WorldWideScience

Sample records for agroforestal systems applied

  1. AGROFOREST SYSTEM INVESTMENT ANALYSIS UNDER RISK

    Directory of Open Access Journals (Sweden)

    Luiz Moreira Coelho Junior

    2008-12-01

    Full Text Available Agroforestry System is the ecological and economical interaction of the use of the land, with the combination ofagriculture, livestock and forest production, in temporary sequence and in a simultaneous way. The studies of investments in projectsassume the existence of risks and uncertainties. An alternative to reduce the risk in the forest investment is the association with theagricultural. This work analyzed the situations of risk of a system agroflorestal. Monte Carlo s method comes from the theory ofsimulations and stands out as a powerful and useful tool to provide a distribution of probabilities for the analysis of decision. A totalof 10,000 interactions of the Net Present Value (VPL, of Internal Rate of Return (TIR and of the Equivalent Periodic Benefit (BPEwere made in order to establish the probability distribution. The results presented 78.65% of chance of VPL being US$ 1,410.00;77.56% of chance of TIR being 36.36%, and; 75.39% of chance of BPE being US$ 309.70; the agroforestry system presented lowinvestment risk; and the livestock is the main product of the agrossilvopastoril system, followed by charcoal.

  2. Concept of ecological corridors and agroforestal systems applied for the implementation of PETROBRAS punctual and linear projects: case study of COMPERJ (Rio de Janeiro Petrochemical Complex); Conceito de corredores ecologicos e sistemas agroflorestais aplicados a implantacao de empreendimentos pontuais e lineares em ambito PETROBRAS: estudo de caso do COMPERJ (Complexo Petroquimico do Rio de Janeiro)

    Energy Technology Data Exchange (ETDEWEB)

    Secron, Marcelo B.; Mesquita, Ivan D.; Soares, Luiz Felipe R.; Almeida, Ronaldo Bento G. de; Fernandes, Renato; Dellamea, Giovani S. [PETROBRAS, Rio de Janeiro, RJ (Brazil); Nunes, Rodrigo T.; Pereira Junior, Edson Rodrigues [SEEBLA, Servicos de Engenharia Emilio Baumgart Ltda., Rio de Janeiro, RJ (Brazil)

    2008-07-01

    The land use and human occupation realized with an indiscriminate form across many parts of the world, including Brazil, have been causing destruction of great amount of forest mass and green areas. These actions results an isolation of a forest reminder fragment, and in such case, along the time, these fragments become weak and debilitated, characterizing general biodiversity loss or its extinction, in a worse case. This study presents basic concepts of ecological corridors and agroforestal systems, showing the case study that will be implemented in COMPERJ (Rio de Janeiro Petrochemical Complex), pointing the aspects that can be applied for PETROBRAS to offset impacts (biodiversity offsets concept) of punctual and linear projects. (author)

  3. EMERGY SYNTHESIS OF AN AGRO-FOREST RESTORATION SYSTEM IN LOWER SUBTROPICAL CHINA

    Science.gov (United States)

    The low subtropical zone is the most populated and seriously degraded area in China; therefore, highly efficient restoration of degraded lands is the key to sustainable development of this region. An agro-forest restoration mode consisting of an Acacia mangium forest, a Citrus re...

  4. Biodiversity of small mammals in cacao agroforests in Peruvian Amazon

    OpenAIRE

    Paterová, Linda

    2013-01-01

    A large proportion of the deforestation of tropical rain forests is caused by small-scale farmers. Traditional slash-and-burn systems with prolonged fallow periods are no longer feasible in most parts of the tropics. However, agroforests could have great potential to increase the productivity of farming systems and sustain continuous crop production. Cacao (Theobroma cacao) agroforests that maintains a high proportion of shade trees in a diverse structure is being viewed as a sustainable land...

  5. Floristic composition and management of cropland agroforest in southwestern Bangladesh

    Institute of Scientific and Technical Information of China (English)

    Md. Hasanuzzaman; Mahmood Hossain; Mustafa Saroar

    2014-01-01

    Cropland agroforest is an important production system in the southwest region of Bangladesh. This study focused on the floristic composition and management of existing cropland agroforests. A total of 313 cropland agroforests were surveyed and 83%respondents practiced pure agroforestry while the remaining 17% practiced agroforestry with fisheries. A total of 18 forest trees and 2 shrubs were recorded from 11 families and 59 species of agricultural crops were from 28 families. A higher proportion (79%) of cropland agroforests were occupied small land areas (0.12-0.80 ha). About 63% of respondents planted trees for fruit production and 47%for timber production, and 35%of respondents engaged in commercial production (35%). Swietenia macrophylla was the most prevalent species (relative prevalence 20.83) followed by Man-gifera indica (relative prevalence 15.57) and Cocos nucifera (relative prevalence 7.08). Shorter spacing was used for timber and fuel wood species and wider spacing for fruit trees. A wide range of rotation periods, from 5 to 25 years, was observed for both cases. The use of chemical fertilizer was highest followed by cow dung and compost in cropland agroforests. Overall management practices of cropland agroforest in southwest Bangladesh were determined by the end product and local demand.

  6. Complex Adaptive Systems, soil degradation and land sensitivity to desertification: A multivariate assessment of Italian agro-forest landscape.

    Science.gov (United States)

    Salvati, Luca; Mavrakis, Anastasios; Colantoni, Andrea; Mancino, Giuseppe; Ferrara, Agostino

    2015-07-15

    Degradation of soils and sensitivity of land to desertification are intensified in last decades in the Mediterranean region producing heterogeneous spatial patterns determined by the interplay of factors such as climate, land-use changes, and human pressure. The present study hypothesizes that rising levels of soil degradation and land sensitivity to desertification are reflected into increasingly complex (and non-linear) relationships between environmental and socioeconomic variables. To verify this hypothesis, the Complex Adaptive Systems (CAS) framework was used to explore the spatiotemporal dynamics of eleven indicators derived from a standard assessment of soil degradation and land sensitivity to desertification in Italy. Indicators were made available on a detailed spatial scale (773 agricultural districts) for various years (1960, 1990, 2000 and 2010) and analyzed through a multi-dimensional exploratory data analysis. Our results indicate that the number of significant pair-wise correlations observed between indicators increased with the level of soil and land degradation, although with marked differences between northern and southern Italy. 'Fast' and 'slow' factors underlying soil and land degradation, and 'rapidly-evolving' or 'locked' agricultural districts were identified according to the rapidity of change estimated for each of the indicators studied. In southern Italy, 'rapidly-evolving' districts show a high level of soil degradation and land sensitivity to desertification during the whole period of investigation. On the contrary, those districts in northern Italy are those experiencing a moderate soil degradation and land sensitivity to desertification with the highest increase in the level of sensitivity over time. The study framework contributes to the assessment of complex local systems' dynamics in affluent but divided countries. Results may inform thematic strategies for the mitigation of land and soil degradation in the framework of action

  7. Avaliação da fertilidade dos solos de sistemas agroflorestais com cafeeiro (Coffea arabica L. em Lavras-MG Evaluation of soil fertility in agroforest systems with coffee trees (Coffea arabica L. in Lavras-MG

    Directory of Open Access Journals (Sweden)

    Bruno Grandi Salgado

    2006-06-01

    Full Text Available Com o objetivo de avaliar a fertilidade dos solos em um sistema agroflorestal composto por cafeeiros (Coffea arábