needs of sustainability, to increase proliferation resistance, and to support concepts able to produce energy (both electricity and process heat) at competitive costs. The U.S. Department of Energy has supported this effort by pursuing the development of the Next Generation Nuclear Plant, a high temperature gas-cooled reactor. This support has included research and development of pertinent data, initial regulatory discussions, and engineering support of various codes and standards development. This report discusses the various applicable American Society of Mechanical Engineers (ASME) codes and standards that are being developed to support these high temperature gascooled reactors during construction and operation. ASME is aggressively pursuing these codes and standards to support an international effort to build the next generation of advanced reactors so that all can benefit.

  7. ASME Code Efforts Supporting HTGRs

    Energy Technology Data Exchange (ETDEWEB)

    D.K. Morton

    2011-09-01

    In 1999, an international collaborative initiative for the development of advanced (Generation IV) reactors was started. The idea behind this effort was to bring nuclear energy closer to the needs of sustainability, to increase proliferation resistance, and to support concepts able to produce energy (both electricity and process heat) at competitive costs. The U.S. Department of Energy has supported this effort by pursuing the development of the Next Generation Nuclear Plant, a high temperature gas-cooled reactor. This support has included research and development of pertinent data, initial regulatory discussions, and engineering support of various codes and standards development. This report discusses the various applicable American Society of Mechanical Engineers (ASME) codes and standards that are being developed to support these high temperature gascooled reactors during construction and operation. ASME is aggressively pursuing these codes and standards to support an international effort to build the next generation of advanced reactors so that all can benefit.

  8. ASME Code Efforts Supporting HTGRs

    Energy Technology Data Exchange (ETDEWEB)

    D.K. Morton

    2010-09-01

    In 1999, an international collaborative initiative for the development of advanced (Generation IV) reactors was started. The idea behind this effort was to bring nuclear energy closer to the needs of sustainability, to increase proliferation resistance, and to support concepts able to produce energy (both electricity and process heat) at competitive costs. The U.S. Department of Energy has supported this effort by pursuing the development of the Next Generation Nuclear Plant, a high temperature gas-cooled reactor. This support has included research and development of pertinent data, initial regulatory discussions, and engineering support of various codes and standards development. This report discusses the various applicable American Society of Mechanical Engineers (ASME) codes and standards that are being developed to support these high temperature gascooled reactors during construction and operation. ASME is aggressively pursuing these codes and standards to support an international effort to build the next generation of advanced reactors so that all can benefit.

  9. Draft ASME code case on ductile cast iron for transport packaging

    Energy Technology Data Exchange (ETDEWEB)

    Saegusa, T. [Central Research Inst. of Electric Power Industry, Abiko (Japan); Arai, T. [Central Research Inst. of Electric Power Industry, Yokosuka (Japan); Hirose, M. [Nuclear Fuel Transport Co., Ltd., Tokyo (Japan); Kobayashi, T. [Nippon Chuzo, Kawasaki (Japan); Tezuka, Y. [Mitsubishi Materials Co., Tokyo (Japan); Urabe, N. [Kokan Keisoku K. K., Kawasaki (Japan); Hueggenberg, R. [GNB, Essen (Germany)

    2004-07-01

    The current Rules for Construction of ''Containment Systems for Storage and Transport Packagings of Spent Nuclear Fuel and High Level Radioactive Material and Waste'' of Division 3 in Section III of ASME Code (2001 Edition) does not include ductile cast iron in its list of materials permitted for use. The Rules specify required fracture toughness values of ferritic steel material for nominal wall thickness 5/8 to 12 inches (16 to 305 mm). New rule for ductile cast iron for transport packaging of which wall thickness is greater than 12 inches (305mm) is required.

  10. Globalization of ASME Nuclear Codes and Standards

    International Nuclear Information System (INIS)

    With the globalization of the nuclear industry, it is clear that the reactor suppliers are based in many countries around the world (such as United States, France, Japan, Canada, South Korea, South Africa) and they will be marketing their reactors to many countries around the world (such as US, China, South Korea, France, Canada, Finland, Taiwan). They will also be fabricating their components in many different countries around the world. With this situation, it is clear that the requirements of ASME Nuclear Codes and Standards need to be adjusted to accommodate the regulations, fabricating processes, and technology of various countries around the world. It is also very important for the American Society of Mechanical Engineers (ASME) to be able to assure that products meeting the applicable ASME Code requirements will provide the same level of safety and quality assurance as those products currently fabricated under the ASME accreditation process. To do this, many countries are in the process of establishing or changing their regulations, and it is important for ASME to interface with the appropriate organizations in those countries, in order to ensure there is effective use of ASME Codes and standards around the world. (authors)

  11. Optimized periodic verification testing blended risk and performance-based MOV inservice test program an application of ASME code case OMN-1

    Energy Technology Data Exchange (ETDEWEB)

    Sellers, C.; Fleming, K.; Bidwell, D.; Forbes, P. [and others

    1996-12-01

    This paper presents an application of ASME Code Case OMN-1 to the GL 89-10 Program at the South Texas Project Electric Generating Station (STPEGS). Code Case OMN-1 provides guidance for a performance-based MOV inservice test program that can be used for periodic verification testing and allows consideration of risk insights. Blended probabilistic and deterministic evaluation techniques were used to establish inservice test strategies including both test methods and test frequency. Described in the paper are the methods and criteria for establishing MOV safety significance based on the STPEGS probabilistic safety assessment, deterministic considerations of MOV performance characteristics and performance margins, the expert panel evaluation process, and the development of inservice test strategies. Test strategies include a mix of dynamic and static testing as well as MOV exercising.

  12. The environment and ASME performance test codes

    International Nuclear Information System (INIS)

    Today, federal, state and local governmental agencies have enacted comprehensive legislation on power generation emission limits which affects all aspects of the energy sector. This paper reviews the indirect impact of Performance Test Codes on environmental testing, reviewing past, current, and future practices. Existing codes and three new codes currently under development will be cited along with possible future code development

  13. The environment and ASME performance test codes

    Energy Technology Data Exchange (ETDEWEB)

    Bannister, R.L. [Westinghouse Electric Corp., Orlando, FL (United States); Macak, J.J. III [Mostardi-Platt Associates, Inc., Elmhurst, IL (United States); Newby, R.A. [Westinghouse Science and Technology Center, Pittsburgh, PA (United States)

    1995-12-31

    Today, federal, state and local governmental agencies have enacted comprehensive legislation on power generation emission limits which affects all aspects of the energy sector. This paper reviews the indirect impact of Performance Test Codes on environmental testing, reviewing past, current, and future practices. Existing codes and three new codes currently under development will be cited along with possible future code development.

  14. Operating nuclear plant feedback to ASME and French codes

    International Nuclear Information System (INIS)

    The French have an advantage in nuclear plant operating experience feedback due to the highly centralized nature of their nuclear industry. There is only one utility in charge of design as well as operations (EDF) and only one reactor vendor (Framatome). The ASME Code has played a key role in resolving technical issues in the design and operation of nuclear plants since the inception of nuclear power. The committee structure of the Code brings an ideal combination of senior technical people with both broad and specialized experience to bear on complex how safe is safe enough technical issues. The authors now see an even greater role for the ASME Code in a proposed new regulatory era for the US nuclear industry. The current legalistic confrontational regulatory era has been quite destructive. There now appears to be a real opportunity to begin a new era of technical consensus as the primary means for resolving safety issues. This change can quickly be brought about by having the industry take operating plant problems and regulatory technical issues directly to the ASME Code for timely resolution. Surprisingly, there is no institution in the US nuclear industry with such a mandate. In fact, the industry is organized to feedback through the Nuclear Regulatory Commission issues which could be far better resolved through the ASME Code. Major regulatory benefits can be achieved by closing this loop and providing systematic interaction with the ASME Code. The essential elements of a new regulatory era and ideas for organizing US institutional industry responsibilities, taken from the French experience, are described in this paper

  15. FEM evaluation for integrity on damaged stud female threads with pressure vessel according to ASME code

    International Nuclear Information System (INIS)

    It should be evaluated and compared by ASME code criterion for integrity evaluation of stud bolts on nuclear power plant. According to the results, the procedure of code case-496 has to be applied to damaged female threads for maintenance. It is following to manufacture recommendation criterion for female threads which is damaged over 10% on thermal power plant until now generally. For ASME code of nuclear power plant, it has been done analysis by condition of imaginary damaged female threads of the stud 'until three threads(10%)' using FEM under the same model and condition. From analysis results, we found that it need repair when damaged female threads is over 10% same as recommendation. It was also re-confirmed to safety for Heli Coil method using FEM. The final purpose is to predict and ensure integrity for male · female threads after Heli Coil maintenance according to ASME code

  16. Analysis of the Current Technical Issues on ASME Code and Standard for Nuclear Mechanical Design(2009)

    International Nuclear Information System (INIS)

    This report describes the analysis on the current revision movement related to the mechanical design issues of the U.S ASME nuclear code and standard. ASME nuclear mechanical design in this report is composed of the nuclear material, primary system, secondary system and high temperature reactor. This report includes the countermeasures based on the ASME Code meeting for current issues of each major field. KAMC(ASME Mirror Committee) of this project is willing to reflect a standpoint of the domestic nuclear industry on ASME nuclear mechanical design and play a technical bridge role for the domestic nuclear industry in ASME Codes application

  17. ASME code ductile failure criteria for impulsively loaded pressure vessels

    Energy Technology Data Exchange (ETDEWEB)

    Nickell, Robert E.; Duffey, T. A. (Thomas A.); Rodriguez, E. A. (Edward A.)

    2003-01-01

    Ductile failure criteria suitable for application to impulsively loaded high pressure vessels that are designed to the rules of the ASME Code Section VI11 Division 3 are described and justified. The criteria are based upon prevention of load instability and the associated global failure mechanisms, and on protection against progressive distortion for multiple-use vessels. The criteria are demonstrated by the design and analysis of vessels that contain high explosive charges.

  18. Integrity evaluation for stud female threads on pressure vessel according to ASME code using FEM

    International Nuclear Information System (INIS)

    The extension of design life among power plants is increasingly becoming a world-wide trend. Kori no.1 unit in Korea is operating two cycle. It has two man-ways for tube inspection in a steam generator which is one of the important components in a nuclear power plant. Especially, stud bolts for man-way cover have damaged by disassembly and assembly several times and degradation for bolt materials for long term operation. It should be evaluated and compared by ASME code criteria for integrity evaluation. Integrity evaluation criteria which has been made by the manufacturer is not applied on the stud bolts of nuclear pressure vessels directly because it is controlled by the yield stress of ASME code. It can apply evaluation criteria through FEM analysis to damaged female threads and to evaluated safety for helical-coil method which is used according to code case-N-496-1. From analysis results, we found that it is the same results between stress intensity which got from FEM analysis on damaged female threads over 10% by manufacture integrity criteria and 2/3 yield strength criteria on ASME code. It was also confirmed that the helical-coil repair method would be safe

  19. ASME code and ratcheting in piping components. Final technical report

    International Nuclear Information System (INIS)

    The main objective of this research is to develop an analysis program which can accurately simulate ratcheting in piping components subjected to seismic or other cyclic loads. Ratcheting is defined as the accumulation of deformation in structures and materials with cycles. This phenomenon has been demonstrated to cause failure to piping components (known as ratcheting-fatigue failure) and is yet to be understood clearly. The design and analysis methods in the ASME Boiler and Pressure Vessel Code for ratcheting of piping components are not well accepted by the practicing engineering community. This research project attempts to understand the ratcheting-fatigue failure mechanisms and improve analysis methods for ratcheting predictions. In the first step a state-of-the-art testing facility is developed for quasi-static cyclic and seismic testing of straight and elbow piping components. A systematic testing program to study ratcheting is developed. Some tests have already been performed and the rest will be completed by summer'99. Significant progress has been made in the area of constitutive modeling. A number of sophisticated constitutive models have been evaluated in terms of their simulations for a broad class of ratcheting responses. From the knowledge gained from this evaluation study two improved models are developed. These models are demonstrated to have promise in simulating ratcheting responses in piping components. Hence, implementation of these improved models in widely used finite element programs, ANSYS and/or ABAQUS, is in progress. Upon achieving improved finite element programs for simulation of ratcheting, the ASME Code provisions for ratcheting of piping components will be reviewed and more rational methods will be suggested. Also, simplified analysis methods will be developed for operability studies of piping components and systems. Some of the future works will be performed under the auspices of the Center for Nuclear Power Plant Structures

  20. Computer Program of SIE ASME-NH (Revision 1.0) Code

    International Nuclear Information System (INIS)

    In this report, the SIE ASME (Structural Integrity Evaluations by ASME-NH) (Revision 1.0), which has a computerized implementation of ASME Pressure Vessels and Piping Code Section III Subsection NH rules, is developed to apply to the next generation reactor design subjecting to the elevated temperature operations over 500 .deg. C and over 30 years design lifetime, and the user's manual for this program is described in detail

  1. Significant issues and changes for ANSI/ASME OM-1 1981, part 1, ASME OMc code-1994, and ASME OM Code-1995, Appendix I, inservice testing of pressure relief devices in light water reactor power plants

    Energy Technology Data Exchange (ETDEWEB)

    Seniuk, P.J.

    1996-12-01

    This paper identifies significant changes to the ANSI/ASME OM-1 1981, Part 1, and ASME Omc Code-1994 and ASME OM Code-1995, Appendix I, {open_quotes}Inservice Testing of Pressure Relief Devices in Light-Water Reactor Power Plants{close_quotes}. The paper describes changes to different Code editions and presents insights into the direction of the code committee and selected topics to be considered by the ASME O&M Working Group on pressure relief devices. These topics include scope issues, thermal relief valve issues, as-found and as-left set-pressure determinations, exclusions from testing, and cold setpoint bench testing. The purpose of this paper is to describe some significant issues being addressed by the O&M Working Group on Pressure Relief Devices (OM-1). The writer is currently the chair of OM-1 and the statements expressed herein represents his personal opinion.

  2. NRC needs and their implementation-ASME Section IX code

    International Nuclear Information System (INIS)

    The guiding principle from the onset of government regulation for the peaceful use of nuclear energy has been to prescribe only the minimum requirements that are needed for safety. In the pioneer regulators' collective mind, the technical details could be left to the regulated industry through its agents like NSSS vendors and A/E's and their surrogate organizations like ASME, ANS, AIF, etc. However, it has evolved through the years, due either to the bureaucratic momentum or the vacuum in industry leadership, into a situation where one sees an ever increasing number of detailed ''requirements'' prescribed by the regulators. Within the scope of activities covered by Section XI, there is no exception: e.g., NUREG-067, -0531 -1061; NUREG-0313 Rev. 0, Rev. 1, and now Rev. 2; IE Bulletins 82-03, 83-02; and Generic Letters 84-11, and 84-07, etc. for one issue of pipe crack alone; and there are more to come. There appears a consensus among all concerned parties including regulators that this is not a desirable situation and that something must be done to reverse this trend. The purpose of this discussion is, therefore, to explore the areas where the Section XI Code can be restructured to meet this need, and to seek ideas from the representatives of the regulated industry on the methods of implementation that are effective, efficient, and acceptable to all concerned parties

  3. ASME code considerations for the compact heat exchanger

    Energy Technology Data Exchange (ETDEWEB)

    Nestell, James [MPR Associates Inc., Alexandria, VA (United States); Sham, Sam [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2015-08-31

    robustness. Classic shell and tube designs will be large and costly, and may only be appropriate in steam generator service in the SHX where boiling inside the tubes occurs. For other energy conversion systems, all of these features can be met in a compact heat exchanger design. This report will examine some of the ASME Code issues that will need to be addressed to allow use of a Code-qualified compact heat exchanger in IHX or SHX nuclear service. Most effort will focus on the IHX, since the safety-related (Class A) design rules are more extensive than those for important-to-safety (Class B) or commercial rules that are relevant to the SHX.

  4. ASME nuclear codes and standards: Scope of coverage and current initiatives

    International Nuclear Information System (INIS)

    The objective of this paper is to address the broad scope of coverage of nuclear codes, standards and guides produced and administered by the American Society of Mechanical Engineers (ASME). Background information is provided regarding the evolution of the present activities. Details are provided on current initiatives intended to permit ASME to meet the needs of a changing nuclear industry on a worldwide scale. During the early years of commercial nuclear power, ASME produced a code for the construction of nuclear vessels used in the reactor coolant pressure boundary, containment and auxiliary systems. In response to industry growth, ASME Code coverage soon broadened to include rules for construction of other nuclear components, and inservice inspection of nuclear reactor coolant systems. In the years following this, the scope of ASME nuclear codes, standards and guides has been broadened significantly to include air cleaning activities for nuclear power reactors, operation and maintenance of nuclear power plants, quality assurance programs, cranes for nuclear facilities, qualification of mechanical equipment, and concrete reactor vessels and containments. ASME focuses on globalization of its codes, standards and guides by encouraging and promoting their use in the international community and by actively seeking participation of international members on its technical and supervisory committees and in accreditation activities. Details are provided on current international representation. Initiatives are underway to separate the technical requirements from administrative and enforcement requirements, to convert to hard metric units, to provide for non-U. S. materials, and to provide for translations into non-English languages. ASME activity as an accredited ISO 9000 registrar for suppliers of mechanical equipment is described. Rules are being developed for construction of containment systems for nuclear spent fuel and high-level waste transport packagings. Intensive

  5. 46 CFR 52.01-2 - Adoption of section I of the ASME Boiler and Pressure Vessel Code.

    Science.gov (United States)

    2010-10-01

    ... and Pressure Vessel Code. (a) Main power boilers and auxiliary boilers shall be designed, constructed, inspected, tested, and stamped in accordance with section I of the ASME Boiler and Pressure Vessel Code... this part. The provisions in the appendix to section I of the ASME Boiler and Pressure Vessel Code...

  6. 46 CFR 53.01-3 - Adoption of section IV of the ASME Boiler and Pressure Vessel Code.

    Science.gov (United States)

    2010-10-01

    ... Boiler and Pressure Vessel Code. (a) Heating boilers shall be designed, constructed, inspected, tested, and stamped in accordance with section IV of the ASME Boiler and Pressure Vessel Code (incorporated by... provisions in the appendices to section IV of the ASME Boiler and Pressure Vessel Code are adopted and...

  7. Technical justification for ASME code section xi crack detection by visual examination

    Energy Technology Data Exchange (ETDEWEB)

    Nickell, R.E. [Applied Science and Technology, Poway, CA (United States); Rashid, Y.R. [ANATECH Corp., San Diego (United States)

    2001-07-01

    A critical technical element of nuclear power plant license renewal in the United States is the demonstration that the effects of aging do not compromise the intended safety function(s) of a system, structure, or component during the extended term of operation. The demonstration may take either of two forms. First, it can be shown that the design basis for the system, structure, or component is sufficiently robust that the aging effects have been insignificant through the current license term, and will continue to be insignificant through the extended term. Alternatively, it can be shown that, while the aging effects may be potentially significant, those effects can be managed and functionality maintained by defined programmatic activities during the extended term of operation. The first of the two approaches is generally provided by the construction basis, such as construction in accordance with the ASME Code Section III and other consensus codes and standards. The second of the two approaches is often provided by periodic inservice inspection and testing, in accordance with the ASME Code Section XI. The purpose of the ASME Section XI inspections and tests is to assure that systems, components, and structures are fit for continued service until the next scheduled inspection or test. The purpose of this paper is to document the effectiveness of the current ASME Code Section XI visual examination procedures in detecting the effects of aging for systems, structures, and components that are tolerant of mature cracks. (author)

  8. A PVRC project on review of ASME nuclear codes and standards

    International Nuclear Information System (INIS)

    The ASME Board on Nuclear Codes and Standards (BNCS) determined in 1986 that an overall technical review of existing ASME nuclear codes and standards was needed. Determination was made realizing these codes and standards were developed and issued during and parallel to rapid growth of commercial nuclear power plants in the United States during the 1960's and 1970's. Decision to initiate this study was reinforced by many factors, but most importantly a need to capture a pool of knowledge and lessons learned from an existing generation of technical experts with codes and standards background. This paper describes the project responsibility placed with the Pressure Vessel Research Council and activity initiated in January 1988. The review is vested in a Steering Committee which oversees six subcommittees having individual scopes of responsibility

  9. Experimental investigation and ASME code study of creep-fatigue interaction correlation for 316 stainless steel

    International Nuclear Information System (INIS)

    Background: In super-critical water-cooled reactor, creep-fatigue under high working temperature will affect life of various equipment. Purpose: Understanding characteristics of creep-fatigue interaction correlation is important before evaluating its damage by ASME code. Methods: In order to study creep-fatigue interaction of 316 stainless steel (316SS), three types of creep-fatigue interaction have been taken into consideration in our experiments, which include traditional creep-fatigue interaction subjected to cycling load with hold times at its peak and also creep-fatigue interaction by decoupling creep and fatigue load. Based on the experimental data, the different types of creep-fatigue interaction have been compared and discussed. Moreover, suitability of ASME NH rules in assessing various creep-fatigue interactions of 316SS produced in China is investigated. Results: Creep-fatigue damage envelop of 316SS from ASME can cover the experimental results from the three types of experiments mentioned above. Conclusions: This experimental study is useful as a reference in creep-fatigue interaction experiments, application of ASME code and study of mechanical characteristic of high temperature structural materials in generation IV nuclear power plant. (authors)

  10. Overview of the new ASME Performance Test Code for wind turbines

    Science.gov (United States)

    Spera, David A.

    1986-01-01

    The principal technical features of the ASME Performance Test Code for wind turbines are presented and such issues as what sizes and types of wind turbines should be included, what the principal measure of performance should be, and how wind speed should be measured are discussed. It is concluded that the present test code is applicable to wind turbine systems of all sizes. The principal measure of performance as defined by this code is net energy output and the primary performance parameter is the 'test energy ratio' which is based on a comparison between the measured and predicted energy output for the test period.

  11. Modification of the ASME code z-factor for circumferential surface crack in nuclear ferritic pipings

    International Nuclear Information System (INIS)

    The purpose of this paper is to modify the ASME Code Z-Factor, which is used in the evaluation of circumferential surface crack in nuclear ferritic pipings. The ASME Code Z-Factor is a load multiplier to compensate plastic load with elasto-plastic load. The current ASME Code Z-Factor underestimates pipe maximum load. In this study, the original SC. TNP method is modified first because the original SC. TNP method has a problem that the maximum allowable load predicted from the original SC. TNP method is slightly higher than that measured from the experiment. Then the new Z-Factor is developed using the modified SC. TNP method. The desirability of both the modified SC. TNP method and the new Z-Factor is examined using the experimental results for the circumferential surface crack in pipings. The results show that (1) the modified SC. TNP method is good for predicting the circumferential surface crack behavior in pipings, and (2) the Z-Factor obtained from the modified SC. TNP method well predicts the behavior of circumferential surface crack in ferritic pipings. 30 refs., 13 figs., 4 tabs. (author)

  12. ASME规范NPT钢印取证容器的焊接%Welding of NPT-Stamped Vessel in Accordance with ASME Code

    Institute of Scientific and Technical Information of China (English)

    吴佳

    2014-01-01

    结合ASME规范,介绍ASME NPT钢印取证容器焊接过程。%Based on ASME Boiler&Pressure Vessel Code, the paper explains how to conduct welding operation on NPT-Stamped vessels that are certificated in accordance with ASME code.

  13. Methods for incorporating effects of LWR coolant environment into ASME code fatigue evaluations.

    Energy Technology Data Exchange (ETDEWEB)

    Chopra, O. K.

    1999-04-15

    The ASME Boiler and Pressure Vessel Code provides rules for the construction of nuclear power plant components. Appendix I to Section HI of the Code specifies design fatigue curves for structural materials. However, the effects of light water reactor (LWR) coolant environments are not explicitly addressed by the Code design curves. Recent test data illustrate potentially significant effects of LWR environments on the fatigue resistance of carbon and low-alloy steels and austenitic stainless steels (SSs). Under certain loading and environmental conditions, fatigue lives of carbon and low-alloy steels can be a factor of {approx}70 lower in an LWR environment than in air. These results raise the issue of whether the design fatigue curves in Section III are appropriate for the intended purpose. This paper presents the two methods that have been proposed for incorporating the effects of LWR coolant environments into the ASME Code fatigue evaluations. The mechanisms of fatigue crack initiation in carbon and low-alloy steels and austenitic SSs in LWR environments are discussed.

  14. New methods of analysis of materials strength data for the ASME Boiler and Pressure Vessel Code

    International Nuclear Information System (INIS)

    Tensile and creep data of the type used to establish allowable stress levels for the ASME Boiler and Pressure Vessel Code have been examined for type 321H stainless steel. Both inhomogeneous, unbalanced data sets and well-planned homogeneous data sets have been examined. Data have been analyzed by implementing standard manual techniques on a modern digital computer. In addition, more sophisticated techniques, practical only through the use of the computer, have been applied. The result clearly demonstrates the efficacy of computerized techniques for these types of analyses

  15. Application of the ASME code in designing containment vessels for packages used to transport radioactive materials

    International Nuclear Information System (INIS)

    The primary concern governing the design of shipping packages containing radioactive materials is public safety during transport. When these shipments are within the regulatory jurisdiction of the US Department of Energy, the recommended design criterion for the primary containment vessel is either Section III or Section VIII, Division 1, of the ASME Boiler and Pressure Vessel Code, depending on the activity of the contents. The objective of this paper is to discuss the design of a prototypic containment vessel representative of a packaging for the transport of high-level radioactive material

  16. 78 FR 37721 - Approval of American Society of Mechanical Engineers' Code Cases

    Science.gov (United States)

    2013-06-24

    ...-1232, ``Operation and Maintenance code Case, Acceptability, ASME OM Code.'' The subject DGs list the... acceptable voluntary alternative to the mandatory American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (BPV) Code and Operation and Maintenance (OM) of nuclear power plant provisions approved...

  17. Review of the margins for ASME code fatigue design curve - effects of surface roughness and material variability.

    Energy Technology Data Exchange (ETDEWEB)

    Chopra, O. K.; Shack, W. J.; Energy Technology

    2003-10-03

    The ASME Boiler and Pressure Vessel Code provides rules for the construction of nuclear power plant components. The Code specifies fatigue design curves for structural materials. However, the effects of light water reactor (LWR) coolant environments are not explicitly addressed by the Code design curves. Existing fatigue strain-vs.-life ({var_epsilon}-N) data illustrate potentially significant effects of LWR coolant environments on the fatigue resistance of pressure vessel and piping steels. This report provides an overview of the existing fatigue {var_epsilon}-N data for carbon and low-alloy steels and wrought and cast austenitic SSs to define the effects of key material, loading, and environmental parameters on the fatigue lives of the steels. Experimental data are presented on the effects of surface roughness on the fatigue life of these steels in air and LWR environments. Statistical models are presented for estimating the fatigue {var_epsilon}-N curves as a function of the material, loading, and environmental parameters. Two methods for incorporating environmental effects into the ASME Code fatigue evaluations are discussed. Data available in the literature have been reviewed to evaluate the conservatism in the existing ASME Code fatigue evaluations. A critical review of the margins for ASME Code fatigue design curves is presented.

  18. Computer Program of SIE ASME-NH Code for Structural Integrity Evaluation of Next Generation Reactors Subjecting to Elevated Temperature Operations

    International Nuclear Information System (INIS)

    In this report, the SIE ASME (Structural Integrity Evaluations by ASME-NH), which has a computerized implementation of ASME Pressure Vessels and Piping Code Section III Subsection NH rules, is developed to apply to the next generation reactor design subjecting to the elevated temperature operations over 500 .deg. C and over 30 years design lifetime, and the user's manual for this program is described in detail

  19. Comparative study of design of piping supports class 1, 2 and 3 considering german code KTA and ASME III - NF

    International Nuclear Information System (INIS)

    The objective of this paper is developing a comparative study of the design criteria for class 1, 2, 3 piping supports considering the American Code ASME Section III - NF and the German Code KTA 3205.1 to the Primary Circuit, KTA 3205.2 to the others systems and KTA 3205.3 series-production standards supports of a PWR nuclear power plant. An additional purpose of the paper is a general analysis of the main design concepts of the American Code ASME Boiler and Pressure Vessel Code, Section III, Division 1 and German Nuclear Design Code KTA that was performed in order to aid the comparative study proposed. The relevance of this study is to show the differences between codes ASME and KTA since they were applied in the design of the Nuclear Power Plants Angra 1 and Angra 2, and to the design of Angra 3, which is at the moment under construction. It is also considered their use in the design of nuclear installations such as RMB - Reator MultiProposito Brasileiro and LABGENE - Laboratorio de Geracao Nucleoeletrica. (author)

  20. CEASEMT system: the TEDEL code. Pipings - Plasticity - Dynamics - Statics - Buckling - Thermoplasticity - Creep - Large displacements - FLUIDS - SEISMS - ASME

    International Nuclear Information System (INIS)

    The TEDEL code is intended for elastic and plastic computation of three-dimensional pipes and frames with possible junction to shells. The structures are described with using assemblies of beam elements, or piping elements such as, curved pipes, 900 elbows, tees, any elements, the stiffness properties of which are given to TEDEL. TEDEL allows the dynamic computation of the structures: search of eigenfrequencies and eigenmodes of vibration, time response to any time-dependent canvassing. This response can be obtained either from recombining a number of eigenmodes, or from a direct numerical integration of the dynamics equation. In these last two cases TEDEL accounts for some possible damping. A TEDEL option allows critical buckling loads to be computed (Euler). The structures can offer any shapes comprising any number of materials. The data are readout without any format, and distributed in optional commands with a precise physical meaning: GEOMETRY, MATERIALS, LOAD, COMPUTATION, END. A dynamical memory control allows the size of the routine to be adapted to the problem to be treated. For pipings, an option is intended for an automatic checking of the stress level with regard to the limiting values of the ASME. Geometrical data, node positions, element numbering are given by COCO which also delivers perspective drawings for the structure to be studied. The results on magnetic tapes can be treated by the subroutines ESPACE-VISU-TEMPS

  1. Comparisons of ASME-code fatigue-evaluation methods for nuclear Class 1 piping with Class 2 or 3 piping

    International Nuclear Information System (INIS)

    The fatigue evaluation procedure used in the ASME Boiler and Pressure Vessel Code, Sect. III, Nuclear Power Plant Components, for Class 1 piping is different from the procedure used for Class 2 or 3 piping. The basis for each procedure is described, and correlations between the two procedures are presented. Conditions under which either procedure or both may be unconservative are noted. Potential changes in the Class 2 or 3 piping procedure to explicitly cover all loadings are discussed. However, the report is intended to be informative, and while the contents of the report may guide future Code changes, specific recommendations are not given herein

  2. 78 FR 79363 - Hazardous Materials: Adoption of ASME Code Section XII and the National Board Inspection Code

    Science.gov (United States)

    2013-12-30

    ..., installation, maintenance, and testing of boilers, pressure vessels, and other pressure retaining items. The... design, construction, certification, recertification and maintenance of cargo tank motor vehicles... from the American Society of Mechanical Engineers (ASME), the National Board of Boiler and...

  3. 78 FR 37885 - Approval of American Society of Mechanical Engineers' Code Cases

    Science.gov (United States)

    2013-06-24

    ... Mechanical Engineers' Code Cases; Proposed Rule #0;#0;Federal Register / Vol. 78, No. 121 / Monday, June 24... American Society of Mechanical Engineers' Code Cases AGENCY: Nuclear Regulatory Commission. ACTION... revised Code Cases published by the American Society of Mechanical Engineers (ASME). This proposed...

  4. ASME power test code ptc 4.1 for steam generators; Codigo de pruebas de potencia ASME ptc 4.1 para generadores de vapor

    Energy Technology Data Exchange (ETDEWEB)

    Plauchu Alcantara, Jorge Alberto [Plauchu Consultores, Morelia, Michoacan (Mexico)

    2001-07-01

    This presentation is oriented towards those who in this subject have experience in the design and equipment specification, plant projects, factory and field testing, operation or result analyses. An important fraction of the national energy supply, approximately 13%, is applied to the steam generation in the different aspects of the industrial activity, in the electrical industry of public service and in the commercial and services sector. The development of the national programs of energy efficiency verifies this when dedicating to this use of the energy important projects, some of them with support of the USAID. The measurement of the energy utilization or the efficiency of steam generators (or boilers) is made applying some procedure agreed by the parts and the one of greater acceptance and best known in Mexico and internationally is the ASME Power Test Code PTC 4.1 for Steam Generators. The purpose and formality in the determination of efficiency and of steam generation capacity behavior, thermal basic regime or fulfillment of guarantees, radically changes the exigencies of strict attachment to the PTC 4.1 This definition will determine the importance of the test method selected, the deviations and convened exceptions, the influence of the precision and the measurement errors, the consideration of auxiliary equipment, etc. An interpretation or incorrect application of the Test Code has lead and will lead to results and nonreliable decisions. [Spanish] Esta exposicion se orienta a quienes en este tema cuenta con experiencia en diseno y especificacion de equipo, proyecto de planta, pruebas en fabrica y campo, operacion o analisis de resultados. Una fraccion importante de la oferta nacional de energia, 13% aproximadamente, se aplica a la generacion de vapor en diferentes giros de actividad industrial, en la industria electrica, de servicio publico y en el sector de servicios y comercial. El desarrollo de los programas nacionales de eficiencia energetica comprueba

  5. 76 FR 11191 - Hazardous Materials: Adoption of ASME Code Section XII and the National Board Inspection Code

    Science.gov (United States)

    2011-03-01

    ... the ANPRM published on December 23, 2010 (ANPRM; 75 FR 80765). The ASME Boiler and Pressure Vessel... April 11, 2000 (65 FR 19477) or you may visit http://www.regulations.gov . SUPPLEMENTARY INFORMATION: I. Background On December 23, 2010, PHMSA published an advance notice of proposed rulemaking (ANPRM; 75 FR...

  6. 46 CFR 54.01-2 - Adoption of division 1 of section VIII of the ASME Boiler and Pressure Vessel Code.

    Science.gov (United States)

    2010-10-01

    ... Boiler and Pressure Vessel Code. 54.01-2 Section 54.01-2 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) MARINE ENGINEERING PRESSURE VESSELS General Requirements § 54.01-2 Adoption of division 1 of section VIII of the ASME Boiler and Pressure Vessel Code. (a) Pressure vessels shall...

  7. ASME stress linearization and classification - a discussion based on a case study

    International Nuclear Information System (INIS)

    The ASME code, specially in its Nuclear Division (Subsection NB - Class I Components), gives some recommendations to the structural analyst on how to perform the verifications required to prove the design as good as the by-analysis prevented failures modes. Each of these failure modes has specific stress limits which are established based on simple but conservative hypothesis like the material perfectly plastic behavior and the shell theory with its typical membrane and bending stresses with linear distribution along the thickness. Other detail to keep in mind is the code distinction between primary and secondary stresses (respectively, stress that came due to equilibrium and due to displacement compatibility). In general, the numerical models used in the analyses are developed with plane or 3D solid elements and due this fact no direct comparison with the code limits can be done and, besides that, the programs do not distinguish between primary and secondary stresses. Mostly, the later are produced due to the temperature variation but they also appear near discontinuities. Sometimes, this classification is not so clear or direct. To perform the required ASME Code verifications the analyst should obtain the membrane and bending stresses from the plane or 3-D model which is called stress linearization and, also, should classify them as primary and secondary. (The excess between the maximum stress at a point and the sum of these linearized values is called peak stress and is included in the fatigue verification.) This task, most of the time is not a simple one due to the nature of the involved load and/or the complex geometry under analysis. In fact, there are several studies discussing on how to perform these stress classification and linearization. The present paper shows a discussion on how to perform these verifications based on a generic geometry found in many plants, from petrochemical to nuclear, which emphasizes some of theses issues. (author)

  8. DEVELOPMENT OF ASME SECTION X CODE RULES FOR HIGH PRESSURE COMPOSITE HYDROGEN PRESSURE VESSELS WITH NON-LOAD SHARING LINERS

    Energy Technology Data Exchange (ETDEWEB)

    Rawls, G.; Newhouse, N.; Rana, M.; Shelley, B.; Gorman, M.

    2010-04-13

    The Boiler and Pressure Vessel Project Team on Hydrogen Tanks was formed in 2004 to develop Code rules to address the various needs that had been identified for the design and construction of up to 15000 psi hydrogen storage vessel. One of these needs was the development of Code rules for high pressure composite vessels with non-load sharing liners for stationary applications. In 2009, ASME approved new Appendix 8, for Section X Code which contains the rules for these vessels. These vessels are designated as Class III vessels with design pressure ranging from 20.7 MPa (3,000 ps)i to 103.4 MPa (15,000 psi) and maximum allowable outside liner diameter of 2.54 m (100 inches). The maximum design life of these vessels is limited to 20 years. Design, fabrication, and examination requirements have been specified, included Acoustic Emission testing at time of manufacture. The Code rules include the design qualification testing of prototype vessels. Qualification includes proof, expansion, burst, cyclic fatigue, creep, flaw, permeability, torque, penetration, and environmental testing.

  9. Risk-informed appendices G and E for section XI of the ASME Boiler and Pressure Vessel Code

    Energy Technology Data Exchange (ETDEWEB)

    Carter, B; Spanner, J. [EPRI, (United States); Server, W. [ATI Consulting (United States); Gamble, R. [Sartrex Corporation (United States); Bishop, B.; Palm, N.; Heinecke, C. [Westinghouse Electric Company (United States)

    2011-07-01

    Full text of publication follows: The American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section XI, contains two appendices (G and E) related to reactor pressure boundary integrity. Appendix G provides procedures for defining Service Level A and B pressure temperature limits for ferritic components in the reactor coolant pressure boundary. Recently, an alternative risk informed methodology has been developed for ASME Section XI, Appendix G. The alternative methodology provides simple procedures to define risk informed pressure temperature limits for Service Level A and B events, including leak testing and reactor start up and shut down for both pressurized water reactors (PWRs) and boiling water reactors (BWRs). Risk informed pressure temperature limits provide more operational flexibility, particularly for reactor pressure vessels (RPV) with relatively high irradiation levels and radiation sensitive materials. Appendix E of Section XI provides a methodology for assessing conditions when the Appendix G limits are exceeded. A similar risk informed methodology is being considered for Appendix E. The probabilistic fracture mechanics evaluations used to develop the risk informed relationships included appropriate material properties for the range of RPV materials in operating plants in the United States and operating history and system operational constraints in both BWRs and PWRs. The analysis results were used to define pressure temperature relationships that provide an acceptable level of risk, consistent with safety goals defined by the U.S. Nuclear Regulatory Commission. The alternative methodologies for Appendices G and E will provide greater operational flexibility, especially for Service Level A and B events that may adversely affect efficient and safe plant operation, such as low temperature over pressurization for PWRs and BWR leak testing. Overall, application of the risk informed appendices can result in increased plant

  10. Review of ASME nuclear codes and standards- subcommittee on general topics

    International Nuclear Information System (INIS)

    The Pressure Vessel Research Committee has a project to review and make recommendations for the simplification of existing nuclear codes and standards. A steering committee is coordinating the review and will be making the recommendations. There are six subcommittees reviewing Section III and Section XI requirements and reporting to the Steering Committee. This paper is a progress report on the activities of the subcommittee on general topics. Aspects of the code rules that have been considered so far are documentation for replacements under Section XI, inservice inspection intervals, frequency of code addenda, transfer of knowledge, component N-certificate responsibilities, interface between Sections III and XI, and resolution of non-conformance

  11. News from the Library: A new key reference work for the engineer: ASME's Boiler and Pressure Vessel Code at the CERN Library

    CERN Multimedia

    CERN Library

    2011-01-01

    The Library is aiming at offering a range of constantly updated reference books, to cover all areas of CERN activity. A recent addition to our collections strengthens our offer in the Engineering field.   The CERN Library now holds a copy of the complete ASME Boiler and Pressure Vessel Code, 2010 edition. This code establishes rules of safety governing the design, fabrication, and inspection of boilers and pressure vessels, and nuclear power plant components during construction. This document is considered worldwide as a reference for mechanical design and is therefore important for the CERN community. The Code published by ASME (American Society of Mechanical Engineers) is kept current by the Boiler and Pressure Committee, a volunteer group of more than 950 engineers worldwide. The Committee meets regularly to consider requests for interpretations, revision, and to develop new rules. The CERN Library receives updates and includes them in the volumes until the next edition, which is expected to ...

  12. 76 FR 36231 - American Society of Mechanical Engineers (ASME) Codes and New and Revised ASME Code Cases

    Science.gov (United States)

    2011-06-21

    ... last incorporated by reference into the regulations in a final rule dated September 10, 2008 (73 FR 52730), as corrected on October 2, 2008 (73 FR 57235), incorporating Section III of the 2004 Edition of... on May 4, 2010 (75 FR 24324). The public comment period for the proposed rule closed on July 19,...

  13. Activated sludge models ASM1, ASM2, ASM2d and ASM3

    DEFF Research Database (Denmark)

    Henze, Mogens; Gujer, W.; Mino, T.;

    : Introduction, ASM 2, Typical Wastewater Characteristics and Kinetic and Stoichiometric Constants, Wastewater Characterization for Activated Sludge Processes, Calibration of the ASM 2, Model Limitations, Conclusion, Bibliography ASM 1: Introduction, Method of Model Presentation, Model Incorporating Carbon......This book has been produced to give a total overview of the Activated Sludge Model (ASM) family at the start of 2000 and to give the reader easy access to the different models in their original versions. It thus presents ASM1, ASM2, ASM2d and ASM3 together for the first time.Modelling of activated...... in the Model, ASM3: Stoichiometry, ASM3: Kinetics, Limitations of ASM3, Aspects of application of ASM3, ASM3C: A Carbon based model, Conclusion ASM 2d: Introduction, Conceptual Approach, ASM 2d, Typical Wastewater Characteristics and Kinetic and Stoichiometric Constants, Limitations, Conclusion ASM 2...

  14. The safety relief valve handbook design and use of process safety valves to ASME and International codes and standards

    CERN Document Server

    Hellemans, Marc

    2009-01-01

    The Safety Valve Handbook is a professional reference for design, process, instrumentation, plant and maintenance engineers who work with fluid flow and transportation systems in the process industries, which covers the chemical, oil and gas, water, paper and pulp, food and bio products and energy sectors. It meets the need of engineers who have responsibilities for specifying, installing, inspecting or maintaining safety valves and flow control systems. It will also be an important reference for process safety and loss prevention engineers, environmental engineers, and plant and process designers who need to understand the operation of safety valves in a wider equipment or plant design context. . No other publication is dedicated to safety valves or to the extensive codes and standards that govern their installation and use. A single source means users save time in searching for specific information about safety valves. . The Safety Valve Handbook contains all of the vital technical and standards informat...

  15. Evaluation of High Temperature Creep Fatigue Based on ASME Code 2605-1%基于ASME规范案例2605-1高温蠕变疲劳评定方法

    Institute of Scientific and Technical Information of China (English)

    赵景玉; 卢峰

    2015-01-01

    阐述了如何使用ASME规范案例2605-1对CrMoV钢加氢反应器进行高温蠕变疲劳分析与评定,总结出方法一是当前工程化过程中使用的主要方法。提出应开展高温蠕变疲劳耦合分析工具的开发,以尽早突破技术壁垒,开拓国际市场。%The paper explains how to use ASME Code Case 2605-1 to analyse and evaluate the high temperature creep fatigue of CrMoV steel reactors. The method№1 is used widely in projects. The software for the analysis of high temperature creep fatigue is to be developed in further in order to break the technical rampart and expand the international market.

  16. 特殊结构的常规和非常规超声检测--ASME 2013 NDE亮点评析%Evaluation of NDE Key Requirements in 2013 ASME Code:Conventional and Unconventional UT Techniques for Special Construction

    Institute of Scientific and Technical Information of China (English)

    李衍

    2015-01-01

    重点评析了ASME NDE最新版(2013)第Ⅴ卷«无损检测»中涉及承压设备特殊结构常规、非常规体积检测方法(计算机成像技术)的亮点,包括堆焊层、小径管、管接头之类检测时有一定难度的规范要求、施探要领和典型案例,突出扫查建模仿真和检测特性验证的重要性。通过对照国标、行标、企标,结合国情行情,找差距、纠偏误,在承压设备无损检测向高端、高质、高效发展的方向上,使中国企业正确执行ASME有关规范的水平更上一个台阶。%This article presents an evaluation on the key requirements of the updated ASME Code(2013), Section Ⅴ NDE,in terms of conventional and unconventional volumetric inspection methods (computerized imaging techniques)for some special structure in pressure equipment,such as weld metal overlay cladding,nozzle welds and small diameter tubes and so on,highlighting the importance of modeling scan and performance demonstration. Through discussion,comparing our industrial standards and enterprise standards with the international Code,and looking at our national condition and company status,we may expect to find a gap and fill in the blank,correct omissions and errors in this field,so that we can,on the path of NDE development towards high-end,high quality and high efficiency,make the Chinese enterprise performing the referencing ASME Code Section rise to a higher level.

  17. Inhomogenous quantum codes (Ⅰ):additive case

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    In this paper,the quantum error-correcting codes are generalized to the inhomogenous quantumstate space Cq1  Cq2 ··· Cqn,where qi(1 i n) are arbitrary positive integers.By attaching an abelian group Ai of order qi to the space Cqi(1 i n),we present the stabilizer construction of such inhomogenous quantum codes,called additive quantum codes,in term of the character theory of the abelian group A = A1⊕A2⊕···⊕An.As usual case,such construction opens a way to get inhomogenous quantum codes from the classical mixed linear codes.We also present Singleton bound for inhomogenous additive quantum codes and show several quantum codes to meet such bound by using classical mixed algebraic-geometric codes.

  18. Cisco ASM Router

    CERN Multimedia

    2001-01-01

    One of the two "ASM/2-32EM" boxes installed in 1988, from "Cisco Systems Inc." - then an unknown 20-employee company in Menlo Park, California (USA). This is one of the first two Cisco boxes to appear in Switzerland, and possibly Europe. The 220v power supply was a special modification made for use at CERN. They supported IP address filtering, which seemed just what CERN needed to help protect the new Cray XMP-48 super computer from network hackers. The two ASM boxes were both routers and terminal servers. They protected a secure private Ethernet segment used by the Cray project, as well as providing secure terminal connections to that segment, including CERN's first dialback terminal service, which allowed Cray and CERN system analysts to work on the machine from home, using another Cisco feature called TACACS. (Kindly offered by B. Segal who discovered this company while at a Usenix Conference in Phoenix, Arizona in June 1987.)

  19. ASME Division 4 fusion energy devices

    Energy Technology Data Exchange (ETDEWEB)

    Sowder, W.K. [Quality Management Services, LLC, Idaho Falls, Idaho (United States); Barnes, R.W. [PE-Anric Enterprices Inc., Toronto, Ontario (Canada)

    2011-07-01

    There is an on-going effort within the ASME Section III Codes and Standards organization approved by the ASME Board of Nuclear Codes and Standards to develop rules for the construction of fusion-energy-related components such as vacuum vessel (vacuum or target chamber), cryostat and superconductor structures and their interaction with each other. These rules will be found in Division 4 of Section III entitled 'Fusion Energy Devices (BPV III)'. Other related support structures, including metallic and non-metallic materials, containment or confinement structures, fusion-system piping, vessels, valves, pumps, and supports will also be covered. The rules shall contain requirements for materials, design, fabrication, testing, examination, inspection, certification, and stamping. The formation of the new Sub-Group Fusion Energy Devices that will develop these rules is just beginning to develop its membership and future working group support structures. (author)

  20. 46 CFR 56.60-1 - Acceptable materials and specifications (replaces 123 and Table 126.1 in ASME B31.1).

    Science.gov (United States)

    2010-10-01

    ... UCS23, Sec. VIII of the ASME Boiler and Pressure Vessel Code (11). A 192 Carbon steel boiler tubes PG23.1, Sec. I of the ASME Boiler and Pressure Vessel Code (10). A 210 Medium carbon boiler tubes PG23.1, Sec. I of the ASME Boiler and Pressure Vessel Code A 213 Ferritic and austenitic boiler tubes...

  1. Comprehensive Report For Proposed Elevated Temperature Elastic Perfectly Plastic (EPP) Code Cases Representative Example Problems

    Energy Technology Data Exchange (ETDEWEB)

    Greg L. Hollinger

    2014-06-01

    Background: The current rules in the nuclear section of the ASME Boiler and Pressure Vessel (B&PV) Code , Section III, Subsection NH for the evaluation of strain limits and creep-fatigue damage using simplified methods based on elastic analysis have been deemed inappropriate for Alloy 617 at temperatures above 1200F (650C)1. To address this issue, proposed code rules have been developed which are based on the use of elastic-perfectly plastic (E-PP) analysis methods and which are expected to be applicable to very high temperatures. The proposed rules for strain limits and creep-fatigue evaluation were initially documented in the technical literature 2, 3, and have been recently revised to incorporate comments and simplify their application. The revised code cases have been developed. Task Objectives: The goal of the Sample Problem task is to exercise these code cases through example problems to demonstrate their feasibility and, also, to identify potential corrections and improvements should problems be encountered. This will provide input to the development of technical background documents for consideration by the applicable B&PV committees considering these code cases for approval. This task has been performed by Hollinger and Pease of Becht Engineering Co., Inc., Nuclear Services Division and a report detailing the results of the E-PP analyses conducted on example problems per the procedures of the E-PP strain limits and creep-fatigue draft code cases is enclosed as Enclosure 1. Conclusions: The feasibility of the application of the E-PP code cases has been demonstrated through example problems that consist of realistic geometry (a nozzle attached to a semi-hemispheric shell with a circumferential weld) and load (pressure; pipe reaction load applied at the end of the nozzle, including axial and shear forces, bending and torsional moments; through-wall transient temperature gradient) and design and operating conditions (Levels A, B and C).

  2. Extension of ASME VIII Division 1 design limits

    Energy Technology Data Exchange (ETDEWEB)

    Marriott, D.L. [Stress Engineering Services, Inc., Cincinnati, OH (United States). Consumer Products Division

    1995-12-01

    ASME Subcommittee 2 on materials presented a series of questions to PVRC regarding the acceptability of using the criteria of ASME Section 2, Part D, Appendix 1 for extending design limits for AISI 304 stainless steel beyond 1,500 F to 2,000 F and Alloy 800 HT from 1,650 F to 1,800 F respectively. This paper describes a project supported by PVRC to try and find an answer to this question. The project consisted of three parts. The first was a survey to determine the intent behind the wording of the ASME criteria in order to make an extrapolation of methods for setting design limits to higher temperatures. The second was a demonstration of a methodology for developing very high temperature limits, using a set of creep data for Alloy 800 HT. The third was a parametric study to evaluate the feasibility of using the minimum creep rate based deformation criterion used in the ASME Code to set strain related limits on materials showing predominantly tertiary creep. Based on this study, an alternative method to that currently employed by ASME in Appendix 1 has been proposed for setting high temperature design limits, based on a consistent margin on time to failure. This method has been presented to ASME for possible adoption. In addition, this investigation revealed some more detailed issues involving cyclic loading at very high temperature. It was recommended that these should be examined further by ASME. These issues are summarized briefly in this paper.

  3. Accelerator System Model (ASM) user manual with physics and engineering model documentation. ASM version 1.0

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1993-07-01

    The Accelerator System Model (ASM) is a computer program developed to model proton radiofrequency accelerators and to carry out system level trade studies. The ASM FORTRAN subroutines are incorporated into an intuitive graphical user interface which provides for the {open_quotes}construction{close_quotes} of the accelerator in a window on the computer screen. The interface is based on the Shell for Particle Accelerator Related Codes (SPARC) software technology written for the Macintosh operating system in the C programming language. This User Manual describes the operation and use of the ASM application within the SPARC interface. The Appendix provides a detailed description of the physics and engineering models used in ASM. ASM Version 1.0 is joint project of G. H. Gillespie Associates, Inc. and the Accelerator Technology (AT) Division of the Los Alamos National Laboratory. Neither the ASM Version 1.0 software nor this ASM Documentation may be reproduced without the expressed written consent of both the Los Alamos National Laboratory and G. H. Gillespie Associates, Inc.

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

    Energy Technology Data Exchange (ETDEWEB)

    William J. O’Donnell; Donald S. Griffin

    2007-05-07

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

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

    International Nuclear Information System (INIS)

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

  6. A Comparison Study of the Benchmark Problem for the SIE ASME-NH Application

    Energy Technology Data Exchange (ETDEWEB)

    Park, Chang Gyu; Koo, Gyeong Hoi; Lee, Jae Han [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2009-05-15

    Gen-IV nuclear energy systems are required to accomplish economic enhancements such as a long design lifetime of 60 years and a high temperature operation over 500 .deg. C. The ASME provides the Subsection NH code for an elevated temperature design code for the nuclear class 1 components but its application procedure is very complicated to carry out by a hand calculation. The SIE ASMENH( Structural Integrity Evaluation by the ASME Subsection NH code) program has been developed to overcome the complexity of ASME Subsection NH application to nuclear component design. The main objectives of this work are to compare the evaluation results of this study with the reference results of the benchmark problem by using the SIE ASME-NH program and discuss the difference between both results. It may also contribute in developing a good understanding of the SIE ASME-NH application procedure to a design evaluation of elevated temperature structures.

  7. Changing priorities of codes and standards -- quality engineering: A utility perspective

    International Nuclear Information System (INIS)

    The topic of this panel ''Changing Priorities of Codes and Standards--Quality Engineering'' is timely, since the ASME Code, Section XI is currently in the process of redefining its scope. Section XI is the Code that impacts operating nuclear power plants the most. The currently proposed change in scope is laudable, but there are other important changes needed, particularly in the area of quality engineering, for the, code to be more useful to operating plants. The currently proposed change in scope of the ASME Code, Section XI, recognizes that this Code is really a Structural Integrity Code and not just an In-Service Inspection Code, as its title historically suggested. This redirection is long overdue, since Section XI includes repairs and replacements, and also because the acceptance criteria are, in some cases, significantly different from the construction Code, namely the ASME Code, Section III. The authors feel that since Section XI is at a crossroads and in the process of redefining its scope, ASME should consider deleting the residual programmatic connection to Section III. In their opinion, the ASME's current charter for operating nuclear power plants should be the development of the governing technical rules, leaving the programmatic requirements, administration, and accreditation to those agencies who have regulatory jurisdiction over the nuclear power plant

  8. A Case for Dynamic Reverse-code Generation

    DEFF Research Database (Denmark)

    Lee, Jooyong

    2007-01-01

    . These implementations, however, inherently do not scale. As has often been said, the ultimate solution for backtracking is to use reverse code: executing the reverse code restores the previous states of a program. In our earlier work, we presented a method to generate reverse code on the fly while running a debugger....... This article presents a case study of dynamic reverse-code generation. We compare the memory usage of various backtracking methods in a simple but nontrivial example, a bounded-buffer program. In the case of non-deterministic programs such as this bounded-buffer program, our dynamic reverse-code generation can...

  9. Draft ASME Boiler and Pressure Vessel Code Section III, Division 5, Section HB, Subsection B, Code Case for Alloy 617 and Background Documentation

    Energy Technology Data Exchange (ETDEWEB)

    Wright, Julie Knibloe [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2015-08-01

    Alloy 617 is the leading candidate material for an intermediate heat exchanger for the very high temperature reactor. To evaluate the behavior of this material in the expected service conditions, strain controlled cyclic tests that include long hold times up to 240 minutes at maximum tensile strain were conducted at 850°C. In terms of the total number of cycles to failure, the fatigue resistance decreased when a hold time was added at peak tensile strain. Increases in the tensile hold duration degraded the creep fatigue resistance, at least to the investigated strain controlled hold time of up to 60 minutes at the 0.3% strain range and 240 minutes at the 1.0% strain range. The creep fatigue deformation mode is considered relative to the lack of saturation, or continually decreasing number of cycles to failure with increasing hold times. Additionally, preliminary values from the 850°C creep fatigue data are calculated for the creep fatigue damage diagram and have higher values of creep damage than those from tests at 950°C.

  10. New Semantic Model for Authentication Protocols in ASMs

    Institute of Scientific and Technical Information of China (English)

    Rui Xue; Deng-Guo Feng

    2004-01-01

    A new semantic model in Abstract State Model(ASM)for authentication protocols is presented.It highlights the Woo-Lam's ideas for authentication,which is the strongest one in Lowe's definition hierarchy for entity authentication.Apart from the flexible and natural features in forming and analyzing protocols inherited from ASM,the model defines both authentication and secrecy properties explicitly in first order sentences as invariants.The process of proving security properties with respect to an authentication protocol blends the correctness and secrecy properties together to avoid the potential flaws which may happen when treated separately.The security of revised Helsinki protocol is shown as a case study.The new model is different from the previous ones in ASMs.

  11. 基于ASME PTC4-1998标准的锅炉热效率微分偏差修正方法分析及比较%Analysis and Comparison on the Differential Deviation Correction Method for Boiler Thermal Efficiency Based on ASME PTC4-1998 Codes

    Institute of Scientific and Technical Information of China (English)

    李勇; 韩为; 王艳红

    2014-01-01

    Calculating the boiler thermal efficiency has become an indispensable task to evaluate and inspect the economy and energy-saving potential in coal-fired power plant at present. When a parameter changes, the existing correction method of boiler thermal efficiency is inconvenient to analyze its influence to the boiler thermal efficiency, and it is also inconvenient to analyze the reason and location which causes the reduction of the boiler thermal efficiency in operation. A new correction method which combined differential deviation method with first order Taylor formula was proposed to revise the various losses and boiler thermal efficiency, and comparison and analysis of correction calculation method were also conducted between the innovative correction method and ASME PTC4-1998. Taking a 1025 t/h boiler for example, various losses and boiler thermal efficiency were calculated under two different test conditions. The results show that the difference of the losses and boiler thermal efficiency calculated by differential modification method and ASME PTC4-1998 is tiny after modification, so the new method is convenient to guide operation for the boiler and also can be applied into the engineering practice.%计算锅炉热效率以便评价和考察机组的运行经济性和节能潜力已经成为目前火力发电厂不可或缺的重要任务。现有的锅炉热效率修正方法不便于分析某因素变化对锅炉热效率的影响,不便于分析运行中引起锅炉热效率降低的原因和部位。文中提出一种结合一阶泰勒公式并采用微分偏差修正锅炉各项损失及锅炉热效率的修正方法,并与 ASME PTC4-1998修正方法进行了比较和分析。通过对某1025t/h锅炉两个不同试验工况下锅炉各项损失及锅炉热效率的计算,表明微分偏差修正法修正后的各项损失及锅炉热效率与ASME PTC4-1998修正后的数值差别较小,因此该方法便于指导锅炉运行,可以应用于工程实际。

  12. Sample test cases using the environmental computer code NECTAR

    International Nuclear Information System (INIS)

    This note demonstrates a few of the many different ways in which the environmental computer code NECTAR may be used. Four sample test cases are presented and described to show how NECTAR input data are structured. Edited output is also presented to illustrate the format of the results. Two test cases demonstrate how NECTAR may be used to study radio-isotopes not explicitly included in the code. (U.K.)

  13. Translation Of Use Case Scenarios To Java Code

    Directory of Open Access Journals (Sweden)

    Michał Smialek

    2012-01-01

    Full Text Available Use cases are usually treated as second class citizens in the software developmentchain based on models. Their textual descriptions (scenarios are treatedas informal input to more formal design models that can then be (semi-automatically transformed down to code. In this paper we will show that usecase scenarios can gain precise metamodel-based notation and semantics enablingautomatic processing. What is more, we will show transformation algorithmsthat can transform use case scenarios directly to dynamic code in Java.The presented transformation can generate the full structure of the system followingthe MVP architectural pattern, including complete method contents forthe application logic (Presenter and presentation (View layers. It also providesa code skeleton for the domain logic (Model layer. The use case notation andthe transformation were implemented within a sophisticated tool suite. Basedon this, the paper discusses the evaluation efforts based on a case study.

  14. A He I Case-B Recombination Code

    CERN Document Server

    Porter, R L

    2007-01-01

    Recent calculations of collisionless, Case-B, He I emissivities were performed by Bauman et al. (2005). The source code used in the calculation has been freely available online since that paper was published. A number of changes have been made to simplify the use of the code by third parties. Here I provide details on how to obtain, compile, and execute the program and interpret the results.

  15. Report on FY15 alloy 617 code rules development

    Energy Technology Data Exchange (ETDEWEB)

    Sham, Sam [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Jetter, Robert I [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Hollinger, Greg [Becht Engineering Co., Inc., Liberty Corner, NJ (United States); Pease, Derrick [Becht Engineering Co., Inc., Liberty Corner, NJ (United States); Carter, Peter [Stress Engineering Services, Inc., Houston, TX (United States); Pu, Chao [Univ. of Tennessee, Knoxville, TN (United States); Wang, Yanli [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2015-09-01

    Due to its strength at very high temperatures, up to 950°C (1742°F), Alloy 617 is the reference construction material for structural components that operate at or near the outlet temperature of the very high temperature gas-cooled reactors. However, the current rules in the ASME Section III, Division 5 Subsection HB, Subpart B for the evaluation of strain limits and creep-fatigue damage using simplified methods based on elastic analysis have been deemed inappropriate for Alloy 617 at temperatures above 650°C (1200°F) (Corum and Brass, Proceedings of ASME 1991 Pressure Vessels and Piping Conference, PVP-Vol. 215, p.147, ASME, NY, 1991). The rationale for this exclusion is that at higher temperatures it is not feasible to decouple plasticity and creep, which is the basis for the current simplified rules. This temperature, 650°C (1200°F), is well below the temperature range of interest for this material for the high temperature gas-cooled reactors and the very high temperature gas-cooled reactors. The only current alternative is, thus, a full inelastic analysis requiring sophisticated material models that have not yet been formulated and verified. To address these issues, proposed code rules have been developed which are based on the use of elastic-perfectly plastic (EPP) analysis methods applicable to very high temperatures. The proposed rules for strain limits and creep-fatigue evaluation were initially documented in the technical literature (Carter, Jetter and Sham, Proceedings of ASME 2012 Pressure Vessels and Piping Conference, papers PVP 2012 28082 and PVP 2012 28083, ASME, NY, 2012), and have been recently revised to incorporate comments and simplify their application. Background documents have been developed for these two code cases to support the ASME Code committee approval process. These background documents for the EPP strain limits and creep-fatigue code cases are documented in this report.

  16. FARO base case post-test analysis by COMETA code

    Energy Technology Data Exchange (ETDEWEB)

    Annunziato, A.; Addabbo, C. [Joint Research Centre, Ispra (Italy)

    1995-09-01

    The paper analyzes the COMETA (Core Melt Thermal-Hydraulic Analysis) post test calculations of FARO Test L-11, the so-called Base Case Test. The FARO Facility, located at JRC Ispra, is used to simulate the consequences of Severe Accidents in Nuclear Power Plants under a variety of conditions. The COMETA Code has a 6 equations two phase flow field and a 3 phases corium field: the jet, the droplets and the fused-debris bed. The analysis shown that the code is able to pick-up all the major phenomena occurring during the fuel-coolant interaction pre-mixing phase.

  17. ASME Material Challenges for Advanced Reactor Concepts

    Energy Technology Data Exchange (ETDEWEB)

    Piyush Sabharwall; Ali Siahpush

    2013-07-01

    This study presents the material Challenges associated with Advanced Reactor Concept (ARC) such as the Advanced High Temperature Reactor (AHTR). ACR are the next generation concepts focusing on power production and providing thermal energy for industrial applications. The efficient transfer of energy for industrial applications depends on the ability to incorporate cost-effective heat exchangers between the nuclear heat transport system and industrial process heat transport system. The heat exchanger required for AHTR is subjected to a unique set of conditions that bring with them several design challenges not encountered in standard heat exchangers. The corrosive molten salts, especially at higher temperatures, require materials throughout the system to avoid corrosion, and adverse high-temperature effects such as creep. Given the very high steam generator pressure of the supercritical steam cycle, it is anticipated that water tube and molten salt shell steam generators heat exchanger will be used. In this paper, the ASME Section III and the American Society of Mechanical Engineers (ASME) Section VIII requirements (acceptance criteria) are discussed. Also, the ASME material acceptance criteria (ASME Section II, Part D) for high temperature environment are presented. Finally, lack of ASME acceptance criteria for thermal design and analysis are discussed.

  18. Activated sludge model No. 2d, ASM2d

    DEFF Research Database (Denmark)

    Henze, M.

    1999-01-01

    The Activated Sludge Model No. 2d (ASM2d) presents a model for biological phosphorus removal with simultaneous nitrification-denitrification in activated sludge systems. ASM2d is based on ASM2 and is expanded to include the denitrifying activity of the phosphorus accumulating organisms (PAOs...

  19. Radiation-induced temperature shift of thhe ASME KIc curve

    International Nuclear Information System (INIS)

    The objective of this study was to determine the effects of neutron irradiation on the temperature shift and shape of the KIc curve described in Sect. XI of the ASME Boiler and pressure Vessel Code. Two submerged-arc welds with copper contents of 0.23 and 0.31 wt % were commercially fabricated in 215-mm-thick plate. Charpy impact, tensile, dropweight, and compact specimens up to 203.2 mm thick were fabricated and tested to provide a large data for unirradiated material. Similar specimens with compacts up to 101.6 mm thick, irradiated at about 288 degree C to a mean fluence of about 1.6 times 1019 neutrons/cm2 in the Oak Ridge Research Reactor, were tested to provide a similarly large data base with which to evaluate the temperature shift and shape of the ASME KIc curves. Testing was performed by both Oak Ridge National Laboratory and Materials Engineering Associates. Both linear-elastic and elastic-plastic fracture mechanics techniques were used to analyze test results. 3 refs., 4 figs., 1 tab

  20. Current Activities of the ASME Subgroup NUPACK

    Energy Technology Data Exchange (ETDEWEB)

    Gerald M. Foster; D. Keith Morton; Paul McConnell

    2007-10-01

    Current activities of the American Society of Mechanical Engineers (ASME), Section III Subgroup on Containment Systems for Spent Fuel High-Level Waste Transport Packagings (also known as Subgroup NUPACK) are reviewed with emphasis on the recent revision of Subsection WB. Also, brief insightson new proposals for the development of rules for internal support structures and for a strain-based acceptance criteria are provided.

  1. ASME AG-1 Section FC Qualified HEPA Filters; a Particle Loading Comparison - 13435

    Energy Technology Data Exchange (ETDEWEB)

    Stillo, Andrew [Camfil Farr, 1 North Corporate Drive, Riverdale, NJ 07457 (United States); Ricketts, Craig I. [New Mexico State University, Department of Engineering Technology and Surveying Engineering, P.O. Box 30001 MSC 3566, Las Cruces, NM 88003-8001 (United States)

    2013-07-01

    High Efficiency Particulate Air (HEPA) Filters used to protect personnel, the public and the environment from airborne radioactive materials are designed, manufactured and qualified in accordance with ASME AG-1 Code section FC (HEPA Filters) [1]. The qualification process requires that filters manufactured in accordance with this ASME AG-1 code section must meet several performance requirements. These requirements include performance specifications for resistance to airflow, aerosol penetration, resistance to rough handling, resistance to pressure (includes high humidity and water droplet exposure), resistance to heated air, spot flame resistance and a visual/dimensional inspection. None of these requirements evaluate the particle loading capacity of a HEPA filter design. Concerns, over the particle loading capacity, of the different designs included within the ASME AG-1 section FC code[1], have been voiced in the recent past. Additionally, the ability of a filter to maintain its integrity, if subjected to severe operating conditions such as elevated relative humidity, fog conditions or elevated temperature, after loading in use over long service intervals is also a major concern. Although currently qualified HEPA filter media are likely to have similar loading characteristics when evaluated independently, filter pleat geometry can have a significant impact on the in-situ particle loading capacity of filter packs. Aerosol particle characteristics, such as size and composition, may also have a significant impact on filter loading capacity. Test results comparing filter loading capacities for three different aerosol particles and three different filter pack configurations are reviewed. The information presented represents an empirical performance comparison among the filter designs tested. The results may serve as a basis for further discussion toward the possible development of a particle loading test to be included in the qualification requirements of ASME AG-1

  2. Exploring Trilingual Code-Switching: The Case of "Hokaglish"

    Science.gov (United States)

    Gonzales, Wilkinson Daniel Wong

    2016-01-01

    This paper presents findings of an initial study on a trilingual code-switching (CS) phenomenon called "Hokaglish" in Binondo, Manila, The Philippines. Beginning with descriptions of multiculturalism and multilingualism in the Philippines, the discussion eventually leads to the description and survey of the code-switching phenomenon…

  3. Comparison of materials according ASME, EN and ISO and their applicability

    Energy Technology Data Exchange (ETDEWEB)

    Hocke, A. [AG der Dillinger Huettenwerke, Dillingen (Germany); Marrek, K.H. [TUeV NORD Systems GmbH und Co. KG, Hamburg (Germany)

    2007-07-01

    Numerous materials for pressure equipment according harmonized EN-standards differ in their standard requirements profile from comparable materials according ASTM/ASME. These differences concern, among the qualification demands on the material manufacturer, many detailed provisions within the chemical composition, the mechanical-technological properties, the design values, the requirements on heat treatment, the instructions on post weld heat treatment, the materials testing (e.g. type, frequency). The use of EN-materials within the ASME-Codes is limited and without any practical interest. ASME-materials can be used according PED but only with a particular material appraisal acc. to PED. Efforts to create a common basis for materials (on ISO-level) in order to overcome trade barriers are in progress, but in consideration of the different philosophies in standardization between USA and Europe results are far away. It is recommended to avoid an arbitrarily mixing of material standards and construction codes. If this is not possible, the particular conditions / requirements for materials and material manufacturer of the design code must be considered imperatively. (orig.)

  4. Test Case Prioritization Algorithm Based Upon Modified Code Coverage in Regression Testing

    Directory of Open Access Journals (Sweden)

    Usha Badhera

    2012-12-01

    Full Text Available Test case prioritization involves scheduling test cases so that performance of regression testing can beimproved. To re execute all test cases after every modification in the code is an inefficient process. Atechnique is to execute the modified lines of code with minimum number of test cases. The proposed testcase prioritization technique organizes the test case in a test suite in an ordering such that fewer lines ofcode need to be re executed thus faster code coverage is attained which would lead to early detection offaults.

  5. Employee perceptions of code of conduct content, purpose and implementation: a case study

    OpenAIRE

    Karhujoki, Helena

    2013-01-01

    Objective of the study The objective of the study was to determine how employees of the case company perceive and understand the purpose and content of the company's updated code of conduct, and how they experienced the code of conduct implementation. The final objective was to help the case organization to identify what measures should be taken in order to ensure the vitality of the code of conduct also in the future, and to further improve the ethical and compliant corporate culture. ...

  6. Evaluating QR Code Case Studies Using a Mobile Learning Framework

    Science.gov (United States)

    Rikala, Jenni

    2014-01-01

    The aim of this study was to evaluate the feasibility of Quick Response (QR) codes and mobile devices in the context of Finnish basic education. The feasibility was analyzed through a mobile learning framework, which includes the core characteristics of mobile learning. The study is part of a larger research where the aim is to develop a…

  7. Engineering students catch top prizes at ASME competition

    OpenAIRE

    Crumbley, Liz

    2006-01-01

    The Virginia Tech chapter of the American Society of Mechanical Engineers (ASME) carried away several top awards - including one for the design of a fishing apparatus for a quadriplegic - during the recent ASME District F student conference hosted by the University of Tennessee.

  8. Letter Position Coding Across Modalities: The Case of Braille Readers

    Science.gov (United States)

    Perea, Manuel; García-Chamorro, Cristina; Martín-Suesta, Miguel; Gómez, Pablo

    2012-01-01

    Background The question of how the brain encodes letter position in written words has attracted increasing attention in recent years. A number of models have recently been proposed to accommodate the fact that transposed-letter stimuli like jugde or caniso are perceptually very close to their base words. Methodology Here we examined how letter position coding is attained in the tactile modality via Braille reading. The idea is that Braille word recognition may provide more serial processing than the visual modality, and this may produce differences in the input coding schemes employed to encode letters in written words. To that end, we conducted a lexical decision experiment with adult Braille readers in which the pseudowords were created by transposing/replacing two letters. Principal Findings We found a word-frequency effect for words. In addition, unlike parallel experiments in the visual modality, we failed to find any clear signs of transposed-letter confusability effects. This dissociation highlights the differences between modalities. Conclusions The present data argue against models of letter position coding that assume that transposed-letter effects (in the visual modality) occur at a relatively late, abstract locus. PMID:23071522

  9. Letter position coding across modalities: the case of Braille readers.

    Directory of Open Access Journals (Sweden)

    Manuel Perea

    Full Text Available BACKGROUND: The question of how the brain encodes letter position in written words has attracted increasing attention in recent years. A number of models have recently been proposed to accommodate the fact that transposed-letter stimuli like jugde or caniso are perceptually very close to their base words. METHODOLOGY: Here we examined how letter position coding is attained in the tactile modality via Braille reading. The idea is that Braille word recognition may provide more serial processing than the visual modality, and this may produce differences in the input coding schemes employed to encode letters in written words. To that end, we conducted a lexical decision experiment with adult Braille readers in which the pseudowords were created by transposing/replacing two letters. PRINCIPAL FINDINGS: We found a word-frequency effect for words. In addition, unlike parallel experiments in the visual modality, we failed to find any clear signs of transposed-letter confusability effects. This dissociation highlights the differences between modalities. CONCLUSIONS: The present data argue against models of letter position coding that assume that transposed-letter effects (in the visual modality occur at a relatively late, abstract locus.

  10. Case Studies and Codes of Ethics: The Relevance of the ACS Experience to ALIA

    Science.gov (United States)

    Ferguson, Stuart; Salmond, Rachel; Al-Saggaf, Yeslam; Bowern, Mike; Weckert, John

    2005-01-01

    This paper comments on a recent "Code of Ethics" project conducted on behalf of the Australian Computer Society, and proposes a similar project for the Australian Library and Information Association (ALIA). It reviews the scope and methodology of the project, which developed a comprehensive set of case studies and related them to the ACS "Code of…

  11. Deriving Safety Cases for the Formal Safety Certification of Automatically Generated Code

    OpenAIRE

    Basir, Nurlida; Denney, Ewen; Fischer, Bernd

    2008-01-01

    We present an approach to systematically derive safety cases for automatically generated code from information collected during a formal, Hoare-style safety certification of the code. This safety case makes explicit the formal and informal reasoning principles, and reveals the top-level assumptions and external dependencies that must be taken into account; however, the evidence still comes from the formal safety proofs. It uses a generic goal-based argument that is instantiated with respect t...

  12. A Case for Dynamic Reverse-code Generation to Debug Non-deterministic Programs

    Directory of Open Access Journals (Sweden)

    Jooyong Yi

    2013-09-01

    Full Text Available Backtracking (i.e., reverse execution helps the user of a debugger to naturally think backwards along the execution path of a program, and thinking backwards makes it easy to locate the origin of a bug. So far backtracking has been implemented mostly by state saving or by checkpointing. These implementations, however, inherently do not scale. Meanwhile, a more recent backtracking method based on reverse-code generation seems promising because executing reverse code can restore the previous states of a program without state saving. In the literature, there can be found two methods that generate reverse code: (a static reverse-code generation that pre-generates reverse code through static analysis before starting a debugging session, and (b dynamic reverse-code generation that generates reverse code by applying dynamic analysis on the fly during a debugging session. In particular, we espoused the latter one in our previous work to accommodate non-determinism of a program caused by e.g., multi-threading. To demonstrate the usefulness of our dynamic reverse-code generation, this article presents a case study of various backtracking methods including ours. We compare the memory usage of various backtracking methods in a simple but nontrivial example, a bounded-buffer program. In the case of non-deterministic programs such as this bounded-buffer program, our dynamic reverse-code generation outperforms the existing backtracking methods in terms of memory efficiency.

  13. Distributed Successive Approximation Coding using Broadcast Advantage: The Two-Encoder Case

    CERN Document Server

    Chen, Zichong; Vetterli, Martin

    2010-01-01

    Traditional distributed source coding rarely considers the possible link between separate encoders. However, the broadcast nature of wireless communication in sensor networks provides a free gossip mechanism which can be used to simplify encoding/decoding and reduce transmission power. Using this broadcast advantage, we present a new two-encoder scheme which imitates the ping-pong game and has a successive approximation structure. For the quadratic Gaussian case, we prove that this scheme is successively refinable on the {sum-rate, distortion pair} surface, which is characterized by the rate-distortion region of the distributed two-encoder source coding. A potential energy saving over conventional distributed coding is also illustrated. This ping-pong distributed coding idea can be extended to the multiple encoder case and provides the theoretical foundation for a new class of distributed image coding method in wireless scenarios.

  14. Industrial process heat case studies. [PROSYS/ECONMAT code

    Energy Technology Data Exchange (ETDEWEB)

    Hooker, D.W.; May, E.K.; West, R.E.

    1980-05-01

    Commercially available solar collectors have the potential to provide a large fraction of the energy consumed for industrial process heat (IPH). Detailed case studies of individual industrial plants are required in order to make an accurate assessment of the technical and economic feasibility of applications. This report documents the results of seven such case studies. The objectives of the case study program are to determine the near-term feasibility of solar IPH in selected industries, identify energy conservation measures, identify conditions of IPH systems that affect solar applications, test SERI's IPH analysis software (PROSYS/ECONOMAT), disseminate information to the industrial community, and provide inputs to the SERI research program. The detailed results from the case studies are presented. Although few near-term, economical solar applications were found, the conditions that would enhance the opportunities for solar IPH applications are identified.

  15. Code Coverage Based Test Case Selection and Prioritization

    Directory of Open Access Journals (Sweden)

    R.Beena

    2013-11-01

    Full Text Available Regression Testing is exclusively executed to guarantee the desirable functionality of existing softwareafter pursuing quite a few amendments or variations in it. Perhaps, it testifies the quality of the modifiedsoftware by concealing the regressions orsoftware bugs in both functional and non-functional applicationsof the system. In fact, the maintenance of test suite is enormous as it necessitates a big investment of timeand money on test cases on a large scale. So, minimizing the test suite becomesthe indispensable requisiteto lessen the budget on regression testing. Precisely, this research paper aspires to present an innovativeapproach for the effectiveselection and prioritization of test cases which in return may procure a maximumcode average.

  16. Application of adjusted subpixel method (ASM) in HRCT measurements of the bronchi in bronchial asthma patients and healthy individuals

    International Nuclear Information System (INIS)

    Background: Recently, we described a model system which included corrections of high-resolution computed tomography (HRCT) bronchial measurements based on the adjusted subpixel method (ASM). Objective: To verify the clinical application of ASM by comparing bronchial measurements obtained by means of the traditional eye-driven method, subpixel method alone and ASM in a group comprised of bronchial asthma patients and healthy individuals. Methods: The study included 30 bronchial asthma patients and the control group comprised of 20 volunteers with no symptoms of asthma. The lowest internal and external diameters of the bronchial cross-sections (ID and ED) and their derivative parameters were determined in HRCT scans using: (1) traditional eye-driven method, (2) subpixel technique, and (3) ASM. Results: In the case of the eye-driven method, lower ID values along with lower bronchial lumen area and its percentage ratio to total bronchial area were basic parameters that differed between asthma patients and healthy controls. In the case of the subpixel method and ASM, both groups were not significantly different in terms of ID. Significant differences were observed in values of ED and total bronchial area with both parameters being significantly higher in asthma patients. Compared to ASM, the eye-driven method overstated the values of ID and ED by about 30% and 10% respectively, while understating bronchial wall thickness by about 18%. Conclusions: Results obtained in this study suggest that the traditional eye-driven method of HRCT-based measurement of bronchial tree components probably overstates the degree of bronchial patency in asthma patients.

  17. Ethical codes for training staff in South African collieries : a case study / F.W. Kemp

    OpenAIRE

    Kemp, Frederick Willem

    2009-01-01

    The title of the research is "Ethical codes for training staff in South African Collieries -a case study". The research was conducted in coal mining training centres in the Free State, Gauteng and the Mpumulanga provinces of South Africa. The objective of the research was to examine ethical codes currently in place internationally and locally. Based on this research the research was then focused on its contribution to the human resource development arena. South African coal mining train...

  18. Comparison between the American and German code for power boilers

    International Nuclear Information System (INIS)

    Both are homogeneous and integral systems which describe the requirements for design, manufacturing and recurrent inspections of steam boilers. Both are internationally recognised but are of course, geared to different industrial developments and policies of their countries of origin. In the case of design requirements for boiler drums TRD demands 40% less minimum wall thickness than the ASME code. With this difference in wall thickness the same level of safety, however can only be achieved if all the differences of the two regulations are considered and applied down to the very last detail. (orig.)

  19. Systematic review of validated case definitions for diabetes in ICD-9-coded and ICD-10-coded data in adult populations

    Science.gov (United States)

    Khokhar, Bushra; Jette, Nathalie; Metcalfe, Amy; Cunningham, Ceara Tess; Kaplan, Gilaad G; Butalia, Sonia; Rabi, Doreen

    2016-01-01

    Objectives With steady increases in ‘big data’ and data analytics over the past two decades, administrative health databases have become more accessible and are now used regularly for diabetes surveillance. The objective of this study is to systematically review validated International Classification of Diseases (ICD)-based case definitions for diabetes in the adult population. Setting, participants and outcome measures Electronic databases, MEDLINE and Embase, were searched for validation studies where an administrative case definition (using ICD codes) for diabetes in adults was validated against a reference and statistical measures of the performance reported. Results The search yielded 2895 abstracts, and of the 193 potentially relevant studies, 16 met criteria. Diabetes definition for adults varied by data source, including physician claims (sensitivity ranged from 26.9% to 97%, specificity ranged from 94.3% to 99.4%, positive predictive value (PPV) ranged from 71.4% to 96.2%, negative predictive value (NPV) ranged from 95% to 99.6% and κ ranged from 0.8 to 0.9), hospital discharge data (sensitivity ranged from 59.1% to 92.6%, specificity ranged from 95.5% to 99%, PPV ranged from 62.5% to 96%, NPV ranged from 90.8% to 99% and κ ranged from 0.6 to 0.9) and a combination of both (sensitivity ranged from 57% to 95.6%, specificity ranged from 88% to 98.5%, PPV ranged from 54% to 80%, NPV ranged from 98% to 99.6% and κ ranged from 0.7 to 0.8). Conclusions Overall, administrative health databases are useful for undertaking diabetes surveillance, but an awareness of the variation in performance being affected by case definition is essential. The performance characteristics of these case definitions depend on the variations in the definition of primary diagnosis in ICD-coded discharge data and/or the methodology adopted by the healthcare facility to extract information from patient records. PMID:27496226

  20. Input and Output in Code Switching: A Case Study of a Japanese-Chinese Bilingual Infant

    Science.gov (United States)

    Meng, Hairong; Miyamoto, Tadao

    2012-01-01

    Code switching (CS) (or language mixing) generally takes place in bilingual children's utterances, even if their parents adhere to the "one parent-one language" principle. The present case study of a Japanese-Chinese bilingual infant provides both quantitative and qualitative analyses on the impact of input on output, as manifested in CS. The…

  1. Buccal health in asthmatic patients. Salud bucal en pacientes asmáticos.

    Directory of Open Access Journals (Sweden)

    Joel González Beriao

    2003-05-01

    Full Text Available Background: Buccal health as integral and determinant part of general health makes us find different ways and methods to elevate life quality in the population. Objective: To establish the risk of suffering from dental cavities in asthmatic patients. Methods: A non match case and control study constituted by 100 children selected at simple random from the universe of asthmatic patients belonging to the General Comprehensive doctor offices number 7,9,10, 11, 43, and 44 from Area II in Cienfuegos municipality. The controlled group was selected in the same offices but from the universe of non asthmatic children. The age in both groups was from 6 to 15 years old. Visits to the children´s home were carried out for the record of the information through health oral dental and buccal health knowledge surveys. Results: The index of cavities, lost, and obturated permanent teeth was higher (3, 28 than in the control group (0, 44. The buccal hygiene indexes and the level of knowledge in both groups did not show significant differences. The most used drugs in asthma therapy were salbutamol and ketotifeno which change the buccal milieu. The odds ratio technique between asthmatic and non asthmatic patients showed 4, 9 times more at risk of suffering from dental cavities in the first group. Finally, it can be stated that the asthmatic patients are more at risk of suffering from cavities than the non asthmatic ones, so a program for buccal health in these patients should be performed.

    Fundamento: La salud bucal como parte integrante y determinante de la salud general del hombre, nos obliga cada vez con mayor rigor y nivel científico a la búsqueda de diferentes vías y métodos para elevar la calidad de vida de la población. Objetivo: Establecer el riesgo de padecer caries dental de los pacientes asmáticos. Métodos: Estudio de casos y

  2. Structuring and coding in health care records: a qualitative analysis using diabetes as a case study

    Directory of Open Access Journals (Sweden)

    Ann R R Robertson

    2015-03-01

    Full Text Available Background   Globally, diabetes mellitus presents a substantial burden to individuals and healthcare systems. Structuring and/or coding of medical records underpin attempts to improve information sharing and searching, potentially bringing clinical and secondary uses benefits.Aims and objectives   We investigated if, how and why records for adults with diabetes were structured and/or coded, and explored stakeholders’ perceptions of current practice.Methods   We carried out a qualitative, theoretically-informed case study of documenting healthcare information for diabetes patients in family practice and hospital settings, using semi-structured interviews, observations, systems demonstrations and documentary data.Results   We conducted 22 interviews and four on-site observations, and reviewed 25 documents. For secondary uses – research, audit, public health and service planning – the benefits of highly structured and coded diabetes data were clearly articulated. Reported clinical benefits in terms of managing and monitoring diabetes, and perhaps encouraging patient self-management, were modest. We observed marked differences in levels of record structuring and/or coding between settings, and found little evidence that these data were being exploited to improve information sharing between them.Conclusions   Using high levels of data structuring and coding in medical records for diabetes patients has potential to be exploited more fully, and lessons might be learned from successful developments elsewhere in the UK.

  3. Classifying Obstructive and Nonobstructive Code Clones of Type I Using Simplified Classification Scheme: A Case Study

    Directory of Open Access Journals (Sweden)

    Miroslaw Staron

    2015-01-01

    Full Text Available Code cloning is a part of many commercial and open source development products. Multiple methods for detecting code clones have been developed and finding the clones is often used in modern quality assurance tools in industry. There is no consensus whether the detected clones are negative for the product and therefore the detected clones are often left unmanaged in the product code base. In this paper we investigate how obstructive code clones of Type I (duplicated exact code fragments are in large software systems from the perspective of the quality of the product after the release. We conduct a case study at Ericsson and three of its large products, which handle mobile data traffic. We show how to use automated analogy-based classification to decrease the classification effort required to determine whether a clone pair should be refactored or remain untouched. The automated method allows classifying 96% of Type I clones (both algorithms and data declarations leaving the remaining 4% for the manual classification. The results show that cloning is common in the studied commercial software, but that only 1% of these clones are potentially obstructive and can jeopardize the quality of the product if left unmanaged.

  4. $\\gamma$-ray Burst Positions from the ASM on RXTE

    CERN Document Server

    Bradt, H V; Bradt, Hale V.; Smith, Donald A.

    1999-01-01

    The RXTE/ASM has detected and positioned 14 confirmed GRB bursts (at this writing, Jan. 1999) including six whose positions were comunicated to the community 2 to 32 hours after the burst. Two of these latter bursts led to measurements of optical red shifts but one, despite an easily detected x-ray afterglow, produced no detectable optical or radio afterglow.

  5. A strategy for implementation of experience based seismic equipment qualification in IEEE and ASME industry standards

    International Nuclear Information System (INIS)

    In the past 20 years, extensive data on the performance of mechanical and electric equipment during actual strong motion earthquakes and seismic qualification tests has been accumulated. Recognizing that an experience based approach provides a technically sound and cost effective method for the seismic qualification of some or certain equipment, the IEEE Nuclear Power Engineering Committee and the ASME Committee on Qualification of Mechanical Equipment established a Special Working Group to investigate the incorporation of experienced based methods into the industry consensus codes and standards currently used in the seismic qualification of Seismic Category Nuclear Power Plant equipment. This paper presents the strategy (course of action) which was developed by the Special Working Group for meeting this objective of incorporation of experience based seismic qualification standards used in the design and seismic qualification of seismic category nuclear power plant equipment. This strategy was recommended to both chartering organizations, the IEEE Nuclear Power Engineering Committee and the ASME Committee on Qualification of Mechanical Equipment for their consideration and implementation. The status of the review and implementation of the Special Working Group's recommended strategy by the sponsoring organization is also discussed

  6. Radiant Energy Measurements from a Scaled Jet Engine Axisymmetric Exhaust Nozzle for a Baseline Code Validation Case

    Science.gov (United States)

    Baumeister, Joseph F.

    1994-01-01

    A non-flowing, electrically heated test rig was developed to verify computer codes that calculate radiant energy propagation from nozzle geometries that represent aircraft propulsion nozzle systems. Since there are a variety of analysis tools used to evaluate thermal radiation propagation from partially enclosed nozzle surfaces, an experimental benchmark test case was developed for code comparison. This paper briefly describes the nozzle test rig and the developed analytical nozzle geometry used to compare the experimental and predicted thermal radiation results. A major objective of this effort was to make available the experimental results and the analytical model in a format to facilitate conversion to existing computer code formats. For code validation purposes this nozzle geometry represents one validation case for one set of analysis conditions. Since each computer code has advantages and disadvantages based on scope, requirements, and desired accuracy, the usefulness of this single nozzle baseline validation case can be limited for some code comparisons.

  7. Code for ethical international recruitment practices: the CGFNS alliance case study.

    Science.gov (United States)

    Shaffer, Franklin A; Bakhshi, Mukul; Dutka, Julia To; Phillips, Janice

    2016-01-01

    Projections indicate a global workforce shortage of approximately 4.3 million across the health professions. The need to ensure an adequate supply of health workers worldwide has created a context for the increased global migration of these professionals. The global trend in the migration of health professionals has given rise to the international recruitment industry to facilitate the passage of health workers from source to destination countries. This is particularly the case in the United States, where the majority of immigrant health professionals have come by way of the recruiting industry. This industry is largely unregulated in the United States as well as in many other countries, for which voluntary codes have been used as a means to increase transparency of the recruitment process, shape professional conduct, and mitigate harm to foreign-educated health workers. The CGFNS Alliance case study presented herein describes a multi-stakeholder effort in the United States to promote ethical recruitment practices. Such codes not only complement the WHO Global Code of Practice but are necessary to maximize the impact of these global standards on local settings. This case study offers both a historical perspective and a conceptual framework for examining the multiplicity of factors affecting the migration of human resources for health. The lessons learned provide critical insights into the factors pertaining to the relevancy and effectiveness of the WHO Code from the perspectives of both source and destination countries. This study provides a conceptual model for examining the usefulness of the WHO Code as well as how best to ensure its viability, sustainability, relevancy, and effectiveness in the global environment. This case study concludes with recommendations for evolving business models that need to be in place to strengthen the effectiveness of the WHO Code in the marketplace and to ensure its impact on the international recruitment industry in advancing

  8. Data Mining for Secure Software Engineering – Source Code Management Tool Case Study

    Directory of Open Access Journals (Sweden)

    A.V.Krishna Prasad,

    2010-07-01

    Full Text Available As Data Mining for Secure Software Engineering improves software productivity and quality, software engineers are increasingly applying data mining algorithms to various software engineering tasks. However mining software engineering data poses several challenges, requiring various algorithms to effectively mine sequences, graphs and text from such data. Software engineering data includes code bases, execution traces, historical code changes,mailing lists and bug data bases. They contains a wealth of information about a projects-status, progress and evolution. Using well established data mining techniques, practitioners and researchers can explore the potential of this valuable data in order to better manage their projects and do produce higher-quality software systems that are delivered on time and with in budget. Data mining can be used in gathering and extracting latent security requirements, extracting algorithms and business rules from code, mining legacy applications for requirements and business rules for new projects etc. Mining algorithms for software engineering falls into four main categories: Frequent pattern mining – finding commonly occurring patterns; Pattern matching – finding data instances for given patterns; Clustering – grouping data into clusters and Classification – predicting labels of data based on already labeled data. In this paper, we will discuss the overview of strategies for data mining for secure software engineering, with the implementation of a case study of text mining for source code management tool.

  9. ASME Evaluation on Grid Mobile E-Commerce Process

    OpenAIRE

    Dan Chang; Wei Liao

    2012-01-01

    With the development of E-commerce, more scholars have paid attention to research on Mobile E-commerce and mostly focus on the optimization and evaluation of existing process. This paper researches the evaluation of Mobile E-commerce process with a method called ASME. Based on combing and analyzing current mobile business process and utilizing the grid management theory, mobile business process based on grid are constructed. Firstly, the existing process, namely Non-grid Mobile E-commerce, an...

  10. Trends in EFL Technology and Educational Coding: A Case Study of an Evaluation Application Developed on LiveCode

    Science.gov (United States)

    Uehara, Suwako; Noriega, Edgar Josafat Martinez

    2016-01-01

    The availability of user-friendly coding software is increasing, yet teachers might hesitate to use this technology to develop for educational needs. This paper discusses studies related to technology for educational uses and introduces an evaluation application being developed. Through questionnaires by student users and open-ended discussion by…

  11. Automated Source Code Analysis to Identify and Remove Software Security Vulnerabilities: Case Studies on Java Programs

    Directory of Open Access Journals (Sweden)

    Natarajan Meghanathan

    2013-01-01

    Full Text Available The high-level contribution of this paper is to illustrate the development of generic solution strategies to remove software security vulnerabilities that could be identified using automated tools for source code analysis on software programs (developed in Java. We use the Source Code Analyzer and Audit Workbench automated tools, developed by HP Fortify Inc., for our testing purposes. We present case studies involving a file writer program embedded with features for password validation, and connection-oriented server socket programs to discover, analyze the impact and remove the following software security vulnerabilities: (i Hardcoded Password, (ii Empty Password Initialization, (iii Denial of Service, (iv System Information Leak, (v Unreleased Resource, (vi Path Manipulation, and (vii Resource Injection vulnerabilities. For each of these vulnerabilities, we describe the potential risks associated with leaving them unattended in a software program, and provide the solutions (including the code snippets in Java that can be incorporated to remove these vulnerabilities. The proposed solutions are very generic in nature, and can be suitably modified to correct any such vulnerabilities in software developed in any other programming language.

  12. What do European veterinary codes of conduct actually say and mean? A case study approach.

    Science.gov (United States)

    Magalhães-Sant'Ana, M; More, S J; Morton, D B; Osborne, M; Hanlon, A

    2015-06-20

    Codes of Professional Conduct (CPCs) are pivotal instruments of self-regulation, providing the standards to which veterinarians should, and sometimes must, comply. Despite their importance to the training and guidance of veterinary professionals, research is lacking on the scope and emphasis of the requirements set out in veterinary CPCs. This paper provides the first systematic investigation of veterinary CPCs. It relies on a case study approach, combining content and thematic analyses of five purposively selected European CPCs: Federation of Veterinarians of Europe (FVE), Denmark, Ireland, Portugal and the UK. Eight overarching themes were identified, including 'definitions and framing concepts', 'duties to animals', 'duties to clients', 'duties to other professionals', 'duties to competent authorities', 'duties to society', 'professionalism' and 'practice-related issues'. Some differences were observed, which may be indicative of different approaches to the regulation of the veterinary profession in Europe (which is reflected in having a 'code of ethics' or a 'code of conduct'), cultural differences on the status of animals in society, and regulatory bodies' proactivity in adapting to professional needs and to societal changes regarding the status of animals. These findings will contribute to an improved understanding of the roles of CPCs in regulating the veterinary profession in Europe. PMID:25861823

  13. Strategies for incorporating nouns and verbs in code-mixing: the case of Pashto-English bilingual speech

    OpenAIRE

    Ali Khan, Arshad; Muysken, Pieter

    2016-01-01

    A recurring issue in the analysis of code-mixed speech concerns the strategies for incorporating nouns and verbs. How can nouns and verbs from one language be felicitously incorporated into sentences from another language? This paper analyses this question with a case study of English-Pashto bilingual speech. English nouns appear in determiner phrases marked with Pashto case endings, and English verbs have an associated light verb with Pashto inflections. Code-mixing and lexical borrowing hav...

  14. Statistical re-evaluation of the ASME K{sub IC} and K{sub IR} fracture toughness reference curves

    Energy Technology Data Exchange (ETDEWEB)

    Wallin, K.; Rintamaa, R. [Valtion Teknillinen Tutkimuskeskus, Espoo (Finland)

    1998-11-01

    Historically the ASME reference curves have been treated as representing absolute deterministic lower bound curves of fracture toughness. In reality, this is not the case. They represent only deterministic lower bound curves to a specific set of data, which represent a certain probability range. A recently developed statistical lower bound estimation method called the `Master curve`, has been proposed as a candidate for a new lower bound reference curve concept. From a regulatory point of view, the Master curve is somewhat problematic in that it does not claim to be an absolute deterministic lower bound, but corresponds to a specific theoretical failure probability that can be chosen freely based on application. In order to be able to substitute the old ASME reference curves with lower bound curves based on the master curve concept, the inherent statistical nature (and confidence level) of the ASME reference curves must be revealed. In order to estimate the true inherent level of safety, represented by the reference curves, the original data base was re-evaluated with statistical methods and compared to an analysis based on the master curve concept. The analysis reveals that the 5% lower bound Master curve has the same inherent degree of safety as originally intended for the K{sub IC}-reference curve. Similarly, the 1% lower bound Master curve corresponds to the K{sub IR}-reference curve. (orig.)

  15. Recovering Use Case Diagrams from Object Oriented Code: an MDA-based Approach

    Directory of Open Access Journals (Sweden)

    Claudia T. Pereira

    2012-07-01

    Full Text Available Modernization of legacy systems requires the existence of technical frameworks for information integration and tool interoperability that allow managing new platform technologies, design techniques and processes. MDA (Model Driven Architecture, adopted by the OMG (Object Management Group, is aligned with this requirement. Reverse engineering techniques play a crucial role in system modernization. In light of these issues, this article describes a framework to reverse engineering MDA models from object oriented code. This framework distinguishes three different abstraction levels linked to models, metamodels and formal specifications. At model level, transformations are based on static and dynamic analysis. At metamodel level, transformations are specified as OCL (Object Constraint Language contracts between MOF (Meta Object Facility metamodels which control the consistency of these transformations. The level of formal specification includes algebraic specifications of MOF metamodels and metamodel-based transformations. This article shows how to reverse engineering use case diagrams from Java code in the MDA context focusing on transformations at model and metamodel levels. We validate our approach by using Eclipse Modeling Framework, Ecore metamodels and ATL (Atlas Transformation Language.

  16. Coding Partitions

    Directory of Open Access Journals (Sweden)

    Fabio Burderi

    2007-05-01

    Full Text Available Motivated by the study of decipherability conditions for codes weaker than Unique Decipherability (UD, we introduce the notion of coding partition. Such a notion generalizes that of UD code and, for codes that are not UD, allows to recover the ``unique decipherability" at the level of the classes of the partition. By tacking into account the natural order between the partitions, we define the characteristic partition of a code X as the finest coding partition of X. This leads to introduce the canonical decomposition of a code in at most one unambiguouscomponent and other (if any totally ambiguouscomponents. In the case the code is finite, we give an algorithm for computing its canonical partition. This, in particular, allows to decide whether a given partition of a finite code X is a coding partition. This last problem is then approached in the case the code is a rational set. We prove its decidability under the hypothesis that the partition contains a finite number of classes and each class is a rational set. Moreover we conjecture that the canonical partition satisfies such a hypothesis. Finally we consider also some relationships between coding partitions and varieties of codes.

  17. Parallelism to solute transport code MT3DMS and case study in TU. Freiberg

    Science.gov (United States)

    Abdelaziz, Ramadan; Leb, Hai Ha

    2014-05-01

    A parallel software for 3-D Multi-Species Transport Model MT3DMS was developed. Open Multiprocessing (OpenMP) was used for communication within the processors. MT3DMS emulated the solute transport by dividing the calculation into flow and transport steps. A new preconditioner, derived from Symmetric Successive Over Relaxation (SSOR), is added into the generalized conjugate gradient solver. A case study in the test field at TU Bergakademie Freiberg was used to produce the results and analyze the code performance. A demonstration test field indicated that the parallel mode for MT3DMS is accessible within a processor and problem size. A low timeframe occurs due to speedups for the field test of the solute transport model.

  18. Overcoming Barriers to the Implementation of a Pharmacy Bar Code Scanning System for Medication Dispensing: A Case Study

    OpenAIRE

    Nanji, Karen C.; Cina, Jennifer; Patel, Nirali; Churchill, William; Gandhi, Tejal K.; Poon, Eric G.

    2009-01-01

    Technology has great potential to reduce medication errors in hospitals. This case report describes barriers to, and facilitators of, the implementation of a pharmacy bar code scanning system to reduce medication dispensing errors at a large academic medical center. Ten pharmacy staff were interviewed about their experiences during the implementation. Interview notes were iteratively reviewed to identify common themes. The authors identified three main barriers to pharmacy bar code scanning s...

  19. The Bilingual Personality as a Metasystem--The Case of Code Switching.

    Science.gov (United States)

    Titone, Renzoo

    1987-01-01

    Suggests that code-switching is not only a neurolinguistic process but also a psychological phenomenon with substantial reference to personality structure and dynamics. The bilingual's personality as a "code-switcher" is tentatively defined. (Author/CB)

  20. Solutions to HYDROCOIN [Hydrologic Code Intercomparison] Level 1 problems using STOKES and PARTICLE (Cases 1,2,4,7)

    International Nuclear Information System (INIS)

    HYDROCOIN (Hydrologic Code Intercomparison) Level 1 benchmark problems are solved using the finite element ground-water flow code STOKES and the pathline generating code PARTICLE developed for the Office of Crystalline Repository Development (OCRD). The objective of the Level 1 benchmark problems is to verify the numerical accuracy of ground-water flow codes by intercomparison of their results with analytical solutions and other numerical computer codes. Seven test cases were proposed for Level 1 to the Swedish Nuclear Power Inspectorate, the managing participant of HYDROCOIN. Cases 1, 2, 4, and 7 were selected by OCRD because of their appropriateness to the nature of crystalline repository hydrologic performance. The background relevance, conceptual model, and assumptions of each case are presented. The governing equations, boundary conditions, input parameters, and the solution schemes applied to each case are discussed. The results are shown in graphic and tabular form with concluding remarks. The results demonstrate the two-dimensional verification of STOKES and PARTICLE. 5 refs., 61 figs., 30 tabs

  1. THE ACCOUNTANTS’ ETHICAL CODE OF CONDUCT FROM AN ISLAMIC PERSPECTIVE: CASE IN YEMEN

    OpenAIRE

    Al-Hasan Al-Aidaros; Kamil Md. Idris; Faridahwati Mohd. Shamsudin

    2011-01-01

    An ethical code of conduct is developed to guide behaviors of members in or of organizations. Accountants, in this context, are not an exception. The availability of such ethical code of conduct is extremely important for both accountants and users of accounting information. However, currently in Yemen, there is no ethical code of conduct for Yemeni professional accountants. Hence, a study was conducted to develop an ethical code of conduct for Yemeni professional accountants from an Islamic ...

  2. Use Them ... or Lose Them? The Case for and against Using QR Codes

    Science.gov (United States)

    Cunningham, Chuck; Dull, Cassie

    2011-01-01

    A quick-response (QR) code is a two-dimensional, black-and-white square barcode and links directly to a URL of one's choice. When the code is scanned with a smartphone, it will automatically redirect the user to the designated URL. QR codes are popping up everywhere--billboards, magazines, posters, shop windows, TVs, computer screens, and more.…

  3. ASME Nuclear Crane Standards for Enhanced Crane Safety and Increased Profit

    Science.gov (United States)

    Parkhurst, Stephen N.

    2000-01-01

    The ASME NOG-1 standard, 'Rules for Construction of Overhead and Gantry Cranes', covers top running cranes for nuclear facilities; with the ASME NUM-1 standard, 'Rules for Construction of Cranes, Monorails, and Hoists', covering the single girder, underhung, wall and jib cranes, as well as the monorails and hoists. These two ASME nuclear crane standards provide criteria for designing, inspecting and testing overhead handling equipment with enhanced safety to meet the 'defense-in-depth' approach of the United States Nuclear Regulatory Commission (USNRC) documents NUREG 0554 and NUREG 0612. In addition to providing designs for enhanced safety, the ASME nuclear crane standards provide a basis for purchasing overhead handling equipment with standard safety features, based upon accepted engineering principles, and including performance and environmental parameters specific to nuclear facilities. The ASME NOG-1 and ASME NUM-1 standards not only provide enhanced safety for handling a critical load, but also increase profit by minimizing the possibility of load drops, by reducing cumbersome operating restrictions, and by providing the foundation for a sound licensing position. The ASME nuclear crane standards can also increase profit by providing the designs and information to help ensure that the right standard equipment is purchased. Additionally, the ASME nuclear crane standards can increase profit by providing designs and information to help address current issues, such as the qualification of nuclear plant cranes for making 'planned engineered lifts' for steam generator replacement and decommissioning.

  4. A Review & Assessment of Current Operating Conditions Allowable Stresses in ASME Section III Subsection NH

    Energy Technology Data Exchange (ETDEWEB)

    R. W. Swindeman

    2009-12-14

    The current operating condition allowable stresses provided in ASME Section III, Subsection NH were reviewed for consistency with the criteria used to establish the stress allowables and with the allowable stresses provided in ASME Section II, Part D. It was found that the S{sub o} values in ASME III-NH were consistent with the S values in ASME IID for the five materials of interest. However, it was found that 0.80 S{sub r} was less than S{sub o} for some temperatures for four of the materials. Only values for alloy 800H appeared to be consistent with the criteria on which S{sub o} values are established. With the intent of undertaking a more detailed evaluation of issues related to the allowable stresses in ASME III-NH, the availabilities of databases for the five materials were reviewed and augmented databases were assembled.

  5. A comparison of recent full-scale component fatigue data with the ASME Section III fatigue design curves

    International Nuclear Information System (INIS)

    This paper compares recent data developed in three separate programs, two conducted at Battelle-Columbus and the other at Oak Ridge National Laboratories, to the ASME Section III fatigue design rules. Each set of data involve cyclically loaded ''unflawed'' girth welds in which the number of cycles required to produce a leak was less, and in some cases significantly less, than what one would expect based on the design curves. All sets of data were generated at ambient temperature, in an inert environment such that any environmental effects should be minimal. This study is relevant for light water reactors

  6. Implementing the Netherlands Code of Conduct for Scientific Practice: A Case Study

    OpenAIRE

    Schuurbiers, D.; Osseweijer, P.; Kinderlerer, J.

    2009-01-01

    Widespread enthusiasm for establishing scientific codes of conduct notwithstanding, the utility of such codes in influencing scientific practice is not self-evident. It largely depends on the implementation phase following their establishment—a phase which often receives little attention. The aim of this paper is to provide recommendations for guiding effective implementation through an assessment of one particular code of conduct in one particular institute. Based on a series of interviews h...

  7. Code generation by model transformation: a case study in transformation modularity

    NARCIS (Netherlands)

    Hemel, Z.; Kats, L.C.L.; Groenewegen, D.M.; Viser, E.

    2009-01-01

    The realization of model-driven software development requires effective techniques for implementing code generators for domain-specific languages. This paper identifies techniques for improving separation of concerns in the implementation of generators. The core technique is code generation by model

  8. Early Cases of Code-Switching in Mexican-Heritage Children: Linguistic and Sociopragmatic Considerations

    Science.gov (United States)

    Vu, Jennifer A.; Bailey, Alison L.; Howes, Carollee

    2010-01-01

    Reasons for code-switching in young children range from the linguistic (single-word borrowings that appear to be translation equivalents or to fill gaps in lexical knowledge) to more complex sociolinguistic and sociocognitive factors, such as desiring affiliative interactions. We looked at patterns of code-switching in narratives derived from…

  9. Implementing the Netherlands Code of Conduct for Scientific Practice: A Case Study

    NARCIS (Netherlands)

    Schuurbiers, D.; Osseweijer, P.; Kinderlerer, J.

    2009-01-01

    Widespread enthusiasm for establishing scientific codes of conduct notwithstanding, the utility of such codes in influencing scientific practice is not self-evident. It largely depends on the implementation phase following their establishment—a phase which often receives little attention. The aim of

  10. Tracking Holland Interest Codes: The Case of South African Field Guides

    Science.gov (United States)

    Watson, Mark B.; Foxcroft, Cheryl D.; Allen, Lynda J.

    2007-01-01

    Holland believes that specific personality types seek out matching occupational environments and his theory codes personality and environment according to a six letter interest typology. Since 1985 there have been numerous American studies that have queried the validity of Holland's coding system. Research in South Africa is scarcer, despite…

  11. The non-coding oncogene: a case of missing DNA evidence?

    Directory of Open Access Journals (Sweden)

    Puja eShahrouki

    2012-09-01

    Full Text Available The evidence that links classical protein-coding proto-oncogenes and tumor suppressors, such as MYC, RAS, P53, and RB, to carcinogenesis is indisputable. Multiple lines of proof show how random somatic genomic alteration of such genes (e.g. mutation, deletion or amplification, followed by selection and clonal expansion, forms the main molecular basis of tumor development. Many important cancer genes were discovered using low-throughput approaches in the pre-genomic era, and this knowledge is today solidified and expanded upon by modern genome-scale methodologies. In several recent studies, non-coding RNAs (ncRNAs, such as microRNAs and long non-coding RNAs (lncRNAs, have been shown to contribute to tumor development. However, in comparison with coding cancer genes, the genomic (DNA-level evidence is sparse for ncRNAs. The coding proto-oncogenes and tumor suppressors that we know of today are major molecular hubs in both normal and malignant cells. The search for non-coding RNAs with tumor driver or suppressor roles therefore holds the additional promise of pinpointing important, biologically active, ncRNAs in a vast and largely uncharacterized non-coding transcriptome. Here, we assess the available DNA-level data that links non-coding genes to tumor development. We further consider historical, methodological and biological aspects, and discuss future prospects of ncRNAs in cancer.

  12. Comparisons of ANS, ASME, AWS, and NFPA standards cited in the NRC standard review plan, NUREG-0800, and related documents

    International Nuclear Information System (INIS)

    This report provides the results of comparisons of the cited and latest versions of ANS, ASME, AWS and NFPA standards cited in the NRC Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants (NUREG 0800) and related documents. The comparisons were performed by Battelle Pacific Northwest Laboratories in support of the NRC's Standard Review Plan Update and Development Program. Significant changes to the standards, from the cited version to the latest version, are described and discussed in a tabular format for each standard. Recommendations for updating each citation in the Standard Review Plan are presented. Technical considerations and suggested changes are included for related regulatory documents (i.e., Regulatory Guides and the Code of Federal Regulations) citing the standard. The results and recommendations presented in this document have not been subjected to NRC staff review

  13. Comparisons of ANS, ASME, AWS, and NFPA standards cited in the NRC standard review plan, NUREG-0800, and related documents

    Energy Technology Data Exchange (ETDEWEB)

    Ankrum, A.R.; Bohlander, K.L.; Gilbert, E.R.; Spiesman, J.B. [Pacific Northwest Lab., Richland, WA (United States)

    1995-11-01

    This report provides the results of comparisons of the cited and latest versions of ANS, ASME, AWS and NFPA standards cited in the NRC Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants (NUREG 0800) and related documents. The comparisons were performed by Battelle Pacific Northwest Laboratories in support of the NRC`s Standard Review Plan Update and Development Program. Significant changes to the standards, from the cited version to the latest version, are described and discussed in a tabular format for each standard. Recommendations for updating each citation in the Standard Review Plan are presented. Technical considerations and suggested changes are included for related regulatory documents (i.e., Regulatory Guides and the Code of Federal Regulations) citing the standard. The results and recommendations presented in this document have not been subjected to NRC staff review.

  14. A Case for Dynamic Reverse-code Generation to Debug Non-deterministic Programs

    OpenAIRE

    Jooyong Yi

    2013-01-01

    Backtracking (i.e., reverse execution) helps the user of a debugger to naturally think backwards along the execution path of a program, and thinking backwards makes it easy to locate the origin of a bug. So far backtracking has been implemented mostly by state saving or by checkpointing. These implementations, however, inherently do not scale. Meanwhile, a more recent backtracking method based on reverse-code generation seems promising because executing reverse code can restore the previous s...

  15. Collusion, reputation damage and interest in code of conduct: The case of a Dutch construction company

    OpenAIRE

    Graafland, J.J.

    2004-01-01

    In November 2001, a TV program showed that many large Dutch construction companies participated in price fixing. We analyze how one such company, Heijmans, reacted to the reputation crises after the TV program by introducing a code of conduct. We present the outcomes of a questionnaire survey conducted among 140 managers just after the TV program with respect to the relevance of such a code and discuss the change in attitude of the CEO of Heijmans following after the negative publicity.

  16. Calculation code evaluating the confinement of a nuclear facility in case of fires

    Energy Technology Data Exchange (ETDEWEB)

    Laborde, J.C.; Prevost, C.; Vendel, J. [and others

    1995-02-01

    Accident events involving fire are quite frequent and could have a severe effect on the safety of nuclear facilities. As confinement must be maintained, the ventilation and filtration systems have to be designed to limit radioactive release to the environment. To determine and analyse the consequences of a fire on the contamination confinement, IPSN, COGEMA and SGN are participating in development of a calculation code based on introduction, in the SIMEVENT ventilation code, of various models associated to fire risk and mass transfer in the ventilation networks. This calculation code results from the coupling of the SIMEVENT code with several models describing the temperature in a room resulting of a fire, the temperatures along the ventilation ducts, the contamination transfers through out the ventilation equipments (ducts, dampers, valves, air cleaning systems) and the High Efficiency Particulate Air (HEPA) filters clogging. The paper proposed presents the current level of progress in development of this calculation code. It describes, in particular, the empirical model used for the clogging of HEPA filters by the aerosols derived from the combustion of standard materials used in the nuclear industry. It describes, also, the specific models used to take into account the mass transfers and resulting from the basic mechanisms of aerosols physics. In addition, an assessment of this code is given using the example of a simple laboratory installation.

  17. High Level Analysis, Design and Validation of Distributed Mobile Systems with CoreASM

    Science.gov (United States)

    Farahbod, R.; Glässer, U.; Jackson, P. J.; Vajihollahi, M.

    System design is a creative activity calling for abstract models that facilitate reasoning about the key system attributes (desired requirements and resulting properties) so as to ensure these attributes are properly established prior to actually building a system. We explore here the practical side of using the abstract state machine (ASM) formalism in combination with the CoreASM open source tool environment for high-level design and experimental validation of complex distributed systems. Emphasizing the early phases of the design process, a guiding principle is to support freedom of experimentation by minimizing the need for encoding. CoreASM has been developed and tested building on a broad scope of applications, spanning computational criminology, maritime surveillance and situation analysis. We critically reexamine here the CoreASM project in light of three different application scenarios.

  18. 115-year-old society knows how to reach young scientists: ASM Young Ambassador Program.

    Science.gov (United States)

    Karczewska-Golec, Joanna

    2015-12-25

    With around 40,000 members in more than 150 countries, American Society for Microbiology (ASM) faces the challenge of meeting very diverse needs of its increasingly international members base. The newly launched ASM Young Ambassador Program seeks to aid the Society in this effort. Equipped with ASM conceptual support and financing, Young Ambassadors (YAs) design and pursue country-tailored approaches to strengthen the Society's ties with local microbiological communities. In a trans-national setting, the active presence of YAs at important scientific events, such as 16th European Congress on Biotechnology, forges new interactions between ASM and sister societies. The paper presents an overview of the Young Ambassadors-driven initiatives at both global and country levels, and explores the topic of how early-career scientists can contribute to science diplomacy and international relations. PMID:25449541

  19. 115-year-old society knows how to reach young scientists: ASM Young Ambassador Program.

    Science.gov (United States)

    Karczewska-Golec, Joanna

    2015-12-25

    With around 40,000 members in more than 150 countries, American Society for Microbiology (ASM) faces the challenge of meeting very diverse needs of its increasingly international members base. The newly launched ASM Young Ambassador Program seeks to aid the Society in this effort. Equipped with ASM conceptual support and financing, Young Ambassadors (YAs) design and pursue country-tailored approaches to strengthen the Society's ties with local microbiological communities. In a trans-national setting, the active presence of YAs at important scientific events, such as 16th European Congress on Biotechnology, forges new interactions between ASM and sister societies. The paper presents an overview of the Young Ambassadors-driven initiatives at both global and country levels, and explores the topic of how early-career scientists can contribute to science diplomacy and international relations.

  20. Reactor pressure vessel strength calculations - comparing the AD/TRD and the ASME code. Pt. 1

    International Nuclear Information System (INIS)

    The dimensioning criteria applied in the various technical rules are illustrated by the example of a reactor pressure vessel nozzle, especially with a view to the characteristic data of the materials used. Using a detailed finite element analysis of the main coolant nozzle permits an evaluation of the different calculation methods. The second part of the report discusses safety problems, e.g. fatigue analysis, the necessity of carrying out 3D-elastoplastic FE calculations, or the assessment of transient loads on the reactor pressure vessel by means of a fracture-mechanical analysis. (orig./HP)

  1. ASM Scientific Writing and Publishing Institute: Program Impacts and Future Expansion

    OpenAIRE

    Irene V. Hulede; Amy Chang

    2015-01-01

    Scientific writing is one of the most essential skills in science. Writing has numerous benefits and is a critical skill for writing grants, theses, and manuscripts.  The ability to publish research is as almost as important as conducting it. Writing and publishing scientific papers can be difficult for beginning researchers. To help trainees succeed in their efforts to publish, the ASM Committee on Graduate and Postdoctoral Education has offered the ASM Scientific Writing and Publishing Inst...

  2. Acid Sphingomyelinase (ASM is a Negative Regulator of Regulatory T Cell (Treg Development

    Directory of Open Access Journals (Sweden)

    Yuetao Zhou

    2016-08-01

    Full Text Available Background/Aims: Regulatory T cell (Treg is required for the maintenance of tolerance to various tissue antigens and to protect the host from autoimmune disorders. However, Treg may, indirectly, support cancer progression and bacterial infections. Therefore, a balance of Treg function is pivotal for adequate immune responses. Acid sphingomyelinase (ASM is a rate limiting enzyme involved in the production of ceramide by breaking down sphingomyelin. Previous studies in T-cells have suggested that ASM is involved in CD28 signalling, T lymphocyte granule secretion, degranulation, and vesicle shedding similar to the formation of phosphatidylserine-exposing microparticles from glial cells. However, whether ASM affects the development of Treg has not yet been described. Methods: Splenocytes, isolated Naive T lymphocytes and cultured T cells were characterized for various immune T cell markers by flow cytometery. Cell proliferation was measured by Carboxyfluorescein succinimidyl ester (CFSE dye, cell cycle analysis by Propidium Iodide (PI, mRNA transcripts by q-RT PCR and protein expression by Western Blotting respectively. Results: ASM deficient mice have higher number of Treg compared with littermate control mice. In vitro induction of ASM deficient T cells in the presence of TGF-β and IL-2 lead to a significantly higher number of Foxp3+ induced Treg (iTreg compared with control T-cells. Further, ASM deficient iTreg has less AKT (serine 473 phosphorylation and Rictor levels compared with control iTreg. Ceramide C6 led to significant reduction of iTreg in both ASM deficient and WT mice. The reduction in iTreg leads to induction of IL-1β, IL-6 and IL-17 but not IFN-γ mRNA levels. Conclusion: ASM is a negative regulator of natural and iTreg.

  3. TOOKUIL: A case study in user interface development for safety code application

    International Nuclear Information System (INIS)

    Traditionally, there has been a very high learning curve associated with using nuclear power plant (NPP) analysis codes. Even for seasoned plant analysts and engineers, the process of building or modifying an input model for present day NPP analysis codes is tedious, error prone, and time consuming. Current cost constraints and performance demands place an additional burden on today's safety analysis community. Advances in graphical user interface (GUI) technology have been applied to obtain significant productivity and quality assurance improvements for the Transient Reactor Analysis Code (TRAC) input model development. KAPL Inc. has developed an X Windows-based graphical user interface named TOOKUIL which supports the design and analysis process, acting as a preprocessor, runtime editor, help system, and post processor for TRAC. This paper summarizes the objectives of the project, the GUI development process and experiences, and the resulting end product, TOOKUIL

  4. TOOKUIL: A case study in user interface development for safety code application

    Energy Technology Data Exchange (ETDEWEB)

    Gray, D.L.; Harkins, C.K.; Hoole, J.G. [and others

    1997-07-01

    Traditionally, there has been a very high learning curve associated with using nuclear power plant (NPP) analysis codes. Even for seasoned plant analysts and engineers, the process of building or modifying an input model for present day NPP analysis codes is tedious, error prone, and time consuming. Current cost constraints and performance demands place an additional burden on today`s safety analysis community. Advances in graphical user interface (GUI) technology have been applied to obtain significant productivity and quality assurance improvements for the Transient Reactor Analysis Code (TRAC) input model development. KAPL Inc. has developed an X Windows-based graphical user interface named TOOKUIL which supports the design and analysis process, acting as a preprocessor, runtime editor, help system, and post processor for TRAC. This paper summarizes the objectives of the project, the GUI development process and experiences, and the resulting end product, TOOKUIL.

  5. The Moral Reasoning of Public Accountants in the Development of a Code of Ethics: the Case of Indonesia

    Directory of Open Access Journals (Sweden)

    A. S. L. Lindawati

    2012-03-01

    Full Text Available The objective of this study is to explore the user’s perceptions of the role of moral reasoning in influencing the implementation of codes of ethics as standards and guidance for professional audit practice by Indonesian public accountants. The study focuses on two important aspects of influence: (i the key factors influencing professional public accountants in implementing a code of ethics as a standard for audit practice, and (ii the key activities performed by public accountants as moral agents for establishing awareness of professional values. Two theoretical approaches/models are used as guides for exploring the influence of moral reasoning of public accountants: first, Kolhberg’s model of moral development (Kolhberg 1982 and, secondly, the American Institute of Certified Public Accountants (AICPA’s Code of Conduct, especially the five principles of the code of ethics (1992, 2004. The study employs a multiple case study model to analyse the data collected from interviewing 15 financial managers of different company categories (as users. The findings indicate that (i moral development is an important component in influencing the moral reasoning of the individual public accountants, (ii the degree of professionalism of public accountants is determined by the degree of the development of their moral reasoning, and (iii moral reasoning of individuals influences both Indonesian public accountants and company financial managers in building and improving the effectiveness of the implementation of codes of conduct. It is concluded that the role of moral reasoning is an important influence on achieving ethical awareness in public accountants and financial managers. The development of a full code of ethics and an effective compliance monitoring system is essential for Indonesia if it is to play a role in the emerging global economy.

  6. Is Self-Regulation Sufficient? Case of the German Transparency Code

    Directory of Open Access Journals (Sweden)

    Kristin Buske

    2016-02-01

    Full Text Available The German pharmaceutical industry is stepping ahead with its implementation of a new transparency disclosure code for cooperation between pharmaceutical companies and health care professionals (HCPs and health care organisations (HCOs. In Germany, this transparency code (“Transparenzkodex” is applicable since January 2015, and data will be publicly available around mid-2016. No empirical work has been done that addresses the impact of the transparency code on cooperation between HCPs, HCOs and the pharmaceutical companies, including the possibilities of competitive analysis of the available data. In this paper, we interviewed experts from 11 pharmaceutical companies representing small, medium-sized as well as multinational corporations which represent 80% of the German pharmaceutical market. Besides interviews, the authors designed a game to evaluate possible financial investments in key opinion leaders. The market can be regarded as a zero sum game. By allowing public identification of such key HCPs and HCOs, the amount spent on them might increase and not decrease. In a way, the transparency code may foster more and not less spending; in our simulation game, the financial investment in marketing key HCPs and HCOs exceeded sustainable limits.

  7. Code Generation by Model Transformation: A Case Study in Transformation Modularity

    NARCIS (Netherlands)

    Hemel, Z.; Kats, L.C.L.; Visser, E.

    2008-01-01

    Preprint of paper published in: Theory and Practice of Model Transformations (ICMT 2008), Lecture Notes in Computer Science 5063; doi:10.1007/978-3-540-69927-9_13 The realization of model-driven software development requires effective techniques for implementing code generators for domain-specific

  8. Source Code Analysis to Remove Security Vulnerabilities in Java Socket Programs: A Case Study

    Directory of Open Access Journals (Sweden)

    Natarajan Meghanathan

    2013-02-01

    Full Text Available This paper presents the source code analysis of a file reader server socket program (connection-orientedsockets developed in Java, to illustrate the identification, impact analysis and solutions to remove fiveimportant software security vulnerabilities, which if left unattended could severely impact the serverrunning the software and also the network hosting the server. The five vulnerabilities we study in thispaper are: (1 Resource Injection, (2 Path Manipulation, (3 System Information Leak, (4 Denial ofService and (5 Unreleased Resource vulnerabilities. We analyze the reason why each of thesevulnerabilities occur in the file reader server socket program, discuss the impact of leaving themunattended in the program, and propose solutions to remove each of these vulnerabilities from theprogram. We also analyze any potential performance tradeoffs (such as increase in code size and loss offeatures that could arise while incorporating the proposed solutions on the server program. Theproposed solutions are very generic in nature, and can be suitably modified to correct any suchvulnerabilities in software developed in any other programming language. We use the Fortify SourceCode Analyzer to conduct the source code analysis of the file reader server program, implemented on aWindows XP virtual machine with the standard J2SE v.7 development kit.

  9. Code-Switching and Vernacular Support: An Early Middle English Case Study

    Science.gov (United States)

    Skaffari, Janne

    2016-01-01

    In the multilingual history of England, the period following the Norman Conquest in 1066 is a particularly intriguing phase, but its code-switching patterns have so far received little attention. The present article describes and analyses the multilingual practices evinced in London, British Library, MS Stowe 34, containing one instructional prose…

  10. Experimental and numerical study of the fragmentation of expanding warhead casings by using different numerical codes and solution techniques

    Directory of Open Access Journals (Sweden)

    John F. Moxnes

    2014-06-01

    Full Text Available There has been increasing interest in numerical simulations of fragmentation of expanding warheads in 3D. Accordingly there is a pressure on developers of leading commercial codes, such as LS-DYNA, AUTODYN and IMPETUS Afea, to implement the reliable fracture models and the efficient solution techniques. The applicability of the Johnson–Cook strength and fracture model is evaluated by comparing the fracture behaviour of an expanding steel casing of a warhead with experiments. The numerical codes and different numerical solution techniques, such as Eulerian, Lagrangian, Smooth particle hydrodynamics (SPH, and the corpuscular models recently implemented in IMPETUS Afea are compared. For the same solution techniques and material models we find that the codes give similar results. The SPH technique and the corpuscular technique are superior to the Eulerian technique and the Lagrangian technique (with erosion when it is applied to materials that have fluid like behaviour such as the explosive and the tracer. The Eulerian technique gives much larger calculation time and both the Lagrangian and Eulerian techniques seem to give less agreement with our measurements. To more correctly simulate the fracture behaviours of the expanding steel casing, we applied that ductility decreases with strain rate. The phenomena may be explained by the realization of adiabatic shear bands. An implemented node splitting algorithm in IMPETUS Afea seems very promising.

  11. Experimental and numerical study of the fragmentation of expanding warhead casings by using different numerical codes and solution techniques

    Institute of Scientific and Technical Information of China (English)

    John F.MOXNES; Anne K.PRYTZ; yvind FRYLAND; Siri KLOKKEHAUG; Stian SKRIUDALEN; Eva FRIIS; Jan A.TELAND; Cato DRUM; Gard DEGRDSTUEN

    2014-01-01

    There has been increasing interest in numerical simulations of fragmentation of expanding warheads in 3D. Accordingly there is a pressure on developers of leading commercial codes, such as LS-DYNA, AUTODYN and IMPETUS Afea, to implement the reliable fracture models and the efficient solution techniques. The applicability of the Johnsone Cook strength and fracture model is evaluated by comparing the fracture behaviour of an expanding steel casing of a warhead with experiments. The numerical codes and different numerical solution techniques, such as Eulerian, Lagrangian, Smooth particle hydrodynamics (SPH), and the corpuscular models recently implemented in IMPETUS Afea are compared. For the same solution techniques and material models we find that the codes give similar results. The SPH technique and the corpuscular technique are superior to the Eulerian technique and the Lagrangian technique (with erosion) when it is applied to materials that have fluid like behaviour such as the explosive and the tracer. The Eulerian technique gives much larger calculation time and both the Lagrangian and Eulerian techniques seem to give less agreement with our measurements. To more correctly simulate the fracture behaviours of the expanding steel casing, we applied that ductility decreases with strain rate. The phenomena may be explained by the realization of adiabatic shear bands. An implemented node splitting algorithm in IMPETUS Afea seems very promising.

  12. Overcoming barriers to the implementation of a pharmacy bar code scanning system for medication dispensing: a case study.

    Science.gov (United States)

    Nanji, Karen C; Cina, Jennifer; Patel, Nirali; Churchill, William; Gandhi, Tejal K; Poon, Eric G

    2009-01-01

    Technology has great potential to reduce medication errors in hospitals. This case report describes barriers to, and facilitators of, the implementation of a pharmacy bar code scanning system to reduce medication dispensing errors at a large academic medical center. Ten pharmacy staff were interviewed about their experiences during the implementation. Interview notes were iteratively reviewed to identify common themes. The authors identified three main barriers to pharmacy bar code scanning system implementation: process (training requirements and process flow issues), technology (hardware, software, and the role of vendors), and resistance (communication issues, changing roles, and negative perceptions about technology). The authors also identified strategies to overcome these barriers. Adequate training, continuous improvement, and adaptation of workflow to address one's own needs mitigated process barriers. Ongoing vendor involvement, acknowledgment of technology limitations, and attempts to address them were crucial in overcoming technology barriers. Staff resistance was addressed through clear communication, identifying champions, emphasizing new information provided by the system, and facilitating collaboration. PMID:19567797

  13. Development of a three-dimensional CDA analysis code. SIMMER-IV, and its first application to reactor case

    International Nuclear Information System (INIS)

    For the transition phase analysis of core disruptive accidents, the development of a three-dimensional reactor safety analysis code, SIMMER-IV, has been carried out based on the technology of the two-dimensional SIMMER-III code. The world first application of SIMMER-IV to a small-sized sodium-cooled fast reactor has also been attempted to clarify event progression in the early stage of the transition phase. This SIMMER-IV calculation is compared to the two-dimensional case calculated by SIMMER-III, neglecting the presence of control rod guide tubes. The present analysis with the three-dimensional representation suggests that the conventional scenario leading to rather early high-mobility fuel-pool formation is unrealistic and the degraded core tends to keep low mobility in the early stage of transition phase. (author)

  14. 75 FR 80765 - Hazardous Materials: Adoption of ASME Code Section XII and the National Board Inspection Code

    Science.gov (United States)

    2010-12-23

    ... engineering community with technical content and a forum for information exchange. Development committees meet...: Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT. ACTION: Advance notice of proposed... April 11, 2000 (65 FR 19477) or you may visit http://www.regulations.gov . FOR FURTHER...

  15. Compliance of Companies with Corporate Governance Codes: Case Study on Listed Belgian

    Directory of Open Access Journals (Sweden)

    Sven H. De Cleyn

    2014-09-01

    Full Text Available Listed and large companies become increasingly subject to internal and external pressure to comply with ethical and social standards. This article focuses on one aspect of this matter, namely the corporate governance issue. Within the framework of recent corporate scandals, this paper investigates whether and to which extent Belgian publicly listed SMEs comply with the Belgian Code on Corporate Governance after its first year of introduction, which has been constituted in the framework of the European Action Plan on Corporate Governance.In a sample of 78 Belgian listed SMEs, the compliance with the Code is analysed. After its first year of introduction, companies comply with on average 70% of the Code’s provisions. The most problematic topics in terms of disclosure of information seem to relate to (individual remuneration, private information and content of shareholders’ meetings.

  16. Extending the code generation capabilities of the Together CASE tool to support Data Definition languages

    CERN Document Server

    Marino, M

    2003-01-01

    Together is the recommended software development tool in the Atlas collaboration. The programmatic API, which provides the capability to use and augment Together's internal functionality, is comprised of three major components - IDE, RWI and SCI. IDE is a read-only interface used to generate custom outputs based on the information contained in a Together model. RWI allows to both extract and write information to a Together model. SCI is the Source Code Interface, as the name implies it allows to work at the level of the source code. Together is extended by writing modules (java classes) extensively making use of the relevant API. We exploited Together extensibility to add support for the Atlas Dictionary Language. ADL is an extended subset of OMG IDL. The implemented module (ADLModule) makes Together to support ADL keywords, enables options and generate ADL object descriptions directly from UML Class diagrams. The module thoroughly accesses a Together reverse engineered C++ project - and/or design only class ...

  17. Correcting for Telluric Absorption: Methods, Case Studies, and Release of the TelFit Code

    CERN Document Server

    Gullikson, Kevin; Kraus, Adam

    2014-01-01

    Ground-based astronomical spectra are contaminated by the Earth's atmosphere to varying degrees in all spectral regions. We present a Python code that can accurately fit a model to the telluric absorption spectrum present in astronomical data, with residuals of $\\sim 3-5\\%$ of the continuum for moderately strong lines. We demonstrate the quality of the correction by fitting the telluric spectrum in a nearly featureless A0V star, HIP 20264, as well as to a series of dwarf M star spectra near the 819 nm sodium doublet. We directly compare the results to an empirical telluric correction of HIP 20264 and find that our model-fitting procedure is at least as good and sometimes more accurate. The telluric correction code, which we make freely available to the astronomical community, can be used as a replacement for telluric standard star observations for many purposes.

  18. A HOMOGENOUS-EQUILIBRIUM-MODEL BASED NUMERICAL CODE FOR CAVITATION FLOWS AND EVALUATION BY COMPUTATION CASES

    Institute of Scientific and Technical Information of China (English)

    CHEN Ying; LU Chuan-jing

    2008-01-01

    A computer code, ELANEX, including several Homogenous-Equilibrium-Model (HEM) type cavitation models, were developed, to numerically simulate natural cavitation phenomena. The effectiveness of the code was checked by cavitation flows around the disk and cylinder body for a wide range of different cavitation numbers. Cavity profiles were compared with the analytic solution of disk and empirical formulae fitted from the experiment data, and contrast between different cavitation models were fulfilled as well. The cavity length and maximal cavity diameter were found to agree well with the analytic solutions, and detailed cavity profiles were in accordance with the experimental formula. Comparison with the hemisphere headed cylinder body presented a good agreement of the pressure coefficient with the experiment data. Reasonable drag-force coefficient variation and drag-force reduction effect were obtained.

  19. Correcting for telluric absorption: Methods, case studies, and release of the TelFit code

    Energy Technology Data Exchange (ETDEWEB)

    Gullikson, Kevin; Kraus, Adam [Department of Astronomy, University of Texas, 2515 Speedway, Stop C1400, Austin, TX 78712 (United States); Dodson-Robinson, Sarah [Department of Physics and Astronomy, 217 Sharp Lab, Newark, DE 19716 (United States)

    2014-09-01

    Ground-based astronomical spectra are contaminated by the Earth's atmosphere to varying degrees in all spectral regions. We present a Python code that can accurately fit a model to the telluric absorption spectrum present in astronomical data, with residuals of ∼3%-5% of the continuum for moderately strong lines. We demonstrate the quality of the correction by fitting the telluric spectrum in a nearly featureless A0V star, HIP 20264, as well as to a series of dwarf M star spectra near the 819 nm sodium doublet. We directly compare the results to an empirical telluric correction of HIP 20264 and find that our model-fitting procedure is at least as good and sometimes more accurate. The telluric correction code, which we make freely available to the astronomical community, can be used as a replacement for telluric standard star observations for many purposes.

  20. Compliance of Companies with Corporate Governance Codes: Case Study on Listed Belgian

    OpenAIRE

    Sven H. De Cleyn

    2014-01-01

    Listed and large companies become increasingly subject to internal and external pressure to comply with ethical and social standards. This article focuses on one aspect of this matter, namely the corporate governance issue. Within the framework of recent corporate scandals, this paper investigates whether and to which extent Belgian publicly listed SMEs comply with the Belgian Code on Corporate Governance after its first year of introduction, which has been constituted in the framework of the...

  1. Differential Code Biases Temporal and Spatial Variation: A case study of permanent network in Egypt

    Science.gov (United States)

    Mousa, Ashraf; Abd, Mohamed; Rabah, Moustafa; Mowafi, Mahmoud; Awad, Ahmed

    2016-07-01

    Measurements of Global Positioning Satellite System (GPS) receivers are affected by systematic offsets related to group and phase delays of the signal generation and processing chain. One of the important factors affecting the ionosphere Total Electron Content (TEC) estimation accuracy is the hardware Differential Code Bias (DCBs) inherited in both GPS satellites and receivers. The resulting code and phase biases depend on the transmission frequency and the employed signal modulation. An efficient algorithm using the geometry conditions between satellite and tracking receivers is proposed to determine the receiver differential code bias (DCB) using Egyptian permanent reference stations. This method does not require a traditional single-layer ionosphere model and can be used for estimating DCBs of receivers in a regional network. This paper estimates receiver DCBs for nine receivers located within Egyptian network. The results showed that the estimated mean value of the receiver DCB varied from -28 ns (nanosecond) to 39 ns. It is clear from the results that DCB values for Egyptian sites do not vary much with latitude and longitude, except at ABSM and ASWN. DCB values increase gradually with increasing height.

  2. Nonbinary quantum codes

    OpenAIRE

    Eric M. Rains

    1997-01-01

    We present several results on quantum codes over general alphabets (that is, in which the fundamental units may have more than 2 states). In particular, we consider codes derived from finite symplectic geometry assumed to have additional global symmetries. From this standpoint, the analogues of Calderbank-Shor-Steane codes and of GF(4)-linear codes turn out to be special cases of the same construction. This allows us to construct families of quantum codes from certain codes over number fields...

  3. Rateless feedback codes

    DEFF Research Database (Denmark)

    Sørensen, Jesper Hemming; Koike-Akino, Toshiaki; Orlik, Philip

    2012-01-01

    This paper proposes a concept called rateless feedback coding. We redesign the existing LT and Raptor codes, by introducing new degree distributions for the case when a few feedback opportunities are available. We show that incorporating feedback to LT codes can significantly decrease both...... the coding overhead and the encoding/decoding complexity. Moreover, we show that, at the price of a slight increase in the coding overhead, linear complexity is achieved with Raptor feedback coding....

  4. Deleterious coding variants in multi-case families with non-syndromic cleft lip and/or palate phenotypes.

    Science.gov (United States)

    Pengelly, Reuben J; Arias, Liliana; Martínez, Julio; Upstill-Goddard, Rosanna; Seaby, Eleanor G; Gibson, Jane; Ennis, Sarah; Collins, Andrew; Briceño, Ignacio

    2016-01-01

    Nonsyndromic Cleft Lip and/or Palate (NSCLP) is regarded as a multifactorial condition in which clefting is an isolated phenotype, distinguished from the largely monogenic, syndromic forms which include clefts among a spectrum of phenotypes. Nonsyndromic clefting has been shown to arise through complex interactions between genetic and environmental factors. However, there is increasing evidence that the broad NSCLP classification may include a proportion of cases showing familial patterns of inheritance and contain highly penetrant deleterious variation in specific genes. Through exome sequencing of multi-case families ascertained in Bogota, Colombia, we identify 28 non-synonymous single nucleotide variants that are considered damaging by at least one predictive score. We discuss the functional impact of candidate variants identified. In one family we find a coding variant in the MSX1 gene which is predicted damaging by multiple scores. This variant is in exon 2, a highly conserved region of the gene. Previous sequencing has suggested that mutations in MSX1 may account for ~2% of NSCLP. Our analysis further supports evidence that a proportion of NSCLP cases arise through monogenic coding mutations, though further work is required to unravel the complex interplay of genetics and environment involved in facial clefting. PMID:27456059

  5. Language, Power and Gender: A Case Study of Code Switching by Less Educated People In Pakistan

    Directory of Open Access Journals (Sweden)

    Asim KARIM

    2014-03-01

    The major aims of this research were to find out the relation between language and power and how speakers’ use of powerful language varied across gender. This study was quantitative. Data collection was done through questionnaire comprising of two sections. The first section was consisted of 10 close ended questions to know the relation between language and power. The second section of the questionnaire comprising of 10 close ended questions measured the status of Punjabi and Urdu. After careful inquires 30 less educated L1 Punjabi speakers were randomly selected from the city Sheikhupura. Among these 30 participants 15 were male and 15 were female. Audio recording was taken from 14 participants, 7 males and 7 females who had also took part in survey questionnaire to get the data about Urdu code switching. The results collected through the gathered data revealed the L1 Punjabi speakers regarded Urdu as powerful language and they asserted that language and power are closely related with each other. Further women used more powerful language and for this purpose they did more Urdu code switching as compared to men.

  6. Performance analysis of electronic structure codes on HPC systems: a case study of SIESTA.

    Directory of Open Access Journals (Sweden)

    Fabiano Corsetti

    Full Text Available We report on scaling and timing tests of the SIESTA electronic structure code for ab initio molecular dynamics simulations using density-functional theory. The tests are performed on six large-scale supercomputers belonging to the PRACE Tier-0 network with four different architectures: Cray XE6, IBM BlueGene/Q, BullX, and IBM iDataPlex. We employ a systematic strategy for simultaneously testing weak and strong scaling, and propose a measure which is independent of the range of number of cores on which the tests are performed to quantify strong scaling efficiency as a function of simulation size. We find an increase in efficiency with simulation size for all machines, with a qualitatively different curve depending on the supercomputer topology, and discuss the connection of this functional form with weak scaling behaviour. We also analyze the absolute timings obtained in our tests, showing the range of system sizes and cores favourable for different machines. Our results can be employed as a guide both for running SIESTA on parallel architectures, and for executing similar scaling tests of other electronic structure codes.

  7. More on fatigue verification of Class 1 nuclear power piping according to ASME BPV III NB-3600

    International Nuclear Information System (INIS)

    In this paper, fatigue verification of Class 1 nuclear power piping according to ASME Boiler and Pressure Vessel Code, Section III, NB-3600, and relevant issues that are often discussed in connection to the power uprate of several Swedish BWR reactors in recent years, are dealt with. Key parameters involved in the fatigue verification, i.e. the alternating stress intensity Salt, the penalty factor Ke and the cumulative damage factor U, and relevant computational procedures applicable for the assessment of low-cycle fatigue failure using strain-controlled data, are particularly addressed. A so-called simplified elastic-plastic discontinuity analysis for alternative verification when basic fatigue requirements found unsatisfactory, and the procedures provided in NB-3600 for evaluating the alternating stress intensity Salt, are reviewed in detail. Our emphasis is placed on other procedures alternative to the simplified elastic-plastic discontinuity analysis. A more in-depth discussion is given to an alternative suggested earlier by the authors using nonlinear finite element analyses. This paper is a continuation of our work presented in ICONE16/17/18, which attempted to categorize design rules in the code into linear design rules and non-linear design rules and to clarify corresponding design requirements and finite element analyses, in particular, those non-linear ones. (author)

  8. Successful management of a giant anterior sacral meningocele with an endoscopic cutting stapler: case report.

    Science.gov (United States)

    Sunna, Tarek P; Westwick, Harrison J; Zairi, Fahed; Berania, Ilyes; Shedid, Daniel

    2016-05-01

    Anterior sacral meningoceles (ASMs) are rare defects in the sacrum with thecal sac herniations and symptoms that commonly include constipation, dysmenorrhea, and urinary disturbances. An ASM causing hydronephrosis and acute renal failure from compression of the lower portion of the urinary tract is a rare clinical entity. Only one other case has been reported. The authors present the case of a 37-year-old man admitted for obstructive renal failure and hydronephrosis due to a giant ASM that measured 25 × 12 × 18 cm and compressed the ureters and bladder. The ASM was successfully treated via an anterior transabdominal approach in which the authors used a novel technique for watertight closure of the meningocele pedicle with an endoscopic cutting stapler. The authors review the literature and discuss the surgical options for the treatment of ASMs, specifically the management of ASMs in the context of obstructive renal failure and hydronephrosis. PMID:26745349

  9. ASM LabCap's contributions to disease surveillance and the International Health Regulations (2005).

    Science.gov (United States)

    Specter, Steven; Schuermann, Lily; Hakiruwizera, Celestin; Sow, Mah-Séré Keita

    2010-01-01

    The revised International Health Regulations [IHR(2005)], which requires the Member States of the World Health Organization (WHO) to develop core capacities to detect, assess, report, and respond to public health threats, is bringing new challenges for national and international surveillance systems. As more countries move toward implementation and/or strengthening of their infectious disease surveillance programs, the strengthening of clinical microbiology laboratories becomes increasingly important because they serve as the first line responders to detect new and emerging microbial threats, re-emerging infectious diseases, the spread of antibiotic resistance, and the possibility of bioterrorism. In fact, IHR(2005) Core Capacity #8, "Laboratory", requires that laboratory services be a part of every phase of alert and response.Public health laboratories in many resource-constrained countries require financial and technical assistance to build their capacity. In recognition of this, in 2006, the American Society for Microbiology (ASM) established an International Laboratory Capacity Building Program, LabCap, housed under the ASM International Board. ASM LabCap utilizes ASM's vast resources and its membership's expertise-40,000 microbiologists worldwide-to strengthen clinical and public health laboratory systems in low and low-middle income countries. ASM LabCap's program activities align with HR(2005) by building the capability of resource-constrained countries to develop quality-assured, laboratory-based information which is critical to disease surveillance and the rapid detection of disease outbreaks, whether they stem from natural, deliberate or accidental causes.ASM LabCap helps build laboratory capacity under a cooperative agreement with the U.S. Centers for Disease Control and Prevention (CDC) and under a sub-contract with the Program for Appropriate Technology in Health (PATH) funded by the United States Agency for International Development (USAID

  10. Contribution to the prediction of the fold code: application to immunoglobulin and flavodoxin cases.

    Directory of Open Access Journals (Sweden)

    Mateusz Banach

    Full Text Available Folding nucleus of globular proteins formation starts by the mutual interaction of a group of hydrophobic amino acids whose close contacts allow subsequent formation and stability of the 3D structure. These early steps can be predicted by simulation of the folding process through a Monte Carlo (MC coarse grain model in a discrete space. We previously defined MIRs (Most Interacting Residues, as the set of residues presenting a large number of non-covalent neighbour interactions during such simulation. MIRs are good candidates to define the minimal number of residues giving rise to a given fold instead of another one, although their proportion is rather high, typically [15-20]% of the sequences. Having in mind experiments with two sequences of very high levels of sequence identity (up to 90% but different folds, we combined the MIR method, which takes sequence as single input, with the "fuzzy oil drop" (FOD model that requires a 3D structure, in order to estimate the residues coding for the fold. FOD assumes that a globular protein follows an idealised 3D Gaussian distribution of hydrophobicity density, with the maximum in the centre and minima at the surface of the "drop". If the actual local density of hydrophobicity around a given amino acid is as high as the ideal one, then this amino acid is assigned to the core of the globular protein, and it is assumed to follow the FOD model. Therefore one obtains a distribution of the amino acids of a protein according to their agreement or rejection with the FOD model.We compared and combined MIR and FOD methods to define the minimal nucleus, or keystone, of two populated folds: immunoglobulin-like (Ig and flavodoxins (Flav. The combination of these two approaches defines some positions both predicted as a MIR and assigned as accordant with the FOD model. It is shown here that for these two folds, the intersection of the predicted sets of residues significantly differs from random selection. It reduces

  11. Performance analysis of electronic structure codes on HPC systems: A case study of SIESTA

    CERN Document Server

    Corsetti, Fabiano

    2014-01-01

    We report on scaling and timing tests of the SIESTA electronic structure code for ab initio molecular dynamics simulations using density-functional theory. The tests are performed on six large-scale supercomputers belonging to the PRACE Tier-0 network with four different architectures: Cray XE6, IBM BlueGene/Q, BullX, and IBM iDataPlex. We employ a systematic strategy for simultaneously testing hard and soft scaling, and propose a measure which is independent of the range of number of cores on which the tests are performed to quantify hard scaling efficiency as a function of simulation size. We find an increase in efficiency with simulation size for all machines, with a qualitatively different curve depending on the supercomputer topology, and discuss the connection of this functional form with soft scaling behaviour. We also analyze the absolute timings obtained in our tests, showing the range of system sizes and cores favourable for different machines. Our results can be employed as a guide both for running...

  12. STATIC CODE ANALYSIS FOR SOFTWARE QUALITY IMPROVEMENT: A CASE STUDY IN BCI FRAMEWORK DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    Indar Sugiarto

    2008-01-01

    Full Text Available This paper shows how the systematic approach in software testing using static code analysis method can be used for improving the software quality of a BCI framework. The method is best performed during the development phase of framework programs. In the proposed approach, we evaluate several software metrics which are based on the principles of object oriented design. Since such method is depending on the underlying programming language, we describe the method in term of C++ language programming whereas the Qt platform is also currently being used. One of the most important metric is so called software complexity. Applying the software complexity calculation using both McCabe and Halstead method for the BCI framework which consists of two important types of BCI, those are SSVEP and P300, we found that there are two classes in the framework which have very complex and prone to violation of cohesion principle in OOP. The other metrics are fit the criteria of the proposed framework aspects, such as: MPC is less than 20; average complexity is around value of 5; and the maximum depth is below 10 blocks. Such variables are considered very important when further developing the BCI framework in the future.

  13. Roles of the outer membrane protein AsmA of Salmonella enterica in the control of marRAB expression and invasion of epithelial cells.

    Science.gov (United States)

    Prieto, Ana I; Hernández, Sara B; Cota, Ignacio; Pucciarelli, M Graciela; Orlov, Yuri; Ramos-Morales, Francisco; García-del Portillo, Francisco; Casadesús, Josep

    2009-06-01

    A genetic screen for suppressors of bile sensitivity in DNA adenine methylase (dam) mutants of Salmonella enterica serovar Typhimurium yielded insertions in an uncharacterized locus homologous to the Escherichia coli asmA gene. Disruption of asmA suppressed bile sensitivity also in phoP and wec mutants of S. enterica and increased the MIC of sodium deoxycholate for the parental strain ATCC 14028. Increased levels of marA mRNA were found in asmA, asmA dam, asmA phoP, and asmA wec strains of S. enterica, suggesting that lack of AsmA activates expression of the marRAB operon. Hence, asmA mutations may enhance bile resistance by inducing gene expression changes in the marRAB-controlled Mar regulon. In silico analysis of AsmA structure predicted the existence of one transmembrane domain. Biochemical analysis of subcellular fractions revealed that the asmA gene of S. enterica encodes a protein of approximately 70 kDa located in the outer membrane. Because AsmA is unrelated to known transport and/or efflux systems, we propose that activation of marRAB in asmA mutants may be a consequence of envelope reorganization. Competitive infection of BALB/c mice with asmA(+) and asmA isogenic strains indicated that lack of AsmA attenuates Salmonella virulence by the oral route but not by the intraperitoneal route. Furthermore, asmA mutants showed a reduced ability to invade epithelial cells in vitro.

  14. Absence of Doppler signal in transcranial color-coded ultrasonography may be confirmatory for brain death: A case report

    Directory of Open Access Journals (Sweden)

    Mehmet Akif Topçuoğlu

    2015-08-01

    Full Text Available Transcranial Doppler ultrasonography (TCD is a valuable tool for demonstrating cerebral circulatory arrest (CCA in the setting of brain death. Complete reversal of diastolic flow (to-and-fro flow and systolic spikes in bilateral terminal internal carotid arteries and vertebrobasilar circulation are considered as specific sonogram configurations supporting the diagnosis of CCA. Because of the possibility of sonic bone window impermeability, absence of any waveform in TCD is not confirmatory for CCA unless there is documentation of disappearance of a previously well detected signal by the same recording settings. Transcranial color-coded sonography (TCCS with B-mode imaging can reliably detect adequacy of bone windows with clarity contralateral skull and ipsilateral planum temporale visualization. Therefore, absence of detectable intracranial Doppler signal along with available ultrasound window in TCCS can confirm clinical diagnosis of brain death. We herein discuss this entity from the frame of a representative case.

  15. Can 'football-team color-code' compensate for anomia? The case study of FN, a patient with color anomia.

    Science.gov (United States)

    Pita, R; Aretouli, E; Loukopoulou, E; Parissis, D; Ioannides, P; Karakostas, D

    2005-06-01

    A case study is reported on large ischemic infracts involving cortical and subcortical areas of the parietal lobes bilaterally, especially left temporo-parietal and right parietal. On examination, the diagnosis of vascular dementia with color anomia, optic aphasia for colors, was established. The patient (FN) showed great difficulty in understanding a scene as a whole and in describing complex scenes. FN's oral comprehension skills at word and sentence level were satisfactory and he exhibited communicative effectiveness during conversation. He could read letter by letter, but could not make simple judgments of shapes. FN exhibited a marked inability to name colors presented to him visually and to indicate or point to the color requested from the examiner. The most interesting of all the patient's characteristics was the strategy--a football-team color-code--he had developed for compensating for his inability to name colors.

  16. Reaction invariant-based reduction of the activated sludge model ASM1 for batch applications

    DEFF Research Database (Denmark)

    Santa Cruz, Judith A.; Mussati, Sergio F.; Scenna, Nicolás J.;

    2016-01-01

    to batch activated sludge processes described by the Activated Sludge Model No. 1 (ASM1) for carbon and nitrogen removal. The objective of the model reduction is to describe the exact dynamics of the states predicted by the original model with a lower number of ODEs. This leads to a reduction...

  17. SDZ ASM 981 : an emerging safe and effective treatment for atopic dermatitis

    NARCIS (Netherlands)

    Luger, T; Van Leent, EJM; Graeber, M; Hedgecock, S; Thurston, M; Kandra, A; Berth-Jones, J; Bjerke, J; Christophers, E; Knulst, AC; Morren, M; Morris, A; Reitamo, S; Roed-Petersen, J; Schoepf, E; Thestrup-Pedersen, K; Van der Valk, PGM; Bos, JD

    2001-01-01

    Background SDZ ASM 981 is a selective inhibitor of the production of pro-inflammatory cytokines from T cells and mast cells in vitro. It is the first ascomycin macrolactam derivative under development for the treatment of inflammatory skin diseases. Objectives This study was: designed to determine t

  18. ASM LabCap’s contributions to disease surveillance and the International Health Regulations (2005

    Directory of Open Access Journals (Sweden)

    Hakiruwizera Celestin

    2010-12-01

    Full Text Available Abstract The revised International Health Regulations [IHR(2005], which requires the Member States of the World Health Organization (WHO to develop core capacities to detect, assess, report, and respond to public health threats, is bringing new challenges for national and international surveillance systems. As more countries move toward implementation and/or strengthening of their infectious disease surveillance programs, the strengthening of clinical microbiology laboratories becomes increasingly important because they serve as the first line responders to detect new and emerging microbial threats, re-emerging infectious diseases, the spread of antibiotic resistance, and the possibility of bioterrorism. In fact, IHR(2005 Core Capacity #8, “Laboratory”, requires that laboratory services be a part of every phase of alert and response. Public health laboratories in many resource-constrained countries require financial and technical assistance to build their capacity. In recognition of this, in 2006, the American Society for Microbiology (ASM established an International Laboratory Capacity Building Program, LabCap, housed under the ASM International Board. ASM LabCap utilizes ASM’s vast resources and its membership’s expertise—40,000 microbiologists worldwide—to strengthen clinical and public health laboratory systems in low and low-middle income countries. ASM LabCap’s program activities align with HR(2005 by building the capability of resource-constrained countries to develop quality-assured, laboratory-based information which is critical to disease surveillance and the rapid detection of disease outbreaks, whether they stem from natural, deliberate or accidental causes. ASM LabCap helps build laboratory capacity under a cooperative agreement with the U.S. Centers for Disease Control and Prevention (CDC and under a sub-contract with the Program for Appropriate Technology in Health (PATH funded by the United States Agency for

  19. Speech coding

    Energy Technology Data Exchange (ETDEWEB)

    Ravishankar, C., Hughes Network Systems, Germantown, MD

    1998-05-08

    Speech is the predominant means of communication between human beings and since the invention of the telephone by Alexander Graham Bell in 1876, speech services have remained to be the core service in almost all telecommunication systems. Original analog methods of telephony had the disadvantage of speech signal getting corrupted by noise, cross-talk and distortion Long haul transmissions which use repeaters to compensate for the loss in signal strength on transmission links also increase the associated noise and distortion. On the other hand digital transmission is relatively immune to noise, cross-talk and distortion primarily because of the capability to faithfully regenerate digital signal at each repeater purely based on a binary decision. Hence end-to-end performance of the digital link essentially becomes independent of the length and operating frequency bands of the link Hence from a transmission point of view digital transmission has been the preferred approach due to its higher immunity to noise. The need to carry digital speech became extremely important from a service provision point of view as well. Modem requirements have introduced the need for robust, flexible and secure services that can carry a multitude of signal types (such as voice, data and video) without a fundamental change in infrastructure. Such a requirement could not have been easily met without the advent of digital transmission systems, thereby requiring speech to be coded digitally. The term Speech Coding is often referred to techniques that represent or code speech signals either directly as a waveform or as a set of parameters by analyzing the speech signal. In either case, the codes are transmitted to the distant end where speech is reconstructed or synthesized using the received set of codes. A more generic term that is applicable to these techniques that is often interchangeably used with speech coding is the term voice coding. This term is more generic in the sense that the

  20. Informal control code logic

    OpenAIRE

    Bergstra, J. A.

    2010-01-01

    General definitions as well as rules of reasoning regarding control code production, distribution, deployment, and usage are described. The role of testing, trust, confidence and risk analysis is considered. A rationale for control code testing is sought and found for the case of safety critical embedded control code.

  1. Informal Control code logic

    CERN Document Server

    Bergstra, Jan A

    2010-01-01

    General definitions as well as rules of reasoning regarding control code production, distribution, deployment, and usage are described. The role of testing, trust, confidence and risk analysis is considered. A rationale for control code testing is sought and found for the case of safety critical embedded control code.

  2. Nonbinary quantum codes

    CERN Document Server

    Rains, E M

    1997-01-01

    We present several results on quantum codes over general alphabets (that is, in which the fundamental units may have more than 2 states). In particular, we consider codes derived from finite symplectic geometry assumed to have additional global symmetries. From this standpoint, the analogues of Calderbank-Shor-Steane codes and of GF(4)-linear codes turn out to be special cases of the same construction. This allows us to construct families of quantum codes from certain codes over number fields; in particular, we get analogues of quadratic residue codes, including a single-error correcting code encoding one letter in five, for any alphabet size. We also consider the problem of fault-tolerant computation through such codes, generalizing ideas of Gottesman.

  3. Color-coded digital subtraction angiography in the management of a rare case of middle cerebral artery pure arterial malformation. A technical and case report.

    Science.gov (United States)

    Feliciano, Caleb E; Pamias-Portalatin, Eva; Mendoza-Torres, Jorge; Effio, Euclides; Moran, Yadira; Rodriguez-Mercado, Rafael

    2014-12-01

    The advent of flow dynamics and the recent availability of perfusion analysis software have provided new diagnostic tools and management possibilities for cerebrovascular patients. To this end, we provide an example of the use of color-coded angiography and its application in a rare case of a patient with a pure middle cerebral artery (MCA) malformation. A 42-year-old male chronic smoker was evaluated in the emergency room due to sudden onset of severe headache, nausea, vomiting and left-sided weakness. Head computed tomography revealed a right basal ganglia hemorrhage. Cerebral digital subtraction angiography (DSA) showed a right middle cerebral artery malformation consisting of convoluted and ectatic collateral vessels supplying the distal middle cerebral artery territory-M1 proximally occluded. An associated medial lenticulostriate artery aneurysm was found. Brain single-photon emission computed tomography with and without acetazolamide failed to show problems in vascular reserve that would indicate the need for flow augmentation. Twelve months after discharge, the patient recovered from the left-sided weakness and did not present any similar events. A follow-up DSA and perfusion study using color-coded perfusion analysis showed perforator aneurysm resolution and adequate, albeit delayed perfusion in the involved vascular territory. We propose a combined congenital and acquired mechanism involving M1 occlusion with secondary dysplastic changes in collateral supply to the distal MCA territory. Angiographic and cerebral perfusion work-up was used to exclude the need for flow augmentation. Nevertheless, the natural course of this lesion remains unclear and long-term follow-up is warranted.

  4. Barriers concerning the sharing of code of conduct with suppliers : The case of Volvo and its Chinese supplier

    OpenAIRE

    Andersson, John; HE Bing

    2013-01-01

    ABSTRACT Date: 2013-05-30 Level: Bachelor thesis in business administration, 15 hp Institution: Mälardalens University, School of sustainable development of society and technology Authors: John Andersson 19910320, Bing He 19870911 Tutor: Magnus Linderström Keywords: CSR, Knowledge sharing, Code of conduct, Suppliers, Sharing of code of conduct, Barriers, Monitoring. Research question: What barriers affect Swedish companies during the sharing of code of conduct to Chinese suppliers? How do the...

  5. Evaluation on Highlight of NDE in 2013 ASME Code:Conventional and Unconventional UT Techniques For Special Construction%特殊结构的常规和非常规超声检测--ASME 2013 NDE亮点评析(续)

    Institute of Scientific and Technical Information of China (English)

    李衍

    2015-01-01

    重点评析ASME最新版(2013)第Ⅴ卷《无损检测》中涉及承压设备特殊结构常规、非常规体积检测方法(CI法)的亮点,包括堆焊层、小径管、管接头之类检测有一定难度的规范要求、施探要领和典型案例,突出扫查建模仿真和检测特性验证的重要性。企望通过研讨,对照国标行标企标,对照国情行情,找差距、纠偏误,在承压设备NDE向高端、高质、高效发展的方向上,使中国企业正确执行ASME有关规范的水平更上一个台阶。%This article presents an evaluation on the highlight of the updated ASME Code(2013), Section V NDE, in terms of conventional and unconventional volumetric inspection methods (computerized imaging techniques) for some special structure in pressure equipment, such as weld metal overlay cladding, nozzle welds and small diameter tubes and so on, highlighting the importance of modeling scan and performance demonstration. Through discussion, comparing our industrial standards and enterprise standards with the international code, and looking at our national condition and company status, we may expect to ifnd a gap and ifll in the blank, ifll omissions and correct errors in this ifeld, so that we can, on the path of NDE development towards high-end, high quality and high efifciency, make the Chinese enterprise performing the referencing ASME Code Section rise to a higher level.

  6. Evaluation on Highlight of NDE in 2013 ASME Code:Conventional and Unconventional UT Techniques For Special Construction%特殊结构的常规和非常规超声检测--ASME 2013 NDE亮点评析

    Institute of Scientific and Technical Information of China (English)

    李衍

    2015-01-01

    重点评析ASME最新版(2013)第Ⅴ卷《无损检测》中涉及承压设备特殊结构常规、非常规体积检测方法(CI法)的亮点,包括堆焊层、小径管、管接头之类检测有一定难度的规范要求、施探要领和典型案例,突出扫查建模仿真和检测特性验证的重要性。企望通过研讨,对照国标行标企标,对照国情行情,找差距、纠偏误,在承压设备NDE向高端、高质、高效发展的方向上,使中国企业正确执行ASME有关规范的水平更上一个台阶。%This article presents an evaluation on the highlight of the updated ASME Code(2013), Section V NDE, in terms of conventional and unconventional volumetric inspection methods (computerized imaging techniques) for some special structure in pressure equipment, such as weld metal overlay cladding, nozzle welds and small diameter tubes and so on, highlighting the importance of modeling scan and performance demonstration. Through discussion, comparing our industrial standards and enterprise standards with the international code, and looking at our national condition and company status, we may expect to ifnd a gap and ifll in the blank, ifll omissions and correct errors in this ifeld, so that we can, on the path of NDE development towards high-end, high quality and high efifciency, make the Chinese enterprise performing the referencing ASME Code Section rise to a higher level.

  7. Developing a methodology for the evaluation of results uncertainties in CFD codes

    International Nuclear Information System (INIS)

    In this work the development of a methodology is studied to evaluate the uncertainty in the results of CFD codes and is compatible with the VV-20 standard Standard for Verification and Validation in CFD and Heat Transfer , developed by the Association of Mechanical Engineers ASME . Similarly, the alternatives are studied for obtaining existing uncertainty in the results to see which is the best choice from the point of view of implementation and time. We have developed two methods for calculating uncertainty of the results of a CFD code, the first method based on the use of techniques of Monte-Carlo for the propagation of uncertainty in this first method we think it is preferable to use the statistics of the order to determine the number of cases to execute the code, because this way we can always determine the confidence interval desired level of output quantities. The second type of method we have developed is based on non-intrusive polynomial chaos. (Author)

  8. High Temperature Gas Reactors: Assessment of Applicable Codes and Standards

    Energy Technology Data Exchange (ETDEWEB)

    McDowell, Bruce K.; Nickolaus, James R.; Mitchell, Mark R.; Swearingen, Gary L.; Pugh, Ray

    2011-10-31

    Current interest expressed by industry in HTGR plants, particularly modular plants with power up to about 600 MW(e) per unit, has prompted NRC to task PNNL with assessing the currently available literature related to codes and standards applicable to HTGR plants, the operating history of past and present HTGR plants, and with evaluating the proposed designs of RPV and associated piping for future plants. Considering these topics in the order they are arranged in the text, first the operational histories of five shut-down and two currently operating HTGR plants are reviewed, leading the authors to conclude that while small, simple prototype HTGR plants operated reliably, some of the larger plants, particularly Fort St. Vrain, had poor availability. Safety and radiological performance of these plants has been considerably better than LWR plants. Petroleum processing plants provide some applicable experience with materials similar to those proposed for HTGR piping and vessels. At least one currently operating plant - HTR-10 - has performed and documented a leak before break analysis that appears to be applicable to proposed future US HTGR designs. Current codes and standards cover some HTGR materials, but not all materials are covered to the high temperatures envisioned for HTGR use. Codes and standards, particularly ASME Codes, are under development for proposed future US HTGR designs. A 'roadmap' document has been prepared for ASME Code development; a new subsection to section III of the ASME Code, ASME BPVC III-5, is scheduled to be published in October 2011. The question of terminology for the cross-duct structure between the RPV and power conversion vessel is discussed, considering the differences in regulatory requirements that apply depending on whether this structure is designated as a 'vessel' or as a 'pipe'. We conclude that designing this component as a 'pipe' is the more appropriate choice, but that the ASME BPVC

  9. PIPE STRESS and VERPIP codes for stress analysis and verifications of PEC reactor piping

    International Nuclear Information System (INIS)

    To design LMFBR piping systems following ASME Sct. III requirements unusual flexibility computer codes are to be adopted to consider piping and its guard-tube. For this purpose PIPE STRESS code previously prepared by Southern-Service, has been modified. Some subroutine for detailed stress analysis and principal stress calculations on all the sections of piping have been written and fitted in the code. Plotter can also be used. VERPIP code for automatic verifications of piping as class 1 Sct. III prescriptions has been also prepared. The results of PIPE STRESS and VERPIP codes application to PEC piping are in section III of this report

  10. Codes and standards for quality engineering. PVP-Volume 285

    International Nuclear Information System (INIS)

    Codes and Standards address the requirements for safety and reliability of pressure vessels and piping--materials, design, analysis, construction, fabrication, welding, nondestructive examination, acceptance testing, inservice inspection and testing, repair, replacement and modification. The role of Quality Engineering in all of these aspects of Codes and Standards is immense. In light of the experiences and lessons learned, the Codes and Standards Technical Committee of the ASME Pressure Vessels and Piping Division organized several technical and panel sessions. Papers presented at these sessions are contained in this volume. The following topics are discussed: flow-accelerated corrosion; corrosion in piping and vessels; changing priorities in codes and standards; piping system operability; and operating plant criteria. In addition to the above topics, brief summaries of the presentations at the panel sessions sponsored by the Codes and Standards Technical Committee are included in this volume. These pertain to the changing priorities in Codes and Standards and a discussion on the status of ASME Nuclear Codes and Standards. Thirty-eight papers have been processed separately for inclusion on the data base

  11. Guidelines for selecting codes for ground-water transport modeling of low-level waste burial sites. Volume 2. Special test cases

    Energy Technology Data Exchange (ETDEWEB)

    Simmons, C.S.; Cole, C.R.

    1985-08-01

    This document was written for the National Low-Level Waste Management Program to provide guidance for managers and site operators who need to select ground-water transport codes for assessing shallow-land burial site performance. The guidance given in this report also serves the needs of applications-oriented users who work under the direction of a manager or site operator. The guidelines are published in two volumes designed to support the needs of users having different technical backgrounds. An executive summary, published separately, gives managers and site operators an overview of the main guideline report. Volume 1, titled ''Guideline Approach,'' consists of Chapters 1 through 5 and a glossary. Chapters 2 through 5 provide the more detailed discussions about the code selection approach. This volume, Volume 2, consists of four appendices reporting on the technical evaluation test cases designed to help verify the accuracy of ground-water transport codes. 20 refs.

  12. Guidelines for selecting codes for ground-water transport modeling of low-level waste burial sites. Volume 2. Special test cases

    International Nuclear Information System (INIS)

    This document was written for the National Low-Level Waste Management Program to provide guidance for managers and site operators who need to select ground-water transport codes for assessing shallow-land burial site performance. The guidance given in this report also serves the needs of applications-oriented users who work under the direction of a manager or site operator. The guidelines are published in two volumes designed to support the needs of users having different technical backgrounds. An executive summary, published separately, gives managers and site operators an overview of the main guideline report. Volume 1, titled ''Guideline Approach,'' consists of Chapters 1 through 5 and a glossary. Chapters 2 through 5 provide the more detailed discussions about the code selection approach. This volume, Volume 2, consists of four appendices reporting on the technical evaluation test cases designed to help verify the accuracy of ground-water transport codes. 20 refs

  13. Graph Codes with Reed-Solomon Component Codes

    DEFF Research Database (Denmark)

    Høholdt, Tom; Justesen, Jørn

    2006-01-01

    We treat a specific case of codes based on bipartite expander graphs coming from finite geometries. The code symbols are associated with the branches and the symbols connected to a given node are restricted to be codewords in a Reed-Solomon code. We give results on the parameters of the codes and...

  14. (Sigma-Delta) Codes

    OpenAIRE

    Boulagouaz, M.; Leroy, A

    2013-01-01

    In this paper we introduce the notion of cyclic ($f(t),\\sigma,\\delta$)-codes for $f(t)\\in \\Ore$. These codes generalize the $\\theta$-codes as introduced by D. Boucher, F. Ulmer, W. Geiselmann \\cite{BGU}. We construct generic and control matrices for these codes. As a particular case the ($\\si,\\de$)-$W$-code associated to a Wedderburn polynomial are defined and we show that their control matrices are given by generalized Vandermonde matrices. All the Wedderburn polynomials of $\\mathbb F_q[t;\\t...

  15. The Moral Reasoning of Public Accountants in the Development of a Code of Ethics: the Case of Indonesia

    OpenAIRE

    A. S. L. Lindawati; M. J. R. Gaffikin

    2012-01-01

    The objective of this study is to explore the user’s perceptions of the role of moral reasoning in influencing the implementation of codes of ethics as standards and guidance for professional audit practice by Indonesian public accountants. The study focuses on two important aspects of influence: (i) the key factors influencing professional public accountants in implementing a code of ethics as a standard for audit practice, and (ii) the key activities performed by public accountants as moral...

  16. The Prediction of the Wall Bounded Turbulent Flows Using the Code PASSABLE

    OpenAIRE

    BAYDAR, Ertan; ÇUHADAROĞLU, Burhan

    1998-01-01

    Turbulent flows for flat plate and circular pipes were solved using the two equation k-\\varepsilon model and the algebraic stress model (ASM). The computations were carried out using the parabolic solver PASSABLE code which uses a finite-difference and finite-volume approach with a forward maching technique. The results obtained with the code were compared with the results described in the literature and a good agreement was found.

  17. Coupling CFD code with system code and neutron kinetic code

    International Nuclear Information System (INIS)

    Highlights: • Coupling interface between CFD code Fluent and system code Athlet was created. • Athlet code is internally coupled with neutron kinetic code Dyn3D. • Explicit coupling of overlapped computational domains was used. • A coupled system of Athlet/Dyn3D+Fluent codes was successfully tested on a real case. - Abstract: The aim of this work was to develop the coupling interface between CFD code Fluent and system code Athlet internally coupled with neutron kinetic code Dyn3D. The coupling interface is intended for simulation of complex transients such as Main Steam Line Break scenarios, which cannot be modeled separately first by system and neutron kinetic code and then by CFD code, because of the feedback between the codes. In the first part of this article, the coupling method is described. Explicit coupling of overlapped computational domains is used in this work. The second part of the article presents a demonstration simulation performed by the coupled system of Athlet/Dyn3D and Fluent. The “Opening a Steam Dump to the Atmosphere” test carried out at the Temelin NPP (VVER-1000) was simulated by the coupled system. In this simulation, the primary and secondary circuits were modeled by Athlet, mixing in downcomer and lower plenum was simulated by Fluent and heat generation in the core was calculated by Dyn3D. The results of the simulation with Athlet/Dyn3D+Fluent were compared with the experimental data and the results from a calculation performed with Athlet/Dyn3D without Fluent

  18. The ASM-NSF Biology Scholars Program: An Evidence-Based Model for Faculty Development.

    Science.gov (United States)

    Chang, Amy L; Pribbenow, Christine M

    2016-05-01

    The American Society for Microbiology (ASM) established its ASM-NSF (National Science Foundation) Biology Scholars Program (BSP) to promote undergraduate education reform by 1) supporting biologists to implement evidence-based teaching practices, 2) engaging life science professional societies to facilitate biologists' leadership in scholarly teaching within the discipline, and 3) participating in a teaching community that fosters disciplinary-level science, technology, engineering, and mathematics (STEM) reform. Since 2005, the program has utilized year-long residency training to provide a continuum of learning and practice centered on principles from the scholarship of teaching and learning (SoTL) to more than 270 participants ("scholars") from biology and multiple other disciplines. Additionally, the program has recruited 11 life science professional societies to support faculty development in SoTL and discipline-based education research (DBER). To identify the BSP's long-term outcomes and impacts, ASM engaged an external evaluator to conduct a study of the program's 2010-2014 scholars (n = 127) and society partners. The study methods included online surveys, focus groups, participant observation, and analysis of various documents. Study participants indicate that the program achieved its proposed goals relative to scholarship, professional society impact, leadership, community, and faculty professional development. Although participants also identified barriers that hindered elements of their BSP participation, findings suggest that the program was essential to their development as faculty and provides evidence of the BSP as a model for other societies seeking to advance undergraduate science education reform. The BSP is the longest-standing faculty development program sponsored by a collective group of life science societies. This collaboration promotes success across a fragmented system of more than 80 societies representing the life sciences and helps

  19. The ASM-NSF Biology Scholars Program: An Evidence-Based Model for Faculty Development

    Science.gov (United States)

    Chang, Amy L.; Pribbenow, Christine M.

    2016-01-01

    The American Society for Microbiology (ASM) established its ASM-NSF (National Science Foundation) Biology Scholars Program (BSP) to promote undergraduate education reform by 1) supporting biologists to implement evidence-based teaching practices, 2) engaging life science professional societies to facilitate biologists’ leadership in scholarly teaching within the discipline, and 3) participating in a teaching community that fosters disciplinary-level science, technology, engineering, and mathematics (STEM) reform. Since 2005, the program has utilized year-long residency training to provide a continuum of learning and practice centered on principles from the scholarship of teaching and learning (SoTL) to more than 270 participants (“scholars”) from biology and multiple other disciplines. Additionally, the program has recruited 11 life science professional societies to support faculty development in SoTL and discipline-based education research (DBER). To identify the BSP’s long-term outcomes and impacts, ASM engaged an external evaluator to conduct a study of the program’s 2010–2014 scholars (n = 127) and society partners. The study methods included online surveys, focus groups, participant observation, and analysis of various documents. Study participants indicate that the program achieved its proposed goals relative to scholarship, professional society impact, leadership, community, and faculty professional development. Although participants also identified barriers that hindered elements of their BSP participation, findings suggest that the program was essential to their development as faculty and provides evidence of the BSP as a model for other societies seeking to advance undergraduate science education reform. The BSP is the longest-standing faculty development program sponsored by a collective group of life science societies. This collaboration promotes success across a fragmented system of more than 80 societies representing the life sciences and

  20. Noisy Network Coding

    CERN Document Server

    Lim, Sung Hoon; Gamal, Abbas El; Chung, Sae-Young

    2010-01-01

    A noisy network coding scheme for sending multiple sources over a general noisy network is presented. For multi-source multicast networks, the scheme naturally extends both network coding over noiseless networks by Ahlswede, Cai, Li, and Yeung, and compress-forward coding for the relay channel by Cover and El Gamal to general discrete memoryless and Gaussian networks. The scheme also recovers as special cases the results on coding for wireless relay networks and deterministic networks by Avestimehr, Diggavi, and Tse, and coding for wireless erasure networks by Dana, Gowaikar, Palanki, Hassibi, and Effros. The scheme involves message repetition coding, relay signal compression, and simultaneous decoding. Unlike previous compress--forward schemes, where independent messages are sent over multiple blocks, the same message is sent multiple times using independent codebooks as in the network coding scheme for cyclic networks. Furthermore, the relays do not use Wyner--Ziv binning as in previous compress-forward sch...

  1. ASME N510 test results for Savannah River Site AACS filter compartments

    Energy Technology Data Exchange (ETDEWEB)

    Paul, J.D.; Punch, T.M. [Westinghouse Savannah River Company, Aiken, SC (United States)

    1995-02-01

    The K-Reactor at the Savannah River Site recently implemented design improvements for the Airborne Activity Confinement System (AACS) by procuring, installing, and testing new Air Cleaning Units, or filter compartments, to ASME AG-11, N509, and N510 requirements. Specifically, these new units provide documentable seismic resistance to a Design Basis Accident earthquake, provide 2 inch adsorber beds with 0.25 second residence time, and meet all AG-1, N509, and N510 requirements for testability and maintainability. This paper presents the results of the Site acceptance testing and discusses an issue associated with sample manifold qualification testing.

  2. Transient cases analyses of the TRIGA IPR-R1 using thermal hydraulic and neutron kinetic coupled codes

    Energy Technology Data Exchange (ETDEWEB)

    Reis, Patricia A.L.; Costa, Antonella L.; Pereira, Claubia; Veloso, Maria A.F.; Scari, Maria E., E-mail: patricialire@yahoo.com.br, E-mail: antonella@nuclear.ufmg.br, E-mail: claubia@nuclear.ufmg.br, E-mail: dora@nuclear.ufmg.br, E-mail: melizabethscari@yahoo.com [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Departamento de Engenharia Nuclear; Instituto Nacional de Ciencias e Tecnologia de Reatores Nucleares Inovadores (INCT/CNPq), Belo Horizonte (Brazil); Miro, Rafael; Verdu, Gumersindo, E-mail: rmiro@iqn.upv.es, E-mail: gverdu@iqn.upv.es [Universidad Politecnica de Valencia (Spain). Departamento de Ingenieria Quimica y Nuclear

    2015-07-01

    Simulations and analyses of nuclear reactors have been improved by utilization of coupled thermal-hydraulic (TH) and neutron kinetics (NK) system codes especially to simulate transients that involve strong feedback effects between NK and TH. The TH-NK coupling technique was initially developed and used to simulate the behavior of power reactors; however, several coupling methodologies are now being applied for research reactors. This work presents the coupling methodology application between RELAP5 and PARCS codes using as a model the TRIGA IPR-R1 research reactor. Analyses of steady state and transient conditions and comparisons with results from simulations using only the RELAP5 code are being presented in this paper. (author)

  3. Perspective: Selected benchmarks from commercial CFD codes

    Energy Technology Data Exchange (ETDEWEB)

    Freitas, C.J. [Southwest Research Inst., San Antonio, TX (United States). Computational Mechanics Section

    1995-06-01

    This paper summarizes the results of a series of five benchmark simulations which were completed using commercial Computational Fluid Dynamics (CFD) codes. These simulations were performed by the vendors themselves, and then reported by them in ASME`s CFD Triathlon Forum and CFD Biathlon Forum. The first group of benchmarks consisted of three laminar flow problems. These were the steady, two-dimensional flow over a backward-facing step, the low Reynolds number flow around a circular cylinder, and the unsteady three-dimensional flow in a shear-driven cubical cavity. The second group of benchmarks consisted of two turbulent flow problems. These were the two-dimensional flow around a square cylinder with periodic separated flow phenomena, and the stead, three-dimensional flow in a 180-degree square bend. All simulation results were evaluated against existing experimental data nd thereby satisfied item 10 of the Journal`s policy statement for numerical accuracy. The objective of this exercise was to provide the engineering and scientific community with a common reference point for the evaluation of commercial CFD codes.

  4. Decoding of concatenated codes with interleaved outer codes

    DEFF Research Database (Denmark)

    Justesen, Jørn; Thommesen, Christian; Høholdt, Tom

    2004-01-01

    Recently Bleichenbacher et al. proposed a decoding algorithm for interleaved Reed/Solomon codes, which allows close to errors to be corrected in many cases. We discuss the application of this decoding algorithm to concatenated codes. (NK) N-K......Recently Bleichenbacher et al. proposed a decoding algorithm for interleaved Reed/Solomon codes, which allows close to errors to be corrected in many cases. We discuss the application of this decoding algorithm to concatenated codes. (NK) N-K...

  5. Construction of Codes for Network Coding

    CERN Document Server

    Elsenhans, Andreas-Stephan; Wassermann, Alfred

    2010-01-01

    Based on ideas of K\\"otter and Kschischang we use constant dimension subspaces as codewords in a network. We show a connection to the theory of q-analogues of a combinatorial designs, which has been studied in Braun, Kerber and Laue as a purely combinatorial object. For the construction of network codes we successfully modified methods (construction with prescribed automorphisms) originally developed for the q-analogues of a combinatorial designs. We then give a special case of that method which allows the construction of network codes with a very large ambient space and we also show how to decode such codes with a very small number of operations.

  6. The Monte Carlo method for shielding calculations analysis by MORSE code of a streaming case in the CAORSO BWR power reactor shielding (Italy)

    International Nuclear Information System (INIS)

    In the field of shielding, the requirement of radiation transport calculations in severe conditions, characterized by irreducible three-dimensional geometries has increased the use of the Monte Carlo method. The latter has proved to be the only rigorous and appropriate calculational method in such conditions. However, further efforts at optimization are still necessary to render the technique practically efficient, despite recent improvements in the Monte Carlo codes, the progress made in the field of computers and the availability of accurate nuclear data. Moreover, the personal experience acquired in the field and the control of sophisticated calculation procedures are of the utmost importance. The aim of the work which has been carried out is the gathering of all the necessary elements and features that would lead to an efficient utilization of the Monte Carlo method used in connection with shielding problems. The study of the general aspects of the method and the exploitation techniques of the MORSE code, which has proved to be one of the most comprehensive of the Monte Carlo codes, lead to a successful analysis of an actual case. In fact, the severe conditions and difficulties met have been overcome using such a stochastic simulation code. Finally, a critical comparison between calculated and high-accuracy experimental results has allowed the final confirmation of the methodology used by us

  7. Functions and Functional Preferences of Code Switching: A Case Study at a Private K-8 School in Turkish Context

    Directory of Open Access Journals (Sweden)

    Karolin DEMIRCI

    2015-06-01

    Full Text Available Due to the changes in the approaches and methods in English language teaching throughout history, the use of mother tongue (L1 has been one of the most important topics discussed in the foreign language teaching field. Although most of the approaches used nowadays do not support the use of mother tongue, there is a change in the perception towards teachers’ code-switching in foreign language (L2 learning classrooms. There are various recent studies suggesting that using mother tongue facilitates foreign language learning. In this respect, the purpose of this study was to examine the teachers’ and students’ perceptions towards L1 use in L2 classrooms and under which circumstances they preferred using mother tongue. In addition, learners’ preferences of teachers’ code switching were also analyzed. Both teachers’ and students’ perceptions and beliefs on code switching were investigated using the questionnaires, classroom observations and interviews as data collection tools. There were 2 hour-observation periods (90 minutes in the classrooms of 2nd grade, 4th grade and 7th grade in which the circumstances of L1 use were analyzed to determine if there were any common characteristics of the L1 use. Findings of the revealed that there were some common circumstances where teachers code-switched to facilitate learning in the classroom and that students had some clear preferences for their teachers to switch to L1.

  8. Results from Evaluation of Proposed ASME AG-1 Section FI Metal Media Filters - 13063

    International Nuclear Information System (INIS)

    High efficiency particulate air (HEPA) filtration technology is commonly used in Department of Energy (DOE) facilities that require control of radioactive particulate matter (PM) emissions due to treatment or management of radioactive materials. Although HEPA technology typically makes use of glass fiber media, metal and ceramic media filters are also capable of filtering efficiencies beyond the required 99.97%. Sintered metal fiber filters are good candidates for use in DOE facilities due to their resistance to corrosive environments and resilience at high temperature and elevated levels of relative humidity. Their strength can protect them from high differential pressure or pressure spikes and allow for back pulse cleaning, extending filter lifetime. Use of these filters has the potential to reduce the cost of filtration in DOE facilities due to life cycle cost savings. ASME AG-1 section FI has not been approved due to a lack of protocols and performance criteria for qualifying section FI filters. The Institute for Clean Energy Technology (ICET) with the aid of the FI project team has developed a Section FI test stand and test plan capable of assisting in the qualification ASME AG-1 section FI filters. Testing done at ICET using the FI test stand evaluates resistance to rated air flow, test aerosol penetration and resistance to heated air of the section FI filters. Data collected during this testing consists of temperature, relative humidity, differential pressure, flow rate, upstream particle concentration, and downstream particle concentration. (authors)

  9. Recommended provisions for equipment seismic qualification consistent with IEEE and ASME criteria for use of experience

    International Nuclear Information System (INIS)

    Recommendations are being developed to incorporate into IEEE and ASME standards the recent developments for the seismic qualification of equipment in nuclear power plants by use of experience, primarily from past earthquakes and shake table tests. These developments are by a Special Working Group appointed by standards groups of the Institute of Electrical and Electronics Engineers Nuclear Power Engineering Committee and the American Society of Mechanical Engineers Main Committee on Qualification of Mechanical Equipment. This paper presents the objective and scope of the Special Working Group. The IEEE and ASME committees have initiated this ongoing activity, so that the industry standards on equipment seismic qualification evolve more towards the advances made by the Seismic Qualification Utility Group Generic Implementation Procedure, which was developed for the resolution of the US Nuclear Regulatory Commission Unresolved Safety Issue A-46. The Special Working Group also incorporates the advances made by the Advanced Reactor Corporation and US Department of Energy first-of-a-kind engineering towards equipment seismic qualification criteria based on experience, for the Advanced Light Water Reactor

  10. Integral and Rxte/Asm Observations on Igr J17098-3628

    CERN Document Server

    Chen, Yu-Peng; Schurch, Nick; Wang, Jian-Min; Collmar, Werner; Li, Ti-Pei; Qu, Jin-Lu; Zhang, Cheng-Min

    2008-01-01

    To probe further the possible nature of the unidentified source IGR J17098-3628, we have carried out a detailed analysis of its long-term time variability as monitored by RXTE/ASM, and of its hard X-ray properties as observed by INTEGRAL. INTEGRAL has monitored this sky region over years and significantly detected IGR J17098-3628 only when the source was in this dubbed active state. In particular, at $\\ge$ 20 keV, IBIS/ISGRI caught an outburst in March 2005, lasting for $\\sim$5 days with detection significance of 73$\\sigma$ (20-40 keV) and with the emission at $$20 keV) outburst by $\\sim$2 days. This resembles the behavior of X-ray novae like XN 1124-683, hence it further suggests a LMXB nature for IGR J17098-3628. While the quality of the ASM data prevents us from drawing any definite conclusions, these discoveries are important clues that, coupled with future observations, will help to resolve the as yet unknown nature of IGR J17098-3628.

  11. Modelling the biological performance of a side-stream membrane bioreactor using ASM1

    Institute of Scientific and Technical Information of China (English)

    TIAN Ke-jun; LIU Xin-ai; JIANG Tao; M.D. Kennedy; J.C. Schippers; P.A. Vanrolleghem

    2004-01-01

    Membrane bioreactors(MBRs) are attracting global interest but the mathematical modeling of the biological performance of MBRs remains very limited. This study focuses on the modelling of a side-stream MBR system using Activated Sludge Model No.1(ASM1), and comparing the results with the modelling of traditional activated sludge processes. ASM1 parameters relevant for the long-term biological behaviour in MBR systems were calibrated(i.e. YH=0.72gCOD/gCOD, YA=0.25gCOD/gN, bH=0.25 d-1, bA=0.080 d-1 and fP=0.06), and generally agreed with the parameters in traditional activated sludge processes, with the exception that a higher autotrophic biomass decay rate was observed in the MBR. A sensitivity analysis for steady state operation and DO dynamics suggested that the biological performance of the MBR system(the sludge concentration, effluent quality and the DO dynamics) are very sensitive to the parameters(i.e. YH, YA, bH, bA, (maxH and (maxA), and influent wastewater components(XI, Ss, Xs, SNH).

  12. 3D automatic anatomy segmentation based on iterative graph-cut-ASM

    International Nuclear Information System (INIS)

    Purpose: This paper studies the feasibility of developing an automatic anatomy segmentation (AAS) system in clinical radiology and demonstrates its operation on clinical 3D images. Methods: The AAS system, the authors are developing consists of two main parts: object recognition and object delineation. As for recognition, a hierarchical 3D scale-based multiobject method is used for the multiobject recognition task, which incorporates intensity weighted ball-scale (b-scale) information into the active shape model (ASM). For object delineation, an iterative graph-cut-ASM (IGCASM) algorithm is proposed, which effectively combines the rich statistical shape information embodied in ASM with the globally optimal delineation capability of the GC method. The presented IGCASM algorithm is a 3D generalization of the 2D GC-ASM method that they proposed previously in Chen et al.[Proc. SPIE, 7259, 72590C1-72590C-8 (2009)]. The proposed methods are tested on two datasets comprised of images obtained from 20 patients (10 male and 10 female) of clinical abdominal CT scans, and 11 foot magnetic resonance imaging (MRI) scans. The test is for four organs (liver, left and right kidneys, and spleen) segmentation, five foot bones (calcaneus, tibia, cuboid, talus, and navicular). The recognition and delineation accuracies were evaluated separately. The recognition accuracy was evaluated in terms of translation, rotation, and scale (size) error. The delineation accuracy was evaluated in terms of true and false positive volume fractions (TPVF, FPVF). The efficiency of the delineation method was also evaluated on an Intel Pentium IV PC with a 3.4 GHZ CPU machine. Results: The recognition accuracies in terms of translation, rotation, and scale error over all organs are about 8 mm, 10 deg. and 0.03, and over all foot bones are about 3.5709 mm, 0.35 deg. and 0.025, respectively. The accuracy of delineation over all organs for all subjects as expressed in TPVF and FPVF is 93.01% and 0.22%, and

  13. 3D automatic anatomy segmentation based on iterative graph-cut-ASM

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Xinjian; Bagci, Ulas [Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Building 10 Room 1C515, Bethesda, Maryland 20892-1182 and Life Sciences Research Center, School of Life Sciences and Technology, Xidian University, Xi' an 710071 (China); Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Building 10 Room 1C515, Bethesda, Maryland 20892-1182 (United States)

    2011-08-15

    Purpose: This paper studies the feasibility of developing an automatic anatomy segmentation (AAS) system in clinical radiology and demonstrates its operation on clinical 3D images. Methods: The AAS system, the authors are developing consists of two main parts: object recognition and object delineation. As for recognition, a hierarchical 3D scale-based multiobject method is used for the multiobject recognition task, which incorporates intensity weighted ball-scale (b-scale) information into the active shape model (ASM). For object delineation, an iterative graph-cut-ASM (IGCASM) algorithm is proposed, which effectively combines the rich statistical shape information embodied in ASM with the globally optimal delineation capability of the GC method. The presented IGCASM algorithm is a 3D generalization of the 2D GC-ASM method that they proposed previously in Chen et al.[Proc. SPIE, 7259, 72590C1-72590C-8 (2009)]. The proposed methods are tested on two datasets comprised of images obtained from 20 patients (10 male and 10 female) of clinical abdominal CT scans, and 11 foot magnetic resonance imaging (MRI) scans. The test is for four organs (liver, left and right kidneys, and spleen) segmentation, five foot bones (calcaneus, tibia, cuboid, talus, and navicular). The recognition and delineation accuracies were evaluated separately. The recognition accuracy was evaluated in terms of translation, rotation, and scale (size) error. The delineation accuracy was evaluated in terms of true and false positive volume fractions (TPVF, FPVF). The efficiency of the delineation method was also evaluated on an Intel Pentium IV PC with a 3.4 GHZ CPU machine. Results: The recognition accuracies in terms of translation, rotation, and scale error over all organs are about 8 mm, 10 deg. and 0.03, and over all foot bones are about 3.5709 mm, 0.35 deg. and 0.025, respectively. The accuracy of delineation over all organs for all subjects as expressed in TPVF and FPVF is 93.01% and 0.22%, and

  14. Establishment of voluntary consensus codes and role of code engineers. Example of the environmental fatigue evaluation method for light water reactors

    International Nuclear Information System (INIS)

    The design and construction codes for nuclear power plants worldwide have been established based on ASME Sec. III. Since the requirements of fatigue evaluation were first introduced in the ASME codes in 1963, the fatigue evaluation methods have been used with few changes. In 2006, the world's first consensus codes for the environmental fatigue evaluation method have been established in JSME. The codes incorporate the results of international research projects mainly led by Japan on the environmental fatigue, that is, the reduced fatigue life of components in a high-temperature reactor coolant environment. This is a good example of international collaboration involving code engineers with expertise in the field of codes and standards. In these projects, the Japanese team contributed to the establishment of the world-leading codes for environmental fatigue evaluation. This paper describes the activities leading to the establishment of the codes for environmental fatigue evaluation, development of the evaluation method, roles of code engineers and remaining technical issues to be addressed. (author)

  15. Establishment of voluntary consensus codes and the role of code engineers. Example of creating the environmental fatigue evaluation method for light water reactors

    International Nuclear Information System (INIS)

    The design and construction codes for nuclear power plants worldwide have been established based on ASME Boiler and Pressure Vessel code Section III. Since the requirements for fatigue evaluation were first introduced in the ASME codes in 1963, fatigue evaluation methods have been used with few changes. In 2006, the world's first consensus codes describing a method for environmental fatigue evaluation have been established by the JSME. These codes incorporate the results of international research projects, led mainly by Japan, regarding environmental fatigue, that is, the reduced fatigue life of components subjected to a high-temperature reactor coolant environment. This effort exemplifies the international collaboration of engineers with expertise in the field of codes/standards. The Japanese team was a key contributor to the creation of these new international consensus codes for environmental fatigue evaluation. This paper describes the activities leading to the establishment of these codes, the development of the environmental fatigue evaluation method, the roles of code engineers during this process, and the remaining technical issues to be addressed. (author)

  16. Simulation and optimization of MBR by CFD and ASM-CFD%CFD及ASM-CFD在MBR研究中的应用进展

    Institute of Scientific and Technical Information of China (English)

    张晴; 樊耀波; 魏源送; 郁达伟; 徐荣乐

    2013-01-01

    综述了国内外计算流体力学(Computational Fluid Dynamics,CFD)在膜生物反应器(Membrane Bioreactor,MBR)研究中的应用进展,介绍了与活性污泥模型(Activated sludgemodel,ASM)相结合的ASM—CFD模型在MBR研究中的应用状况.曝气优化,膜组件、膜单元及生物单元结构的优化是目前基于CFD的MBR模拟研究重点.国外CFD模拟研究较早,模拟规模已高达4 800m3/d.与之相比,我国开展MBR的CFD模拟研究起步较晚,目前仍处在小试规模的模拟阶段.ASM— CFD模拟已在常规活性污泥法污水处理研究中得到了成功应用,预期其在MBR的研究、设计与应用中有望成为一个新热点和方向.

  17. Pressure vessel code construction capabilities for a nickel-chromium-tungsten-molybdenum alloy

    International Nuclear Information System (INIS)

    HAYNES alloy 230 (UNS NO6230) has achieved wide usage in a variety of high-temperature aerospace, chemical process industry and industrial heating applications since its introduction in 1981. Combining high elevated temperature strength with excellent metallurgical stability, environment-resistance and relatively straight forward fabrication characteristics, this Ni-Cr-W-Mo alloy was an excellent candidate for ASME Pressure vessel Code applications. Coverage under case No. 2063 was granted in July, 1989, for both Section I and Section VIII Division 1 construction. In this paper, the metallurgy of 230 alloy will be described, and its design strength capabilities contrasted with those for more established code materials. Other important performance capabilities, such as long-term thermal stability, oxidation-resistance, fatigue-resistance, and resistance to other forms of environmental degradation will be discussed. It will be shown that the combined properties of 230 alloy offer some significant advantages over other materials for applications such as expansion bellows, heat-exchangers, valves and other components in the fossil energy, nuclear energy and chemical process industries, among others

  18. Testing frequencies of safety related pumps and valves: Probabilistic safety assessment versus United States industry codes

    International Nuclear Information System (INIS)

    PSA provides a mechanism for identifying key risk significant components and estimating the effects of test frequency changes. If it is possible to optimize the testing frequencies of these components, component failure probabilities can be minimized. This reduces overall system unavailability and the probability of core damage. In cases where test frequencies cannot be adjusted directly into an optimal range, it is at least useful to know where the existing test frequency lies relative to the optimal value. From this, one can determine whether a component is being undertested or overtested. Test intervals have been historically established on the basis of deterministic industry standards such as the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code. Section XI, Subsections IWP and IWV, of this code, respectively, set recommended test intervals for safety related pumps and valves. Since optimal test intervals have not been established on the basis of actual experience data, it has not been possible for testing program developers to judge whether increases in test intervals will have a positive or negative effect on component unavailability. The paper reviews the basic theory of optimal test intervals for periodically tested components, discusses recent work which addresses the effects of operational data uncertainties and demonstrates that, on the basis of actual operational reliability data, safety related pumps and motor operated valves are not being overtested. 11 refs, 2 tabs

  19. On Polynomial Remainder Codes

    CERN Document Server

    Yu, Jiun-Hung

    2012-01-01

    Polynomial remainder codes are a large class of codes derived from the Chinese remainder theorem that includes Reed-Solomon codes as a special case. In this paper, we revisit these codes and study them more carefully than in previous work. We explicitly allow the code symbols to be polynomials of different degrees, which leads to two different notions of weight and distance. Algebraic decoding is studied in detail. If the moduli are not irreducible, the notion of an error locator polynomial is replaced by an error factor polynomial. We then obtain a collection of gcd-based decoding algorithms, some of which are not quite standard even when specialized to Reed-Solomon codes.

  20. Unresolved orthology and peculiar coding sequence properties of lamprey genes: the KCNA gene family as test case

    Directory of Open Access Journals (Sweden)

    Kuraku Shigehiro

    2011-06-01

    Full Text Available Abstract Background In understanding the evolutionary process of vertebrates, cyclostomes (hagfishes and lamprey occupy crucial positions. Resolving molecular phylogenetic relationships of cyclostome genes with gnathostomes (jawed vertebrates genes is indispensable in deciphering both the species tree and gene trees. However, molecular phylogenetic analyses, especially those including lamprey genes, have produced highly discordant results between gene families. To efficiently scrutinize this problem using partial genome assemblies of early vertebrates, we focused on the potassium voltage-gated channel, shaker-related (KCNA family, whose members are mostly single-exon. Results Seven sea lamprey KCNA genes as well as six elephant shark genes were identified, and their orthologies to bony vertebrate subgroups were assessed. In contrast to robustly supported orthology of the elephant shark genes to gnathostome subgroups, clear orthology of any sea lamprey gene could not be established. Notably, sea lamprey KCNA sequences displayed unique codon usage pattern and amino acid composition, probably associated with exceptionally high GC-content in their coding regions. This lamprey-specific property of coding sequences was also observed generally for genes outside this gene family. Conclusions Our results suggest that secondary modifications of sequence properties unique to the lamprey lineage may be one of the factors preventing robust orthology assessments of lamprey genes, which deserves further genome-wide validation. The lamprey lineage-specific alteration of protein-coding sequence properties needs to be taken into consideration in tackling the key questions about early vertebrate evolution.

  1. A Retrospective Look at 20 Years of ASM Education Programs (1990-2010 and a Prospective Look at the Next 20 Years (2011-2030

    Directory of Open Access Journals (Sweden)

    Amy Chang

    2011-03-01

    Full Text Available The Education Board of the American Society for Microbiology (ASM was established in the mid-1970s to address the graduate and medical education needs of ASM members. Since then, I have watched our offerings evolve from a small, graduate-level travel grant program for ASM meetings to a growing suite of professional development and networking opportunities including fellowships, publications, and conferences. Along the way, our audience has expanded from  graduate students to undergraduate biology and K-12 teachers, students of all ages, researchers, and the public.I have been fortunate enough to watch several pivotal programs and projects support our growth and change the status quo by providing opportunities for biology educators to flourish. These include the: (i Coalition for Education in the Life Sciences, (ii ASM Division on Microbiology Education, (iii ASM Conference for Undergraduate Educators, (iv ASM Journal of Microbiology & Biology Education, and (v ASM Fellowship Fund. In this review, the background and details I offer on each initiative help explain ASM Education offerings, how our growth has been supported, and where are we headed.

  2. code {poems}

    Directory of Open Access Journals (Sweden)

    Ishac Bertran

    2012-08-01

    Full Text Available "Exploring the potential of code to communicate at the level of poetry," the code­ {poems} project solicited submissions from code­writers in response to the notion of a poem, written in a software language which is semantically valid. These selections reveal the inner workings, constitutive elements, and styles of both a particular software and its authors.

  3. Application of InSAR and gravimetric surveys for developing construction codes in zones of land subsidence induced by groundwater extraction: case study of Aguascalientes, Mexico

    Science.gov (United States)

    Pacheco-Martínez, J.; Wdowinski, S.; Cabral-Cano, E.; Hernández-Marín, M.; Ortiz-Lozano, J. A.; Oliver-Cabrera, T.; Solano-Rojas, D.; Havazli, E.

    2015-11-01

    Interferometric Synthetic Aperture Radar (InSAR) has become a valuable tool for surface deformation monitoring, including land subsidence associated with groundwater extraction. Another useful tools for studying Earth's surface processes are geophysical methods such as Gravimetry. In this work we present the application of InSAR analysis and gravimetric surveying to generate valuable information for risk management related to land subsidence and surface faulting. Subsidence of the city of Aguascalientes, Mexico is presented as study case. Aguascalientes local governments have addressed land subsidence issues by including new requirements for new constructions projects in the State Urban Construction Code. Nevertheless, the resulting zoning proposed in the code is still subjective and not clearly defined. Our work based on gravimetric and InSAR surveys is aimed for improving the subsidence hazard zoning proposed in the State Urban Code in a more comprehensive way. The study includes a 2007-2011 ALOS InSAR time-series analysis of the Aguascalientes valley, an interpretation of the compete Bouguer gravimetric anomaly of the Aguascalientes urban area, and the application of time series and gravimetric anomaly maps for improve the subsidence hazard zoning of Aguascalientes City.

  4. Acid sphingomyelinase (Asm) deficiency patients in The Netherlands and Belgium: Disease spectrum and natural course in attenuated patients

    NARCIS (Netherlands)

    Hollak, C.E.M.; Sonnaville, E.S. de; Cassiman, D.; Linthorst, G.E.; Groener, J.E.M.; Morava, E.; Wevers, R.A.; Mannens, M.; Aerts, J.M.F.G.; Meersseman, W.; Akkerman, E.; Niezen-Koning, K.E.; Mulder, M.F.; Visser, G.; Wijburg, F.A.; Lefeber, D.; Poorthuis, B.J.H.M.

    2012-01-01

    Niemann-Pick disease (NPD) is a neurovisceral lysosomal storage disorder caused by acid sphingomyelinase (ASM) deficiency, which can be categorized as either Niemann-Pick disease type A [NPD-A], with progressive neurological disease and death in early childhood, or as Niemann-Pick disease type B [NP

  5. Acid sphingomyelinase (Asm) deficiency patients in The Netherlands and Belgium : Disease spectrum and natural course in attenuated patients

    NARCIS (Netherlands)

    Hollak, C. E. M.; de Sonnaville, E. S. V.; Cassiman, D.; Linthorst, G. E.; Groener, J. E.; Morava, E.; Wevers, R. A.; Mannens, M.; Aerts, J. M. F. G.; Meersseman, W.; Akkerman, E.; Niezen-Koning, K. E.; Mulder, M. F.; Visser, G.; Wijburg, F. A.; Lefeber, D.; Poorthuis, B. J. H. M.

    2012-01-01

    Niemann-Pick disease (NPD) is a neurovisceral lysosomal storage disorder caused by acid sphingomyelinase (ASM) deficiency, which can be categorized as either Niemann-Pick disease type A [NPD-A], with progressive neurological disease and death in early childhood, or as Niemann-Pick disease type B [NP

  6. Using ASM Podcasts to Excite Undergraduate Students about Current Microbiological Research

    Directory of Open Access Journals (Sweden)

    Stacey E. Lettini

    2014-08-01

    Full Text Available Innovative technology is often used as a mechanism to engage students in and out of the classroom and can be used to increase critical thinking skills. Podcasts are an excellent way to introduce students to current topics and research in microbiology. The American Society for Microbiology (ASM produces three podcasts that are microbiologically focused: This Week in Microbiology (TWiM, This Week in Parasitology (TWiP, and This Week in Virology (TWiV. These podcasts are usually presented in a manner similar to a journal club, as the presenters regularly invite guests to discuss current research papers. Since students often find reading scientific literature difficult and get bogged down in the details rather than seeing the over-arching purpose of a paper, these podcasts have been used in a General Microbiology course to introduce recent research articles. The students were first assigned an original research article to read and review, and they were asked to generate questions pertaining to things they did not understand. Next, students listened to the corresponding podcast that discussed the article and used it to answer their questions. This was followed by a classroom discussion of the article and the podcast. The ASM podcast helped to demystify original research by providing details of the experimental design and presentation of the results in a language that is more casual and relatable. Students demonstrated greater critical thinking and comprehension of microbiology literature after listening to the podcast. This activity can be used in a variety of courses in the biology curriculum.

  7. Corticosteroid-Induced MKP-1 Represses Pro-Inflammatory Cytokine Secretion by Enhancing Activity of Tristetraprolin (TTP) in ASM Cells.

    Science.gov (United States)

    Prabhala, Pavan; Bunge, Kristin; Ge, Qi; Ammit, Alaina J

    2016-10-01

    Exaggerated cytokine secretion drives pathogenesis of a number of chronic inflammatory diseases, including asthma. Anti-inflammatory pharmacotherapies, including corticosteroids, are front-line therapies and although they have proven clinical utility, the molecular mechanisms responsible for their actions are not fully understood. The corticosteroid-inducible gene, mitogen-activated protein kinase (MAPK) phosphatase 1 (MKP-1, DUSP1) has emerged as a key molecule responsible for the repressive effects of steroids. MKP-1 is known to deactivate p38 MAPK phosphorylation and can control the expression and activity of the mRNA destabilizing protein-tristetraprolin (TTP). But whether corticosteroid-induced MKP-1 acts via p38 MAPK-mediated modulation of TTP function in a pivotal airway cell type, airway smooth muscle (ASM), was unknown. While pretreatment of ASM cells with the corticosteroid dexamethasone (preventative protocol) is known to reduce ASM synthetic function in vitro, the impact of adding dexamethasone after stimulation (therapeutic protocol) had not been explored. Whether dexamethasone modulates TTP in a p38 MAPK-dependent manner in this cell type was also unknown. We address this herein and utilize an in vitro model of asthmatic inflammation where ASM cells were stimulated with the pro-asthmatic cytokine tumor necrosis factor (TNF) and the impact of adding dexamethasone 1 h after stimulation assessed. IL-6 mRNA expression and protein secretion was significantly repressed by dexamethasone acting in a temporally distinct manner to increase MKP-1, deactivate p38 MAPK, and modulate TTP phosphorylation status. In this way, dexamethasone-induced MKP-1 acts via p38 MAPK to switch on the mRNA destabilizing function of TTP to repress pro-inflammatory cytokine secretion from ASM cells. J. Cell. Physiol. 231: 2153-2158, 2016. © 2016 Wiley Periodicals, Inc. PMID:26825339

  8. Verification of Allowable Stresses In ASME Section III Subsection NH For Grade 91 Steel & Alloy 800H

    Energy Technology Data Exchange (ETDEWEB)

    R. W. Swindeman; M. J. Swindeman; B. W. Roberts; B. E. Thurgood; D. L. Marriott

    2007-11-30

    The database for the creep-rupture of 9Cr-1Mo-V (Grade 91) steel was collected and reviewed to determine if it met the needs for recommending time-dependent strength values, S{sub t}, for coverage in ASME Section III Subsection NH (ASME III-NH) to 650 C (1200 F) and 600,000 hours. The accumulated database included over 300 tests for 1% total strain, nearly 400 tests for tertiary creep, and nearly 1700 tests to rupture. Procedures for analyzing creep and rupture data for ASME III-NH were reviewed and compared to the procedures used to develop the current allowable stress values for Gr 91 for ASME II-D. The criteria in ASME III-NH for estimating S{sub t} included the average strength for 1% total strain for times to 600,000 hours, 80% of the minimum strength for tertiary creep for times to 600,000 hours, and 67% of the minimum rupture strength values for times to 600,000 hours. Time-temperature-stress parametric formulations were selected to correlate the data and make predictions of the long-time strength. It was found that the stress corresponding to 1% total strain and the initiation of tertiary creep were not the controlling criteria over the temperature-time range of concern. It was found that small adjustments to the current values in III-NH could be introduced but that the existing values were conservative and could be retained. The existing database was found to be adequate to extend the coverage to 600,000 hours for temperatures below 650 C (1200 F).

  9. Holographic codes

    CERN Document Server

    Latorre, Jose I

    2015-01-01

    There exists a remarkable four-qutrit state that carries absolute maximal entanglement in all its partitions. Employing this state, we construct a tensor network that delivers a holographic many body state, the H-code, where the physical properties of the boundary determine those of the bulk. This H-code is made of an even superposition of states whose relative Hamming distances are exponentially large with the size of the boundary. This property makes H-codes natural states for a quantum memory. H-codes exist on tori of definite sizes and get classified in three different sectors characterized by the sum of their qutrits on cycles wrapped through the boundaries of the system. We construct a parent Hamiltonian for the H-code which is highly non local and finally we compute the topological entanglement entropy of the H-code.

  10. Coding and Experience of 4 Rare Cases of Difficult and Complicated Disease%4例少见疑难疾病编码及体会

    Institute of Scientific and Technical Information of China (English)

    刘王斌

    2011-01-01

    目的 探讨橡皮泡痣综合征、毛囊闭锁三联症、普杰综合征、Megie's 病4例少见疾病的ICD-10的编码.方法 通过对4例少见疾病相关资料的学习,按照国际疾病地分类原则逐一给予编码.结果 对于少见疑难疾病的编码一般都不能直接在ICD-10 中直接找到,必须根据疾病的主要病因、病理、临床表现和解剖部位等特征,灵活变换主导词查找编码.结论 为保证一些少见疾病编码的准确性,除了加强国际疾病分类的专业知识和技能外,更要具有高度的责任心,仔细阅读病案,向临床医师及经验丰富的编码员请教,查找相关的医学书籍和文献.%O bjectives to discuss IC D -10 coding of 4 cases rare disease w hich are rubber bleb nevus syndrom e,follicular occlusion triad,P eutz-Jeghers syndrom e and M egie's syndrom e.M ethods T hrough learning about related m aterials of these 4 cases,w e give them coding one by one accordingto the principles of international classification of disease.R esults T he coding for rare difficult and com plicated diseases usually can not be found directlyin IC D -10.It needs to change the leading w ords flexibly according to the m ain etiology,pathology,clinical m anifestation and anatom ical region.C onclusions T o ensure the accuracy of coding about rare diseases,besides professional know ledge and technique strengthening,w e need high responsibility,careful reading of m edical records,consultation to clinical doctors,w ell experienced coders and related m edical books and literatures.

  11. CODE PREFERENCES OF 1st YEAR UNDERGRADUATE STUDENTS – CASE STUDY OF “SOCIOLOGY OF DISPOSITIONAL GROUPS” STUDENTS

    Directory of Open Access Journals (Sweden)

    Kamil Błaszczyński

    2015-12-01

    Full Text Available Because of the formal and non-formal changes which are taking place in Polish higher education, the role and function of the university is also changing. Contemporary Polish students consider higher education as one of the phases of their career. The new generations of students expect rapid and effective education, perceiving academic education as a purchase of services or professional training. The aim of the study was to diagnose if those trends are visible also in the processes of communication between the students and the academic staff. To verify this thesis, the author diagnoses the language expression of students, in the form of essay writing. Expressions were analysed quantitatively and were correlated with some chosen indicators of the students social background. Results indicated that students language expression could be divided into three types: mixed, restricted and elaborate expression. Each of those types can be classified as social codes, which have their own features. Gathered data only partially confirmed the hypothesis tested by the author. Because of the low scale of the study, it can only be considered an inspiration for other researchers and future studies on a high-scale level.

  12. Regulation and innovation dynamics for nanoresponsible development: The case of the French code de l'environnement L 523-1 to L 523-5

    Science.gov (United States)

    Auplat, C.; Ben Slimane, S.

    2015-05-01

    This paper examines one aspect of innovation dynamics for nanoresponsible development: the links between regulation and innovation dynamics. It focuses on the case of the French Code de l'environnement, Articles L. 523-1 to L. 523-3. Articles L. 523-1 to L. 523-3 of the French environment code provide for the obligation to declare the quantities and uses of substances at nanoscale produced, distributed or imported in France. This procedure is intended to improve knowledge of these substances and their uses as well as of their markets and volumes sold, to ensure traceability and to collect available information on their toxicological and ecotoxicological properties. The paper builds on recent work on the emergence of a regulatory framework for nanotechnologies to take stock of the current situation in France, in the EU and globally and to explore how this specific law package may influence innovation and the shaping of new markets for nanobased materials. The study shows that nano-regulation does have an impact on innovation. However, the impact is not the same with EU regulation and with French regulation, and while EU regulation seems to create a favourable context for innovation, French regulation seems to do the opposite. With this study we hope to bring new perspectives to the field of the strategic management of innovation, and also to shed some light on the roles and challenges of institutions to facilitate nanoresponsible development.

  13. Validation of Neutron Calculation Codes and Models by means of benchmark cases in the frame of the Binational Commission of Nuclear Energy. Criticality Experiments

    International Nuclear Information System (INIS)

    In year 2008 the Atomic Energy National Commission (CNEA) of Argentina, and the Brazilian Institute of Energetic and Nuclear Research (IPEN), under the frame of Nuclear Energy Argentine Brazilian Agreement (COBEN), among many others, included the project “Validation and Verification of Calculation Methods used for Research and Experimental Reactors. At this time, it was established that the validation was to be performed with models implemented in the deterministic codes HUEMUL and PUMA (cell and reactor codes) developed by CNEA and those ones implemented in MCNP by CNEA and IPEN. The necessary data for these validations would correspond to theoretical-experimental reference cases in the research reactor IPEN/MB-01 located in São Paulo, Brazil. The staff of the group Reactor and Nuclear Power Studies (SERC) of CNEA, from the argentine side, performed calculations with deterministic models (HUEMUL-PUMA) and probabilistic methods (MCNP) modeling a great number of physical situations of de reactor, which previously have been studied and modeled by members of the Center of Nuclear Engineering of the IPEN, whose results were extensively provided to CNEA. In this paper results for critical configurations are shown. (author)

  14. Reliability in Source Coding with Side Information

    OpenAIRE

    Kelly, Benjamin G.; Wagner, Aaron B.

    2011-01-01

    We study error exponents for source coding with side information. Both achievable exponents and converse bounds are obtained for the following two cases: lossless source coding with coded information (SCCSI) and lossy source coding with full side information (Wyner-Ziv). These results recover and extend several existing results on source-coding error exponents and are tight in some circumstances. Our bounds have a natural interpretation as a two-player game between nature and the code designe...

  15. Contrastive Analysis of ASME Standards for Route Design of Hydrogen and Natural Gas Long-distance Transportation Pipeline%氢气与天然气长输管道线路设计ASME 标准对比分析

    Institute of Scientific and Technical Information of China (English)

    蒋庆梅; 张小强

    2015-01-01

    Contrasts were made about pipe material selection,pipeline design,pipeline welding and nonde-structive testing,pressure test,valves,cover,clearance,and casing requirements for buried long-distance transportation pipeline in ASME B31.12—2014 and ASME B31.8—2014,and conclusions are as fol-lows:compared with the design of gas transmission pipeline,pipe material selection of hydrogen transmis-sion pipeline has certain constraints,material performance factor is considered in the straight pipe design formula,hot bends design method and pressure test medium and requirements are different.The require-ments for preheating and post weld heat treatment,cover,clearance between pipelines and other under-ground structures,and casing under railroads,highways,roads or streets,etc.are stricter than that for gas transmission pipeline.The requirements for cold bends,nondestructive testing,valves and leak test are consistent with that for gas transmission pipeline.In order to ensure the safety and reliability of pipe,a comprehensive analysis need to be done when using the existing natural gas pipeline infrastructure for hy-drogen transport and converting natural gas pipelines into hydrogen pipelines.%对 ASME B31.12—2014与 ASME B31.8—2014关于埋地长输管道线路设计部分中管材选择、管道设计、管道焊接及无损检测、管道试压、管道阀室、埋深、间距等方面进行了对比分析,得出:与天然气长输管道设计相比,氢气长输管道用钢管选材存在一定限制条件,其直管段钢管设计公式中考虑了材料性能系数的影响,热煨弯管设计方法不同,强度试压介质及试压压力值存在差别,在钢管焊前预热及焊后热处理、埋地管道最小覆土厚度、与地下其他管道和建构筑物间距及穿越公(铁)路套管要求等方面要求更严格。氢气与天然气长输管道对冷弯弯管、环焊缝无损检测、阀室设置以及严密

  16. Developing a methodology for the evaluation of results uncertainties in CFD codes; Desarrollo de una Metodologia para la Evaluacion de Incertidumbres en los Resultados de Codigos de CFD

    Energy Technology Data Exchange (ETDEWEB)

    Munoz-cobo, J. L.; Chiva, S.; Pena, C.; Vela, E.

    2014-07-01

    In this work the development of a methodology is studied to evaluate the uncertainty in the results of CFD codes and is compatible with the VV-20 standard Standard for Verification and Validation in CFD and Heat Transfer {sup ,} developed by the Association of Mechanical Engineers ASME . Similarly, the alternatives are studied for obtaining existing uncertainty in the results to see which is the best choice from the point of view of implementation and time. We have developed two methods for calculating uncertainty of the results of a CFD code, the first method based on the use of techniques of Monte-Carlo for the propagation of uncertainty in this first method we think it is preferable to use the statistics of the order to determine the number of cases to execute the code, because this way we can always determine the confidence interval desired level of output quantities. The second type of method we have developed is based on non-intrusive polynomial chaos. (Author)

  17. Towards a consensus-based biokinetic model for green microalgae – The ASM-A

    DEFF Research Database (Denmark)

    Wágner, Dorottya Sarolta; Valverde Pérez, Borja; Sæbø, Mariann;

    2016-01-01

    and substrate availability can introduce significant variability on parameter values for predicting the reaction rates for bulk nitrate and the intracellularly stored nitrogen state-variables, thereby requiring scenario specific model calibration. ASM-A was identified using standard cultivation medium...... the systematic approach of the activated sludge modelling (ASM) framework. The process model – identified based on a literature review and using new experimental data – accounts for factors influencing photoautotrophic and heterotrophic microalgal growth, nutrient uptake and storage (i.e. Droop model) and decay...... was assessed. The model can effectively describe microalgal biomass growth, ammonia and phosphate concentrations as well as the phosphorus storage using a set of average parameter values estimated with the experimental data. A statistical analysis of simulation and measured data suggests that culture history...

  18. Función adrenal y metabolismo lipídico en niños asmáticos tratados con budesonida

    OpenAIRE

    Paoli-de Valeri Mariela; Zerpa-de Miliani Yajaira; Valeri-Dávila Ezio G.; Bellabarba Gabriela

    1999-01-01

    Objetivo. Evaluar el efecto de bajas dosis de budesonida inhalado sobre la función adrenal y el metabolismo lipídico en niños asmáticos. Material y métodos. Se estudiaron: 10 niños asmáticos (edad promedio, 8.6 años) tratados con budesonida inhalado (200-300 µg/día) por un lapso mayor a tres meses (grupo A); 15 niños asmáticos (edad promedio, 7.8 años) sin tratamiento esteroideo (grupo B), y 10 niños no asmáticos (grupo C). Se determinaron los niveles de cortisol basal y postestímulo con ACTH...

  19. Performance of New Attached Sync Markers for Turbo-Code Frame Svnchronization%一种新的Turbo码同步字模板的性能研究

    Institute of Scientific and Technical Information of China (English)

    朱宏权; 王俊峰

    2011-01-01

    Following a brief introduction of turbo-code frame synchronization in CCSDS recommendations and ASM (Attached Sync Marker) , the performance of autocorrelation function and peak-side lobe is analyzed. Then, a new ASM pattern with better autocorrelation function is proposed. Simulation and analysis of ASM detection in noisy environment shows that the new ASMs with a length of 128 bits and 192bits have much better synchronization performance than CCSDS ASMs with the same length.%介绍了CCSDS(空间数据系统咨询委员会)建议中不同编码率下的Turbo码同步字模板,分析了其自相关函数及峰值副瓣电平特性,据此提出了具有更好自相关函数的新同步字模板.通过对2种同步字的接收机同步检测性能的仿真分析,发现在同步字长度为128 bit和192 bit的情况下,新同步字模板在漏检率、错锁率等同步性能上得到较大改善.

  20. An Analysis of Language Code Used by the Cross- Married Couples, Banjarese- Javanese Ethnics: A Case Study in South Kalimantan Province, Indonesia

    OpenAIRE

    - Supiani

    2016-01-01

    This research aims to describe the use of language code applied by the participants and to find out the factors influencing the choice of language codes. This research is qualitative research that describe the use of language code in the cross married couples. The data are taken from the discourses about language code phenomena dealing with the cross- married couples, Banjarese- Javanese ethnics in Tanah Laut regency South Kalimantan, Indonesia. The conversations occur in the family and socia...

  1. Speaking Code

    DEFF Research Database (Denmark)

    Cox, Geoff

    development, Speaking Code unfolds an argument to undermine the distinctions between criticism and practice, and to emphasize the aesthetic and political aspects of software studies. Not reducible to its functional aspects, program code mirrors the instability inherent in the relationship of speech......; alternatives to mainstream development, from performances of the live-coding scene to the organizational forms of commons-based peer production; the democratic promise of social media and their paradoxical role in suppressing political expression; and the market’s emptying out of possibilities for free...... expression in the public realm. The book’s line of argument defends language against its invasion by economics, arguing that speech continues to underscore the human condition, however paradoxical this may seem in an era of pervasive computing....

  2. A Main Steam Safety Valve (MSSV) With Fixed Blowdown According to ASME Section III,Part NC-7512

    International Nuclear Information System (INIS)

    In 1986, the NRC issued the Information Notice (IN) 86-05 'Main Steam Safety Valve test failures and ring setting adjustments'. Shortly after this IN was issued, the Code was revised to require that a full flow test has to be performed on each CL.2 MSSV by the manufacturer to verify that the valve was adjusted so that it would reach full lift and thus full relieving capacity and would re-close at a pressure as specified in the valve Design Specification. In response to the concern discussed in the IN, the Westinghouse Owners Group (WOG) performed extensive full flow testing on PWR MSSVs and found that each valve required a unique setting of a combination of two rings in order to achieve full lift at accumulation of 3% and re-closing at a blowdown of 5%. The Bopp and Reuther MSSV type SiZ 2507 has a 'fixed blowdown' i.e. without any adjusting rings to adjust the 'blowdown' so that the blowdown is 'fixed'. More than 1000 pieces of this type are successfully in nuclear power plants in operation. Many of them since about 25 years. Therefore it can be considered as a proven design. It is new that an optimization of this MSSV type SiZ 2507 fulfill the requirements of part NC-7512 of the ASME Section III although there are still no adjusting rings in the flow part. In 2000, for the Qinshan Candu unit 1 and 2 full flow tests were performed with 32 MSSV type SiZ 2507 size 8'' x 12'' at 51 bar saturated steam in only 6 days. In all tests the functional performance was very stable. It was demonstrated by recording the signals lift and system pressure that all valves had acceptable results to achieve full lift at accumulation of 3% and to re-close at blowdown of 5%. This is an advantage which gives a reduction in cost for flow tests and which gives more reliability after maintenance work during outage compared to the common MSSV design with an individual required setting of the combination of the two rings. The design of the type SiZ 2507 without any adjusting rings in the

  3. Changing priorities of codes and standards -- quality engineering: Experiences in plant construction, maintenance, and operation

    International Nuclear Information System (INIS)

    Application of the ASME Code across various fossil and nuclear plants necessitates a Company approach adapted by unique status of each plant. This arises from State Statutes, Federal Regulations and consideration of each plant's as-built history over a broad time frame of design, construction and operation. Additionally, the National Board Inspection Code accompanies Minnesota Statutes for plants owned by Northern States Power Company. This paper addresses some key points on NSP's use of ASME Code as a principal mechanical standard in plant design, construction and operation. A primary resource facilitating review of Code provisions is accurate status on current plant configuration. As plant design changes arise, the Code Edition/Addenda of original construction and installed upgrades or replacements are considered against available options allowed by current standards and dialog with the Jurisdictional Authority. Consistent with the overall goal of safe and reliable plant operation, there are numerous Code details and future needs to be addressed in concert with expected plant economics and planned outages for implementation. The discussion begins in the late 60's with new construction of Monticello and Prairie Island (both nuclear), through Sherburne County Units 1 through 3 (fossil), and their changes, replacements or repairs as operating plants

  4. Assessment of the effectiveness of ASME Section XI pump and valve surveillance testing

    International Nuclear Information System (INIS)

    The effectiveness of the pump and valve surveillance testing currently performed in accordance with ASME Section XI requirements was assessed. The assessment was based on a pilot comparison of actual in plant Section XI testing results to reported component degradation/failure histories obtained from NPRDS for two nuclear units over a period of four years. An evaluation was performed on a component by component basis evaluating Section XI testing results, i.e., measured stroke times, vibration levels, etc., for all pumps and valves for which component degradations/failures were reported. The intent was to determine the extent to which specific testing methods actually detected or predicted specific component degradation types. The statistical data base (two plants over four years) was insufficient to allow firm conclusions. However, the results do provide an indication of the effectiveness of specific Section XI tests in detecting/predicting specific degradation/failure types. The seat leakage testing for valves was found to be effective in detecting existing degradation but could not be trended to predict future leak rates. Stroke time testing of motor and air operated valves was, in general, ineffective in either detection of existing degradation or prediction of incipient failure. Vibration testing (displacement) of pumps was found to be somewhat effective in both detection and prediction of high vibration levels. Likewise, DP/Flow testing was found to be somewhat effective in detecting low flow conditions. However, no assessment could be made regarding the relationship between a low flow test result obtained under mini-flow conditions and actual pump degradation. The data were insufficient to assess the effectiveness of DP/Flow testing in predicting future flow anomalies

  5. The Aster code; Code Aster

    Energy Technology Data Exchange (ETDEWEB)

    Delbecq, J.M

    1999-07-01

    The Aster code is a 2D or 3D finite-element calculation code for structures developed by the R and D direction of Electricite de France (EdF). This dossier presents a complete overview of the characteristics and uses of the Aster code: introduction of version 4; the context of Aster (organisation of the code development, versions, systems and interfaces, development tools, quality assurance, independent validation); static mechanics (linear thermo-elasticity, Euler buckling, cables, Zarka-Casier method); non-linear mechanics (materials behaviour, big deformations, specific loads, unloading and loss of load proportionality indicators, global algorithm, contact and friction); rupture mechanics (G energy restitution level, restitution level in thermo-elasto-plasticity, 3D local energy restitution level, KI and KII stress intensity factors, calculation of limit loads for structures), specific treatments (fatigue, rupture, wear, error estimation); meshes and models (mesh generation, modeling, loads and boundary conditions, links between different modeling processes, resolution of linear systems, display of results etc..); vibration mechanics (modal and harmonic analysis, dynamics with shocks, direct transient dynamics, seismic analysis and aleatory dynamics, non-linear dynamics, dynamical sub-structuring); fluid-structure interactions (internal acoustics, mass, rigidity and damping); linear and non-linear thermal analysis; steels and metal industry (structure transformations); coupled problems (internal chaining, internal thermo-hydro-mechanical coupling, chaining with other codes); products and services. (J.S.)

  6. Decoding of concatenated codes with interleaved outer codes

    DEFF Research Database (Denmark)

    Justesen, Jørn; Høholdt, Tom; Thommesen, Christian

    2004-01-01

    Recently Bleichenbacher et al. proposed a decoding algorithm for interleaved (N, K) Reed-Solomon codes, which allows close to N-K errors to be corrected in many cases. We discuss the application of this decoding algorithm to concatenated codes....

  7. Optimal codes as Tanner codes with cyclic component codes

    DEFF Research Database (Denmark)

    Høholdt, Tom; Pinero, Fernando; Zeng, Peng

    2014-01-01

    In this article we study a class of graph codes with cyclic code component codes as affine variety codes. Within this class of Tanner codes we find some optimal binary codes. We use a particular subgraph of the point-line incidence plane of A(2,q) as the Tanner graph, and we are able to describe...... the codes succinctly using Gröbner bases....

  8. MCNP code

    International Nuclear Information System (INIS)

    The MCNP code is the major Monte Carlo coupled neutron-photon transport research tool at the Los Alamos National Laboratory, and it represents the most extensive Monte Carlo development program in the United States which is available in the public domain. The present code is the direct descendent of the original Monte Carlo work of Fermi, von Neumaum, and Ulam at Los Alamos in the 1940s. Development has continued uninterrupted since that time, and the current version of MCNP (or its predecessors) has always included state-of-the-art methods in the Monte Carlo simulation of radiation transport, basic cross section data, geometry capability, variance reduction, and estimation procedures. The authors of the present code have oriented its development toward general user application. The documentation, though extensive, is presented in a clear and simple manner with many examples, illustrations, and sample problems. In addition to providing the desired results, the output listings give a a wealth of detailed information (some optional) concerning each state of the calculation. The code system is continually updated to take advantage of advances in computer hardware and software, including interactive modes of operation, diagnostic interrupts and restarts, and a variety of graphical and video aids

  9. ANIMAL code

    International Nuclear Information System (INIS)

    This report describes ANIMAL, a two-dimensional Eulerian magnetohydrodynamic computer code. ANIMAL's physical model also appears. Formulated are temporal and spatial finite-difference equations in a manner that facilitates implementation of the algorithm. Outlined are the functions of the algorithm's FORTRAN subroutines and variables

  10. A methodology for the analysis of protection against overpressure using the Ramona-3 B code

    International Nuclear Information System (INIS)

    A methodology to carry out the most severe overpressure transient that could happen at Laguna Verde Nuclear power Plant is presented, this study is a requirement as a part of the licensing analysis in a fuel reload. The analysis is put into effect with the Ramona 3-B code. The results are compared against the safety analysis report of the Laguna Verde Nuclear Power Plant. The aim of the analysis is to determine the maximum pressure reached on the reactor vessel during operational events, in order to demonstrate agreement with the ASME code for Containers and Pressure Vessels. (Author)

  11. Code qualification of structural materials for AFCI advanced recycling reactors.

    Energy Technology Data Exchange (ETDEWEB)

    Natesan, K.; Li, M.; Majumdar, S.; Nanstad, R.K.; Sham, T.-L. (Nuclear Engineering Division); (ORNL)

    2012-05-31

    This report summarizes the further findings from the assessments of current status and future needs in code qualification and licensing of reference structural materials and new advanced alloys for advanced recycling reactors (ARRs) in support of Advanced Fuel Cycle Initiative (AFCI). The work is a combined effort between Argonne National Laboratory (ANL) and Oak Ridge National Laboratory (ORNL) with ANL as the technical lead, as part of Advanced Structural Materials Program for AFCI Reactor Campaign. The report is the second deliverable in FY08 (M505011401) under the work package 'Advanced Materials Code Qualification'. The overall objective of the Advanced Materials Code Qualification project is to evaluate key requirements for the ASME Code qualification and the Nuclear Regulatory Commission (NRC) approval of structural materials in support of the design and licensing of the ARR. Advanced materials are a critical element in the development of sodium reactor technologies. Enhanced materials performance not only improves safety margins and provides design flexibility, but also is essential for the economics of future advanced sodium reactors. Code qualification and licensing of advanced materials are prominent needs for developing and implementing advanced sodium reactor technologies. Nuclear structural component design in the U.S. must comply with the ASME Boiler and Pressure Vessel Code Section III (Rules for Construction of Nuclear Facility Components) and the NRC grants the operational license. As the ARR will operate at higher temperatures than the current light water reactors (LWRs), the design of elevated-temperature components must comply with ASME Subsection NH (Class 1 Components in Elevated Temperature Service). However, the NRC has not approved the use of Subsection NH for reactor components, and this puts additional burdens on materials qualification of the ARR. In the past licensing review for the Clinch River Breeder Reactor Project (CRBRP

  12. Energy information data base: report number codes

    International Nuclear Information System (INIS)

    Each report processed by the US DOE Technical Information Center is identified by a unique report number consisting of a code plus a sequential number. In most cases, the code identifies the originating installation. In some cases, it identifies a specific program or a type of publication. Listed in this publication are all codes that have been used by DOE in cataloging reports. This compilation consists of two parts. Part I is an alphabetical listing of report codes identified with the issuing installations that have used the codes. Part II is an alphabetical listing of installations identified with codes each has used

  13. Energy information data base: report number codes

    Energy Technology Data Exchange (ETDEWEB)

    None

    1979-09-01

    Each report processed by the US DOE Technical Information Center is identified by a unique report number consisting of a code plus a sequential number. In most cases, the code identifies the originating installation. In some cases, it identifies a specific program or a type of publication. Listed in this publication are all codes that have been used by DOE in cataloging reports. This compilation consists of two parts. Part I is an alphabetical listing of report codes identified with the issuing installations that have used the codes. Part II is an alphabetical listing of installations identified with codes each has used. (RWR)

  14. Code query by example

    Science.gov (United States)

    Vaucouleur, Sebastien

    2011-02-01

    We introduce code query by example for customisation of evolvable software products in general and of enterprise resource planning systems (ERPs) in particular. The concept is based on an initial empirical study on practices around ERP systems. We motivate our design choices based on those empirical results, and we show how the proposed solution helps with respect to the infamous upgrade problem: the conflict between the need for customisation and the need for upgrade of ERP systems. We further show how code query by example can be used as a form of lightweight static analysis, to detect automatically potential defects in large software products. Code query by example as a form of lightweight static analysis is particularly interesting in the context of ERP systems: it is often the case that programmers working in this field are not computer science specialists but more of domain experts. Hence, they require a simple language to express custom rules.

  15. Modeling Nitrous Oxide Production during Biological Nitrogen Removal via Nitrification and Denitrification: Extensions to the General ASM Models

    DEFF Research Database (Denmark)

    Ni, Bing-Jie; Ruscalleda, Maël; Pellicer i Nàcher, Carles;

    2011-01-01

    Nitrous oxide (N2O) can be formed during biological nitrogen (N) removal processes. In this work, a mathematical model is developed that describes N2O production and consumption during activated sludge nitrification and denitrification. The well-known ASM process models are extended to capture N2O...... the four denitrification steps, the last one (N2O reduction to N2) seems to be inhibited first when O2 is present. Overall, N2O production can account for 0.1–25% of the consumed N in different nitrification and denitrification systems, which can be well simulated by the proposed model. In conclusion, we...

  16. Scope and implementation of standards ASME N510 / N511 in air treatment system (HVAC) of the Asco nuclear power plant; Alcance e implementacion de las normas ASME N511 en el sistema de tratamiento de aire (HVAC) de la central nuclear de Asco

    Energy Technology Data Exchange (ETDEWEB)

    Jaimot Jimenez, J. J.

    2013-07-01

    With the ITC for renewal of license units 1 and 2 of Asco, the CSN It required the commissioning tests underway in the air, according to ASME N510 filter units. It is required that, for safety-related units, to undertake preventive inspections according to ASME N511. All these requirements, in tight deadlines, have represented a great challenge for the organizations of maintenance and engineering of ANAV.

  17. NOVEL BIPHASE CODE -INTEGRATED SIDELOBE SUPPRESSION CODE

    Institute of Scientific and Technical Information of China (English)

    Wang Feixue; Ou Gang; Zhuang Zhaowen

    2004-01-01

    A kind of novel binary phase code named sidelobe suppression code is proposed in this paper. It is defined to be the code whose corresponding optimal sidelobe suppression filter outputs the minimum sidelobes. It is shown that there do exist sidelobe suppression codes better than the conventional optimal codes-Barker codes. For example, the sidelobe suppression code of length 11 with filter of length 39 has better sidelobe level up to 17dB than that of Barker code with the same code length and filter length.

  18. From concatenated codes to graph codes

    DEFF Research Database (Denmark)

    Justesen, Jørn; Høholdt, Tom

    2004-01-01

    We consider codes based on simple bipartite expander graphs. These codes may be seen as the first step leading from product type concatenated codes to more complex graph codes. We emphasize constructions of specific codes of realistic lengths, and study the details of decoding by message passing...... in trees....

  19. Concatenated codes with convolutional inner codes

    DEFF Research Database (Denmark)

    Justesen, Jørn; Thommesen, Christian; Zyablov, Viktor

    1988-01-01

    The minimum distance of concatenated codes with Reed-Solomon outer codes and convolutional inner codes is studied. For suitable combinations of parameters the minimum distance can be lower-bounded by the product of the minimum distances of the inner and outer codes. For a randomized ensemble of...... concatenated codes a lower bound of the Gilbert-Varshamov type is proved...

  20. Intervención educativa para población infanto-juvenil asmática

    Directory of Open Access Journals (Sweden)

    Maria Antonia Acevedo Veja

    2015-11-01

    Full Text Available Se realizó una intervención educativa a la población infanto-juvenil asmática con edades entre ocho y once años en el policlínico de Manatí, Las Tunas, entre enero y julio de 2012, con el objetivo de evaluar la eficacia de la misma. La población de estudio estuvo formada por los 258 pacientes asmáticos de los 29 Consultorios de Médico de Familia (CMF del área, y la muestra por los 50 seleccionados por muestreo aleatorio simple. La información se obtuvo mediante un cuestionario que fue aplicado antes y después de la intervención educativa y los datos fueron recogidos durante la consulta y de la historia clínica individual. Se concluyó que predominó el sexo masculino, con antecedentes de primera línea de asma bronquial, con factores desencadenantes tales como: infecciones respiratorias agudas, polvo y humedad, así como aquellos que presentan signos clínicos de reflujo y que tienen una mala técnica de aplicación de spray. Se apreció un insuficiente nivel de conocimientos sobre la evaluación de severidad de la crisis, los factores desencadenantes, el manejo del spray y el tratamiento intercrisis, y las exacerbaciones.

  1. Alteraciones espirométricas en pacientes asmáticos del municipio Majibacoa, 2009-2013

    Directory of Open Access Journals (Sweden)

    Mailin Molina Leyva

    2014-08-01

    Full Text Available Se realizó un estudio descriptivo, con el objetivo de identificar alteraciones espirométricas en pacientes asmáticos del municipio Majibacoa, en el período comprendido desde enero del 2009 a enero del 2013. La muestra se integró por cincuenta pacientes asmáticos con más de 20 años de evolución de la enfermedad. Se les realizó previo consentimiento informado y una prueba espirométrica. Predominó el sexo femenino y las edades comprendidas entre 35 y 54 años. Prevalecieron los pacientes en la categoría de asma persistente severa. El volumen espiratorio forzado del primer segundo se comportó patológico en el mayor por ciento de los pacientes y la capacidad vital forzada mostró alteración en un menor número de pacientes. El patrón espirométrico obstructivo fue el más frecuente en los pacientes estudiados

  2. Modification of ASM3 for the determination of biomass adsorption/storage capacity in bulking sludge control.

    Science.gov (United States)

    Makinia, J; Rosenwinkel, K H; Phan, L C

    2006-01-01

    The selector activated sludge (SAS) systems are known to prevent excessive growth of filamentous microorganisms responsible for bulking sludge, but these systems were hardly ever modelled. This study aimed to develop a model capable of predicting rapid substrate removal in the SAS systems. For this purpose, the Activated Sludge Model No. 3 (ASM3) was extended with three processes (adsorption, direct growth on the adsorbed substrate under aerobic or anoxic conditions). The modified ASM3 was tested against the results of batch experiments with the biomass originating from two full-scale SAS systems in Germany. The endogenous biomass was mixed with various readily biodegradable substrates (acetate, peptone, glucose and wastewater) and the utilisation of substrate (expresses as COD) and oxygen uptake rates (OURs) were measured during the experiments. In general, model predictions fitted to the experimental data, but a considerable number of kinetic (5) and stoichiometric (2) parameters needed to be adjusted during model calibration. The simulation results revealed that storage was generally a dominating process compared to direct growth in terms of the adsorbed substrate utilisation. The contribution of storage ranged from 65-71% (Plant A) and 69-92% (Plant B). PMID:16605021

  3. Quantum Cyclic Code

    CERN Document Server

    Dutta, Sagarmoy

    2010-01-01

    In this paper, we define and study \\emph{quantum cyclic codes}, a generalisation of cyclic codes to the quantum setting. Previously studied examples of quantum cyclic codes were all quantum codes obtained from classical cyclic codes via the CSS construction. However, the codes that we study are much more general. In particular, we construct cyclic stabiliser codes with parameters $[[5,1,3

  4. RXTE/ASM and Swift/BAT Observations of Spectral Transitions in Bright X-ray Binaries in 2005-2010

    OpenAIRE

    Tang, Jing; Yu, Wenfei; Yan, Zhen

    2010-01-01

    We have studied X-ray spectral state transitions that can be seen in the long- term monitoring light curves of bright X-ray binaries from the All-Sky Monitor (ASM) on board the Rossi X-ray Timing Explorer (RXTE) and the Burst Alert Telescope (BAT) on board Swift during a period of five years from 2005 to 2010. We have applied a program to automatically identify the hard-to-soft (H-S) spectral state transitions in the bright X- ray binaries monitored by the ASM and the BAT. In total we identif...

  5. An implicit Smooth Particle Hydrodynamic code

    Energy Technology Data Exchange (ETDEWEB)

    Charles E. Knapp

    2000-04-01

    An implicit version of the Smooth Particle Hydrodynamic (SPH) code SPHINX has been written and is working. In conjunction with the SPHINX code the new implicit code models fluids and solids under a wide range of conditions. SPH codes are Lagrangian, meshless and use particles to model the fluids and solids. The implicit code makes use of the Krylov iterative techniques for solving large linear-systems and a Newton-Raphson method for non-linear corrections. It uses numerical derivatives to construct the Jacobian matrix. It uses sparse techniques to save on memory storage and to reduce the amount of computation. It is believed that this is the first implicit SPH code to use Newton-Krylov techniques, and is also the first implicit SPH code to model solids. A description of SPH and the techniques used in the implicit code are presented. Then, the results of a number of tests cases are discussed, which include a shock tube problem, a Rayleigh-Taylor problem, a breaking dam problem, and a single jet of gas problem. The results are shown to be in very good agreement with analytic solutions, experimental results, and the explicit SPHINX code. In the case of the single jet of gas case it has been demonstrated that the implicit code can do a problem in much shorter time than the explicit code. The problem was, however, very unphysical, but it does demonstrate the potential of the implicit code. It is a first step toward a useful implicit SPH code.

  6. Coding training for medical students: How good is diagnoses coding with ICD-10 by novices?

    OpenAIRE

    Stausberg, Jürgen; Lehmann, Nils

    2005-01-01

    Teaching of knowledge and competence in documentation and coding is an essential part of medical education. Therefore, coding training had been placed within the course of epidemiology, medical biometry, and medical informatics. From this, we can draw conclusions about the quality of coding by novices. One hundred and eighteen students coded diagnoses from 15 nephrological cases in homework. In addition to interrater reliability, validity was calculated by comparison with a reference coding. ...

  7. Effect of El cetroacupuncture Combined wi th ASM 981 on Atopic Dermatitis%吡美莫司联合电针治疗特异性皮炎疗效观察

    Institute of Scientific and Technical Information of China (English)

    孟祥慧; 周杰; 王晶; 张建波; 马志红

    2015-01-01

    Objective:To investigate the effect of pimecrolimus ( ASM 981) combined with electroacupuncture ( EA) on atopic dermatitis( AD) .Methods:32 patients were randomly divided into an EA group,an ASM 981 group and an EA+ASM 981 group.Pimecrolimus ointment 1% was used in ASM 981 group twice daily;EA treatment was applied to“Quchi”,“Xuehai”,“Zusanli”and“Sanyinjiao”in the EA group;the EA+ASM 981 group was combined EA with ASM 981, 4 weeks after treatment, the curative effect and complication were ob -served.Results:Compared with EA group and ASM 981 group, the clinically effective rate was significantly in -creased in the EA+ASM 981 group ( P<0 .01 ) , and the herpes zoster rate was decreased ( P<0 .01 ) .Con-clusion:The combined treatment promotes the clinically effective rate and security significantly and is better than either of the single treatment for AD.%目的:探讨吡美莫司(ASM 981)联合电针治疗特异性皮炎(AD)的有效性和安全性。方法:32例AD患者随机分为联合组、ASM 981组和电针组。 ASM 981组使用1%吡美莫司软膏外涂(2次/天);电针组使用电针针刺曲池、血海、足三里、三阴交;联合组联合ASM 981和电针治疗,治疗4周后观察各组临床疗效及并发症。结果:与ASM981组和电针组比较,联合组有效率显著增高( P<0.01),带状疱疹发病率显著降低( P<0.01)。结论:ASM981联合电针治疗特异性皮炎作用及安全性优于单独治疗组。

  8. On-line monitoring and inservice inspection in codes; Betriebsueberwachung und wiederkehrende Pruefungen in den Regelwerken

    Energy Technology Data Exchange (ETDEWEB)

    Bartonicek, J.; Zaiss, W. [Gemeinschaftskernkraftwerk Neckar GmbH, Neckarwestheim (Germany); Bath, H.R. [Bundesamt fuer Strahlenschutz, Salzgitter (Germany). Geschaeftsstelle des Kerntechnischen Ausschusses (KTA)

    1999-08-01

    The relevant regulatory codes determine the ISI tasks and the time intervals for recurrent components testing for evaluation of operation-induced damaging or ageing in order to ensure component integrity on the basis of the last available quality data. In-service quality monitoring is carried out through on-line monitoring and recurrent testing. The requirements defined by the engineering codes elaborated by various institutions are comparable, with the KTA nuclear engineering and safety codes being the most complete provisions for quality evaluation and assurance after different, defined service periods. German conventional codes for assuring component integrity provide exclusively for recurrent inspection regimes (mainly pressure tests and optical testing). The requirements defined in the KTA codes however always demanded more specific inspections relying on recurrent testing as well as on-line monitoring. Foreign codes for ensuring component integrity concentrate on NDE tasks at regular time intervals, with time intervals scope of testing activities being defined on the basis of the ASME code, section XI. (orig./CB) [Deutsch] Fuer die Komponentenintegritaet sind die Schaedigungsmechanismen mit dem nach den Regelwerken einzuhaltenden Abstand abzusichern. Dabei ist die jeweils vorhandene (Ist-) Qualitaet als Ausgangspunkt entscheidend. Die Absicherung der vorhandenen Qualitaet im weiteren Betrieb erfolgt durch geeignete Betriebsueberwachung und wiederkehrende Pruefungen. Die Anforderungen der Regelwerke sind vergleichbar, wobei die Bestimmung der vorhandenen Qualitaet nach einer bestimmten Betriebszeit sowie deren Absicherung im weiteren Betrieb am vollstaendigsten auf Basis des KTA-Regelwerkes moeglich ist. Die Absicherung der Komponentenintegritaet im Betrieb beruht in deutschen konventionellen Regelwerken nur auf den wiederkehrenden Pruefungen (hauptsaechlich Druckpruefungen und Sichtpruefungen). Das KTA-Regelwerk forderte hier schon immer qualifizierte

  9. Energy Efficient Authentication Strategies for Network Coding

    OpenAIRE

    Apavatjrut, Anya; Znaidi, Wassim; Fraboulet, Antoine; Goursaud, Claire; Jaffrès-Runser, Katia; Lauradoux, Cédric; Minier, Marine

    2012-01-01

    Recent advances in information theory and networking, e.g. aggregation, network coding or rateless codes, have significantly modified data dissemination in wireless networks. These new paradigms create new threats for security such as pollution attacks and denial of services (DoS). These attacks exploit the difficulty to authenticate data in such contexts. The particular case of xor network coding is considered herein. We investigate different strategies based on message authentication codes ...

  10. Fundamentals of convolutional coding

    CERN Document Server

    Johannesson, Rolf

    2015-01-01

    Fundamentals of Convolutional Coding, Second Edition, regarded as a bible of convolutional coding brings you a clear and comprehensive discussion of the basic principles of this field * Two new chapters on low-density parity-check (LDPC) convolutional codes and iterative coding * Viterbi, BCJR, BEAST, list, and sequential decoding of convolutional codes * Distance properties of convolutional codes * Includes a downloadable solutions manual

  11. Studies on DANESS Code Modeling

    International Nuclear Information System (INIS)

    The DANESS code modeling study has been performed. DANESS code is widely used in a dynamic fuel cycle analysis. Korea Atomic Energy Research Institute (KAERI) has used the DANESS code for the Korean national nuclear fuel cycle scenario analysis. In this report, the important models such as Energy-demand scenario model, New Reactor Capacity Decision Model, Reactor and Fuel Cycle Facility History Model, and Fuel Cycle Model are investigated. And, some models in the interface module are refined and inserted for Korean nuclear fuel cycle model. Some application studies have also been performed for GNEP cases and for US fast reactor scenarios with various conversion ratios

  12. Writing the Live Coding Book

    DEFF Research Database (Denmark)

    Cox, Geoff; Blackwell, Alan; Lee, Sang Wong

    2016-01-01

    This paper is a speculation on the relationship between coding and writing, and the ways in which technical innovations and capabilities enable us to rethink each in terms of the other. As a case study, we draw on recent experiences of preparing a book on live coding, which integrates a wide range...... of personal, historical, technical and critical perspectives. This book project has been both experimental and reflective, in a manner that allows us to draw on critical understanding of both code and writing, and point to the potential for new practices in the future....

  13. A case for a CUG-initiated coding sequence overlapping torovirus ORF1a and encoding a novel 30 kDa product

    Directory of Open Access Journals (Sweden)

    Atkins John F

    2009-09-01

    Full Text Available Abstract The genus Torovirus (order Nidovirales includes a number of species that infect livestock. These viruses have a linear positive-sense ssRNA genome of ~25-30 kb, encoding a large polyprotein that is expressed from the genomic RNA, and several additional proteins expressed from a nested set of 3'-coterminal subgenomic RNAs. In this brief report, we describe the bioinformatic discovery of a new, apparently coding, ORF that overlaps the 5' end of the polyprotein coding sequence, ORF1a, in the +2 reading frame. The new ORF has a strong coding signature and, in fact, is more conserved at the amino acid level than the overlapping region of ORF1a. We propose that the new ORF utilizes a non-AUG initiation codon - namely a conserved CUG codon in a strong Kozak context - upstream of the ORF1a AUG initiation codon, resulting in a novel 258 amino acid protein, dubbed '30K'.

  14. Dynamic experiments with high bisphenol-A concentrations modelled with an ASM model extended to include a separate XOC degrading microorganism

    DEFF Research Database (Denmark)

    Lindblom, Erik Ulfson; Press-Kristensen, Kåre; Vanrolleghem, P.A.;

    2009-01-01

    with the endocrine disrupting XOC bisphenol-A (BPA) in an activated sludge process with real wastewater were used to hypothesize an ASM-based process model including aerobic growth of a specific BPA-degrading microorganism and sorption of BPA to sludge. A parameter estimation method was developed, which...

  15. Comportamiento de variables clínico-epidemiológicas en pacientes asmáticos. Consultorio Médico de Familia 14, Puerto Padre

    Directory of Open Access Journals (Sweden)

    José Ramón Martínez Pérez

    2015-12-01

    Full Text Available Se realizó un estudio descriptivo de corte transversal en 40 pacientes asmáticos de todas las edades, pertenecientes al Consultorio 14 del área de salud de Puerto Padre, provincia de Las Tunas, durante los meses de enero a junio de 2008; con el objetivo de determinar el comportamiento de variables clínico-epidemiológicas en dichos pacientes. Para cumplimentar los objetivos se diseñó una encuesta que recogió las variables de interés. El análisis se hizo a través del sistema Statistix, permitiendo  obtener  la distribución de frecuencia y los porcientos. El test de Chi-Cuadrado se empleó en la comparación de variables cualitativas. Los resultados fueron descritos, interpretados y comparados con otros estudios. Se concluye que los pacientes grado I según Kraeppelin son los mas representados en nuestra población de pacientes asmáticos;  los broncodilatadores son los medicamentos mas utilizados por la población asmática estudiada; el incumplimiento del tratamiento medicamentoso no se relacionó con la severidad de la enfermedad en la población estudiada;  las malas condiciones de la vivienda y  el tabaquismo influyeron de forma negativa en la evolución del paciente asmático.

  16. RXTE/ASM and Swift / BAT observations of spectral transitions in bright X-ray binaries in 2005-2010

    Institute of Scientific and Technical Information of China (English)

    Jing Tang; Wen-Fei Yu; Zhen Yan

    2011-01-01

    We have studied X-ray spectral state transitions that can be seen in the longterm monitoring light curves of bright X-ray binaries from the All-Sky Monitor (ASM) onboard the Rossi X-ray Timing Explorer (RXTE) and the Burst Alert Telescope (BAT) onboard Swift during a period of five years from 2005 to 2010. We have applied a program to automatically identify the hard-to-soft (H-S) spectral state transitions in the bright X-ray binaries monitored by the ASM and the BAT. In total, we identified 128 hard-to-soft transitions, of which 59 occurred after 2008. We also determined the transition fluxes and the peak fluxes of the following soft states, updated the measurements of the luminosity corresponding to the H-S transition and the peak luminosity of the following soft state in about 30 bright persistent and transient black hole and neutron star binaries following Yu &Yan, and found the luminosity correlation and the luminosity range of spectral transitions in data between 2008-2010 are about the same as those derived from data before 2008. This further strengthens the idea that the luminosity at which the H-S spectral transition occurs in the Galactic X-ray binaries is determined by non-stationary accretion parameters such as the rate-of-change of the mass accretion rate rather than the mass accretion rate itself. The correlation is also found to hold in data of individual sources 4U 1608-52 and 4U 1636-53.

  17. Strong Trinucleotide Circular Codes

    Directory of Open Access Journals (Sweden)

    Christian J. Michel

    2011-01-01

    Full Text Available Recently, we identified a hierarchy relation between trinucleotide comma-free codes and trinucleotide circular codes (see our previous works. Here, we extend our hierarchy with two new classes of codes, called DLD and LDL codes, which are stronger than the comma-free codes. We also prove that no circular code with 20 trinucleotides is a DLD code and that a circular code with 20 trinucleotides is comma-free if and only if it is a LDL code. Finally, we point out the possible role of the symmetric group ∑4 in the mathematical study of trinucleotide circular codes.

  18. Procrastinated Codes

    CERN Document Server

    Fitzpatrick, P

    2002-01-01

    When storing or transmitting data, we often must make decisions earlier than we would like. Perhaps we can only afford to store a subset of our data, and are forced to choose what to discard by guessing at our future needs. Can quantum resources help us to delay those decisions until they can be made in an informed manner? This paper shows that interesting tradeoffs are possible even in the case of a single qubit. For example, we can store two classical bits in a single qubit if we will later wish to extract only one of them, and are willing to accept some possibility of error (15%).

  19. Nonbinary stabilizer codes over finite fields

    CERN Document Server

    Ketkar, A; Kumar, S; Sarvepalli, P K

    2005-01-01

    One formidable difficulty in quantum communication and computation is to protect information-carrying quantum states against undesired interactions with the environment. In past years, many good quantum error-correcting codes had been derived as binary stabilizer codes. Fault-tolerant quantum computation prompted the study of nonbinary quantum codes, but the theory of such codes is not as advanced as that of binary quantum codes. This paper describes the basic theory of stabilizer codes over finite fields. The relation between stabilizer codes and general quantum codes is clarified by introducing a Galois theory for these objects. A characterization of nonbinary stabilizer codes over GF(q) in terms of classical codes over GF(q^2) is provided that generalizes the well-known notion of additive codes over GF(4) of the binary case. This paper derives lower and upper bounds on the minimum distance of stabilizer codes, gives several code constructions, and derives numerous families of stabilizer codes, including qu...

  20. Joint source channel coding using arithmetic codes

    CERN Document Server

    Bi, Dongsheng

    2009-01-01

    Based on the encoding process, arithmetic codes can be viewed as tree codes and current proposals for decoding arithmetic codes with forbidden symbols belong to sequential decoding algorithms and their variants. In this monograph, we propose a new way of looking at arithmetic codes with forbidden symbols. If a limit is imposed on the maximum value of a key parameter in the encoder, this modified arithmetic encoder can also be modeled as a finite state machine and the code generated can be treated as a variable-length trellis code. The number of states used can be reduced and techniques used fo

  1. Model Children's Code.

    Science.gov (United States)

    New Mexico Univ., Albuquerque. American Indian Law Center.

    The Model Children's Code was developed to provide a legally correct model code that American Indian tribes can use to enact children's codes that fulfill their legal, cultural and economic needs. Code sections cover the court system, jurisdiction, juvenile offender procedures, minor-in-need-of-care, and termination. Almost every Code section is…

  2. Proceedings of the 4th NRC/ASME symposium on valve and pump testing

    International Nuclear Information System (INIS)

    The 1996 Symposium on Valve and Pump Testing, jointly sponsored by the Board on Nuclear Codes and Standards of the American Society of Mechanical Engineers and by the U.S. Nuclear Regulatory Commission, provides a forum for the discussion of current programs and methods for inservice testing and motor-operated valve testing at nuclear power plants. The symposium also provides an opportunity to discuss the need to improve that testing in order to help ensure the reliable performance of pumps and valves. The participation of industry representatives, regulators, and consultants results in the discussion of a broad spectrum of ideas and perspectives regarding the improvement of inservice testing of pumps and valves at nuclear power plants. Individual papers of this Proceedings have been cataloged separately

  3. Network coding with modular lattices

    CERN Document Server

    Kendziorra, Andreas

    2010-01-01

    In [1], K\\"otter and Kschischang presented a new model for error correcting codes in network coding. The alphabet in this model is the subspace lattice of a given vector space, a code is a subset of this lattice and the used metric on this alphabet is the map d: (U, V) \\longmapsto dim(U + V) - dim(U \\bigcap V). In this paper we generalize this model to arbitrary modular lattices, i.e. we consider codes, which are subsets of modular lattices. The used metric in this general case is the map d: (x, y) \\longmapsto h(x \\bigvee y) - h(x \\bigwedge y), where h is the height function of the lattice. We apply this model to submodule lattices. Moreover, we show a method to compute the size of spheres in certain modular lattices and present a sphere packing bound, a sphere covering bound, and a singleton bound for codes, which are subsets of modular lattices. [1] R. K\\"otter, F.R. Kschischang: Coding for errors and erasures in random network coding, IEEE Trans. Inf. Theory, Vol. 54, No. 8, 2008

  4. On Construction of Optimal A2-Codes

    Institute of Scientific and Technical Information of China (English)

    HU Lei

    2001-01-01

    Two authentication codes with arbitration (A2-codes) are constrructed from finite affine spaces to illustrate for the first time that the information-theoretic lower bounds for A2-codes can be strictly tighter than the combinatorial ones. The codes also illustrate that the conditional combinatorial lower bounds on numbers of encoding\\ decoding rules are not genuine ones. As an analogue of 3-dimensional case, an A2-code from 4-dimensional finite projective spaces is constructed, which neets both the information-theoretic and combinatorial lower bounds.

  5. The Serializability of Network Codes

    CERN Document Server

    Blasiak, Anna

    2010-01-01

    Network coding theory studies the transmission of information in networks whose vertices may perform nontrivial encoding and decoding operations on data as it passes through the network. The main approach to deciding the feasibility of network coding problems aims to reduce the problem to optimization over a polytope of entropic vectors subject to constraints imposed by the network structure. In the case of directed acyclic graphs, these constraints are completely understood, but for general graphs the problem of enumerating them remains open: it is not known how to classify the constraints implied by a property that we call serializability, which refers to the absence of paradoxical circular dependencies in a network code. In this work we initiate the first systematic study of the constraints imposed on a network code by serializability. We find that serializability cannot be detected solely by evaluating the Shannon entropy of edge sets in the graph, but nevertheless, we give a polynomial-time algorithm tha...

  6. Affine Grassmann codes

    DEFF Research Database (Denmark)

    Høholdt, Tom; Beelen, Peter; Ghorpade, Sudhir Ramakant

    2010-01-01

    We consider a new class of linear codes, called affine Grassmann codes. These can be viewed as a variant of generalized Reed-Muller codes and are closely related to Grassmann codes.We determine the length, dimension, and the minimum distance of any affine Grassmann code. Moreover, we show that...... affine Grassmann codes have a large automorphism group and determine the number of minimum weight codewords....

  7. Evaluation of an ASM1 Model Calibration Precedure on a Municipal-Industrial Wastewater Treatment Plant

    DEFF Research Database (Denmark)

    Petersen, Britta; Gernaey, Krist; Henze, Mogens;

    2002-01-01

    treatment plant. In the case that was studied it was important to have a detailed description of the process dynamics, since the model was to be used as the basis for optimisation scenarios in a later phase. Therefore, a complete model calibration procedure was applied including: (1) a description...

  8. Coding for dummies

    CERN Document Server

    Abraham, Nikhil

    2015-01-01

    Hands-on exercises help you learn to code like a pro No coding experience is required for Coding For Dummies,your one-stop guide to building a foundation of knowledge inwriting computer code for web, application, and softwaredevelopment. It doesn't matter if you've dabbled in coding or neverwritten a line of code, this book guides you through the basics.Using foundational web development languages like HTML, CSS, andJavaScript, it explains in plain English how coding works and whyit's needed. Online exercises developed by Codecademy, a leading online codetraining site, help hone coding skill

  9. Advanced video coding systems

    CERN Document Server

    Gao, Wen

    2015-01-01

    This comprehensive and accessible text/reference presents an overview of the state of the art in video coding technology. Specifically, the book introduces the tools of the AVS2 standard, describing how AVS2 can help to achieve a significant improvement in coding efficiency for future video networks and applications by incorporating smarter coding tools such as scene video coding. Topics and features: introduces the basic concepts in video coding, and presents a short history of video coding technology and standards; reviews the coding framework, main coding tools, and syntax structure of AV

  10. Polyphase alternating codes

    Directory of Open Access Journals (Sweden)

    M. Markkanen

    2008-08-01

    Full Text Available We present a new class of alternating codes. Instead of the customary binary phase codes, the new codes utilize either p or p–1 phases, where p is a prime number. The first class of codes has code length pm, where m is a positive integer, the second class has code length p–1. We give an actual construction algorithm, and explain the principles behind it. We handle a few specific examples in detail. The new codes offer an enlarged collection of code lengths for radar experiments.

  11. Forty-fourth ASME International Gas Turbine and Aeroengine Technical Congress, Exposition and Users Symposium. Pt. 2. Aircraft gas turbine; 1999 nen dai 44 kai ASME kokusai gas turbine kaigi. kokuyo gas turbine

    Energy Technology Data Exchange (ETDEWEB)

    Ikeyama, M. [Ishikawajima-Harima Heavy Industries Co. Ltd., Tokyo (Japan)

    1999-09-20

    This paper reports aircraft gas turbine presented at the 44th ASME International Gas Turbine and Aeroengine Technical Congress 1999. What has drawn the strongest interest was the session related to the numerical propulsion system simulation (NPSS) being developed by NASA. The simulation links into a network about 1000 computers possessed by aero-industry related companies, research institutes and universities. The network uses common models to perform analysis under parallel processing on aerodynamics, heat transfer and structures, while taking interactions into consideration. It is planned that the whole jet engines will be subjected to non-steady calculation using three-dimensional models by the year 2007. The cost will be 8% or less of that when large super computers are used. The keys to realization of a supersonic passenger aircraft are noise, exhaust gas and impulse wave, whereas there would be no market unless a method for absorbing the impulse wave is developed and the aircraft can fly over the ground. Presentations were made on a wind tunnel testing equipment for jet engines and studies on turbo-fan engines for civilian aircraft. (NEDO)

  12. Assays for in vitro monitoring of proliferation of human airway smooth muscle (ASM) and human pulmonary arterial vascular smooth muscle (VSM) cells.

    Science.gov (United States)

    Goncharova, Elena A; Lim, Poay; Goncharov, Dmitry A; Eszterhas, Andrew; Panettieri, Reynold A; Krymskaya, Vera P

    2006-01-01

    Vascular and airway remodeling, which are characterized by airway smooth muscle (ASM) and pulmonary arterial vascular smooth muscle (VSM) proliferation, contribute to the pathology of asthma, pulmonary hypertension, restenosis and atherosclerosis. To evaluate the proliferation of VSM and ASM cells in response to mitogens, we perform a [3H]thymidine incorporation assay. The proliferation protocol takes approximately 48 h and includes stimulating cells synchronized in G0/G1 phase of the cell cycle with agonists, labeling cells with [3H]thymidine and examining levels of [3H]thymidine incorporation by scintillation counting. Although using radiolabeled [3H]thymidine incorporation is a limitation, the greatest benefit of the assay is providing reliable and statistically significant data. PMID:17406550

  13. Quantum Goppa Codes over Hyperelliptic Curves

    CERN Document Server

    Niehage, A

    2005-01-01

    This Diplom thesis provides an explicit construction of a quantum Goppa code for any hyperelliptic curve over a non-binary field. Hyperelliptic curves have conjugate pairs of rational places. We use these pairs to construct self-orthogonal classical Goppa codes with respect to a weighted inner product. These codes are also self-orthogonal with respect to a symplectic inner product and therefore define quantum stabilizer codes. A final transformation leads to a quantum Goppa code with respect to the standard symplectic inner product. Some examples illustrate the described construction. Furthermore we present a projection of a higher dimensional code onto the base field and a special case when the projected code is again weighted self-orthogonal and symmetric.

  14. 9 July 2012 - Academy of Sciences Malaysia (ASM), Chairman, Mathematical and Physical Sciences Discipline Group M. Yahaya FASc and his delegation visiting the LHC superconducting magnet test hall with Technology Department G. De Rijk.

    CERN Document Server

    Maximilien Brice

    2012-01-01

    9 July 2012 - Academy of Sciences Malaysia (ASM), Chairman, Mathematical and Physical Sciences Discipline Group M. Yahaya FASc and his delegation visiting the LHC superconducting magnet test hall with Technology Department G. De Rijk.

  15. Locally Orderless Registration Code

    DEFF Research Database (Denmark)

    2012-01-01

    This is code for the TPAMI paper "Locally Orderless Registration". The code requires intel threadding building blocks installed and is provided for 64 bit on mac, linux and windows.......This is code for the TPAMI paper "Locally Orderless Registration". The code requires intel threadding building blocks installed and is provided for 64 bit on mac, linux and windows....

  16. Effect of Induction Heat Bending Process on the Properties of ASME SA106 Gr. C Carbon Steel Pipes

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Ki Tae; Kim, Young Sik [Andong National University, Andong (Korea, Republic of); Chang, Hyun Young; Oh, Young Jin [KEPCO Engineering and Construction Company, Seongnam (Korea, Republic of); Sung, Gi Ho [R and D Center, Busan (Korea, Republic of)

    2015-04-15

    Recently, the bending process is greatly applied to fabricate the pipe line. Bending process can reduce welding joints and then decrease the number of inspection. Thus, the maintenance cost will be reduced. Induction heat bending process is composed of bending deformation by repeated local heat and cooling. By this thermal process, corrosion properties and microstructure can be affected. This work focused on the effect of induction heating bending process on the properties of ASME SA106 Gr. C low carbon steel pipes. Microstructure analysis, hardness measurements, and immersion corrosion test were performed for base metal and bended area including extrados, intrados, crown up, and down parts. Microstructure was analyzed using an optical microscope and SEM. Hardness was measured using a Rockwell B scale. Induction heat bending process has influenced upon the size and distribution of ferrite and pearlite phases which were transformed into finer structure than those of base metal. Even though the fine microstructure, every bent area showed a little lower hardness than that of base metal. It is considered that softening by the bending process may be arisen. Except of I2, intrados area, the others showed a similar corrosion rate to that of base metal. But even relatively high rate of intrados area was very low and acceptable. Therefore, it is judged that induction heat bending process didn't affect boric acid corrosion behaviour of carbon steel.

  17. Granulomatose broncocêntrica idiopática em jovem não asmática

    Directory of Open Access Journals (Sweden)

    Santos José Wellington Alves dos

    2003-01-01

    Full Text Available Granulomatose broncocêntrica é um achado histopatológico descritivo, caracterizado pela inflamação granulomatosa necrosante, centrada em brônquios e bronquíolos, e que ocorre associada a doenças infecciosas, imunológicas e neoplásicas, ou de forma idiopática. Este trabalho relata o caso de uma jovem não asmática de 26 anos com dor torácica, febre e tosse produtiva havia um mês, que apresentou consolidação e cavitação em segmento lingular, observadas na radiografia e na tomografia computadorizada de tórax. Punção aspirativa transbrônquica evidenciou lesão inflamatória inespecífica, sem etiologia identificada. O exame histológico de material obtido por biópsia pulmonar a céu aberto foi compatível com granulomatose broncocêntrica idiopática. Após tratamento com prednisona, houve melhora clínica, sem recidivas.

  18. Source Coding with Fixed Lag Side Information

    OpenAIRE

    Martinian, Emin; Wornell, Gregory W.

    2004-01-01

    We consider source coding with fixed lag side information at the decoder. We focus on the special case of perfect side information with unit lag corresponding to source coding with feedforward (the dual of channel coding with feedback) introduced by Pradhan. We use this duality to develop a linear complexity algorithm which achieves the rate-distortion bound for any memoryless finite alphabet source and distortion measure.

  19. Evaluating the structural identifiability of the parameters of the EBPR sub-model in ASM2d by the differential algebra method.

    Science.gov (United States)

    Zhang, Tian; Zhang, Daijun; Li, Zhenliang; Cai, Qing

    2010-05-01

    The calibration of ASMs is a prerequisite for their application to simulation of a wastewater treatment plant. This work should be made based on the evaluation of structural identifiability of model parameters. An EBPR sub-model including denitrification phosphorus removal has been incorporated in ASM2d. Yet no report is presented on the structural identifiability of the parameters in the EBPR sub-model. In this paper, the differential algebra approach was used to address this issue. The results showed that the structural identifiability of parameters in the EBPR sub-model could be improved by increasing the measured variables. The reduction factor eta(NO)(3) was identifiable when combined data of aerobic process and anoxic process were assumed. For K(PP), X(PAO) and q(PHA) of the anaerobic process to be uniquely identifiable, one of them is needed to be determined by other ways. Likewise, if prior information on one of the parameters, K(PHA), X(PAO) and q(PP) of the aerobic process, is known, all the parameters are identifiable. The above results could be of interest to the parameter estimation of the EBPR sub-model. The algorithm proposed in the paper is also suitable for other sub-models of ASMs.

  20. Detection of Multiple Budding Yeast Cells and a Partial Sequence of 43-kDa Glycoprotein Coding Gene of Paracoccidioides brasiliensis from a Case of Lacaziosis in a Female Pacific White-Sided Dolphin (Lagenorhynchus obliquidens).

    Science.gov (United States)

    Minakawa, Tomoko; Ueda, Keiichi; Tanaka, Miyuu; Tanaka, Natsuki; Kuwamura, Mitsuru; Izawa, Takeshi; Konno, Toshihiro; Yamate, Jyoji; Itano, Eiko Nakagawa; Sano, Ayako; Wada, Shinpei

    2016-08-01

    Lacaziosis, formerly called as lobomycosis, is a zoonotic mycosis, caused by Lacazia loboi, found in humans and dolphins, and is endemic in the countries on the Atlantic Ocean, Indian Ocean and Pacific Ocean of Japanese coast. Susceptible Cetacean species include the bottlenose dolphin (Tursiops truncatus), the Indian Ocean bottlenose dolphin (T. aduncus), and the estuarine dolphin (Sotalia guianensis); however, no cases have been recorded in other Cetacean species. We diagnosed a case of Lacaziosis in a Pacific white-sided dolphin (Lagenorhynchus obliquidens) nursing in an aquarium in Japan. The dolphin was a female estimated to be more than 14 years old at the end of June 2015 and was captured in a coast of Japan Sea in 2001. Multiple, lobose, and solid granulomatous lesions with or without ulcers appeared on her jaw, back, flipper and fluke skin, in July 2014. The granulomatous skin lesions from the present case were similar to those of our previous cases. Multiple budding and chains of round yeast cells were detected in the biopsied samples. The partial sequence of 43-kDa glycoprotein coding gene confirmed by a nested PCR and sequencing, which revealed a different genotype from both Amazonian and Japanese lacaziosis in bottlenose dolphins, and was 99 % identical to those derived from Paracoccidioides brasiliensis; a sister fungal species to L. loboi. This is the first case of lacaziosis in Pacific white-sided dolphin.

  1. Detection of Multiple Budding Yeast Cells and a Partial Sequence of 43-kDa Glycoprotein Coding Gene of Paracoccidioides brasiliensis from a Case of Lacaziosis in a Female Pacific White-Sided Dolphin (Lagenorhynchus obliquidens).

    Science.gov (United States)

    Minakawa, Tomoko; Ueda, Keiichi; Tanaka, Miyuu; Tanaka, Natsuki; Kuwamura, Mitsuru; Izawa, Takeshi; Konno, Toshihiro; Yamate, Jyoji; Itano, Eiko Nakagawa; Sano, Ayako; Wada, Shinpei

    2016-08-01

    Lacaziosis, formerly called as lobomycosis, is a zoonotic mycosis, caused by Lacazia loboi, found in humans and dolphins, and is endemic in the countries on the Atlantic Ocean, Indian Ocean and Pacific Ocean of Japanese coast. Susceptible Cetacean species include the bottlenose dolphin (Tursiops truncatus), the Indian Ocean bottlenose dolphin (T. aduncus), and the estuarine dolphin (Sotalia guianensis); however, no cases have been recorded in other Cetacean species. We diagnosed a case of Lacaziosis in a Pacific white-sided dolphin (Lagenorhynchus obliquidens) nursing in an aquarium in Japan. The dolphin was a female estimated to be more than 14 years old at the end of June 2015 and was captured in a coast of Japan Sea in 2001. Multiple, lobose, and solid granulomatous lesions with or without ulcers appeared on her jaw, back, flipper and fluke skin, in July 2014. The granulomatous skin lesions from the present case were similar to those of our previous cases. Multiple budding and chains of round yeast cells were detected in the biopsied samples. The partial sequence of 43-kDa glycoprotein coding gene confirmed by a nested PCR and sequencing, which revealed a different genotype from both Amazonian and Japanese lacaziosis in bottlenose dolphins, and was 99 % identical to those derived from Paracoccidioides brasiliensis; a sister fungal species to L. loboi. This is the first case of lacaziosis in Pacific white-sided dolphin. PMID:26883513

  2. Using the activated sludge model 2d (ASM2d) to understand and predict the phosphorus accumulating organisms mechanism in enhanced biological phosphorus removal in relation to disintegrated sludge as a carbon source

    OpenAIRE

    Boontian, Nittaya

    2012-01-01

    Carbon sources are considered as one of the most important factors in the performance of enhanced biological phosphorus removal (EBPR). Disintegrated sludge (DS) can act as carbon source to increase the efficiency of EBPR. This research explores the influence of DS upon phosphorus removal efficiency using mathematical simulation modeling. Activated Sludge Model No. 2d (ASM2d) is one of the most useful of activated sludge (AS) models. This is because ASM2d can express the integrated mechanisms...

  3. QR Codes 101

    Science.gov (United States)

    Crompton, Helen; LaFrance, Jason; van 't Hooft, Mark

    2012-01-01

    A QR (quick-response) code is a two-dimensional scannable code, similar in function to a traditional bar code that one might find on a product at the supermarket. The main difference between the two is that, while a traditional bar code can hold a maximum of only 20 digits, a QR code can hold up to 7,089 characters, so it can contain much more…

  4. Polyphase alternating codes

    CERN Document Server

    Markkanen, Markku

    2007-01-01

    This work introduces a method for constructing polyphase alternating codes in which the length of a code transmission cycle can be $p^m$ or $p-1$, where $p$ is a prime number and $m$ is a positive integer. The relevant properties leading to the construction alternating codes and the algorithm for generating alternating codes is described. Examples of all practical and some not that practical polyphase code lengths are given.

  5. Constructing quantum codes

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Quantum error correcting codes are indispensable for quantum information processing and quantum computation.In 1995 and 1996,Shor and Steane gave first several examples of quantum codes from classical error correcting codes.The construction of efficient quantum codes is now an active multi-discipline research field.In this paper we review the known several constructions of quantum codes and present some examples.

  6. Supervised Transfer Sparse Coding

    KAUST Repository

    Al-Shedivat, Maruan

    2014-07-27

    A combination of the sparse coding and transfer learn- ing techniques was shown to be accurate and robust in classification tasks where training and testing objects have a shared feature space but are sampled from differ- ent underlying distributions, i.e., belong to different do- mains. The key assumption in such case is that in spite of the domain disparity, samples from different domains share some common hidden factors. Previous methods often assumed that all the objects in the target domain are unlabeled, and thus the training set solely comprised objects from the source domain. However, in real world applications, the target domain often has some labeled objects, or one can always manually label a small num- ber of them. In this paper, we explore such possibil- ity and show how a small number of labeled data in the target domain can significantly leverage classifica- tion accuracy of the state-of-the-art transfer sparse cod- ing methods. We further propose a unified framework named supervised transfer sparse coding (STSC) which simultaneously optimizes sparse representation, domain transfer and classification. Experimental results on three applications demonstrate that a little manual labeling and then learning the model in a supervised fashion can significantly improve classification accuracy.

  7. Combinatorial Batch Codes with Redundancy

    OpenAIRE

    Jung, Jiyoon; Mummert, Carl; Niese, Elizabeth; Schroeder, Michael w.

    2015-01-01

    A combinatorial batch code with redundancy $r$ and parameters $(n,k,m,t)$ can be represented as a system $C$ of $m$ (not necessarily distinct) subsets of an underlying $n$-element set $F$, so that each $k$-subset of $F$ can be covered by every $(m-r)$-subset $K$ of $C$ while taking no more than $t$ elements of $F$ with each set in $K$. The sum of the cardinalities of the sets in $C$ is the weight of the code. We focus on the case $t =1$, and determine the minimal weight for several ranges of ...

  8. STANDARDIZING SOURCE CODE SECURITY AUDITS

    Directory of Open Access Journals (Sweden)

    Suzanna Schmeelk

    2012-02-01

    Full Text Available A source code security audit is a powerful methodology for locating and removing security vulnerabilities.An audit can be used to (1 pass potentially prioritized list of vulnerabilities to developers (2 exploitvulnerabilities or (3 provide proof-of-concepts for potential vulnerabilities. The security audit researchcurrently remains disjoint with minor discussion of methodologies utilized in the field. This paperassembles a broad array of literature to promote standardizing source code security audits techniques. It,then, explores a case study using the aforementioned techniques.The case study analyzes the security for a stable version of the Apache Traffic Server (ATS. The studytakes a white to gray hat point of view as it reports vulnerabilities located by two popular proprietary tools,examines and connects potential vulnerabilities with a standard community-driven taxonomy, anddescribes consequences for exploiting the vulnerabilities. A review of other security-driven case studiesconcludes this research.

  9. Linear codes associated to determinantal varieties

    DEFF Research Database (Denmark)

    Beelen, Peter; Ghorpade, Sudhir R.; Hasan, Sartaj Ul

    2015-01-01

    We consider a class of linear codes associated to projective algebraic varieties defined by the vanishing of minors of a fixed size of a generic matrix. It is seen that the resulting code has only a small number of distinct weights. The case of varieties defined by the vanishing of 2×2 minors is ...

  10. Turbo Codes Extended with Outer BCH Code

    DEFF Research Database (Denmark)

    Andersen, Jakob Dahl

    1996-01-01

    The "error floor" observed in several simulations with the turbo codes is verified by calculation of an upper bound to the bit error rate for the ensemble of all interleavers. Also an easy way to calculate the weight enumerator used in this bound is presented. An extended coding scheme is proposed...

  11. Homogenous Chaotic Network Serving as a Rate/Population Code to Temporal Code Converter

    Directory of Open Access Journals (Sweden)

    Mikhail V. Kiselev

    2014-01-01

    Full Text Available At present, it is obvious that different sections of nervous system utilize different methods for information coding. Primary afferent signals in most cases are represented in form of spike trains using a combination of rate coding and population coding while there are clear evidences that temporal coding is used in various regions of cortex. In the present paper, it is shown that conversion between these two coding schemes can be performed under certain conditions by a homogenous chaotic neural network. Interestingly, this effect can be achieved without network training and synaptic plasticity.

  12. Is the Decision to Code-share a Route Different for Virtual versus Traditional Code-Share Arrangements?

    OpenAIRE

    DU, YAN; McMullen, Starr

    2012-01-01

    This paper analyzes factors that determine whether individual routes remain in or leave a code-share agreement in different scenarios: pooled, purely traditionally code-shared routes, purely virtual code-shared routes and routes both traditionally and purely codeshare. The code-share alliance between Continental and America West Airlines is used as the case study for this analysis. Empirical results show that factors affecting alliance firms’ code sharing decision significantly differ for vir...

  13. Polyphase alternating codes

    OpenAIRE

    M. Markkanen; Vierinen, J.; Markkanen, J.

    2007-01-01

    We present a new class of alternating codes. Instead of the customary binary phase codes, the new codes utilize either p or p–1 phases, where p is a prime number. The first class of codes has code length pm, where m is a positive integer, the second class has code length p–1. We give an actual construction algorithm, and explain the principles behind it. We ...

  14. Blurring in bar code signals

    Science.gov (United States)

    Tang, Hong

    1997-10-01

    When a bar code symbol is passed over a scanner, it is struck across by a fast moving laser beam. The laser light is scattered by the bar code. The total scattered power is modulated by the reflectivity of the bars and spaces in the symbol. A fraction of the scattered light is collected and focused onto a photodetector that converts the light variation into an electronic signal. The electronic signal is then digitized for analysis by a computer. The scanning and detection process can be modeled by a convolution of the laser beam profile and the bar code reflectivity function. The switching between states in the digitized bar code signal, which represents transitions from a space to a bar or vice versa, is determined by a zero-crossing point in the second derivative of the analog signal. The laser profile acts like a smoothing function. It blurs the analog electronic signal. If the width of the laser profile is less than the minimum width of bars and spaces in the bar code reflectivity function, the transition point is not affected by the location of its neighboring edges. If the laser profile is wider than the minimum width in the bar code, the transition point can be shifted due to the locations of its neighboring edges. The behavior of the shift of transition is analyzed here for all cases in a UPC symbol. It is found that the amount of shift in the transition point is almost the same for several different cases within the depth of field of the scanner. The knowledge of the behavior of transition point shift can be used to accurately compensate printing errors in an over-printed bar code. The modulation transfer function (MTF) of bar code scanning is the Fourier transform of the marginal function of the scanning laser beam. The MTF through focus for a scanning system is presented. By using an aperture with central obscuration in the laser focusing system, the high frequency resolution of bar code scanning can be enhanced and the depth of field of the scanner can

  15. [A comparative study of coding and information systems for the evaluation of medical and social conditions: the case of addictive disorders].

    Science.gov (United States)

    Bourdais-Mannone, Claire; Cherikh, Faredj; Gicquel, Nathalie; Gelsi, Eve; Jove, Frédérique; Staccini, Pascal

    2011-01-01

    The purpose of this study was to conduct a descriptive and comparative analysis of the tools used by healthcare professionals specializing in addictive disorders to promote a rapprochement of information systems. The evaluation guide used to assess the compensation needs of disabled persons treated in "Maisons Départementales des Personnes Handicapées" (centres for disabled people) organizes information in different areas, including a psychological component. The guide includes social and environmental information in the "Recueil Commun sur les Addictions et les Prises en charges" (Joint Report on Drug Addiction and Drug Treatment). While the program for the medicalization of information systems includes care data, the current information about social situations remains inadequate. The international classification of diseases provides synthetic diagnostic codes to describe substance use, etiologic factors and the somatic and psychological complications inherent to addictive disorders. The current system could be radically simplified and harmonized and would benefit from adopting a more individualized approach to non-substance behavioral addictions. The international classification of disabilities provides tools for evaluating the psychological component included in the recent definition of addictive disorders. Legal information should play an integral role in the structure of the information system and in international classifications. The prevalence of episodes of care and treatment of addictive and psychological disorders was assessed at Nice University Hospital in all disciplines. Except in addiction treatment units, very few patients were found to have a RECAP file.

  16. Network coding for computing: Linear codes

    CERN Document Server

    Appuswamy, Rathinakumar; Karamchandani, Nikhil; Zeger, Kenneth

    2011-01-01

    In network coding it is known that linear codes are sufficient to achieve the coding capacity in multicast networks and that they are not sufficient in general to achieve the coding capacity in non-multicast networks. In network computing, Rai, Dey, and Shenvi have recently shown that linear codes are not sufficient in general for solvability of multi-receiver networks with scalar linear target functions. We study single receiver networks where the receiver node demands a target function of the source messages. We show that linear codes may provide a computing capacity advantage over routing only when the receiver demands a `linearly-reducible' target function. % Many known target functions including the arithmetic sum, minimum, and maximum are not linearly-reducible. Thus, the use of non-linear codes is essential in order to obtain a computing capacity advantage over routing if the receiver demands a target function that is not linearly-reducible. We also show that if a target function is linearly-reducible,...

  17. Susceptibility of asthmatic children to respiratory infection Susceptibilidade de crianças asmáticas a infecções respiratórias

    Directory of Open Access Journals (Sweden)

    Júlio C. R. Pereira

    1997-10-01

    Full Text Available OBJECTIVE: A case-control study of patients with pneumonia was conducted to investigate whether wheezing diseases could be a risk factor. METHODS: A random sample was taken from a general university hospital in S. Paulo City between March and August 1994 comprising 51 cases of pneumonia paired by age and sex to 51 non-respiratory controls and 51 healthy controls. Data collection was carried out by two senior paediatricians. Diagnoses of pneumonia and presence of wheezing disease were independently established by each paediatrician for both cases and controls. Pneumonia was radiologically confirmed and repeatability of information on wheezing diseases was measured. Logistic regression analysis was used to identify risk factors. RESULTS: Wheezing diseases, interpreted as proxies of asthma, were found to be an important risk factor for pneumonia with an odds ratio of 7.07 (95%CI= 2.34-21.36, when the effects of bedroom crowding (odds ratio = 1.49 per person, 95%CI= 0.95-2.32 and of low family income (odds ratio = 5.59 against high family income, 95%CI= 1.38-22.63 were controlled. The risk of pneumonia attributable to wheezing diseases is tentatively calculated at 51.42%. CONCLUSION: It is concluded that at practice level asthmatics should deserve proper surveillance for infection and that at public health level pneumonia incidence could be reduced if current World Health Organisation's guidelines were reviewed as to include comprehensive care for this illness.OBJETIVO: Investigar, através de um estudo caso-controle de pacientes com pneumonia, se as doenças chiadoras poderiam constituir-se em fator de risco. MÉTODOS: De um hospital universitário, na cidade de São Paulo, Brasil, entre março e agosto de 1994, foi tomada uma amostra de 51 casos de pneumonia pareados por sexo e idade a 51 controles sadios e 51 controles não respiratórios. O diagnóstico de pneumonia e a presença de doença chiadora foram investigados de forma independente por

  18. TIPONLINE Code Table

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Coded items are entered in the tiponline data entry program. The codes and their explanations are necessary in order to use the data

  19. SEVERO code - user's manual

    International Nuclear Information System (INIS)

    This user's manual contains all the necessary information concerning the use of SEVERO code. This computer code is related to the statistics of extremes = extreme winds, extreme precipitation and flooding hazard risk analysis. (A.C.A.S.)

  20. Manual and Fast C Code Optimization

    Directory of Open Access Journals (Sweden)

    Mohammed Fadle Abdulla

    2010-01-01

    Full Text Available Developing an application with high performance through the code optimization places a greater responsibility on the programmers. While most of the existing compilers attempt to automatically optimize the program code, manual techniques remain the predominant method for performing optimization. Deciding where to try to optimize code is difficult, especially for large complex applications. For manual optimization, the programmers can use his experiences in writing the code, and then he can use a software profiler in order to collect and analyze the performance data from the code. In this work, we have gathered the most experiences which can be applied to improve the style of writing programs in C language as well as we present an implementation of the manual optimization of the codes using the Intel VTune profiler. The paper includes two case studies to illustrate our optimization on the Heap Sort and Factorial functions.

  1. Unfolding the color code

    OpenAIRE

    Kubica, Aleksander; Yoshida, Beni; Pastawski, Fernando

    2015-01-01

    The topological color code and the toric code are two leading candidates for realizing fault-tolerant quantum computation. Here we show that the color code on a $d$-dimensional closed manifold is equivalent to multiple decoupled copies of the $d$-dimensional toric code up to local unitary transformations and adding or removing ancilla qubits. Our result not only generalizes the proven equivalence for $d=2$, but also provides an explicit recipe of how to decouple independent components of the ...

  2. The materiality of Code

    DEFF Research Database (Denmark)

    Soon, Winnie

    2014-01-01

    to understand the socio-technical side of a changing network environment. Through the study of code, including but not limited to source code, technical specifications and other materials in relation to the artwork production, I would like to explore the materiality of code that goes beyond technical...

  3. Refactoring test code

    NARCIS (Netherlands)

    Deursen, A. van; Moonen, L.M.F.; Bergh, A. van den; Kok, G.

    2001-01-01

    Two key aspects of extreme programming (XP) are unit testing and merciless refactoring. Given the fact that the ideal test code / production code ratio approaches 1:1, it is not surprising that unit tests are being refactored. We found that refactoring test code is different from refactoring product

  4. Gauge color codes

    DEFF Research Database (Denmark)

    Bombin Palomo, Hector

    2015-01-01

    Color codes are topological stabilizer codes with unusual transversality properties. Here I show that their group of transversal gates is optimal and only depends on the spatial dimension, not the local geometry. I also introduce a generalized, subsystem version of color codes. In 3D they allow the...

  5. ARC Code TI: CODE Software Framework

    Data.gov (United States)

    National Aeronautics and Space Administration — CODE is a software framework for control and observation in distributed environments. The basic functionality of the framework allows a user to observe a...

  6. ARC Code TI: ROC Curve Code Augmentation

    Data.gov (United States)

    National Aeronautics and Space Administration — ROC (Receiver Operating Characteristic) curve Code Augmentation was written by Rodney Martin and John Stutz at NASA Ames Research Center and is a modification of...

  7. Code qualification of structural materials for AFCI advanced recycling reactors.

    Energy Technology Data Exchange (ETDEWEB)

    Natesan, K.; Li, M.; Majumdar, S.; Nanstad, R.K.; Sham, T.-L. (Nuclear Engineering Division); (ORNL)

    2012-05-31

    This report summarizes the further findings from the assessments of current status and future needs in code qualification and licensing of reference structural materials and new advanced alloys for advanced recycling reactors (ARRs) in support of Advanced Fuel Cycle Initiative (AFCI). The work is a combined effort between Argonne National Laboratory (ANL) and Oak Ridge National Laboratory (ORNL) with ANL as the technical lead, as part of Advanced Structural Materials Program for AFCI Reactor Campaign. The report is the second deliverable in FY08 (M505011401) under the work package 'Advanced Materials Code Qualification'. The overall objective of the Advanced Materials Code Qualification project is to evaluate key requirements for the ASME Code qualification and the Nuclear Regulatory Commission (NRC) approval of structural materials in support of the design and licensing of the ARR. Advanced materials are a critical element in the development of sodium reactor technologies. Enhanced materials performance not only improves safety margins and provides design flexibility, but also is essential for the economics of future advanced sodium reactors. Code qualification and licensing of advanced materials are prominent needs for developing and implementing advanced sodium reactor technologies. Nuclear structural component design in the U.S. must comply with the ASME Boiler and Pressure Vessel Code Section III (Rules for Construction of Nuclear Facility Components) and the NRC grants the operational license. As the ARR will operate at higher temperatures than the current light water reactors (LWRs), the design of elevated-temperature components must comply with ASME Subsection NH (Class 1 Components in Elevated Temperature Service). However, the NRC has not approved the use of Subsection NH for reactor components, and this puts additional burdens on materials qualification of the ARR. In the past licensing review for the Clinch River Breeder Reactor Project (CRBRP

  8. The Procions` code; Le code Procions

    Energy Technology Data Exchange (ETDEWEB)

    Deck, D.; Samba, G.

    1994-12-19

    This paper presents a new code to simulate plasmas generated by inertial confinement. This multi-kinds kinetic code is done with no angular approximation concerning ions and will work in plan and spherical geometry. First, the physical model is presented, using Fokker-Plank. Then, the numerical model is introduced in order to solve the Fokker-Plank operator under the Rosenbluth form. At the end, several numerical tests are proposed. (TEC). 17 refs., 27 figs.

  9. Universal Rateless Codes From Coupled LT Codes

    CERN Document Server

    Aref, Vahid

    2011-01-01

    It was recently shown that spatial coupling of individual low-density parity-check codes improves the belief-propagation threshold of the coupled ensemble essentially to the maximum a posteriori threshold of the underlying ensemble. We study the performance of spatially coupled low-density generator-matrix ensembles when used for transmission over binary-input memoryless output-symmetric channels. We show by means of density evolution that the threshold saturation phenomenon also takes place in this setting. Our motivation for studying low-density generator-matrix codes is that they can easily be converted into rateless codes. Although there are already several classes of excellent rateless codes known to date, rateless codes constructed via spatial coupling might offer some additional advantages. In particular, by the very nature of the threshold phenomenon one expects that codes constructed on this principle can be made to be universal, i.e., a single construction can uniformly approach capacity over the cl...

  10. Testing algebraic geometric codes

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Property testing was initially studied from various motivations in 1990’s. A code C  GF (r)n is locally testable if there is a randomized algorithm which can distinguish with high possibility the codewords from a vector essentially far from the code by only accessing a very small (typically constant) number of the vector’s coordinates. The problem of testing codes was firstly studied by Blum, Luby and Rubinfeld and closely related to probabilistically checkable proofs (PCPs). How to characterize locally testable codes is a complex and challenge problem. The local tests have been studied for Reed-Solomon (RS), Reed-Muller (RM), cyclic, dual of BCH and the trace subcode of algebraicgeometric codes. In this paper we give testers for algebraic geometric codes with linear parameters (as functions of dimensions). We also give a moderate condition under which the family of algebraic geometric codes cannot be locally testable.

  11. Testing algebraic geometric codes

    Institute of Scientific and Technical Information of China (English)

    CHEN Hao

    2009-01-01

    Property testing was initially studied from various motivations in 1990's.A code C (∩)GF(r)n is locally testable if there is a randomized algorithm which can distinguish with high possibility the codewords from a vector essentially far from the code by only accessing a very small (typically constant) number of the vector's coordinates.The problem of testing codes was firstly studied by Blum,Luby and Rubinfeld and closely related to probabilistically checkable proofs (PCPs).How to characterize locally testable codes is a complex and challenge problem.The local tests have been studied for Reed-Solomon (RS),Reed-Muller (RM),cyclic,dual of BCH and the trace subcode of algebraicgeometric codes.In this paper we give testers for algebraic geometric codes with linear parameters (as functions of dimensions).We also give a moderate condition under which the family of algebraic geometric codes cannot be locally testable.

  12. Chinese remainder codes

    Institute of Scientific and Technical Information of China (English)

    ZHANG Aili; LIU Xiufeng

    2006-01-01

    Chinese remainder codes are constructed by applying weak block designs and the Chinese remainder theorem of ring theory.The new type of linear codes take the congruence class in the congruence class ring R/I1 ∩ I2 ∩…∩ In for the information bit,embed R/Ji into R/I1 ∩ I2 ∩…∩ In,and assign the cosets of R/Ji as the subring of R/I1 ∩ I2 ∩…∩ In and the cosets of R/Ji in R/I1 ∩ I2 ∩…∩ In as check lines.Many code classes exist in the Chinese remainder codes that have high code rates.Chinese remainder codes are the essential generalization of Sun Zi codes.

  13. Chinese Remainder Codes

    Institute of Scientific and Technical Information of China (English)

    张爱丽; 刘秀峰; 靳蕃

    2004-01-01

    Chinese Remainder Codes are constructed by applying weak block designs and Chinese Remainder Theorem of ring theory. The new type of linear codes take the congruence class in the congruence class ring R/I1∩I2∩…∩In for the information bit, embed R/Ji into R/I1∩I2∩…∩In, and asssign the cosets of R/Ji as the subring of R/I1∩I2∩…∩In and the cosets of R/Ji in R/I1∩I2∩…∩In as check lines. There exist many code classes in Chinese Remainder Codes, which have high code rates. Chinese Remainder Codes are the essential generalization of Sun Zi Codes.

  14. Effects of Induction Heat Bending Process on Microstructure and Corrosion Properties of ASME SA312 Gr.TP304 Stainless Steel Pipes

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Nam In; Kim, Young Sik [Andong National University, Andong (Korea, Republic of); Kim, Kyung Soo; Chang, Hyun Young; Park, Heung Bae; Sung, Gi Ho [KEPCO Engineering and Construction Company, Seongnam (Korea, Republic of); Sung, Gi Ho [R and D Center, Busan (Korea, Republic of)

    2015-06-15

    The usage of bending products recently have increased since many industries such as automobile, aerospace, shipbuilding, and chemical plants need the application of pipings. Bending process is one of the inevitable steps to fabricate the facilities. Induction heat bending is composed of compressive bending process by local heating and cooling. This work focused on the effect of induction heat bending process on the properties of ASME SA312 Gr. TP304 stainless steel pipes. Tests were performed for base metal and bended area including extrados, intrados, crown up, and down parts. Microstructure was analyzed using an optical microscope and SEM. In order to determine intergranular corrosion resistance, Double Loop Electrochemical Potentiokinetic Reactivation (DL-EPR) test and ASTM A262 practice A and C tests were done. Every specimen revealed non-metallic inclusion free under the criteria of 1.5i of the standard and the induction heat bending process did not affect the non-metallic inclusion in the alloys. Also, all the bended specimens had finer grain size than ASTM grain size number 5 corresponding to the grain sizes of the base metal and thus the grain size of the pipe bended by induction heat bending process is acceptable. Hardness of transition start, bend, and transition end areas of ASME SA312 TP304 stainless steel was a little higher than that of base metal. Intergranular corrosion behavior was determined by ASTM A262 practice A and C and DL-EPR test, and respectively step structure, corrosion rate under 0.3 mm/y, and Degree of Sensitization (DOS) of 0.001 - 0.075 % were obtained. That is, the induction heat bending process didn't affect the intergranular corrosion behavior of ASME SA312 TP304 stainless steel.

  15. Comportamiento de variables clínico-epidemiológicas en pacientes asmáticos. Consultorio Médico de Familia 14, Puerto Padre

    OpenAIRE

    José Ramón Martínez Pérez; Lourdes Leonor Bermúdez Cordoví; Karel Gómez García; Alianet Guerrero Cruz; Liliam Pérez Bauzá

    2015-01-01

    Se realizó un estudio descriptivo de corte transversal en 40 pacientes asmáticos de todas las edades, pertenecientes al Consultorio 14 del área de salud de Puerto Padre, provincia de Las Tunas, durante los meses de enero a junio de 2008; con el objetivo de determinar el comportamiento de variables clínico-epidemiológicas en dichos pacientes. Para cumplimentar los objetivos se diseñó una encuesta que recogió las variables de interés. El análisis se hizo a través del sistema Statistix, permitie...

  16. Função respiratória em filhos de mães asmáticas

    Directory of Open Access Journals (Sweden)

    Marco A. Valadares

    2013-04-01

    Full Text Available OBJETIVO: Avaliar a função pulmonar e as manifestações clínicas sugestivas de asma em filhos de mães com diagnóstico médico referido de asma. MÉTODOS: Estudo observacional transversal analítico aninhado a uma coorte de 4.757 parturientes. Foram avaliadas 86 crianças aos seis anos de idade, filhas de mães com diagnóstico médico de asma antes da gestação. Foram coletadas informações referentes a sintomatologias clínicas de atopias e doenças respiratórias, variáveis socioeconômicas e de exposição; tendo sido as crianças submetidas à espirometria. RESULTADOS: Foram encontrados 30,3% de alterações espirométricas, havendo predomínio do diagnóstico de asma nos que apresentaram padrão obstrutivo. Diagnóstico médico pregresso de asma ocorreu em 9,3% das crianças; contudo, o diagnóstico estabelecido a partir da presença e frequência dos sintomas de asma representou 18,6%. Das 86 crianças participantes, 37,2% tiveram um escore de cinco ou mais pontos no questionário ISAAC, estando isso associado à alteração do padrão espirométrico (p = 0,002. Após a regressão logística múltipla, maior escolaridade paterna, maior número de quartos no domicílio e o fato de a mãe não ter apresentado "chiado" durante a gestação foram estatisticamente significantes como fatores protetores para a presença de distúrbio ventilatório à espirometria. CONCLUSÕES: A frequência de alterações do teste espirométrico em filhos de mães asmáticas foi alta, com o padrão restritivo ocorrendo mais vezes que o obstrutivo. Houve uma maior ocorrência de exames obstrutivos naqueles que apresentavam sintomatologia clínica de asma, com uma frequência de diagnóstico clínico de asma superior à encontrada na literatura.

  17. Assessment of the primary loads in pipes with D/t larger 50 according to the nuclear codes; Nachweis der primaeren Spannungen in Rohrleitungen mit D/t > 50 im Rahmen des kerntechnischen Regelwerkes

    Energy Technology Data Exchange (ETDEWEB)

    Mittermueller, F.; Santovito, M.; Schau, H. [TUeV Sued Energietechnik GmbH (Germany)

    2008-07-01

    The German code KTA 3211.2 for the evaluation of primary stresses in piping systems includes stress indices B2 that are only valid for S/t smaller or equal 50. According to KTA 3211.2 under certain conditions the primary stresses for pipes (test group A 2/3) can also be calculated using stress factors i, that are valid for D/t smaller or equal 100. The ASME Code revision 2007 contains stress indices for the total range 50-100. The contribution compares the allowable moment values based on B2 and on the i-factors for thin-walled pipes under low inner pressure. It is shown that for pipes with D/t about 50 the i-factors give significantly higher moments. Using the B2 stress indices as found in the ASME code even higher differences of the allowable moments are found. The authors' FE calculations performed for straight pipes with D/t = 100 taking into account imperfections revealed the necessity of corrections for the B2 values (D/t larger 50) given in KTA. This fact is confirmed by an evaluation of experimental data in the published literature. The reason is among others the failure behaviour of thin-walled pipes that do not fail in the elastic-plastic range by plastic strains but by buckling. It is recommended to surrender in KTA 3211.2 the requirement of an evaluation based on i-factors and to include the corrections for stress indices from the ASME code. [German] Die in der KTA 3211.2 fuer den Nachweis der primaeren Spannungen in Rohrleitungen angegebenen Spannungsbeiwerte B{sub 2} sind nur fuer D/t {<=} 50 gueltig. Nach KTA 3211.2 kann unter bestimmten Bedingungen der Primaerspannungsnachweis fuer Rohrleitungen der Pruefgruppe A2/3 auch unter Verwendung der Spannungsfaktoren i erfolgen, welche im Bereich D/t {<=} 100 gueltig sind. In der neuen Revision 2007 des ASME Code werden auch fuer Rohrleitungen mit 50 < D/t {<=} 100 Spannungsbeiwerte angegeben. In dem vorliegenden Beitrag werden die nach KTA 3211.2 zulaessigen Momente sowohl auf Grundlage der

  18. Singly-even self-dual codes with minimal shadow

    CERN Document Server

    Bouyuklieva, Stefka

    2011-01-01

    In this note we investigate extremal singly-even self-dual codes with minimal shadow. For particular parameters we prove non-existence of such codes. By a result of Rains \\cite{Rains-asymptotic}, the length of extremal singly-even self-dual codes is bounded. We give explicit bounds in case the shadow is minimal.

  19. The maximum number of minimal codewords in long codes

    DEFF Research Database (Denmark)

    Alahmadi, A.; Aldred, R.E.L.; dela Cruz, R.;

    2013-01-01

    Upper bounds on the maximum number of minimal codewords in a binary code follow from the theory of matroids. Random coding provides lower bounds. In this paper, we compare these bounds with analogous bounds for the cycle code of graphs. This problem (in the graphic case) was considered in 1981...

  20. CONSTRUCTION OF AUTHENTICATION CODES WITH ARBITRATION FROM UNITARY GEOMETRY

    Institute of Scientific and Technical Information of China (English)

    LiRuihu; OuoLuobin

    1999-01-01

    A family of authentication codes with arbitration is constructed from unitary geome-try,the parameters and the probabilities of deceptions of the codes are also computed. In a spe-cial case a perfect authentication code with arbitration is ohtalned.

  1. Coded continuous wave meteor radar

    Science.gov (United States)

    Vierinen, Juha; Chau, Jorge L.; Pfeffer, Nico; Clahsen, Matthias; Stober, Gunter

    2016-03-01

    The concept of a coded continuous wave specular meteor radar (SMR) is described. The radar uses a continuously transmitted pseudorandom phase-modulated waveform, which has several advantages compared to conventional pulsed SMRs. The coding avoids range and Doppler aliasing, which are in some cases problematic with pulsed radars. Continuous transmissions maximize pulse compression gain, allowing operation at lower peak power than a pulsed system. With continuous coding, the temporal and spectral resolution are not dependent on the transmit waveform and they can be fairly flexibly changed after performing a measurement. The low signal-to-noise ratio before pulse compression, combined with independent pseudorandom transmit waveforms, allows multiple geographically separated transmitters to be used in the same frequency band simultaneously without significantly interfering with each other. Because the same frequency band can be used by multiple transmitters, the same interferometric receiver antennas can be used to receive multiple transmitters at the same time. The principles of the signal processing are discussed, in addition to discussion of several practical ways to increase computation speed, and how to optimally detect meteor echoes. Measurements from a campaign performed with a coded continuous wave SMR are shown and compared with two standard pulsed SMR measurements. The type of meteor radar described in this paper would be suited for use in a large-scale multi-static network of meteor radar transmitters and receivers. Such a system would be useful for increasing the number of meteor detections to obtain improved meteor radar data products.

  2. Pico do fluxo expiratório no acompanhamento de crianças asmáticas Peak expiratory flow monitoring in asthmatic children

    Directory of Open Access Journals (Sweden)

    Ana Cristina C. F. Fonseca

    2006-12-01

    Full Text Available OBJETIVO: Correlacionar as medidas de volume expiratório forçado no primeiro segundo (VEF1, pico do fluxo expiratório (PFE e parâmetros clínicos em crianças com asma moderada a grave. MÉTODOS: Trata-se de um estudo de coorte não concorrente, realizado em ambulatório de pneumologia pediátrica, em Belo Horizonte, MG, de março a outubro de 2002. Participaram do estudo crianças entre 5 e 16 anos, com asma persistente, em uso de beclometasona na dosagem mínima de 500 mcg/dia, com sintomas controlados há pelo menos 3 meses. Foram selecionados 75 pacientes (96,1% de forma aleatória simples, os quais foram acompanhados durante 3 meses, sendo avaliados o escore clínico e as provas de função pulmonar (PFE e VEF1. Os resultados foram analisados através da regressão linear de Pearson. RESULTADOS: Entre os valores absolutos e percentuais do PFE e o escore clínico, a correlação foi negativa e muito próxima a zero, o que significa uma correlação fraca, sem significância estatística. O mesmo se observa entre VEF1 e escore clínico. A correlação entre VEF1 e PFE apresentou valor positivo e com significância estatística (p = 0,000. CONCLUSÕES: Como o melhor parâmetro para avaliar obstrução de vias aéreas é o VEF1, o encontro de correlação positiva entre este e os valores absolutos do PFE reforça a importância do seu uso e permite recomendar a mensuração do PFE no manejo das crianças asmáticas, sobretudo nos casos graves.OBJECTIVE:To correlate forced expiratory volume in 1 second (VEF1 and peak expiratory flow (PEF with clinical parameters in children with moderate and severe asthma. METHODS: This was a non-concurrent cohort study, carried out at a pediatric pneumology clinic, in Belo Horizonte, MG, Brazil, between March and October 2002. The study enrolled children aged 5 to 16 years, with persistent asthma, being treated with a minimum of 500 mcg/day beclomethasone, and with symptoms under control for at least 3

  3. Exponential Lower Bound for 2-Query Locally Decodable Codes

    CERN Document Server

    Kerenidis, I; Kerenidis, Iordanis; Wolf, Ronald de

    2002-01-01

    We prove exponential lower bounds on the length of 2-query locally decodable codes. Goldreich et al. recently proved such bounds for the special case of linear locally decodable codes. Our proof shows that a 2-query locally decodable code can be decoded with only 1 quantum query, and then proves an exponential lower bound for such 1-query locally quantum-decodable codes. We also exhibit q-query locally quantum-decodable codes that are much shorter than the best known q-query classical codes. Finally, we give some new lower bounds for (not necessarily linear) private information retrieval systems.

  4. Opening up codings?

    DEFF Research Database (Denmark)

    Steensig, Jakob; Heinemann, Trine

    2015-01-01

    doing formal coding and when doing more “traditional” conversation analysis research based on collections. We are more wary, however, of the implication that coding-based research is the end result of a process that starts with qualitative investigations and ends with categories that can be coded....... Instead we propose that the promise of coding-based research lies in its ability to open up new qualitative questions.......We welcome Tanya Stivers’s discussion (Stivers, 2015/this issue) of coding social interaction and find that her descriptions of the processes of coding open up important avenues for discussion, among other things of the precise ad hoc considerations that researchers need to bear in mind, both when...

  5. The Aesthetics of Coding

    DEFF Research Database (Denmark)

    Andersen, Christian Ulrik

    2007-01-01

    avant-garde’. In line with Cramer, the artists Alex McLean and Adrian Ward (aka Slub) declare: “art-oriented programming needs to acknowledge the conditions of its own making – its poesis.” By analysing the Live Coding performances of Slub (where they program computer music live), the presentation......Computer art is often associated with computer-generated expressions (digitally manipulated audio/images in music, video, stage design, media facades, etc.). In recent computer art, however, the code-text itself – not the generated output – has become the artwork (Perl Poetry, ASCII Art, obfuscated...... code, etc.). The presentation relates this artistic fascination of code to a media critique expressed by Florian Cramer, claiming that the graphical interface represents a media separation (of text/code and image) causing alienation to the computer’s materiality. Cramer is thus the voice of a new ‘code...

  6. Generating code adapted for interlinking legacy scalar code and extended vector code

    Science.gov (United States)

    Gschwind, Michael K

    2013-06-04

    Mechanisms for intermixing code are provided. Source code is received for compilation using an extended Application Binary Interface (ABI) that extends a legacy ABI and uses a different register configuration than the legacy ABI. First compiled code is generated based on the source code, the first compiled code comprising code for accommodating the difference in register configurations used by the extended ABI and the legacy ABI. The first compiled code and second compiled code are intermixed to generate intermixed code, the second compiled code being compiled code that uses the legacy ABI. The intermixed code comprises at least one call instruction that is one of a call from the first compiled code to the second compiled code or a call from the second compiled code to the first compiled code. The code for accommodating the difference in register configurations is associated with the at least one call instruction.

  7. Security of QR Codes

    OpenAIRE

    Kapsalis, Ioannis

    2013-01-01

    The 2-dimensional barcodes known as QR (Quick Response) Codesare increasing their popularity as they appear in more places in theurban environment. QR Codes can be considered as physical hyper-linksthat give the ability to users to access, through their mobile devicesthat are able to scan QR Codes, additional information located in aweb-page. Apart from marketing, QR Codes have been also adopted indifferent areas such as the on-line payments. This development alongwith the trend that some of ...

  8. Practices in Code Discoverability

    OpenAIRE

    Teuben, Peter; Allen, Alice; Nemiroff, Robert J.; Shamir, Lior

    2012-01-01

    Much of scientific progress now hinges on the reliability, falsifiability and reproducibility of computer source codes. Astrophysics in particular is a discipline that today leads other sciences in making useful scientific components freely available online, including data, abstracts, preprints, and fully published papers, yet even today many astrophysics source codes remain hidden from public view. We review the importance and history of source codes in astrophysics and previous efforts to d...

  9. The aeroelastic code FLEXLAST

    Energy Technology Data Exchange (ETDEWEB)

    Visser, B. [Stork Product Eng., Amsterdam (Netherlands)

    1996-09-01

    To support the discussion on aeroelastic codes, a description of the code FLEXLAST was given and experiences within benchmarks and measurement programmes were summarized. The code FLEXLAST has been developed since 1982 at Stork Product Engineering (SPE). Since 1992 FLEXLAST has been used by Dutch industries for wind turbine and rotor design. Based on the comparison with measurements, it can be concluded that the main shortcomings of wind turbine modelling lie in the field of aerodynamics, wind field and wake modelling. (au)

  10. Progressive fractal coding

    OpenAIRE

    Kopilovic, Ivan; Saupe, Dietmar; Hamzaoui, Raouf

    2001-01-01

    Progressive coding is an important feature of compression schemes. Wavelet coders are well suited for this purpose because the wavelet coefficients can be naturally ordered according to decreasing importance. Progressive fractal coding is feasible, but it was proposed only for hybrid fractal-wavelet schemes. We introduce a progressive fractal image coder in the spatial domain. A Lagrange optimization based on rate-distortion performance estimates determines an optimal ordering of the code bit...

  11. Tokamak Systems Code

    International Nuclear Information System (INIS)

    The FEDC Tokamak Systems Code calculates tokamak performance, cost, and configuration as a function of plasma engineering parameters. This version of the code models experimental tokamaks. It does not currently consider tokamak configurations that generate electrical power or incorporate breeding blankets. The code has a modular (or subroutine) structure to allow independent modeling for each major tokamak component or system. A primary benefit of modularization is that a component module may be updated without disturbing the remainder of the systems code as long as the imput to or output from the module remains unchanged

  12. QR codes for dummies

    CERN Document Server

    Waters, Joe

    2012-01-01

    Find out how to effectively create, use, and track QR codes QR (Quick Response) codes are popping up everywhere, and businesses are reaping the rewards. Get in on the action with the no-nonsense advice in this streamlined, portable guide. You'll find out how to get started, plan your strategy, and actually create the codes. Then you'll learn to link codes to mobile-friendly content, track your results, and develop ways to give your customers value that will keep them coming back. It's all presented in the straightforward style you've come to know and love, with a dash of humor thrown

  13. ARC Code TI: ACCEPT

    Data.gov (United States)

    National Aeronautics and Space Administration — ACCEPT consists of an overall software infrastructure framework and two main software components. The software infrastructure framework consists of code written to...

  14. Broncoespasmo induzido pelo exercício em adolescentes asmáticos obesos e não-obesos Exercise-induced bronchospasm in obese and non-obese asthmatic adolescents

    OpenAIRE

    Wendell Arthur Lopes; Nelson Rosário; Neiva Leite

    2010-01-01

    OBJETIVO: Avaliar e comparar a frequência e intensidade do broncoespasmo induzido pelo exercício (BIE) em adolescentes asmáticos obesos e não-obesos. MÉTODOS: Estudo transversal e descritivo realizado com 39 adolescentes de ambos os sexos, com idade entre dez e 16 anos, divididos em dois grupos conforme o histórico clínico de asma e/ou rinite alérgica e o índice de massa corporal: asmáticos obesos (n=18); asmáticos não-obesos (n=21). Utilizou-se o teste de broncoprovocação com exercício para ...

  15. Construction of New Delay-Tolerant Space-Time Codes

    CERN Document Server

    Sarkiss, Mireille; Damen, Mohamed Oussama; Belfiore, Jean-Claude

    2010-01-01

    Perfect Space-Time Codes (STC) are optimal codes in their original construction for Multiple Input Multiple Output (MIMO) systems. Based on Cyclic Division Algebras (CDA), they are full-rate, full-diversity codes, have Non-Vanishing Determinants (NVD) and hence achieve Diversity-Multiplexing Tradeoff (DMT). In addition, these codes have led to optimal distributed space-time codes when applied in cooperative networks under the assumption of perfect synchronization between relays. However, they loose their diversity when delays are introduced and thus are not delay-tolerant. In this paper, using the cyclic division algebras of perfect codes, we construct new codes that maintain the same properties as perfect codes in the synchronous case. Moreover, these codes preserve their full-diversity in asynchronous transmission.

  16. On Metrics for Error Correction in Network Coding

    CERN Document Server

    Silva, Danilo

    2008-01-01

    The problem of error correction in both coherent and noncoherent network coding is considered under an adversarial model. For coherent network coding, where knowledge of the network topology and network code is assumed at the source and destination nodes, the error correction capability of an (outer) code is succinctly described by the rank metric; as a consequence, it is shown that universal network error correcting codes achieving the Singleton bound can be easily constructed and efficiently decoded. For noncoherent network coding, where knowledge of the network topology and network code is not assumed, the error correction capability of a (subspace) code is given exactly by a modified subspace metric, which is closely related to, but different than, the subspace metric of K\\"otter and Kschischang. In particular, in the case of a non-constant-dimension code, the decoder associated with the modified metric is shown to correct more errors then a minimum subspace distance decoder.

  17. A study of outburst ephemeris and burst properties of blackhole candidate 4U 1630-47 with ASM, MAXI and Suzaku data

    Science.gov (United States)

    Abraham, Lalitha; Agrawal, V. K.

    4U 1630-47 is a soft X-ray transient which is thought to be a blackhole candidate. This source exhibits quasi-periodic outbursts on time scales of 500-700 days. In addition to the normal outbursts which usually last for a few months, the source displays superoutbursts, lasting for one to two years, seen to recur in every 10-12 years. The outburst ephemeris has been studied previously upto 1996 outbursts. In this work we present the updated ephemeris using 16 years data obtained from All Sky Monitor (ASM) onboard RXTE and one years data from MAXI satellite. The data covers 7 outbursts seen from ASM and one outburst seen by MAXI. We study morphology of each of these outbursts. We find that most of the bursts can be classified in basic three categories: flat top, FRED (Fast Rise Exponential Decay) and triangular. We also investigate relation between burst properties with quiescent flux level using Suzaku data, a study which has not been done previously.

  18. Efecto de budesonida sobre la densidad y el metabolismo óseo en niños asmáticos

    Directory of Open Access Journals (Sweden)

    Paoli de Valeri Mariela

    2000-01-01

    Full Text Available OBJETIVO: Determinar el efecto de la administración de budesonida inhalado sobre la densidad, el contenido mineral y el metabolismo óseo en niños asmáticos. MATERIAL Y MÉTODOS: Estudio transversal realizado de septiembre de 1996 a julio de 1997, en el que se estudiaron 38 niños y niñas de entre 6 y 11 años de edad, seleccionados de la consulta externa de neumonología infantil del Instituto Autónomo Hospital Universitario de Los Andes, Mérida, Venezuela. Se constituyeron tres grupos: nueve niños asmáticos tratados con budesonida inhalado (300 µg/día en promedio durante más de seis meses, (grupo A, 14 niños asmáticos que no recibieron tratamiento esteroideo (grupo B y 15 niños no asmáticos (grupo C. A todos se les practicó una evaluación ósea con marcadores de formación y resorción y con una medición de la densidad (DMO y el contenido mineral óseo (CMO. Se calcularon medidas de tendencia central y de dispersión, se realizó análisis de varianza, y se utilizaron las pruebas de Fisher y Scheffé para comparación de medias. RESULTADOS: En los grupos estudiados (A, B y C los niveles séricos de calcio fueron 9.1±0.3; 9.6±0.4; 9.3±0.6 mg/ml; los de osteocalcina fueron 14.8±4.6; 13.0±2.5; 11.9±3.4 ng/dl; los de telopéptido carboxiterminal del colágeno tipo I (ICTP fueron 19.6±16.5; 14.2±15.4; 13.0±18.3 µg/l; la DMO fue de 0.67±0.06; 0.68±0.06; 0.69±0.06 g/cm², y el CMO fue de 1 158.8±217.4; 1 106.4±256.1; 1 176.5±240.5 g, respectivamente. No hubo diferencias significativas entre los grupos. CONCLUSIONES: La administración de budesonida inhalada en dosis de 100 a 400 µg/día por un periodo de seis meses no produce modificaciones en la densidad y en el metabolismo óseo en niños asmáticos.

  19. Research on universal combinatorial coding.

    Science.gov (United States)

    Lu, Jun; Zhang, Zhuo; Mo, Juan

    2014-01-01

    The conception of universal combinatorial coding is proposed. Relations exist more or less in many coding methods. It means that a kind of universal coding method is objectively existent. It can be a bridge connecting many coding methods. Universal combinatorial coding is lossless and it is based on the combinatorics theory. The combinational and exhaustive property make it closely related with the existing code methods. Universal combinatorial coding does not depend on the probability statistic characteristic of information source, and it has the characteristics across three coding branches. It has analyzed the relationship between the universal combinatorial coding and the variety of coding method and has researched many applications technologies of this coding method. In addition, the efficiency of universal combinatorial coding is analyzed theoretically. The multicharacteristic and multiapplication of universal combinatorial coding are unique in the existing coding methods. Universal combinatorial coding has theoretical research and practical application value.

  20. The NMC code: conduct, performance and ethics.

    Science.gov (United States)

    Goldsmith, Jan

    The Code: Standards of Conduct, Performance and Ethics for Nurses and Midwives is a set of key principles that should underpin the practice of all nurses and midwives, and remind them of their professional responsibilities. It is not just a tool used in fitness-to-practise cases--it should be used to guide daily practice for all nurses and midwives. Alongside other standards, guidance and advice from the NMC, the code should be used to support professional development. PMID:22010552

  1. Selected topics on distributed video coding

    OpenAIRE

    Ouaret, Mourad; Ebrahimi, Touradj

    2009-01-01

    Distributed Video Coding (DVC) is a new paradigm for video compression based on the information theoretical results of Slepian and Wolf (SW), and Wyner and Ziv (WZ). While conventional coding has a rigid complexity allocation as most of the complex tasks are performed at the encoder side, DVC enables a flexible complexity allocation between the encoder and the decoder. The most novel and interesting case is low complexity encoding and complex decoding, which is the opposite of conventional co...

  2. Secure Source Coding with a Helper

    CERN Document Server

    Tandon, Ravi; Ramchandran, Kannan

    2009-01-01

    We consider a secure lossless source coding problem with a rate-limited helper. In particular, Alice observes an i.i.d. source $X^{n}$ and wishes to transmit this source losslessly to Bob at a rate $R_{x}$. A helper, say Helen, observes a correlated source $Y^{n}$ and transmits at a rate $R_{y}$ to Bob. A passive eavesdropper can observe the coded output of Alice. The equivocation $\\Delta$ is measured by the conditional entropy $H(X^{n}|J_{x})/n$, where $J_{x}$ is the coded output of Alice. We first completely characterize the rate-equivocation region for this secure source coding model, where we show that Slepian-Wolf type coding is optimal. We next study two generalizations of this model and provide single-letter characterizations for the respective rate-equivocation regions. In particular, we first consider the case of a two-sided helper where Alice also has access to the coded output of Helen. We show that for this case, Slepian-Wolf type coding is suboptimal and one can further decrease the information l...

  3. Code Generation Framework for Grid Development

    Institute of Scientific and Technical Information of China (English)

    JIANG Ling-yun; WANG Ru-chuan; WANG Hai-yan

    2006-01-01

    While grid computing receives more and more attentions, it is not widely used partly due to requirement of sophisticated development. This paper discusses a code generation framework for grid computing. We firstly introduce GBuilder as a rapid development tool for building grid computing applications, then present the details of the code generation framework. We then discuss a case study to show the advantages of the whole processing of code generation framework,which including saved development time and less intricacy burden on the grid application developers.

  4. Preliminary Coupling of MATRA Code for Multi-physics Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Seongjin; Choi, Jinyoung; Yang, Yongsik; Kwon, Hyouk; Hwang, Daehyun [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2014-05-15

    The boundary conditions such as the inlet temperature, mass flux, averaged heat flux, power distributions of the rods, and core geometry is given by constant values or functions of time. These conditions are separately calculated and provided by other codes, such as a neutronics or a system codes, into the MATRA code. In addition, the coupling of several codes in the different physics field is focused and embodied. In this study, multiphysics coupling methods were developed for a subchannel code (MATRA) with neutronics codes (MASTER, DeCART) and a fuel performance code (FRAPCON-3). Preliminary evaluation results for representative sample cases are presented. The MASTER and DeCART codes provide the power distribution of the rods in the core to the MATRA code. In case of the FRAPCON-3 code, the variation of the rod diameter induced by the thermal expansion is yielded and provided. The MATRA code transfers the thermal-hydraulic conditions that each code needs. Moreover, the coupling method with each code is described.

  5. Lifetime maximization routing with network coding in wireless multihop networks

    Institute of Scientific and Technical Information of China (English)

    DING LiangHui; WU Ping; WANG Hao; PAN ZhiWen; YOU XiaoHu

    2013-01-01

    In this paper, we consider the lifetime maximization routing with network coding in wireless mul- tihop networks. We first show that lifetime maximization with network coding is different from pure routing, throughput maximization with network coding and energy minimization with network coding. Then we formulate lifetime maximization problems in three different cases of (i) no network coding, (ii) two-way network coding, and (iii) overhearing network coding. To solve these problems, we use flow augmenting routing (FA) for the first case, and then extend the FA with network coding (FANC) by using energy minimized one-hop network coding. After that, we investigate the influence of parameters of FANC, evaluate the performance of FANC with two-way and overhearing network coding schemes and compare it with that without network coding under two different power control models, namely, protocol and physical ones. The results show that the lifetime can be improved significantly by using network coding, and the performance gain of network coding decreases with the increase of flow asymmetry and the power control ability.

  6. Code Generation = A* + BURS

    NARCIS (Netherlands)

    Nymeyer, A.; Katoen, J.P.; Westra, Y.; Alblas, H.; Gyimóthy, T.

    1996-01-01

    A system called BURS that is based on term rewrite systems and a search algorithm A* are combined to produce a code generator that generates optimal code. The theory underlying BURS is re-developed, formalised and explained in this work. The search algorithm uses a cost heuristic that is derived fro

  7. Nuremberg code turns 60

    OpenAIRE

    Thieren, Michel; Mauron, Alex

    2007-01-01

    This month marks sixty years since the Nuremberg code – the basic text of modern medical ethics – was issued. The principles in this code were articulated in the context of the Nuremberg trials in 1947. We would like to use this anniversary to examine its ability to address the ethical challenges of our time.

  8. Code of Ethics

    Science.gov (United States)

    Division for Early Childhood, Council for Exceptional Children, 2009

    2009-01-01

    The Code of Ethics of the Division for Early Childhood (DEC) of the Council for Exceptional Children is a public statement of principles and practice guidelines supported by the mission of DEC. The foundation of this Code is based on sound ethical reasoning related to professional practice with young children with disabilities and their families…

  9. Codes of Conduct

    Science.gov (United States)

    Million, June

    2004-01-01

    Most schools have a code of conduct, pledge, or behavioral standards, set by the district or school board with the school community. In this article, the author features some schools that created a new vision of instilling code of conducts to students based on work quality, respect, safety and courtesy. She suggests that communicating the code…

  10. Code A1 Revised

    CERN Multimedia

    SC Secretariat

    2004-01-01

    Please note that the revised safety code A1 entitled 'MEDICAL CODE' is available on the web at the following url: https://edms.cern.ch/document/335476/last_released Paper copies can also be obtained from the SC Secretariat, e-mail : sc.secretariat@cern.ch SC Secretariat

  11. Safety Code A12

    CERN Multimedia

    SC Secretariat

    2005-01-01

    Please note that the Safety Code A12 (Code A12) entitled "THE SAFETY COMMISSION (SC)" is available on the web at the following url: https://edms.cern.ch/document/479423/LAST_RELEASED Paper copies can also be obtained from the SC Unit Secretariat, e-mail: sc.secretariat@cern.ch SC Secretariat

  12. Computerized mega code recording.

    Science.gov (United States)

    Burt, T W; Bock, H C

    1988-04-01

    A system has been developed to facilitate recording of advanced cardiac life support mega code testing scenarios. By scanning a paper "keyboard" using a bar code wand attached to a portable microcomputer, the person assigned to record the scenario can easily generate an accurate, complete, timed, and typewritten record of the given situations and the obtained responses. PMID:3354937

  13. READING A NEURAL CODE

    NARCIS (Netherlands)

    BIALEK, W; RIEKE, F; VANSTEVENINCK, RRD; WARLAND, D

    1991-01-01

    Traditional approaches to neural coding characterize the encoding of known stimuli in average neural responses. Organisms face nearly the opposite task - extracting information about an unknown time-dependent stimulus from short segments of a spike train. Here the neural code was characterized from

  14. AZIMUT code abstract

    International Nuclear Information System (INIS)

    The brief description of the AZIMUT code for calculation the neutron flux in a cluster cell is presented. Code takes into account 1 and 2 azimuthal harmonics in the one-group P3-approximation and uses the heterogeneous approach. 2 refs

  15. Experimental characterization and modeling of the creep strength at 550 C of ASME Grade 92 steel welded joints

    International Nuclear Information System (INIS)

    In the framework of the development of Generation IV nuclear power plants, ASME Grade 92 ferritic-martensitic steel is a candidate material for components subjected to long-term creep at high temperature. The aim of this study is to characterize the microstructure of Grade 92 butt welded joints and to model their creep behavior at 550 C. Two filler rods were used for this study. The microstructure of the different weld regions was quantitatively characterized. In order to understand the weaker mechanical properties of the ICHAZ compared to the other regions of the welded joint, the microstructures of the base metal and the ICHAZ were compared at different scales (SEM, EBSD, TEM on thin foils and extractive replicas). No significant difference regarding micro-texture, sub-structure and precipitation state was highlighted between both microstructures. The origin of the weaker resistance of the ICHAZ to viscoplastic flow is still not fully understood. A softer zone was found in the base metal close to the ICHAZ, yet with finer sub-grains than the base metal. It was supposed to be a thermo-mechanically-affected zone (TMAZ). At high temperatures and low stress levels, Grade 92 welded joints may be sensitive to type IV cracking, which occurs in the inter-critical heat affected zone (ICHAZ). Creep tests conducted at 550 C on cross-weld specimens revealed that fracture takes place in the ICHAZ, even for short-term creep tests (i.e., lifetime lower than 1000 h). In order to model the creep behavior of the welded joint, viscoplastic constitutive equations for the different regions of the weld assembly were required. The viscoplastic behavior of the base metal, weld metal and of the ICHAZ were modeled using a phenomenological approach. The viscoplastic flow behavior of the weld metal and of the ICHAZ was experimentally determined (i) from tensile tests with displacement field measurements and (ii) from creep tests on tensile bars notched in the region of interest. An

  16. Selective Coding Strategy for Unicast Composite Networks

    CERN Document Server

    Behboodi, Arash

    2012-01-01

    Consider a composite unicast relay network where the channel statistic is randomly drawn from a set of conditional distributions indexed by a random variable, which is assumed to be unknown at the source, fully known at the destination and only partly known at the relays. Commonly, the coding strategy at each relay is fixed regardless of its channel measurement. A novel coding for unicast composite networks with multiple relays is introduced. This enables the relays to select dynamically --based on its channel measurement-- the best coding scheme between compress-and-forward (CF) and decode-and-forward (DF). As a part of the main result, a generalization of Noisy Network Coding is shown for the case of unicast general networks where the relays are divided between those using DF and CF coding. Furthermore, the relays using DF scheme can exploit the help of those based on CF scheme via offset coding. It is demonstrated via numerical results that this novel coding, referred to as Selective Coding Strategy (SCS),...

  17. Astrophysics Source Code Library

    CERN Document Server

    Allen, Alice; Berriman, Bruce; Hanisch, Robert J; Mink, Jessica; Teuben, Peter J

    2012-01-01

    The Astrophysics Source Code Library (ASCL), founded in 1999, is a free on-line registry for source codes of interest to astronomers and astrophysicists. The library is housed on the discussion forum for Astronomy Picture of the Day (APOD) and can be accessed at http://ascl.net. The ASCL has a comprehensive listing that covers a significant number of the astrophysics source codes used to generate results published in or submitted to refereed journals and continues to grow. The ASCL currently has entries for over 500 codes; its records are citable and are indexed by ADS. The editors of the ASCL and members of its Advisory Committee were on hand at a demonstration table in the ADASS poster room to present the ASCL, accept code submissions, show how the ASCL is starting to be used by the astrophysics community, and take questions on and suggestions for improving the resource.

  18. Fracture flow code

    International Nuclear Information System (INIS)

    The hydrology of the SCV site will be modelled utilizing discrete fracture flow models. These models are complex, and can not be fully cerified by comparison to analytical solutions. The best approach for verification of these codes is therefore cross-verification between different codes. This is complicated by the variation in assumptions and solution techniques utilized in different codes. Cross-verification procedures are defined which allow comparison of the codes developed by Harwell Laboratory, Lawrence Berkeley Laboratory, and Golder Associates Inc. Six cross-verification datasets are defined for deterministic and stochastic verification of geometric and flow features of the codes. Additional datasets for verification of transport features will be documented in a future report. (13 figs., 7 tabs., 10 refs.) (authors)

  19. Combustion chamber analysis code

    Science.gov (United States)

    Przekwas, A. J.; Lai, Y. G.; Krishnan, A.; Avva, R. K.; Giridharan, M. G.

    1993-05-01

    A three-dimensional, time dependent, Favre averaged, finite volume Navier-Stokes code has been developed to model compressible and incompressible flows (with and without chemical reactions) in liquid rocket engines. The code has a non-staggered formulation with generalized body-fitted-coordinates (BFC) capability. Higher order differencing methodologies such as MUSCL and Osher-Chakravarthy schemes are available. Turbulent flows can be modeled using any of the five turbulent models present in the code. A two-phase, two-liquid, Lagrangian spray model has been incorporated into the code. Chemical equilibrium and finite rate reaction models are available to model chemically reacting flows. The discrete ordinate method is used to model effects of thermal radiation. The code has been validated extensively against benchmark experimental data and has been applied to model flows in several propulsion system components of the SSME and the STME.

  20. Transformation invariant sparse coding

    DEFF Research Database (Denmark)

    Mørup, Morten; Schmidt, Mikkel Nørgaard

    2011-01-01

    Sparse coding is a well established principle for unsupervised learning. Traditionally, features are extracted in sparse coding in specific locations, however, often we would prefer invariant representation. This paper introduces a general transformation invariant sparse coding (TISC) model....... The model decomposes images into features invariant to location and general transformation by a set of specified operators as well as a sparse coding matrix indicating where and to what degree in the original image these features are present. The TISC model is in general overcomplete and we therefore invoke...... sparse coding to estimate its parameters. We demonstrate how the model can correctly identify components of non-trivial artificial as well as real image data. Thus, the model is capable of reducing feature redundancies in terms of pre-specified transformations improving the component identification....

  1. Verification of seismic analysis codes by means of test data

    International Nuclear Information System (INIS)

    The seismic response analyses, response analyses for the forced vibration tests and static nonlinear analyses were performed by use of 6 SAN series codes on 5 seismic tests, and the analytical and test results were compared with each other for each case. Both the results agreed well in every cases, and the reliability and effectiveness of the above mentioned codes have been verified. (author)

  2. Application of RS Codes in Decoding QR Code

    Institute of Scientific and Technical Information of China (English)

    Zhu Suxia(朱素霞); Ji Zhenzhou; Cao Zhiyan

    2003-01-01

    The QR Code is a 2-dimensional matrix code with high error correction capability. It employs RS codes to generate error correction codewords in encoding and recover errors and damages in decoding. This paper presents several QR Code's virtues, analyzes RS decoding algorithm and gives a software flow chart of decoding the QR Code with RS decoding algorithm.

  3. Report number codes

    International Nuclear Information System (INIS)

    This publication lists all report number codes processed by the Office of Scientific and Technical Information. The report codes are substantially based on the American National Standards Institute, Standard Technical Report Number (STRN)-Format and Creation Z39.23-1983. The Standard Technical Report Number (STRN) provides one of the primary methods of identifying a specific technical report. The STRN consists of two parts: The report code and the sequential number. The report code identifies the issuing organization, a specific program, or a type of document. The sequential number, which is assigned in sequence by each report issuing entity, is not included in this publication. Part I of this compilation is alphabetized by report codes followed by issuing installations. Part II lists the issuing organization followed by the assigned report code(s). In both Parts I and II, the names of issuing organizations appear for the most part in the form used at the time the reports were issued. However, for some of the more prolific installations which have had name changes, all entries have been merged under the current name

  4. Fulcrum Network Codes

    DEFF Research Database (Denmark)

    2015-01-01

    Fulcrum network codes, which are a network coding framework, achieve three objectives: (i) to reduce the overhead per coded packet to almost 1 bit per source packet; (ii) to operate the network using only low field size operations at intermediate nodes, dramatically reducing complexity in the net...... the number of dimensions seen by the network using a linear mapping. Receivers can tradeoff computational effort with network delay, decoding in the high field size, the low field size, or a combination thereof.......Fulcrum network codes, which are a network coding framework, achieve three objectives: (i) to reduce the overhead per coded packet to almost 1 bit per source packet; (ii) to operate the network using only low field size operations at intermediate nodes, dramatically reducing complexity...... in the network; and (iii) to deliver an end-to-end performance that is close to that of a high field size network coding system for high-end receivers while simultaneously catering to low-end ones that can only decode in a lower field size. Sources may encode using a high field size expansion to increase...

  5. Report number codes

    Energy Technology Data Exchange (ETDEWEB)

    Nelson, R.N. (ed.)

    1985-05-01

    This publication lists all report number codes processed by the Office of Scientific and Technical Information. The report codes are substantially based on the American National Standards Institute, Standard Technical Report Number (STRN)-Format and Creation Z39.23-1983. The Standard Technical Report Number (STRN) provides one of the primary methods of identifying a specific technical report. The STRN consists of two parts: The report code and the sequential number. The report code identifies the issuing organization, a specific program, or a type of document. The sequential number, which is assigned in sequence by each report issuing entity, is not included in this publication. Part I of this compilation is alphabetized by report codes followed by issuing installations. Part II lists the issuing organization followed by the assigned report code(s). In both Parts I and II, the names of issuing organizations appear for the most part in the form used at the time the reports were issued. However, for some of the more prolific installations which have had name changes, all entries have been merged under the current name.

  6. Quantum error-correcting codes over mixed alphabets

    Science.gov (United States)

    Wang, Zhuo; Yu, Sixia; Fan, Heng; Oh, C. H.

    2013-08-01

    We study the quantum error-correcting codes over mixed alphabets to deal with a more complicated and practical situation in which the physical systems for encoding may have different numbers of energy levels. In particular we investigate their constructions and propose the theory of quantum Singleton bound. Two kinds of code constructions are presented: a projection-based construction for general case and a graphical construction based on a graph-theoretical object composite coding clique dealing with the case of reducible alphabets. We find out some optimal one-error correcting or detecting codes over two alphabets. Our method of composite coding clique also sheds light on constructing standard quantum error-correcting codes, and other families of optimal codes are found.

  7. Wind energy systems application to regional utilities. [SERIES code; WINDS code; PHASES code; AVERAGE code; NETLOAD code; GENSYS code; PROCOST code; CAP6 code; EVEN code

    Energy Technology Data Exchange (ETDEWEB)

    1979-09-01

    A methodology for analyzing the economic impact of WECS on a utility is described in Volume I of this report. The methodology requires extrapolating both historical utility load data and historical wind power into a year of analysis; calculating the total amount of funds made available in that year, as a result of the inclusion of wind power in the utility mix; and then estimating the present value of the total funds made available to the utility over the life of the WECS. To apply the methodology to a specific case, it was necessary to develop various computer programs. The following sections in this report list the programs developed for this study, briefly summarize their contents, and explain how they are used. Wherever possible, a typical input/output file is shown.

  8. Cryptography cracking codes

    CERN Document Server

    2014-01-01

    While cracking a code might seem like something few of us would encounter in our daily lives, it is actually far more prevalent than we may realize. Anyone who has had personal information taken because of a hacked email account can understand the need for cryptography and the importance of encryption-essentially the need to code information to keep it safe. This detailed volume examines the logic and science behind various ciphers, their real world uses, how codes can be broken, and the use of technology in this oft-overlooked field.

  9. FORIST unfolding code

    International Nuclear Information System (INIS)

    The FERDOR method is widely used to unfold neutron energy spectra from pulse-height distributions measured with NE-213 spectrometers. Two unfolding codes COOLC (developed at ORNL) and FORIST (modified version of COOLC developed at UIUC) implement the FERDOR method and are distributed by RSIC. Each code package contains an NE-213 response matrix, sample input data, and sample output. The smoothing (window) widths which are distributed with COOLC are not the most appropriate for all neutron spectrum measurements. The FORIST code determines an optimum set of window widths according to the desired statistical error in the smoothed spectrum

  10. Classical Holographic Codes

    CERN Document Server

    Brehm, Enrico M

    2016-01-01

    In this work, we introduce classical holographic codes. These can be understood as concatenated probabilistic codes and can be represented as networks uniformly covering hyperbolic space. In particular, classical holographic codes can be interpreted as maps from bulk degrees of freedom to boundary degrees of freedom. Interestingly, they are shown to exhibit features similar to those expected from the AdS/CFT correspondence. Among these are a version of the Ryu-Takayanagi formula and intriguing properties regarding bulk reconstruction and boundary representations of bulk operations. We discuss the relation of our findings with expectations from AdS/CFT and, in particular, with recent results from quantum error correction.

  11. Distributed multiple description coding

    CERN Document Server

    Bai, Huihui; Zhao, Yao

    2011-01-01

    This book examines distributed video coding (DVC) and multiple description coding (MDC), two novel techniques designed to address the problems of conventional image and video compression coding. Covering all fundamental concepts and core technologies, the chapters can also be read as independent and self-sufficient, describing each methodology in sufficient detail to enable readers to repeat the corresponding experiments easily. Topics and features: provides a broad overview of DVC and MDC, from the basic principles to the latest research; covers sub-sampling based MDC, quantization based MDC,

  12. Laser propagation code study

    OpenAIRE

    Rockower, Edward B.

    1985-01-01

    A number of laser propagation codes have been assessed as to their suitability for modeling Army High Energy Laser (HEL) weapons used in an anti- sensor mode. We identify a number of areas in which systems analysis HEL codes are deficient. Most notably, available HEL scaling law codes model the laser aperture as circular, possibly with a fixed (e.g. 10%) obscuration. However, most HELs have rectangular apertures with up to 30% obscuration. We present a beam-quality/aperture shape scaling rela...

  13. Impact of Different Spreading Codes Using FEC on DWT Based MC-CDMA System

    OpenAIRE

    Masum, Saleh; Kabir, M. Hasnat; Islam, Md. Matiqul; Shams, Rifat Ara; Ullah, Shaikh Enayet

    2012-01-01

    The effect of different spreading codes in DWT based MC-CDMA wireless communication system is investigated. In this paper, we present the Bit Error Rate (BER) performance of different spreading codes (Walsh-Hadamard code, Orthogonal gold code and Golay complementary sequences) using Forward Error Correction (FEC) of the proposed system. The data is analyzed and is compared among different spreading codes in both coded and uncoded cases. It is found via computer simulation that the performance...

  14. Economic aspects and models for building codes

    DEFF Research Database (Denmark)

    Bonke, Jens; Pedersen, Dan Ove; Johnsen, Kjeld

    It is the purpose of this bulletin to present an economic model for estimating the consequence of new or changed building codes. The object is to allow comparative analysis in order to improve the basis for decisions in this field. The model is applied in a case study.......It is the purpose of this bulletin to present an economic model for estimating the consequence of new or changed building codes. The object is to allow comparative analysis in order to improve the basis for decisions in this field. The model is applied in a case study....

  15. Comparison of IAEA TECDOC 717 technical basis with consensus codes and standards

    Energy Technology Data Exchange (ETDEWEB)

    Nickell, R.E. [Applied Science and Technology, Inc., Poway, CA (United States); Saegusa, T.; Ito, C. [Central Research Inst. of Electric Power Industry, Abiko, Chiba (Japan). Civil Engineering Lab.; Sorenson, K.B. [Sandia National Labs., Albuquerque, NM (United States)

    1995-09-01

    The original IAEA TECDOC 717 prepared at the consensus Consultants Service Meetings contained specific guidance with respect to the application of linear-elastic fracture mechanics principles to the evaluation of potential non-ductile failure for radioactive material shipping package containment boundaries. No specific guidance was provided with respect to elastic-plastic fracture mechanics procedures, due to a lack of consensus. This paper proposes that the inclusion of three alternative elastic-plastic evaluation approaches may provide the basis for consensus guidance to be added to a revised TECDOC. These three alternatives have been incorporated into consensus ASME Code non-mandatory appendices, and are widely accepted in combination. One of the three alternatives, an applied J-integral/crack resistance curve approach, is examined in some detail. (author).

  16. ADAPTION OF NONSTANDARD PIPING COMPONENTS INTO PRESENT DAY SEISMIC CODES

    Energy Technology Data Exchange (ETDEWEB)

    D. T. Clark; M. J. Russell; R. E. Spears; S. R. Jensen

    2009-07-01

    With spiraling energy demand and flat energy supply, there is a need to extend the life of older nuclear reactors. This sometimes requires that existing systems be evaluated to present day seismic codes. Older reactors built in the 1960s and early 1970s often used fabricated piping components that were code compliant during their initial construction time period, but are outside the standard parameters of present-day piping codes. There are several approaches available to the analyst in evaluating these non-standard components to modern codes. The simplest approach is to use the flexibility factors and stress indices for similar standard components with the assumption that the non-standard component’s flexibility factors and stress indices will be very similar. This approach can require significant engineering judgment. A more rational approach available in Section III of the ASME Boiler and Pressure Vessel Code, which is the subject of this paper, involves calculation of flexibility factors using finite element analysis of the non-standard component. Such analysis allows modeling of geometric and material nonlinearities. Flexibility factors based on these analyses are sensitive to the load magnitudes used in their calculation, load magnitudes that need to be consistent with those produced by the linear system analyses where the flexibility factors are applied. This can lead to iteration, since the magnitude of the loads produced by the linear system analysis depend on the magnitude of the flexibility factors. After the loading applied to the nonstandard component finite element model has been matched to loads produced by the associated linear system model, the component finite element model can then be used to evaluate the performance of the component under the loads with the nonlinear analysis provisions of the Code, should the load levels lead to calculated stresses in excess of Allowable stresses. This paper details the application of component-level finite

  17. Assessment of the computer code COBRA/CFTL

    Energy Technology Data Exchange (ETDEWEB)

    Baxi, C. B.; Burhop, C. J.

    1981-07-01

    The COBRA/CFTL code has been developed by Oak Ridge National Laboratory (ORNL) for thermal-hydraulic analysis of simulated gas-cooled fast breeder reactor (GCFR) core assemblies to be tested in the core flow test loop (CFTL). The COBRA/CFTL code was obtained by modifying the General Atomic code COBRA*GCFR. This report discusses these modifications, compares the two code results for three cases which represent conditions from fully rough turbulent flow to laminar flow. Case 1 represented fully rough turbulent flow in the bundle. Cases 2 and 3 represented laminar and transition flow regimes. The required input for the COBRA/CFTL code, a sample problem input/output and the code listing are included in the Appendices.

  18. Recommendations for codes and standards to be used for design and fabrication of high level waste canister

    International Nuclear Information System (INIS)

    This study identifies codes, standards, and regulatory requirements for developing design criteria for high-level waste (HLW) canisters for commercial operation. It has been determined that the canister should be designed as a pressure vessel without provision for any overpressure protection type devices. It is recommended that the HLW canister be designed and fabricated to the requirements of the ASME Section III Code, Division 1 rules, for Code Class 3 components. Identification of other applicable industry and regulatory guides and standards are provided in this report. Requirements for the Design Specification are found in the ASME Section III Code. It is recommended that design verification be conducted principally with prototype testing which will encompass normal and accident service conditions during all phases of the canister life. Adequacy of existing quality assurance and licensing standards for the canister was investigated. One of the recommendations derived from this study is a requirement that the canister be N stamped. In addition, acceptance standards for the HLW waste should be established and the waste qualified to those standards before the canister is sealed. A preliminary investigation of use of an overpack for the canister has been made, and it is concluded that the use of an overpack, as an integral part of overall canister design, is undesirable, both from a design and economics standpoint. However, use of shipping cask liners and overpack type containers at the Federal repository may make the canister and HLW management safer and more cost effective. There are several possible concepts for canister closure design. These concepts can be adapted to the canister with or without an overpack. A remote seal weld closure is considered to be one of the most suitable closure methods; however, mechanical seals should also be investigated

  19. OCA Code Enforcement

    Data.gov (United States)

    Montgomery County of Maryland — The Office of the County Attorney (OCA) processes Code Violation Citations issued by County agencies. The citations can be viewed by issued department, issued date...

  20. Der Code der Transparenz

    OpenAIRE

    Alloa, Emmanuel

    2015-01-01

    In allen Bereichen der Gesellschaft werden gegenwärtig Forderungen nach mehr Transparenz laut. Was steht hinter diesem Wort? Für Emmanuel Alloa wohnt der Transparenzforderung die Paradoxie inne, ein "codefreier Code" sein zu wollen.

  1. The fast code

    Energy Technology Data Exchange (ETDEWEB)

    Freeman, L.N.; Wilson, R.E. [Oregon State Univ., Dept. of Mechanical Engineering, Corvallis, OR (United States)

    1996-09-01

    The FAST Code which is capable of determining structural loads on a flexible, teetering, horizontal axis wind turbine is described and comparisons of calculated loads with test data are given at two wind speeds for the ESI-80. The FAST Code models a two-bladed HAWT with degrees of freedom for blade bending, teeter, drive train flexibility, yaw, and windwise and crosswind tower motion. The code allows blade dimensions, stiffnesses, and weights to differ and models tower shadow, wind shear, and turbulence. Additionally, dynamic stall is included as are delta-3 and an underslung rotor. Load comparisons are made with ESI-80 test data in the form of power spectral density, rainflow counting, occurrence histograms, and azimuth averaged bin plots. It is concluded that agreement between the FAST Code and test results is good. (au)

  2. Fulcrum Network Codes

    DEFF Research Database (Denmark)

    2015-01-01

    Fulcrum network codes, which are a network coding framework, achieve three objectives: (i) to reduce the overhead per coded packet to almost 1 bit per source packet; (ii) to operate the network using only low field size operations at intermediate nodes, dramatically reducing complexity...... in the network; and (iii) to deliver an end-to-end performance that is close to that of a high field size network coding system for high-end receivers while simultaneously catering to low-end ones that can only decode in a lower field size. Sources may encode using a high field size expansion to increase...... the number of dimensions seen by the network using a linear mapping. Receivers can tradeoff computational effort with network delay, decoding in the high field size, the low field size, or a combination thereof....

  3. Large deformation inelastic analysis of impact for shipping casks. [DYNA3D Code

    Energy Technology Data Exchange (ETDEWEB)

    Charman, C.M.; Grenier, R.M. (General Atomic Co., San Diego, CA (USA)); Nickell, R.E. (Applied Science and Technology, Poway, CA (USA))

    1982-09-01

    This paper describes the use of two- and three-dimensional nonlinear finite element computer programs to design a radioative material transportation cask to withstand a drop of 30 feet onto an unyielding surface. Because of recent advancement in the area of non-linear finite element code development, the use of such codes for an iterative design process is becoming practicable. The paper begins with a section dealing with a two-dimensional side drop analysis and is followed by a discussion of the general capabilities of DYNA3D and a brief discussion of the implementation of the code on a computational mainframe unlike any for which the developer had intended. Then, a section on three-dimensional models of center-of-gravity over a corner impact follows, which introduces design features such as bolted closures, internal impact limiter, seals and shear rings. Figs. showing the deformed model grids are included. Stress and strain results are given in the subsequent section. Finally, we interpret these results in terms of possible rules being developed by the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code committees.

  4. Double Circulant Minimum Storage Regenerating Codes

    CERN Document Server

    Braso, Bernat Gaston

    2010-01-01

    Storage optimization in distributed environments is a major concern when talking about reliability in this kind of schemes. Although replication is the most used option, erasure coding is a more optimized one. However, erasure coding uses a lot of bandwidth to replace one node. In a dynamic scheme, where nodes enter and leave the system frequently, bandwidth use could be an important drawback. Regenerating Codes introduced by \\textit{Dimakis et al.} minimize the code repair problem by applying Network Coding to the distributed storage scheme. However finding the coefficients for the linear combinations used to replace a node is not easy, specially for the systematic case, and must be calculated for each new node fail. For the special case when the dimension $k$ and the redundancy $n-k$ of the system are the same, and the number of nodes participating in the regeneration phase is $d=k+1$, we purpose a new optimal family of Minimum Storage Regenerating codes where coefficients are precalculated and node regener...

  5. Code-Pointer Integrity

    OpenAIRE

    Volodymyr Kuznetsov; Laszlo Szekeres; Mathias Payer; George Candea; Sekar, R.; Dawn Song

    2014-01-01

    Systems code is often written in low-level languages like C/C++, which offer many benefits but also delegate memory management to programmers. This invites memory safety bugs that attackers can exploit to divert control flow and compromise the system. Deployed defense mechanisms (e.g., ASLR, DEP) are incomplete, and stronger defense mechanisms (e.g., CFI) often have high overhead and limited guarantees [19, 15, 9]. We introduce code-pointer integrity (CPI), a new design point that guarantees...

  6. Secure Fractal Image Coding

    OpenAIRE

    Lian, Shiguo

    2007-01-01

    In recent work, various fractal image coding methods are reported, which adopt the self-similarity of images to compress the size of images. However, till now, no solutions for the security of fractal encoded images have been provided. In this paper, a secure fractal image coding scheme is proposed and evaluated, which encrypts some of the fractal parameters during fractal encoding, and thus, produces the encrypted and encoded image. The encrypted image can only be recovered by the correct ke...

  7. Coded Splitting Tree Protocols

    DEFF Research Database (Denmark)

    Sørensen, Jesper Hemming; Stefanovic, Cedomir; Popovski, Petar

    2013-01-01

    This paper presents a novel approach to multiple access control called coded splitting tree protocol. The approach builds on the known tree splitting protocols, code structure and successive interference cancellation (SIC). Several instances of the tree splitting protocol are initiated, each...... as possible. Evaluations show that the proposed protocol provides considerable gains over the standard tree splitting protocol applying SIC. The improvement comes at the expense of an increased feedback and receiver complexity....

  8. Coding of auditory space

    OpenAIRE

    Konishi­, Masakazu

    2003-01-01

    Behavioral, anatomical, and physiological approaches can be integrated in the study of sound localization in barn owls. Space representation in owls provides a useful example for discussion of place and ensemble coding. Selectivity for space is broad and ambiguous in low-order neurons. Parallel pathways for binaural cues and for different frequency bands converge on high-order space-specific neurons, which encode space more precisely. An ensemble of broadly tuned place-coding neurons may conv...

  9. Deductive Glue Code Synthesis for Embedded Software Systems Based on Code Patterns

    Science.gov (United States)

    Liu, Jian; Fu, Jicheng; Zhang, Yansheng; Bastani, Farokh; Yen, I-Ling; Tai, Ann; Chau, Savio N.

    2006-01-01

    Automated code synthesis is a constructive process that can be used to generate programs from specifications. It can, thus, greatly reduce the software development cost and time. The use of formal code synthesis approach for software generation further increases the dependability of the system. Though code synthesis has many potential benefits, the synthesis techniques are still limited. Meanwhile, components are widely used in embedded system development. Applying code synthesis to component based software development (CBSD) process can greatly enhance the capability of code synthesis while reducing the component composition efforts. In this paper, we discuss the issues and techniques for applying deductive code synthesis techniques to CBSD. For deductive synthesis in CBSD, a rule base is the key for inferring appropriate component composition. We use the code patterns to guide the development of rules. Code patterns have been proposed to capture the typical usages of the components. Several general composition operations have been identified to facilitate systematic composition. We present the technique for rule development and automated generation of new patterns from existing code patterns. A case study of using this method in building a real-time control system is also presented.

  10. KENO-V code

    International Nuclear Information System (INIS)

    The KENO-V code is the current release of the Oak Ridge multigroup Monte Carlo criticality code development. The original KENO, with 16 group Hansen-Roach cross sections and P1 scattering, was one ot the first multigroup Monte Carlo codes and it and its successors have always been a much-used research tool for criticality studies. KENO-V is able to accept large neutron cross section libraries (a 218 group set is distributed with the code) and has a general P/sub N/ scattering capability. A supergroup feature allows execution of large problems on small computers, but at the expense of increased calculation time and system input/output operations. This supergroup feature is activated automatically by the code in a manner which utilizes as much computer memory as is available. The primary purpose of KENO-V is to calculate the system k/sub eff/, from small bare critical assemblies to large reflected arrays of differing fissile and moderator elements. In this respect KENO-V neither has nor requires the many options and sophisticated biasing techniques of general Monte Carlo codes

  11. Comparative studies on the effects of a yucca extract and acibenzolar-S-methyl (ASM) on inhibition of Venturia inaequalis in apple leaves

    DEFF Research Database (Denmark)

    Bengtsson, Marianne Vibeke; Wulff, Ednar Gadelha; Jørgensen, Hans Jørgen Lyngs;

    2009-01-01

    . inaequalis in apple leaves showed that the yucca extract primarily acted by inhibiting pre-penetration events and penetration itself. In contrast, the ASM treatment significantly inhibited more stages of the infection process (pre-penetration, penetration and post-penetration events). These observations...

  12. On Coding Non-Contiguous Letter Combinations

    Directory of Open Access Journals (Sweden)

    Frédéric eDandurand

    2011-06-01

    Full Text Available Starting from the hypothesis that printed word identification initially involves the parallel mapping of visual features onto location-specific letter identities, we analyze the type of information that would be involved in optimally mapping this location-specific orthographic code onto a location-invariant lexical code. We assume that some intermediate level of coding exists between individual letters and whole words, and that this involves the representation of letter combinations. We then investigate the nature of this intermediate level of coding given the constraints of optimality. This intermediate level of coding is expected to compress data while retaining as much information as possible about word identity. Information conveyed by letters is a function of how much they constrain word identity and how visible they are. Optimization of this coding is a combination of minimizing resources (using the most compact representations and maximizing information. We show that in a large proportion of cases, non-contiguous letter sequences contain more information than contiguous sequences, while at the same time requiring less precise coding. Moreover, we found that the best predictor of human performance in orthographic priming experiments was within-word ranking of conditional probabilities, rather than average conditional probabilities. We conclude that from an optimality perspective, readers learn to select certain contiguous and non-contiguous letter combinations as information that provides the best cue to word identity.

  13. First-principles study of energetic and electronic properties of A2Ti2O7 (A=Sm, Gd, Er) pyrochlore

    Energy Technology Data Exchange (ETDEWEB)

    Xiao, H. Y.; Zu, Xiaotao T.; Gao, Fei; Weber, William J.

    2008-10-01

    First-principles calculations have been carried out to study the electronic properties of A2Ti2O7 (A=Sm, Gd, Er) pyrochlores. It was found that f electrons have negligible effect on the structural and energetic properties, but have significant effect on the electronic properties. Density of state analysis shows that A-site 4f electrons do take part in the chemical bonding. Also, we found that bond is less covalent than and bonds, while bond in Gd2Ti2O7 is more covalent. It was proposed that for A2Ti2O7 (A = Sm, Gd, Er) pyrochlores, bonds may play more significant role in determining their radiation resistance to amorphization.

  14. A class of binary cyclic codes with five weights

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    In this paper, the dual code of the binary cyclic code of length 2 n-1 with three zeros α, α t 1 and α t 2 is proven to have five nonzero Hamming weights in the case that n 4 is even and t1 = 2 n/2 + 1, t2 = 2 n-1-2 n/2+1 + 1 or 2 n/2 + 3, where α is a primitive element of the finite field F 2 n . The dual code is a divisible code of level n/2+1, and its weight distribution is also completely determined. When n = 4, the dual code satisfies Ward’s bound.

  15. Broncoprovocação com solução salina hipertônica em crianças asmáticas Brocoprovocación con solución salina hipertónica en niños asmáticos Bronchoprovocation with hypertonic saline solution in asthmatic children

    OpenAIRE

    Cínthia Maria X. Costa; Fernanda de Córdoba Lanza; Dirceu Solé

    2012-01-01

    OBJETIVO: Verificar se o teste de broncoprovocação, com solução salina hipertônica a 4,5%, permite detectar o gradiente de resposta em crianças e adolescentes com asma, segundo a gravidade da enfermidade. MÉTODOS: Estudo transversal composto por 75 pacientes asmáticos com idades entre seis e 18 anos. Os pacientes foram classificados pela gravidade (intermitente associada à persistente leve - IL, e persistente moderada associada à grave - MG) e segundo a presença de sensibilização a aeroalérge...

  16. Decoding Algorithms for Random Linear Network Codes

    DEFF Research Database (Denmark)

    Heide, Janus; Pedersen, Morten Videbæk; Fitzek, Frank

    2011-01-01

    achieve a high coding throughput, and reduce energy consumption.We use an on-the-fly version of the Gauss-Jordan algorithm as a baseline, and provide several simple improvements to reduce the number of operations needed to perform decoding. Our tests show that the improvements can reduce the number......We consider the problem of efficient decoding of a random linear code over a finite field. In particular we are interested in the case where the code is random, relatively sparse, and use the binary finite field as an example. The goal is to decode the data using fewer operations to potentially...... of operations used during decoding with 10-20% on average depending on the code parameters....

  17. Safety, codes and standards for hydrogen installations :

    Energy Technology Data Exchange (ETDEWEB)

    Harris, Aaron P.; Dedrick, Daniel E.; LaFleur, Angela Christine; San Marchi, Christopher W.

    2014-04-01

    Automakers and fuel providers have made public commitments to commercialize light duty fuel cell electric vehicles and fueling infrastructure in select US regions beginning in 2014. The development, implementation, and advancement of meaningful codes and standards is critical to enable the effective deployment of clean and efficient fuel cell and hydrogen solutions in the energy technology marketplace. Metrics pertaining to the development and implementation of safety knowledge, codes, and standards are important to communicate progress and inform future R&D investments. This document describes the development and benchmarking of metrics specific to the development of hydrogen specific codes relevant for hydrogen refueling stations. These metrics will be most useful as the hydrogen fuel market transitions from pre-commercial to early-commercial phases. The target regions in California will serve as benchmarking case studies to quantify the success of past investments in research and development supporting safety codes and standards R&D.

  18. The Compare of the Area Replacement Method for Reinforcement Between ASME and GB%ASME与GB等面积法开孔补强的比较

    Institute of Scientific and Technical Information of China (English)

    王诗顺

    2012-01-01

    Opening reinforcement calculation is the basic and important work for boiler and pressure vessel design, area replacement method is the most popular method, in different standard, the basic theory are same, but the actual requirement ate different, at here, based on the area replacement method in ASME Section I Rules for Construction of Power Boilers, ASME Section VIII Div. 1 Rules for Construction of Pressure vessels ,'GB150 - 2011 Pressure vessel, GB/T9222 - 2008 Strength calculation of pressure parts for watertube boilers, author do the detail compare and discussion, make the summarize accordingly.%开孔补强是锅炉和压力容器设计中最基本但又重要的工作,等面积法是开孔补强计算方法中最广泛应用的计算方法,在不同的规范中,虽然等面积法的原理都完全相同,但具体算法和适用范围却各有差异,文中笔者将工作中经常用到的ASME第一卷动力锅炉建造规则,ASME第八卷第一分册压力容器建造规则,GBl50—2011压力容器,GB/T9222—2008水管锅炉受压元件强度计算四部标准中关于等面积法的部分进行了相应的比较和论述,并作了相关总结。

  19. Accumulative Landings System Code Tables

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Code Tables Used In Landings System. These tables assign meanings to the codes that appear in the data tables. Code tables exist for species, gear, state, county,...

  20. Study of some parameters of humoral immunity in asthmatic elderly patients Estudio de algunos parámetros de inmunidad humoral en pacientes asmáticos de la tercera edad

    Directory of Open Access Journals (Sweden)

    Dayamí García Torres

    2008-10-01

    Full Text Available Background: Aging process affects the whole body, including the respiratory and immune systems. Reductions of immunoglobulin secretion, together with environmental factors, increases susceptibility of elderly people to a more severe type of asthma. One of the effective ways of evaluating their immune system is the study of humoral immunity through immunoglobulin quantification. Objective: To analyse the characteristics of immunoglobulin G, A and M quantification in a sample of elderly patients. Methods: Descriptive study of two case series: a group of 60 years-old asthmatic patients and a group of patients younger than 60 years. All of them were received in Cienfuegos Allergy External Consultation, during one year and quantities of immunoglobulin G, A and M were measured. Results: There was higher incidence in female patients and patients between 60 and 79 years. We confirmed irregularities in immunoglobulin G quantification, not in IgA and IgM. Conclusions: Knowledge about humoral immunity in asthmatic elderly patients allows being more careful in their treatment.
    Fundamento: El envejecimiento afecta todos los sistemas; el respiratorio y el inmunológico no escapan a ello. La disminución en la secreción de inmunoglobulinas, sumada a factores del ambiente, hace al anciano susceptible de padecer un asma más severa. Una de las medidas eficaces para evaluar su sistema inmunológico es el estudio de la inmunidad humoral a través de la cuantificación de las inmunoglobulinas. Objetivo: Analizar el comportamiento de la cuantificación de las inmunoglobulinas G, A y M en una muestra de pacientes de la tercera edad. Métodos: Estudio descriptivo de dos serie de casos, un grupo de pacientes asmáticos de 60 años y más y un grupo de menos de 60 años, atendidos en la consulta externa municipal de alergia de la

  1. C++ Coding Standards for the AMP Project

    Energy Technology Data Exchange (ETDEWEB)

    Evans, Thomas M [ORNL; Clarno, Kevin T [ORNL

    2009-09-01

    This document provides an initial starting point to define the C++ coding standards used by the AMP nuclear fuel performance integrated code project and a part of AMP's software development process. This document draws from the experiences, and documentation [1], of the developers of the Marmot Project at Los Alamos National Laboratory. Much of the software in AMP will be written in C++. The power of C++ can be abused easily, resulting in code that is difficult to understand and maintain. This document gives the practices that should be followed on the AMP project for all new code that is written. The intent is not to be onerous but to ensure that the code can be readily understood by the entire code team and serve as a basis for collectively defining a set of coding standards for use in future development efforts. At the end of the AMP development in fiscal year (FY) 2010, all developers will have experience with the benefits, restrictions, and limitations of the standards described and will collectively define a set of standards for future software development. External libraries that AMP uses do not have to meet these requirements, although we encourage external developers to follow these practices. For any code of which AMP takes ownership, the project will decide on any changes on a case-by-case basis. The practices that we are using in the AMP project have been in use in the Denovo project [2] for several years. The practices build on those given in References [3-5]; the practices given in these references should also be followed. Some of the practices given in this document can also be found in [6].

  2. Product Codes for Optical Communication

    DEFF Research Database (Denmark)

    Andersen, Jakob Dahl

    2002-01-01

    Many optical communicaton systems might benefit from forward-error-correction. We present a hard-decision decoding algorithm for the "Block Turbo Codes", suitable for optical communication, which makes this coding-scheme an alternative to Reed-Solomon codes.......Many optical communicaton systems might benefit from forward-error-correction. We present a hard-decision decoding algorithm for the "Block Turbo Codes", suitable for optical communication, which makes this coding-scheme an alternative to Reed-Solomon codes....

  3. Algebraic geometric codes with applications

    Institute of Scientific and Technical Information of China (English)

    CHEN Hao

    2007-01-01

    The theory of linear error-correcting codes from algebraic geomet-ric curves (algebraic geometric (AG) codes or geometric Goppa codes) has been well-developed since the work of Goppa and Tsfasman, Vladut, and Zink in 1981-1982. In this paper we introduce to readers some recent progress in algebraic geometric codes and their applications in quantum error-correcting codes, secure multi-party computation and the construction of good binary codes.

  4. The rvfit Code: A Detailed Adaptive Simulated Annealing Code for Fitting Binaries and Exoplanets Radial Velocities

    CERN Document Server

    Iglesias-Marzoa, Ramón; Morales, María Jesús Arévalo

    2015-01-01

    The fitting of radial velocity curves is a frequent procedure in binary stars and exoplanet research. In the majority of cases the fitting routines need to be fed with a set of initial parameter values and priors from which to begin the computations and their results can be affected by local minima. We present a new code, the rvfit code, for fitting radial velocities of stellar binaries and exoplanets using an Adaptive Simulated Annealing (ASA) global minimization method, which fastly converges to a global solution minimum without the need to provide preliminary parameter values. We show the performance of the code using both synthetic and real data sets: double-lined binaries, single-lined binaries, and exoplanet systems. In all examples the keplerian orbital parameters fitted by the rvfit code and their computed uncertainties are compared with literature solutions. Finally, we provide the source code with a working example and a detailed description on how to use it.

  5. Combining Ratio Estimation for Low Density Parity Check (LDPC) Coding

    Science.gov (United States)

    Mahmoud, Saad; Hi, Jianjun

    2012-01-01

    The Low Density Parity Check (LDPC) Code decoding algorithm make use of a scaled receive signal derived from maximizing the log-likelihood ratio of the received signal. The scaling factor (often called the combining ratio) in an AWGN channel is a ratio between signal amplitude and noise variance. Accurately estimating this ratio has shown as much as 0.6 dB decoding performance gain. This presentation briefly describes three methods for estimating the combining ratio: a Pilot-Guided estimation method, a Blind estimation method, and a Simulation-Based Look-Up table. The Pilot Guided Estimation method has shown that the maximum likelihood estimates of signal amplitude is the mean inner product of the received sequence and the known sequence, the attached synchronization marker (ASM) , and signal variance is the difference of the mean of the squared received sequence and the square of the signal amplitude. This method has the advantage of simplicity at the expense of latency since several frames worth of ASMs. The Blind estimation method s maximum likelihood estimator is the average of the product of the received signal with the hyperbolic tangent of the product combining ratio and the received signal. The root of this equation can be determined by an iterative binary search between 0 and 1 after normalizing the received sequence. This method has the benefit of requiring one frame of data to estimate the combining ratio which is good for faster changing channels compared to the previous method, however it is computationally expensive. The final method uses a look-up table based on prior simulated results to determine signal amplitude and noise variance. In this method the received mean signal strength is controlled to a constant soft decision value. The magnitude of the deviation is averaged over a predetermined number of samples. This value is referenced in a look up table to determine the combining ratio that prior simulation associated with the average magnitude of

  6. Optical coding theory with Prime

    CERN Document Server

    Kwong, Wing C

    2013-01-01

    Although several books cover the coding theory of wireless communications and the hardware technologies and coding techniques of optical CDMA, no book has been specifically dedicated to optical coding theory-until now. Written by renowned authorities in the field, Optical Coding Theory with Prime gathers together in one volume the fundamentals and developments of optical coding theory, with a focus on families of prime codes, supplemented with several families of non-prime codes. The book also explores potential applications to coding-based optical systems and networks. Learn How to Construct

  7. Polynomial weights and code constructions

    DEFF Research Database (Denmark)

    Massey, J; Costello, D; Justesen, Jørn

    1973-01-01

    that are subcodes of the binary Reed-Muller codes and can be very simply instrumented, 3) a new class of constacyclic codes that are subcodes of thep-ary "Reed-Muller codes," 4) two new classes of binary convolutional codes with large "free distance" derived from known binary cyclic codes, 5) two new classes...... of long constraint length binary convolutional codes derived from2^r-ary Reed-Solomon codes, and 6) a new class ofq-ary "repeated-root" constacyclic codes with an algebraic decoding algorithm....

  8. Error coding simulations

    Science.gov (United States)

    Noble, Viveca K.

    1993-01-01

    There are various elements such as radio frequency interference (RFI) which may induce errors in data being transmitted via a satellite communication link. When a transmission is affected by interference or other error-causing elements, the transmitted data becomes indecipherable. It becomes necessary to implement techniques to recover from these disturbances. The objective of this research is to develop software which simulates error control circuits and evaluate the performance of these modules in various bit error rate environments. The results of the evaluation provide the engineer with information which helps determine the optimal error control scheme. The Consultative Committee for Space Data Systems (CCSDS) recommends the use of Reed-Solomon (RS) and convolutional encoders and Viterbi and RS decoders for error correction. The use of forward error correction techniques greatly reduces the received signal to noise needed for a certain desired bit error rate. The use of concatenated coding, e.g. inner convolutional code and outer RS code, provides even greater coding gain. The 16-bit cyclic redundancy check (CRC) code is recommended by CCSDS for error detection.

  9. Physical Layer Network Coding

    CERN Document Server

    Shengli, Zhang; Lam, Patrick P K

    2007-01-01

    A main distinguishing feature of a wireless network compared with a wired network is its broadcast nature, in which the signal transmitted by a node may reach several other nodes, and a node may receive signals from several other nodes simultaneously. Rather than a blessing, this feature is treated more as an interference-inducing nuisance in most wireless networks today (e.g., IEEE 802.11). This paper shows that the concept of network coding can be applied at the physical layer to turn the broadcast property into a capacity-boosting advantage in wireless ad hoc networks. Specifically, we propose a physical-layer network coding (PNC) scheme to coordinate transmissions among nodes. In contrast to straightforward network coding which performs coding arithmetic on digital bit streams after they have been received, PNC makes use of the additive nature of simultaneously arriving electromagnetic (EM) waves for equivalent coding operation. And in doing so, PNC can potentially achieve 100% and 50% throughput increase...

  10. How Many Students are Ready to Write Quality Programs Complying with Coding Standards: A Case Study%多少学生准备好书写符合编码标准的高质量程序:一个案例分析

    Institute of Scientific and Technical Information of China (English)

    王延青; 苏辉东; 王建政; 王宝

    2007-01-01

    The compliance with coding standards is becoming an evaluating index for a software engineer's teamwork capability or international cooperation capability. The best place to solve this problem should be in an educational environment such as college where students begin to write their introductory programs. After constructing a web-based evaluating system, a case was studied in our school of software and some important conclusions were made such as (1) the evaluating results were not so satisfactory because of the absence of necessary training and (2) students' ability to comply with coding standards did not improve automatically with the assignments one by one without timely feedback. In short, there is a long way to run before the students can write quality code meeting the requirement of software industry.

  11. Nested Quantum Error Correction Codes

    CERN Document Server

    Wang, Zhuo; Fan, Hen; Vedral, Vlatko

    2009-01-01

    The theory of quantum error correction was established more than a decade ago as the primary tool for fighting decoherence in quantum information processing. Although great progress has already been made in this field, limited methods are available in constructing new quantum error correction codes from old codes. Here we exhibit a simple and general method to construct new quantum error correction codes by nesting certain quantum codes together. The problem of finding long quantum error correction codes is reduced to that of searching several short length quantum codes with certain properties. Our method works for all length and all distance codes, and is quite efficient to construct optimal or near optimal codes. Two main known methods in constructing new codes from old codes in quantum error-correction theory, the concatenating and pasting, can be understood in the framework of nested quantum error correction codes.

  12. Discriminatory Lossy Source Coding: Side Information Privacy

    OpenAIRE

    Tandon, Ravi; Sankar, Lalitha; Poor, H. Vincent

    2011-01-01

    A lossy source coding problem is studied in which a source encoder communicates with two decoders, one with and one without correlated side information with an additional constraint on the privacy of the side information at the uninformed decoder. Two cases of this problem arise depending on the availability of the side information at the encoder. The set of all feasible rate-distortion-equivocation tuples are characterized for both cases. The difference between the informed and uninformed ca...

  13. Phase-coded pulse aperiodic transmitter coding

    Directory of Open Access Journals (Sweden)

    I. I. Virtanen

    2009-07-01

    Full Text Available Both ionospheric and weather radar communities have already adopted the method of transmitting radar pulses in an aperiodic manner when measuring moderately overspread targets. Among the users of the ionospheric radars, this method is called Aperiodic Transmitter Coding (ATC, whereas the weather radar users have adopted the term Simultaneous Multiple Pulse-Repetition Frequency (SMPRF. When probing the ionosphere at the carrier frequencies of the EISCAT Incoherent Scatter Radar facilities, the range extent of the detectable target is typically of the order of one thousand kilometers – about seven milliseconds – whereas the characteristic correlation time of the scattered signal varies from a few milliseconds in the D-region to only tens of microseconds in the F-region. If one is interested in estimating the scattering autocorrelation function (ACF at time lags shorter than the F-region correlation time, the D-region must be considered as a moderately overspread target, whereas the F-region is a severely overspread one. Given the technical restrictions of the radar hardware, a combination of ATC and phase-coded long pulses is advantageous for this kind of target. We evaluate such an experiment under infinitely low signal-to-noise ratio (SNR conditions using lag profile inversion. In addition, a qualitative evaluation under high-SNR conditions is performed by analysing simulated data. The results show that an acceptable estimation accuracy and a very good lag resolution in the D-region can be achieved with a pulse length long enough for simultaneous E- and F-region measurements with a reasonable lag extent. The new experiment design is tested with the EISCAT Tromsø VHF (224 MHz radar. An example of a full D/E/F-region ACF from the test run is shown at the end of the paper.

  14. Adjoint code generator

    Institute of Scientific and Technical Information of China (English)

    CHENG Qiang; CAO JianWen; WANG Bin; ZHANG HaiBin

    2009-01-01

    The adjoint code generator (ADG) is developed to produce the adjoint codes, which are used to analytically calculate gradients and the Hessian-vector products with the costs independent of the number of the independent variables. Different from other automatic differentiation tools, the implementation of ADG has advantages of using the least program behavior decomposition method and several static dependence analysis techniques. In this paper we first address the concerned concepts and fundamentals, and then introduce the functionality and the features of ADG. In particular, we also discuss the design architecture of ADG and implementation details including the recomputation and storing strategy and several techniques for code optimization. Some experimental results in several applications are presented at the end.

  15. MHD Generation Code

    CERN Document Server

    Frutos-Alfaro, Francisco

    2015-01-01

    A program to generate codes in Fortran and C of the full Magnetohydrodynamic equations is shown. The program used the free computer algebra system software REDUCE. This software has a package called EXCALC, which is an exterior calculus program. The advantage of this program is that it can be modified to include another complex metric or spacetime. The output of this program is modified by means of a LINUX script which creates a new REDUCE program to manipulate the MHD equations to obtain a code that can be used as a seed for a MHD code for numerical applications. As an example, we present part of output of our programs for Cartesian coordinates and how to do the discretization.

  16. TERITORIALITAS PERMUKIMAN TEPI SUNGAI CODE

    Directory of Open Access Journals (Sweden)

    Hastuti Saptorini

    2006-01-01

    Full Text Available Spontaneous settlement of waterfront Code River as unplanned development have demonstrated the spacial behaviour phenomena. The occupants have utilised the expansion lands for domestic, economic, and social activities, both individually and communally. These phenomena have implicated to the numerous senses of territory by signing the area. These spasial responses which contain territorial development meaning have special fenomenal studies which have encouraged architectural meaning. The case study data adopted from author's research group with Arif Budi Solihah, ST in 2004 by the title 'Typology and Morphology Study of Waterfront Housing Caracters; Code River Housing Case Study which funded by High Education General Directorate, National Education Department numbered 199/P4T/DPPM/DM,SKW,SOSAg/ III/2004, have indicated some findings. Authorizing of "independent land" mechanism as research findings show that housing expansion to public space towards the river have utilised in accommodating domestic, social and economic activities. These were signed by some hanging tools and landscape development which are built by two reasons. First, the land status that is encouraging people use riverbank walkway as part of their houses territory. Secondly, the expansion process, both individually and communally, represents the cultural, economic and social demand. Abstract in Bahasa Indonesia : Permukiman spontan di tepi sungai Code merupakan manifestasi perilaku spasial yang diwujudkan melalui ekspansi lahan "kepemilikan" untuk kepentingan kegiatan domestic, ekonomi, dan social, baik yang bersifat individu maupun komunal. Respons perilaku ini telah menggejala melalui "penguasaan" lahan yang bersifat teritoris dalam bentuk pemanfaatan area untuk variasi kegiatan dengan berbagai "penandaan". Sehingga, bentuk pengolahan lahan yang mengandung makna "pembangunan" teritori tersebut merupakan kajian fenomena spasial yang memperkaya referens makna arsitektural. Melalui

  17. A computer code for seismic qualification of nuclear service valves

    International Nuclear Information System (INIS)

    The computer code, CERTIVALVE, has been developed for detailed frequency, seismic stress, and deformation analysis of nuclear service valves. It is an expedient means of analyzing, designing, and qualifying nuclear service valves for dynamic loads. The program is designed to be applicable to virtually all types of ASME Class 1, 2, and 3 valves, including gate, globe, disk, ball, safety-relief, diaphragm, and butterfly valves. It can evaluate valves of nearly all major manufacturers both foreign and domestic. CERTIVALVE computes all natural frequencies of any valve up to 40 Hertz (or higher if the user desires). The program constructs a multi-degree-offreedom (MDOF) finite element model which is used in the eigenvalue (natural frequency) solution. CERTIVALVE also computes the maximum allowable acceleration capacity of any valve on the basis of user-supplied allowable stress limits and the geometric and material properties of the valve components. The worst spatial orientation of the valve is assumed. The maximum allowable resultant is reported in terms of a multiple of weight (that is, in values of g) for each valve component. The valve components evaluated include the non-pressure retaining yoke structure for prismatic, nonprismatic, and curved sections; the yoke-bonnet junction for bolted, clamped and bossed connection details; the bonnet and body sections for various geometric cross sections; and the body-bonnet junction for both bolted-gasket and threaded connections. Finally, the program also performs an operability deformation analysis to check that stem binding is precluded. The evaluation procedures are performed in accordance with included codes and standards. The theoretical development of the program is provided and examples of the program options are presented

  18. Aeroacoustic Prediction Codes

    Science.gov (United States)

    Gliebe, P; Mani, R.; Shin, H.; Mitchell, B.; Ashford, G.; Salamah, S.; Connell, S.; Huff, Dennis (Technical Monitor)

    2000-01-01

    This report describes work performed on Contract NAS3-27720AoI 13 as part of the NASA Advanced Subsonic Transport (AST) Noise Reduction Technology effort. Computer codes were developed to provide quantitative prediction, design, and analysis capability for several aircraft engine noise sources. The objective was to provide improved, physics-based tools for exploration of noise-reduction concepts and understanding of experimental results. Methods and codes focused on fan broadband and 'buzz saw' noise and on low-emissions combustor noise and compliment work done by other contractors under the NASA AST program to develop methods and codes for fan harmonic tone noise and jet noise. The methods and codes developed and reported herein employ a wide range of approaches, from the strictly empirical to the completely computational, with some being semiempirical analytical, and/or analytical/computational. Emphasis was on capturing the essential physics while still considering method or code utility as a practical design and analysis tool for everyday engineering use. Codes and prediction models were developed for: (1) an improved empirical correlation model for fan rotor exit flow mean and turbulence properties, for use in predicting broadband noise generated by rotor exit flow turbulence interaction with downstream stator vanes: (2) fan broadband noise models for rotor and stator/turbulence interaction sources including 3D effects, noncompact-source effects. directivity modeling, and extensions to the rotor supersonic tip-speed regime; (3) fan multiple-pure-tone in-duct sound pressure prediction methodology based on computational fluid dynamics (CFD) analysis; and (4) low-emissions combustor prediction methodology and computer code based on CFD and actuator disk theory. In addition. the relative importance of dipole and quadrupole source mechanisms was studied using direct CFD source computation for a simple cascadeigust interaction problem, and an empirical combustor

  19. Securing mobile code.

    Energy Technology Data Exchange (ETDEWEB)

    Link, Hamilton E.; Schroeppel, Richard Crabtree; Neumann, William Douglas; Campbell, Philip LaRoche; Beaver, Cheryl Lynn; Pierson, Lyndon George; Anderson, William Erik

    2004-10-01

    If software is designed so that the software can issue functions that will move that software from one computing platform to another, then the software is said to be 'mobile'. There are two general areas of security problems associated with mobile code. The 'secure host' problem involves protecting the host from malicious mobile code. The 'secure mobile code' problem, on the other hand, involves protecting the code from malicious hosts. This report focuses on the latter problem. We have found three distinct camps of opinions regarding how to secure mobile code. There are those who believe special distributed hardware is necessary, those who believe special distributed software is necessary, and those who believe neither is necessary. We examine all three camps, with a focus on the third. In the distributed software camp we examine some commonly proposed techniques including Java, D'Agents and Flask. For the specialized hardware camp, we propose a cryptographic technique for 'tamper-proofing' code over a large portion of the software/hardware life cycle by careful modification of current architectures. This method culminates by decrypting/authenticating each instruction within a physically protected CPU, thereby protecting against subversion by malicious code. Our main focus is on the camp that believes that neither specialized software nor hardware is necessary. We concentrate on methods of code obfuscation to render an entire program or a data segment on which a program depends incomprehensible. The hope is to prevent or at least slow down reverse engineering efforts and to prevent goal-oriented attacks on the software and execution. The field of obfuscation is still in a state of development with the central problem being the lack of a basis for evaluating the protection schemes. We give a brief introduction to some of the main ideas in the field, followed by an in depth analysis of a technique called &apos

  20. Principles of speech coding

    CERN Document Server

    Ogunfunmi, Tokunbo

    2010-01-01

    It is becoming increasingly apparent that all forms of communication-including voice-will be transmitted through packet-switched networks based on the Internet Protocol (IP). Therefore, the design of modern devices that rely on speech interfaces, such as cell phones and PDAs, requires a complete and up-to-date understanding of the basics of speech coding. Outlines key signal processing algorithms used to mitigate impairments to speech quality in VoIP networksOffering a detailed yet easily accessible introduction to the field, Principles of Speech Coding provides an in-depth examination of the

  1. On the Capacity of Non-Coherent Network Coding

    CERN Document Server

    Siavoshani, Mahdi Jafari; Fragouli, Christina; Diggavi, Suhas

    2010-01-01

    We consider the problem of multicasting information from a source to a set of receivers over a network where intermediate network nodes perform randomized network coding operations on the source packets. We propose a channel model for the non-coherent network coding introduced by Koetter and Kschischang in [5], that captures the essence of such a network operation, and calculate the capacity as a function of network parameters. We prove that use of subspace coding, is optimal, and show that, in some cases, the capacity-achieving distribution uses subspaces of several dimensions, as opposed to a subspace coding of a given dimension proposed in literature. This model and the results also allow us to give guidelines on when subspace coding is beneficial, in comparison to a coding vector approach, from a capacity viewpoint. We extend our results to the case of multiple source multicast that creates a virtual multiple access channel.

  2. CALMAR: A New Versatile Code Library for Adjustment from Measurements

    Directory of Open Access Journals (Sweden)

    Grégoire G.

    2016-01-01

    Full Text Available CALMAR, a new library for adjustment has been developed. This code performs simultaneous shape and level adjustment of an initial prior spectrum from measured reactions rates of activation foils. It is written in C++ using the ROOT data analysis framework,with all linear algebra classes. STAYSL code has also been reimplemented in this library. Use of the code is very flexible : stand-alone, inside a C++ code, or driven by scripts. Validation and test cases are under progress. Theses cases will be included in the code package that will be available to the community. Future development are discussed. The code should support the new Generalized Nuclear Data (GND format. This new format has many advantages compared to ENDF.

  3. CALMAR: A New Versatile Code Library for Adjustment from Measurements

    Science.gov (United States)

    Grégoire, G.; Fausser, C.; Destouches, C.; Thiollay, N.

    2016-02-01

    CALMAR, a new library for adjustment has been developed. This code performs simultaneous shape and level adjustment of an initial prior spectrum from measured reactions rates of activation foils. It is written in C++ using the ROOT data analysis framework,with all linear algebra classes. STAYSL code has also been reimplemented in this library. Use of the code is very flexible : stand-alone, inside a C++ code, or driven by scripts. Validation and test cases are under progress. Theses cases will be included in the code package that will be available to the community. Future development are discussed. The code should support the new Generalized Nuclear Data (GND) format. This new format has many advantages compared to ENDF.

  4. Conformity of nuclear construction codes with the requirements of the French order dated December 12, 2005 related to nuclear pressure equipment; Conformite des codes de construction nucleaires avec les exigences de l'arrete du 12 decembre 2005 relatif aux equipements sous pression nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Grandemange, J.M.; Renaut, P. [Areva-NP, Tour AREVA, 92084 - Paris La Defense cedex, (France); Paris, D. [EDF-Ceidre 2 rue Ampere - 93206 SAINT-DENIS Cedex (France); Faidy, C. [EDF-Septen 12/14, Avenue Dutrievoz 69628 Villeurbanne Cedex (France)

    2007-07-01

    The French Decree dated December 13, 1999 transposing the Pressure Equipment Directive (PED) has replaced the fundamental texts on which up to now the regulation for pressure equipment important for the safety of nuclear reactors was also founded. By a Ministerial Order - called 'ESPN Order' - dated December 12, 2005, a new regulation has been issued for nuclear pressure equipment. This text makes reference to the Decree transposing the PED while completing these provisions by supplementary requirements having the objective to provide a very high level of integrity guarantee for equipments which are the most important for safety, and to cover the prevention of radioactive release risks. These regulatory evolutions are presented in the Plenary Session of the ESOPE conference. Referencing the Decree and thus the PED, and including specific provisions, the Ministerial Order implies that the Manufacturers update their documents and, if necessary, their prescriptions in the following two domains: - that of the conformity of Codes and Standards used, generally inspired from the ASME Code Section III, with the essential safety requirements of the PED, - that of the respect of the complementary provisions brought by the ESPN Order. This paper presents the more significant conclusions of this work and the resulting amendments of the RCC-M Code, introduced by the 2007 addendum to that Code. The analysis will lead to specify the same type of complementary requirements to Code when a manufacturer wishes to use the German KTA Rules or the ASME Code Section III. (authors) [French] Le decret du 13 decembre 1999 transposant la directive europeenne (DESP) relative aux equipements sous pression a remplace les textes fondamentaux sur lesquels se fondait egalement jusque la la reglementation des appareils a pression importants pour la surete des reacteurs nucleaires. Par arrete - dit 'arrete ESPN' - du 12 decembre 2005, une nouvelle reglementation a ete dictee. Ce

  5. The first twenty years of the ASME Committee on nuclear air and gas treatment - a retrospective by a founding member

    Energy Technology Data Exchange (ETDEWEB)

    Jacox, J. [Jacox Associates, Columbus, OH (United States)

    1997-08-01

    Since the 1996 Winter Meeting of CONAGT was the twentieth anniversary of CONAGT a review of the Committee and its members seems in order. This Paper will cover the background and formation of CONAGT as well as the history to date. This history will include not only the basic accomplishments but some of the less successfully met goals and a look at some of the personalities involved in the Committee work. General future plans will be included. The intent of the Paper is less a formal history than a personal recollection of the Committee and those who worked so hard to create the best possible Codes and Standards for the industry to use. 10 refs.

  6. On the Pseudocodeword Redundancy of Binary Linear Codes

    CERN Document Server

    Zumbrägel, Jens; Flanagan, Mark F

    2011-01-01

    The AWGNC, BSC, and max-fractional pseudocodeword redundancies of a binary linear code are defined to be the smallest number of rows in a parity-check matrix such that the corresponding minimum pseudoweight is equal to the minimum Hamming distance of the code. It is shown that most codes do not have a finite pseudocodeword redundancy. Also, upper bounds on the pseudocodeword redundancy for some families of codes, including codes based on designs, are provided. The pseudocodeword redundancies for all codes of small length (at most 9) are computed. Furthermore, comprehensive results are provided on the cases of cyclic codes of length at most 250 for which the eigenvalue bound of Vontobel and Koetter is sharp.

  7. A method for scientific code coupling in a distributed environment

    International Nuclear Information System (INIS)

    This guide book deals with coupling of big scientific codes. First, the context is introduced: big scientific codes devoted to a specific discipline coming to maturity, and more and more needs in terms of multi discipline studies. Then we describe different kinds of code coupling and an example of code coupling: 3D thermal-hydraulic code THYC and 3D neutronics code COCCINELLE. With this example we identify problems to be solved to realize a coupling. We present the different numerical methods usable for the resolution of coupling terms. This leads to define two kinds of coupling: with the leak coupling, we can use explicit methods, and with the strong coupling we need to use implicit methods. On both cases, we analyze the link with the way of parallelizing code. For translation of data from one code to another, we define the notion of Standard Coupling Interface based on a general structure for data. This general structure constitutes an intermediary between the codes, thus allowing a relative independence of the codes from a specific coupling. The proposed method for the implementation of a coupling leads to a simultaneous run of the different codes, while they exchange data. Two kinds of data communication with message exchange are proposed: direct communication between codes with the use of PVM product (Parallel Virtual Machine) and indirect communication with a coupling tool. This second way, with a general code coupling tool, is based on a coupling method, and we strongly recommended to use it. This method is based on the two following principles: re-usability, that means few modifications on existing codes, and definition of a code usable for coupling, that leads to separate the design of a code usable for coupling from the realization of a specific coupling. This coupling tool available from beginning of 1994 is described in general terms. (authors). figs., tabs

  8. New code match strategy for wideband code division multiple access code tree management

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Orthogonal variable spreading factor channelization codes are widely used to provide variable data rates for supporting different bandwidth requirements in wideband code division multiple access (WCDMA) systems. A new code match scheme for WCDMA code tree management was proposed. The code match scheme is similar to the existing crowed-first scheme. When choosing a code for a user, the code match scheme only compares the one up layer of the allocated codes, unlike the crowed-first scheme which perhaps compares all up layers. So the operation of code match scheme is simple, and the average time delay is decreased by 5.1%. The simulation results also show that the code match strategy can decrease the average code blocking probability by 8.4%.

  9. Information fusion for diagnosis coding support.

    Science.gov (United States)

    Lecornu, L; Le Guillou, C; Le Saux, F; Hubert, M; Puentes, J; Montagner, J; Cauvin, J M

    2011-01-01

    All patient-related medical information during a hospital stay in France, has to be collected and coded in the compilation of medical units discharge documents, according to a standardized approach. The process of describing a patient disease in terms of appropriate diagnostic codes is nevertheless, a non-intuitive operation for the physician. As a consequence, coding errors, inaccuracies and missing data are frequent, leading to potentially severe economical upshots. A coding support system developed to improve medical coding results, integrates three information processing methodologies, using the outputs from various Hospital Information System applications. Each methodology generates partial heterogeneous information, with considerable semantic variety. In order to properly synthesize these outputs, information fusion is required to produce enriched contextualized information, presented to the physician as an ordered list of suggested codes. This paper explores two information fusion approaches: voting system and possibilistic. Both methods are tested on a database of 1,000 discharge summaries, to show the interest of information fusion in this context. Results show that fusion methods perform better in most of the cases than partial information extraction methods. PMID:22255014

  10. Multiterminal Source Coding with an Entropy-Based Distortion Measure

    OpenAIRE

    Courtade, Thomas; Wesel, Richard

    2011-01-01

    In this paper, we consider a class of multiterminal source coding problems, each subject to distortion constraints computed using a specific, entropy-based, distortion measure. We provide the achievable rate distortion region for two cases and, in so doing, we demonstrate a relationship between the lossy multiterminal source coding problems with our specific distortion measure and (1) the canonical Slepian-Wolf lossless distributed source coding network, and (2) the Ahlswede-K\\"{o}rner-Wyner ...

  11. The SEDA computer code and its utilization for Angra 1

    International Nuclear Information System (INIS)

    The implementation of SEDA 2.0 computer code, developed at Ezeiza Atomic Center, Argentine for Angra 1 reactor is described. The SEDA code gives an estimate for radiological consequences of nuclear accidents with release of radiactive materials for the environment. This code is now available for an IBM PC-XT. The computer environment, the files used, data, the programining structure and the models used are presented. The input data and results for two sample case are described. (author)

  12. Coded Random Access

    DEFF Research Database (Denmark)

    Paolini, Enrico; Stefanovic, Cedomir; Liva, Gianluigi;

    2015-01-01

    as waste. However, if the common receiver (e.g., base station) is capable to store the collision slots and use them in a transmission recovery process based on successive interference cancellation, the design space for access protocols is radically expanded. We present the paradigm of coded random access...

  13. Ready, steady… Code!

    CERN Multimedia

    Anaïs Schaeffer

    2013-01-01

    This summer, CERN took part in the Google Summer of Code programme for the third year in succession. Open to students from all over the world, this programme leads to very successful collaborations for open source software projects.   Image: GSoC 2013. Google Summer of Code (GSoC) is a global programme that offers student developers grants to write code for open-source software projects. Since its creation in 2005, the programme has brought together some 6,000 students from over 100 countries worldwide. The students selected by Google are paired with a mentor from one of the participating projects, which can be led by institutes, organisations, companies, etc. This year, CERN PH Department’s SFT (Software Development for Experiments) Group took part in the GSoC programme for the third time, submitting 15 open-source projects. “Once published on the Google Summer for Code website (in April), the projects are open to applications,” says Jakob Blomer, one of the o...

  14. Physical Layer Network Coding

    DEFF Research Database (Denmark)

    Fukui, Hironori; Yomo, Hironori; Popovski, Petar

    2013-01-01

    Physical layer network coding (PLNC) has the potential to improve throughput of multi-hop networks. However, most of the works are focused on the simple, three-node model with two-way relaying, not taking into account the fact that there can be other neighboring nodes that can cause...

  15. New code of conduct

    CERN Multimedia

    Laëtitia Pedroso

    2010-01-01

    During his talk to the staff at the beginning of the year, the Director-General mentioned that a new code of conduct was being drawn up. What exactly is it and what is its purpose? Anne-Sylvie Catherin, Head of the Human Resources (HR) Department, talked to us about the whys and wherefores of the project.   Drawing by Georges Boixader from the cartoon strip “The World of Particles” by Brian Southworth. A code of conduct is a general framework laying down the behaviour expected of all members of an organisation's personnel. “CERN is one of the very few international organisations that don’t yet have one", explains Anne-Sylvie Catherin. “We have been thinking about introducing a code of conduct for a long time but lacked the necessary resources until now”. The call for a code of conduct has come from different sources within the Laboratory. “The Equal Opportunities Advisory Panel (read also the "Equal opportuni...

  16. Improvement of MARS code reflood model

    International Nuclear Information System (INIS)

    A specifically designed heat transfer model for the reflood process which normally occurs at low flow and low pressure was originally incorporated in the MARS code. The model is essentially identical to that of the RELAP5/MOD3.3 code. The model, however, is known to have under-estimated the peak cladding temperature (PCT) with earlier turn-over. In this study, the original MARS code reflood model is improved. Based on the extensive sensitivity studies for both hydraulic and wall heat transfer models, it is found that the dispersed flow film boiling (DFFB) wall heat transfer is the most influential process determining the PCT, whereas the interfacial drag model most affects the quenching time through the liquid carryover phenomenon. The model proposed by Bajorek and Young is incorporated for the DFFB wall heat transfer. Both space grid and droplet enhancement models are incorporated. Inverted annular film boiling (IAFB) is modeled by using the original PSI model of the code. The flow transition between the DFFB and IABF, is modeled using the TRACE code interpolation. A gas velocity threshold is also added to limit the top-down quenching effect. Assessment calculations are performed for the original and modified MARS codes for the Flecht-Seaset test and RBHT test. Improvements are observed in terms of the PCT and quenching time predictions in the Flecht-Seaset assessment. In case of the RBHT assessment, the improvement over the original MARS code is found marginal. A space grid effect, however, is clearly seen from the modified version of the MARS code. (author)

  17. On Asymmetric Quantum MDS Codes

    CERN Document Server

    Ezerman, Martianus Frederic; Ling, San

    2010-01-01

    Assuming the validity of the MDS Conjecture, the weight distribution of all MDS codes is known. Using a recently-established characterization of asymmetric quantum error-correcting codes, linear MDS codes can be used to construct asymmetric quantum MDS codes with $d_{z} \\geq d_{x}\\geq 2$ for all possible values of length $n$ for which linear MDS codes over $\\F_{q}$ are known to exist.

  18. Evaluation Codes from an Affine Veriety Code Perspective

    DEFF Research Database (Denmark)

    Geil, Hans Olav

    2008-01-01

    Evaluation codes (also called order domain codes) are traditionally introduced as generalized one-point geometric Goppa codes. In the present paper we will give a new point of view on evaluation codes by introducing them instead as particular nice examples of affine variety codes. Our study inclu...... includes a reformulation of the usual methods to estimate the minimum distances of evaluation codes into the setting of affine variety codes. Finally we describe the connection to the theory of one-pointgeometric Goppa codes. Contents 4.1 Introduction...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 4.2 Affine variety codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 4.3 Some Gr¨obner basis theoretical tools . . . . . . . . . . . . . . . . . . . . . . . 155 4.4 A bound on the minimum distance of C(I,L) . . . . . . . . . . . . . . . . . . 157 4.5 The Feng-Rao bound...... for C(I,L)? . . . . . . . . . . . . . . . . . . . . . . . . 160 4.6 Using weighted degree orderings . . . . . . . . . . . . . . . . . . . . . . . . . 163 4.7 The order domain conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 4.8 Weight functions and order domains...

  19. Rate-adaptive BCH codes for distributed source coding

    DEFF Research Database (Denmark)

    Salmistraro, Matteo; Larsen, Knud J.; Forchhammer, Søren

    2013-01-01

    This paper considers Bose-Chaudhuri-Hocquenghem (BCH) codes for distributed source coding. A feedback channel is employed to adapt the rate of the code during the decoding process. The focus is on codes with short block lengths for independently coding a binary source X and decoding it given its...... correlated side information Y. The proposed codes have been analyzed in a high-correlation scenario, where the marginal probability of each symbol, Xi in X, given Y is highly skewed (unbalanced). Rate-adaptive BCH codes are presented and applied to distributed source coding. Adaptive and fixed checking...... strategies for improving the reliability of the decoded result are analyzed, and methods for estimating the performance are proposed. In the analysis, noiseless feedback and noiseless communication are assumed. Simulation results show that rate-adaptive BCH codes achieve better performance than low...

  20. Calidad de vida en el niño asmático y su cuidador Quality of life in the asthmatic children and their caregiver

    Directory of Open Access Journals (Sweden)

    ALBERTO VIDAL G

    2007-09-01

    Full Text Available Introducción: Medir la calidad de vida en asma es importante para su tratamiento. Objetivo: El propósito del estudio fue conocer la calidad de vida del niño asmático y su cuidador. Método: Se aplicaron dos cuestionarios de calidad de vida en asma de Juniper. El cuestionario de calidad de vida para pacientes pediátricos con asma (PAQLQ fue respondido por 267 niños asmáticos persistentes de 7 a 15 años de La Unidad de Enfermedades Respiratorias del Hospital Roberto del Río. El cuestionario de calidad de vida para la persona encargada del cuidado del niño con asma (PACQLQ fue respondido por sus respectivos cuidadores. Se consideró como alteración significativa de calidad de vida un promedio menor de 5 puntos. Se analizó el impacto de la severidad y duración del asma en la calidad de vida del niño asmático y su cuidador. Para el análisis estadístico se utilizó Chi cuadrado considerando como significativo un p Introduction: To measure quality of life in asthma is important for its treatment. Objective: The purpose of this study was to know the quality of life of the asthmatic child and his her caregiver. Method: Two questionnaires of quality of life in asthma of Juniper were applied. The pediatric asthma quality of life questionnaire (PAQLQ was responded by 267 persistent asthmatic children, 7 to 15 years old from our Unit of Respiratory Diseases of a public children hospital. The pediatric asthma caregiver quality of life questionnaire (PACQLQ was applied to their respective caregivers. An average of less than 5 points was considered as a significant alteration in quality of life. The impact of the severity and duration of the asthma in the quality of life of the asthmatic children and their caregivers was analyzed. For the statistical analysis the test of Chi square was used and a p < 0.05 was considered significant. Results: A global average of quality of global life less than 5 was found in 39.7% of the asthmatic group and in

  1. Blending Classroom Teaching and Learning with QR Codes

    Science.gov (United States)

    Rikala, Jenni; Kankaanranta, Marja

    2014-01-01

    The aim of this case study was to explore the feasibility of the Quick Response (QR) codes and mobile devices in the context of Finnish basic education. The interest was especially to explore how mobile devices and QR codes can enhance and blend teaching and learning. The data were collected with a teacher interview and pupil surveys. The learning…

  2. Performance Evaluation of HARQ Technique with UMTS Turbo Code

    Directory of Open Access Journals (Sweden)

    S. S. Brkić

    2011-11-01

    Full Text Available The hybrid automatic repeat request technique (HARQ represents the error control principle which combines an error correcting code and automatic repeat request procedure (ARQ, within the same transmission system. In this paper, using Monte Carlo simulation process, the characteristics of HARQ technique are determined, for the case of the Universal Mobile Telecommunication System (UMTS turbo code.

  3. Decoding the Ternary (23, 11, 9 Quadratic Residue Code

    Directory of Open Access Journals (Sweden)

    J. Carmelo Interlando

    2009-01-01

    Full Text Available The algebraic decoding of binary quadratic residue codes can be performed using the Peterson or the Berlekamp-Massey algorithm once certain unknown syndromes are determined or eliminated. The technique of determining unknown syndromes is applied to the nonbinary case to decode the expurgated ternary quadratic residue code of length 23.

  4. ORNL Evaluation of Electrabel Safety Cases for Doel 3 / Tihange 2: Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Bass, Bennett Richard [ORNL; Dickson, Terry L [ORNL; Gorti, Sarma B [ORNL; Klasky, Hilda B [ORNL; Nanstad, Randy K [ORNL; Sokolov, Mikhail A [ORNL; Williams, Paul T [ORNL; Server, W. L. [ATI Consulting, Pinehurst, NC

    2015-11-01

    Oak Ridge National Laboratory (ORNL) performed a detailed technical review of the 2015 Electrabel (EBL) Safety Cases prepared for the Belgium reactor pressure vessels (RPVs) at Doel 3 and Tihange 2 (D3/T2). The Federal Agency for Nuclear Control (FANC) in Belgium commissioned ORNL to provide a thorough assessment of the existing safety margins against cracking of the RPVs due to the presence of almost laminar flaws found in each RPV. Initial efforts focused on surveying relevant literature that provided necessary background knowledge on the issues related to the quasilaminar flaws observed in D3/T2 reactors. Next, ORNL proceeded to develop an independent quantitative assessment of the entire flaw population in the two Belgian reactors according to the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section XI, Appendix G, Fracture Toughness Criteria for Protection Against Failure, New York (1992 and 2004). That screening assessment of all EBL-characterized flaws in D3/T2 used ORNL tools, methodologies, and the ASME Code Case N-848, Alternative Characterization Rules for QuasiLaminar Flaws . Results and conclusions from the ORNL flaw acceptance assessments of D3/T2 were compared with those from the 2015 EBL Safety Cases. Specific findings of the ORNL evaluation of that part of the EBL structural integrity assessment focusing on stability of the flaw population subjected to primary design transients include the following: ORNL s analysis results were similar to those of EBL in that very few characterized flaws were found not compliant with the ASME (1992) acceptance criterion. ORNL s application of the more recent ASME Section XI (2004) produced only four noncompliant flaws, all due to LOCAs. The finding of a greater number of non-compliant flaws in the EBL screening assessment is due principally to a significantly more restrictive (conservative) criterion for flaw size acceptance used by EBL. ORNL s screening assessment results

  5. ORNL Evaluation of Electrabel Safety Cases for Doel 3 / Tihange 2: Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Bass, Bennett Richard [ORNL; Dickson, Terry L [ORNL; Gorti, Sarma B [ORNL; Klasky, Hilda B [ORNL; Nanstad, Randy K [ORNL; Sokolov, Mikhail A [ORNL; Williams, Paul T [ORNL; Server, W. L. [ATI Consulting, Pinehurst, NC

    2015-11-01

    Oak Ridge National Laboratory (ORNL) performed a detailed technical review of the 2015 Electrabel (EBL) Safety Cases prepared for the Belgium reactor pressure vessels (RPVs) at Doel 3 and Tihange 2 (D3/T2). The Federal Agency for Nuclear Control (FANC) in Belgium commissioned ORNL to provide a thorough assessment of the existing safety margins against cracking of the RPVs due to the presence of almost laminar flaws found in each RPV. Initial efforts focused on surveying relevant literature that provided necessary background knowledge on the issues related to the quasilaminar flaws observed in D3/T2 reactors. Next, ORNL proceeded to develop an independent quantitative assessment of the entire flaw population in the two Belgian reactors according to the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section XI, Appendix G, Fracture Toughness Criteria for Protection Against Failure, New York (1992 and 2004). That screening assessment of all EBL-characterized flaws in D3/T2 used ORNL tools, methodologies, and the ASME Code Case N-848, Alternative Characterization Rules for QuasiLaminar Flaws . Results and conclusions from the ORNL flaw acceptance assessments of D3/T2 were compared with those from the 2015 EBL Safety Cases. Specific findings of the ORNL evaluation of that part of the EBL structural integrity assessment focusing on stability of the flaw population subjected to primary design transients include the following: ORNL s analysis results were similar to those of EBL in that very few characterized flaws were found not compliant with the ASME (1992) acceptance criterion. ORNL s application of the more recent ASME Section XI (2004) produced only four noncompliant flaws, all due to LOCAs. The finding of a greater number of non-compliant flaws in the EBL screening assessment is due principally to a significantly more restrictive (conservative) criterion for flaw size acceptance used by EBL. ORNL s screening assessment results

  6. Towards Bounded Infeasible Code Detection

    CERN Document Server

    Christ, Jürgen; Schäf, Martin

    2012-01-01

    A first step towards more reliable software is to execute each statement and each control-flow path in a method once. In this paper, we present a formal method to automatically compute test cases for this purpose based on the idea of a bounded infeasible code detection. The method first unwinds all loops in a program finitely often and then encodes all feasible executions of the loop-free programs in a logical formula. Helper variables are introduced such that a theorem prover can reconstruct the control-flow path of a feasible execution from a satisfying valuation of this formula. Based on this formula, we present one algorithm that computes a feasible path cover and one algorithm that computes a feasible statement cover. We show that the algorithms are complete for loop-free programs and that they can be implemented efficiently. We further provide a sound algorithm to compute procedure summaries which makes the method scalable to larger programs.

  7. Estudio prospectivo sobre el impacto de un servicio de atención farmacéutica comunitaria en personas asmáticas

    Directory of Open Access Journals (Sweden)

    Andrés Jácome Julio

    2003-01-01

    Full Text Available Fundamento: En la actualidad, en los países desarrollados se encuentran disponibles una gran cantidad de medicamentos antiasmáticos para el abordaje terapéutico de la enfermedad en sus diferentes niveles de gravedad. Sin embargo, existen grandes dificultades en la utilización adecuada de los dispositivos de inhalación, y con frecuencia se presentan problemas relacionados con la medicación que ocasionan un mal control de la enfermedad. El objetivo del estudio es comprobar si el servicio de atención farmacéutica comunitaria mejora los resultados en salud obtenidos con la farmacoterapia en pacientes asmáticos. Métodos: Es un estudio de intervención comunitaria, con diseño cuasiexperimental multicéntrico controlado, con medición de las variables respuesta antes y después de un período de observación de 9 meses. Contó con 96 pacientes en el grupo de intervención y 69 en el grupo control, captados en 37 farmacias. Como instrumentos de medida se utilizaron los cuestionarios de calidad de vida específicos AQLQ (adultos y PAQLQ (pediátrico de Juniper, y entrevistas de inicio y cierre con una escala de 10 signos de mal control del asma y datos sobre utilización de recursos sanitarios. Resultados: En las medidas de calidad de vida en el grupo intervención, se produjo un aumento medio de 0,82 puntos en adultos, y 0,81 puntos en niños, ambos clínicamente significativos por superar los umbrales clínicos establecidos (0,5 y 0,42 respectivamente. También se obtuvo una diferencia estadísticamente significativa en la comparación final entre los 2 grupos de estudio. Los signos de mal control del asma disminuyeron significativamente en el grupo intervención desde una media inicial de 2,72 hasta 1,15. También se encontró una diferencia significativa en la comparación final entre los grupos de estudio. Conclusiones: El servicio de atención farmacéutica comunitaria tuvo un efecto beneficioso sobre la calidad de vida relacionada con

  8. User Effect on Code Application and Qualification Needs

    International Nuclear Information System (INIS)

    Experience with some code assessment case studies and also additional ISPs have shown the dominant effect of the code user on the predicted system behavior. The general findings of the user effect investigations on some of the case studies indicate, specifically, that in addition to user effects, there are other reasons which affect the results of the calculations and are hidden under the general title of user effects. The specific characteristics of experimental facilities, i.e. limitations as far as code assessment is concerned; limitations of the used thermal-hydraulic codes to simulate certain system behavior or phenomena; limitations due to interpretation of experimental data by the code user, i.e. interpretation of experimental data base. On the basis of the discussions in this paper, the following conclusions and recommendations can be made: More dialogue appears to be necessary with the experimenters in the planning of code assessment calculations, e.g. ISPs.; User guidelines are not complete for the codes and the lack of sufficient and detailed user guidelines are observed with some of the case studies; More extensive user instruction and training, improved user guidelines, or quality assurance procedures may partially reduce some of the subjective user influence on the calculated results; The discrepancies between experimental data and code predictions are due both to the intrinsic code limit and to the so called user effects. There is a worthful need to quantify the percentage of disagreement due to the poor utilization of the code and due to the code itself. This need especially arises for the uncertainty evaluation studies (e.g. [18]) which do not take into account the mentioned user effects; A much focused investigation, based on the results of comparison calculations e.g. ISPs, analyzing the experimental data and the results of the specific code in order to evaluate the user effects and the related experimental aspects should be integral part of the

  9. Decoding Generalized Concatenated Codes Using Interleaved Reed-Solomon Codes

    CERN Document Server

    Senger, Christian; Bossert, Martin; Zyablov, Victor

    2008-01-01

    Generalized Concatenated codes are a code construction consisting of a number of outer codes whose code symbols are protected by an inner code. As outer codes, we assume the most frequently used Reed-Solomon codes; as inner code, we assume some linear block code which can be decoded up to half its minimum distance. Decoding up to half the minimum distance of Generalized Concatenated codes is classically achieved by the Blokh-Zyablov-Dumer algorithm, which iteratively decodes by first using the inner decoder to get an estimate of the outer code words and then using an outer error/erasure decoder with a varying number of erasures determined by a set of pre-calculated thresholds. In this paper, a modified version of the Blokh-Zyablov-Dumer algorithm is proposed, which exploits the fact that a number of outer Reed-Solomon codes with average minimum distance d can be grouped into one single Interleaved Reed-Solomon code which can be decoded beyond d/2. This allows to skip a number of decoding iterations on the one...

  10. CTI Correction Code

    Science.gov (United States)

    Massey, Richard; Stoughton, Chris; Leauthaud, Alexie; Rhodes, Jason; Koekemoer, Anton; Ellis, Richard; Shaghoulian, Edgar

    2013-07-01

    Charge Transfer Inefficiency (CTI) due to radiation damage above the Earth's atmosphere creates spurious trailing in images from Charge-Coupled Device (CCD) imaging detectors. Radiation damage also creates unrelated warm pixels, which can be used to measure CTI. This code provides pixel-based correction for CTI and has proven effective in Hubble Space Telescope Advanced Camera for Surveys raw images, successfully reducing the CTI trails by a factor of ~30 everywhere in the CCD and at all flux levels. The core is written in java for speed, and a front-end user interface is provided in IDL. The code operates on raw data by returning individual electrons to pixels from which they were unintentionally dragged during readout. Correction takes about 25 minutes per ACS exposure, but is trivially parallelisable to multiple processors.

  11. The NIMROD Code

    Science.gov (United States)

    Schnack, D. D.; Glasser, A. H.

    1996-11-01

    NIMROD is a new code system that is being developed for the analysis of modern fusion experiments. It is being designed from the beginning to make the maximum use of massively parallel computer architectures and computer graphics. The NIMROD physics kernel solves the three-dimensional, time-dependent two-fluid equations with neo-classical effects in toroidal geometry of arbitrary poloidal cross section. The NIMROD system also includes a pre-processor, a grid generator, and a post processor. User interaction with NIMROD is facilitated by a modern graphical user interface (GUI). The NIMROD project is using Quality Function Deployment (QFD) team management techniques to minimize re-engineering and reduce code development time. This paper gives an overview of the NIMROD project. Operation of the GUI is demonstrated, and the first results from the physics kernel are given.

  12. Sinusoidal transform coding

    Science.gov (United States)

    Mcaulay, Robert J.; Quatieri, Thomas F.

    1988-01-01

    It has been shown that an analysis/synthesis system based on a sinusoidal representation of speech leads to synthetic speech that is essentially perceptually indistinguishable from the original. Strategies for coding the amplitudes, frequencies and phases of the sine waves have been developed that have led to a multirate coder operating at rates from 2400 to 9600 bps. The encoded speech is highly intelligible at all rates with a uniformly improving quality as the data rate is increased. A real-time fixed-point implementation has been developed using two ADSP2100 DSP chips. The methods used for coding and quantizing the sine-wave parameters for operation at the various frame rates are described.

  13. Epetra developers coding guidelines.

    Energy Technology Data Exchange (ETDEWEB)

    Heroux, Michael Allen; Sexton, Paul Michael

    2003-12-01

    Epetra is a package of classes for the construction and use of serial and distributed parallel linear algebra objects. It is one of the base packages in Trilinos. This document describes guidelines for Epetra coding style. The issues discussed here go beyond correct C++ syntax to address issues that make code more readable and self-consistent. The guidelines presented here are intended to aid current and future development of Epetra specifically. They reflect design decisions that were made in the early development stages of Epetra. Some of the guidelines are contrary to more commonly used conventions, but we choose to continue these practices for the purposes of self-consistency. These guidelines are intended to be complimentary to policies established in the Trilinos Developers Guide.

  14. Confocal coded aperture imaging

    Energy Technology Data Exchange (ETDEWEB)

    Tobin, Jr., Kenneth William (Harriman, TN); Thomas, Jr., Clarence E. (Knoxville, TN)

    2001-01-01

    A method for imaging a target volume comprises the steps of: radiating a small bandwidth of energy toward the target volume; focusing the small bandwidth of energy into a beam; moving the target volume through a plurality of positions within the focused beam; collecting a beam of energy scattered from the target volume with a non-diffractive confocal coded aperture; generating a shadow image of said aperture from every point source of radiation in the target volume; and, reconstructing the shadow image into a 3-dimensional image of the every point source by mathematically correlating the shadow image with a digital or analog version of the coded aperture. The method can comprise the step of collecting the beam of energy scattered from the target volume with a Fresnel zone plate.

  15. Code of Practice

    International Nuclear Information System (INIS)

    This Code of Practice introduces accepted safety procedures associated with the use of alpha, beta, gamma and X-radiation in secondary schools (pupils aged 12 to 18) in Ireland, and summarises good practice and procedures as they apply to radiation protection. Typical dose rates at various distances from sealed sources are quoted, and simplified equations are used to demonstrate dose and shielding calculations. The regulatory aspects of radiation protection are outlined, and references to statutory documents are given

  16. Generalized Toric Codes Coupled to Thermal Baths

    CERN Document Server

    Viyuela, O; Martin-Delgado, M A

    2011-01-01

    We have studied the dynamics of a generalized toric code based on qudits at finite temperature by finding the master equation coupling the code's degrees of freedom to a thermal bath. As a consequence, we find that for qutrits new types of anyons and thermal processes appear that are forbidden for qubits. These include creation, annihilation and diffusion throughout the system code. It is possible to solve the master equation in a short-time regime and find expressions for the decay rates as a function of the dimension $d$ of the qudits. Although we provide an explicit proof that the system relax to the Gibbs state for arbitrary qudits, we also prove that above a certain crossing temperature, qutrits initial decay rate is smaller than the original case for qubits. Surprisingly this behavior only happens with qutrits and not with other qudits with $d>3$.

  17. Code Formal Verification of Operation System

    Directory of Open Access Journals (Sweden)

    Yu Zhang

    2010-12-01

    Full Text Available with the increasing pressure on non-function attributes (security, safety and reliability requirements of an operation system, high–confidence operation system is becoming more important. Formal verification is the only known way to guarantee that a system is free of programming errors. We research on formal verification of operation system kernel in system code level and take theorem proving and model checking as the main technical methods to resolve the key techniques of verifying operation system kernel in C code level. We present a case study to the verification of real-world C systems code derived from an implementation of μC/OS – II in the end.

  18. MELCOR computer code manuals

    International Nuclear Information System (INIS)

    MELCOR is a fully integrated, engineering-level computer code that models the progression of severe accidents in light water reactor nuclear power plants. MELCOR is being developed at Sandia National Laboratories for the U.S. Nuclear Regulatory Commission as a second-generation plant risk assessment tool and the successor to the Source Term Code Package. A broad spectrum of severe accident phenomena in both boiling and pressurized water reactors is treated in MELCOR in a unified framework. These include: thermal-hydraulic response in the reactor coolant system, reactor cavity, containment, and confinement buildings; core heatup, degradation, and relocation; core-concrete attack; hydrogen production, transport, and combustion; fission product release and transport; and the impact of engineered safety features on thermal-hydraulic and radionuclide behavior. Current uses of MELCOR include estimation of severe accident source terms and their sensitivities and uncertainties in a variety of applications. This publication of the MELCOR computer code manuals corresponds to MELCOR 1.8.3, released to users in August, 1994. Volume 1 contains a primer that describes MELCOR's phenomenological scope, organization (by package), and documentation. The remainder of Volume 1 contains the MELCOR Users Guides, which provide the input instructions and guidelines for each package. Volume 2 contains the MELCOR Reference Manuals, which describe the phenomenological models that have been implemented in each package

  19. MELCOR computer code manuals

    Energy Technology Data Exchange (ETDEWEB)

    Summers, R.M.; Cole, R.K. Jr.; Smith, R.C.; Stuart, D.S.; Thompson, S.L. [Sandia National Labs., Albuquerque, NM (United States); Hodge, S.A.; Hyman, C.R.; Sanders, R.L. [Oak Ridge National Lab., TN (United States)

    1995-03-01

    MELCOR is a fully integrated, engineering-level computer code that models the progression of severe accidents in light water reactor nuclear power plants. MELCOR is being developed at Sandia National Laboratories for the U.S. Nuclear Regulatory Commission as a second-generation plant risk assessment tool and the successor to the Source Term Code Package. A broad spectrum of severe accident phenomena in both boiling and pressurized water reactors is treated in MELCOR in a unified framework. These include: thermal-hydraulic response in the reactor coolant system, reactor cavity, containment, and confinement buildings; core heatup, degradation, and relocation; core-concrete attack; hydrogen production, transport, and combustion; fission product release and transport; and the impact of engineered safety features on thermal-hydraulic and radionuclide behavior. Current uses of MELCOR include estimation of severe accident source terms and their sensitivities and uncertainties in a variety of applications. This publication of the MELCOR computer code manuals corresponds to MELCOR 1.8.3, released to users in August, 1994. Volume 1 contains a primer that describes MELCOR`s phenomenological scope, organization (by package), and documentation. The remainder of Volume 1 contains the MELCOR Users Guides, which provide the input instructions and guidelines for each package. Volume 2 contains the MELCOR Reference Manuals, which describe the phenomenological models that have been implemented in each package.

  20. Structural coding versus free-energy predictive coding.

    Science.gov (United States)

    van der Helm, Peter A

    2016-06-01

    Focusing on visual perceptual organization, this article contrasts the free-energy (FE) version of predictive coding (a recent Bayesian approach) to structural coding (a long-standing representational approach). Both use free-energy minimization as metaphor for processing in the brain, but their formal elaborations of this metaphor are fundamentally different. FE predictive coding formalizes it by minimization of prediction errors, whereas structural coding formalizes it by minimization of the descriptive complexity of predictions. Here, both sides are evaluated. A conclusion regarding competence is that FE predictive coding uses a powerful modeling technique, but that structural coding has more explanatory power. A conclusion regarding performance is that FE predictive coding-though more detailed in its account of neurophysiological data-provides a less compelling cognitive architecture than that of structural coding, which, for instance, supplies formal support for the computationally powerful role it attributes to neuronal synchronization. PMID:26407895

  1. Transmission code optimization method for incoherent scatter radar

    Directory of Open Access Journals (Sweden)

    J. Vierinen

    2008-09-01

    Full Text Available When statistical inversion of a lag profile is used to determine an incoherent scatter target, the posterior variance of the estimated target can be used to determine how well a set of transmission codes perform. In this work we present an incoherent scatter radar transmission code optimization search method suitable for different modulation types, including binary phase, polyphase and amplitude modulation. We found that the combination of amplitude and phase modulation provides better performance than traditional binary phase coding, in some cases giving better accuracy than alternating codes.

  2. Transmission code optimization method for incoherent scatter radar

    CERN Document Server

    Vierinen, Juha; Orispaa, Mikko; Virtanen, Ilkka I

    2008-01-01

    When statistical inversion of a lag profile is used to determine an incoherent scatter target, the posterior variance of the estimated target can be used to determine how well a certain set of transmission codes perform. In this work we present an incoherent scatter radar transmission code optimization search method suitable for different modulation types, including binary phase, polyphase and amplitude modulation. We find that the combination of amplitude and phase modulation provides better performance than traditional binary phase coding, in some cases giving better accuracy than alternating codes.

  3. MORSE Monte Carlo radiation transport code system

    International Nuclear Information System (INIS)

    For a number of years the MORSE user community has requested additional help in setting up problems using various options. The sample problems distributed with MORSE did not fully demonstrate the capability of the code. At Oak Ridge National Laboratory the code originators had a complete set of sample problems, but funds for documenting and distributing them were never available. Recently the number of requests for listings of input data and results for running some particular option the user was trying to implement has increased to the point where it is not feasible to handle them on an individual basis. Consequently it was decided to package a set of sample problems which illustrates more adequately how to run MORSE. This write-up may be added to Part III of the MORSE report. These sample problems include a combined neutron-gamma case, a neutron only case, a gamma only case, an adjoint case, a fission case, a time-dependent fission case, the collision density case, an XCHEKR run and a PICTUR run

  4. Performance Analysis of a Decoding Algorithm for Algebraic Geometry Codes

    DEFF Research Database (Denmark)

    Jensen, Helge Elbrønd; Nielsen, Rasmus Refslund; Høholdt, Tom

    1998-01-01

    We analyse the known decoding algorithms for algebraic geometry codes in the case where the number of errors is greater than or equal to [(dFR-1)/2]+1, where dFR is the Feng-Rao distance......We analyse the known decoding algorithms for algebraic geometry codes in the case where the number of errors is greater than or equal to [(dFR-1)/2]+1, where dFR is the Feng-Rao distance...

  5. Recent results in the decoding of Algebraic geometry codes

    DEFF Research Database (Denmark)

    Høholdt, Tom; Jensen, Helge Elbrønd; Nielsen, Rasmus Refslund

    1998-01-01

    We analyse the known decoding algorithms for algebraic geometry codes in the case where the number of errors is [(dFR-1)/2]+1, where dFR is the Feng-Rao distance......We analyse the known decoding algorithms for algebraic geometry codes in the case where the number of errors is [(dFR-1)/2]+1, where dFR is the Feng-Rao distance...

  6. Information sets as permutation cycles for quadratic residue codes

    Directory of Open Access Journals (Sweden)

    Richard A. Jenson

    1982-01-01

    Full Text Available The two cases p=7 and p=23 are the only known cases where the automorphism group of the [p+1,   (p+1/2] extended binary quadratic residue code, O(p, properly contains PSL(2,p. These codes have some of their information sets represented as permutation cycles from Aut(Q(p. Analysis proves that all information sets of Q(7 are so represented but those of Q(23 are not.

  7. Coding Opportunity Densification Strategies for Instantly Decodable Network Coding

    OpenAIRE

    Sorour, Sameh; Valaee, Shahrokh

    2012-01-01

    In this paper, we aim to identify the strategies that can maximize and monotonically increase the density of the coding opportunities in instantly decodable network coding (IDNC).Using the well-known graph representation of IDNC, first derive an expression for the exact evolution of the edge set size after the transmission of any arbitrary coded packet. From the derived expressions, we show that sending commonly wanted packets for all the receivers can maximize the number of coding opportunit...

  8. TASS code topical report. V.1 TASS code technical manual

    International Nuclear Information System (INIS)

    TASS 1.0 code has been developed at KAERI for the initial and reload non-LOCA safety analysis for the operating PWRs as well as the PWRs under construction in Korea. TASS code will replace various vendor's non-LOCA safety analysis codes currently used for the Westinghouse and ABB-CE type PWRs in Korea. This can be achieved through TASS code input modifications specific to each reactor type. The TASS code can be run interactively through the keyboard operation. A simimodular configuration used in developing the TASS code enables the user easily implement new models. TASS code has been programmed using FORTRAN77 which makes it easy to install and port for different computer environments. The TASS code can be utilized for the steady state simulation as well as the non-LOCA transient simulations such as power excursions, reactor coolant pump trips, load rejections, loss of feedwater, steam line breaks, steam generator tube ruptures, rod withdrawal and drop, and anticipated transients without scram (ATWS). The malfunctions of the control systems, components, operator actions and the transients caused by the malfunctions can be easily simulated using the TASS code. This technical report describes the TASS 1.0 code models including reactor thermal hydraulic, reactor core and control models. This TASS code models including reactor thermal hydraulic, reactor core and control models. This TASS code technical manual has been prepared as a part of the TASS code manual which includes TASS code user's manual and TASS code validation report, and will be submitted to the regulatory body as a TASS code topical report for a licensing non-LOCA safety analysis for the Westinghouse and ABB-CE type PWRs operating and under construction in Korea. (author). 42 refs., 29 tabs., 32 figs

  9. Containment Code Validation Matrix

    International Nuclear Information System (INIS)

    The Committee on the Safety of Nuclear Installations (CSNI) formed the CCVM (Containment Code Validation Matrix) task group in 2002. The objective of this group was to define a basic set of available experiments for code validation, covering the range of containment (ex-vessel) phenomena expected in the course of light and heavy water reactor design basis accidents and beyond design basis accidents/severe accidents. It was to consider phenomena relevant to pressurised heavy water reactor (PHWR), pressurised water reactor (PWR) and boiling water reactor (BWR) designs of Western origin as well as of Eastern European VVER types. This work would complement the two existing CSNI validation matrices for thermal hydraulic code validation (NEA/CSNI/R(1993)14) and In-vessel core degradation (NEA/CSNI/R(2001)21). The report initially provides a brief overview of the main features of a PWR, BWR, CANDU and VVER reactors. It also provides an overview of the ex-vessel corium retention (core catcher). It then provides a general overview of the accident progression for light water and heavy water reactors. The main focus is to capture most of the phenomena and safety systems employed in these reactor types and to highlight the differences. This CCVM contains a description of 127 phenomena, broken down into 6 categories: - Containment Thermal-hydraulics Phenomena; - Hydrogen Behaviour (Combustion, Mitigation and Generation) Phenomena; - Aerosol and Fission Product Behaviour Phenomena; - Iodine Chemistry Phenomena; - Core Melt Distribution and Behaviour in Containment Phenomena; - Systems Phenomena. A synopsis is provided for each phenomenon, including a description, references for further information, significance for DBA and SA/BDBA and a list of experiments that may be used for code validation. The report identified 213 experiments, broken down into the same six categories (as done for the phenomena). An experiment synopsis is provided for each test. Along with a test description

  10. Efeito do EGB761 (Extrato de Ginkgo biloba sobre a qualidade de vida em pacientes asmáticos moderados submetidos a tratamento de manutenção

    Directory of Open Access Journals (Sweden)

    M. D. Hillebrand

    2004-01-01

    Full Text Available A busca de tratamentos alternativos e eficazes para o controle da asma brônquica é fator importante na melhora da qualidade de vida dos portadores da doença. O efeito do extrato de Ginkgo biloba (Ginkgo biloba L., na resposta asmática ao tratamento de manutenção para asma brônquica moderada persistente, foi estudado em um ensaio clínico randomizado, cego, placebo controlado.

  11. Combinatorial neural codes from a mathematical coding theory perspective.

    Science.gov (United States)

    Curto, Carina; Itskov, Vladimir; Morrison, Katherine; Roth, Zachary; Walker, Judy L

    2013-07-01

    Shannon's seminal 1948 work gave rise to two distinct areas of research: information theory and mathematical coding theory. While information theory has had a strong influence on theoretical neuroscience, ideas from mathematical coding theory have received considerably less attention. Here we take a new look at combinatorial neural codes from a mathematical coding theory perspective, examining the error correction capabilities of familiar receptive field codes (RF codes). We find, perhaps surprisingly, that the high levels of redundancy present in these codes do not support accurate error correction, although the error-correcting performance of receptive field codes catches up to that of random comparison codes when a small tolerance to error is introduced. However, receptive field codes are good at reflecting distances between represented stimuli, while the random comparison codes are not. We suggest that a compromise in error-correcting capability may be a necessary price to pay for a neural code whose structure serves not only error correction, but must also reflect relationships between stimuli. PMID:23724797

  12. 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.

  13. Criticality benchmarking of ANET Monte Carlo code

    International Nuclear Information System (INIS)

    In this work the new Monte Carlo code ANET is tested on criticality calculations. ANET is developed based on the high energy physics code GEANT of CERN and aims at progressively satisfying several requirements regarding both simulations of GEN II/III reactors, as well as of innovative nuclear reactor designs such as the Accelerator Driven Systems (ADSs). Here ANET is applied on three different nuclear configurations, including a subcritical assembly, a Material Testing Reactor and the conceptual configuration of an ADS. In the first case, calculation of the effective multiplication factor (keff) are performed for the Training Nuclear Reactor of the Aristotle University of Thessaloniki, while in the second case keff is computed for the fresh fueled core of the Portuguese research reactor (RPJ) just after its conversion to Low Enriched Uranium, considering the control rods at the position that renders the reactor critical. In both cases ANET computations are compared with corresponding results obtained by three different well established codes, including both deterministic (XSDRNPM/CITATION) and Monte Carlo (TRIPOLI, MCNP). In the RPI case, keff computations are also compared with observations during the reactor core commissioning since the control rods are considered at criticality position. The above verification studies show ANET to produce reasonable results since they are satisfactorily compared with other models as well as with observations. For the third case (ADS), preliminary ANET computations of keff for various intensities of the proton beam are presented, showing also a reasonable code performance concerning both the order of magnitude and the relative variation of the computed parameter. (author)

  14. Evolución clínica de pacientes asmáticos tratados con inmunoterapia. Municipio Majibacoa, 2008-2013

    Directory of Open Access Journals (Sweden)

    Mailin Molina Leyva

    2015-11-01

    Full Text Available Se realizó un estudio cuasi-experimental de corte longitudinal en 50 pacientes asmáticos con edades  entre 5 y 54 años, atendidos en el Servicio de Alergología del municipio Majibacoa de la provincia de Las Tunas; con el objetivo de determinar la evolución clínica con inmunoterapia, en el período de enero 2008 a febrero de 2013. A los pacientes se les administró inmunoterapia específica de ácaros con extractos estandarizados, durante tres años o más de forma subcutánea. El asma bronquial predominó en el sexo femenino y en las edades comprendidas entre 5 y 14 años. Los antecedentes de atopia familiar fueron referidos por el mayor por ciento de los pacientes analizados. Según severidad de la enfermedad, antes del tratamiento prevalecieron los pacientes en la categoría persistente moderada. Se observó mejoría de los síntomas del asma en una elevada proporción de casos.

  15. Periodic X-ray Modulation and its Possible Relation with Eccentricity in Black Hole Binaries : Long-Term Swift/BAT and RXTE/ASM Data Analysis

    Science.gov (United States)

    Ghosh, Arindam; Chakrabarti, Sandip Kumar

    2016-07-01

    X-ray binary orbits are expected to have some eccentricity, albeit small. Stellar companion of a black hole orbiting in an eccentric orbit will experience modulating tidal force with a periodicity same as that of the orbital period which will result in a modulation of accretion rates, seed photon flux, and flux of inverse Comptonized harder X-rays as well. Timing analysis of long-term X-ray data (1.5-12 keV) of RXTE/ASM and all sky survey data (15-50 keV) of Swift/BAT satellites reveal this periodicity in several black hole candidates. If this modulation is assumed to be solely due to tidal effects (without taking other effects, such as eclipses, reflection from winds, super-hump phenomena etc. into account), the RMS-value of the peak in power density spectrum allows us to estimate eccentricities of these orbits. We present these very interesting results. We show that our results generally agree with independent studies of these parameters.

  16. NEW BINARY USER CODES FOR DS CDMA COMMUNICATION

    Directory of Open Access Journals (Sweden)

    NEELAM SRIVASTAVA

    2011-12-01

    spread spectrum CDMA communications. As a result, these can be used in both cases along with the advantage of their large availability and flexible code sizes.

  17. Differential modulation based on space-time block codes

    Institute of Scientific and Technical Information of China (English)

    李正权; 胡光锐

    2004-01-01

    A differential modulation scheme using space-time block codes is put forward. Compared with other schemes,our scheme has lower computational complexity and has a simpler decoder. In the case of three or four transmitter antennas, our scheme has a higher rate a higher coding gain and a lower bit error rate for a given rate. Then we made simulations for space-time block codes as well as group codes in the case of two, three, four and five transmit antennas. The simulations prove that using two transmit antennas, one receive antenna and code rate of 4 bits/s/Hz, the differential STBC method outperform the differential group codes method by 4 dB. Useing three, four and five transmit antennas,one receive antenna, and code rate of 3 bits/s/Hz are adopted, the differential STBC method outperform the differential group codes method by 5 dB, 6.5 dB and 7 dB, respectively. In other words, the differential modulation scheme based on space-time block code is better than the corresponding differential modulation scheme

  18. The systemic family assessment system: its validity with asthmatic children and their families Evaluación familiar sistémica: su validez con niños asmáticos y sus familias Avaliação familiar sistêmica: sua validade com crianças asmáticas e suas famílias

    Directory of Open Access Journals (Sweden)

    Dóris Lieth Peçanha

    2007-12-01

    Full Text Available The construct and concurrent validity of the Systemic Family Assessment (SFA system was tested. Participants were 11 asthmatic and 14 healthy Brazilian children (aged 5 to 9 along with their intact families. Measures included the SFA, the Family Colored Drawing Test with children (FCDT, and a semi-structured interview with parents (PI. Comparisons between families of asthmatic and healthy children yielded significant differences for all family dimensions of the SFA. The most affected dimensions for families of asthmatic children were the individuation process within the family, family conflicts, family integration and cohesion, roles, and quality of leadership within the family. Significative correlation between the SFA and the two independent measures were found. Results support the construct and concurrent validity of the SFA.La validez de constructo y la validad coexistente do protocolo de Evaluación Familiar Sistémica (EFS fue establecida. El estudio fue realizado en Brasil con familias intactas, y observó 11 niños con asma y 14 saludables, con edades de 5 a 9 años. Las medidas analizadas incluyeron el EFS, el Test del Dibujo Coloreado de la Familia aplicado a los niños (TDCF, y una entrevista semi-estructurada aplicada a los padres (EP. Las comparaciones entre las familias de niños asmáticos y saludables apuntaron diferencias significativas en todas las dimensiones familiares de la EFS. En las familias de niños asmáticos las dimensiones más afectadas fueron el proceso de la individuación dentro de la familia, los conflictos familiares, la integración familiar y la cohesión, los papeles y la calidad de liderazgo dentro de la familia. Se encontró una correlación significativa entre el EFS y las dos medidas independientes. Los resultados prueban la validez del constructo y la validad coexistente del EFS.Foi testada a validade de construto e a validade concorrente do protocolo de Avaliação Familiar Sistêmica (AFS. Os

  19. IS THE CODE OF CONDUCT A MERE MARKETING TOOL OR A NECESSARY INSTRUMENT FOR A GLOBAL COMPANY LIKE VAISALA : A Case Study of a Finnish Public Limited Company Vaisala, specializing in environmental and industrial measurement

    OpenAIRE

    Raninen, Elina

    2014-01-01

    This research studies the implementation of the company code of conduct of a Finnish Public Company called Vaisala. Vaisala is a global company operating in more than 140 countries and focuses on environmental measurements such as weather measurement and chosen industrial measurements.

  20. A Comparison of the Variability of the Symbiotic X-ray Binaries GX 1+4, 4U 1954+31, and 4U 1700+24 from Swift/BAT and RXTE/ASM Observations

    Science.gov (United States)

    Corbet, R. H. D.; Sokoloski, J. L.; Mukai, K.; Markwardt, C. B.; Tueller, J.

    2007-01-01

    We present an analysis of the X-ray variability of three symbiotic X-ray binaries, GX 1+4, 4U 1700+24, and 4U 1954+31, using observations made with the Swift Burst Alert Telescope (BAT) and the Rossi X-ray Timing Explorer (RXTE) All-Sky Monitor (ASM). Observations of 4U 1954+31 with the Swift BAT show modulation at a period near 5 hours. Models to explain this modulation are discussed including the presence of an exceptionally slow X-ray pulsar in the system and accretion instabilities. We conclude that the most likely interpretation is that 4U 1954+31 contains one of the slowest known X-ray pulsars. Unlike 4U 1954+31, neither GX 1+4 nor 4U 1700+24 show any evidence for modulation on a timescale of hours. An analysis of the RXTE ASM light curves of GX l+4, 4U 1700+24, and 4U 1954+31 does not show the presence of periodic modulation in any source, although there is considerable variability on long timescales for all three sources. There is no modulation in GX 1+4 on either the optical 1161 day orbital period or a previously reported 304 day X-ray period. For 4U 1700+24 we do not confirm the 404 day period previously proposed for this source from a shorter duration ASM light curve.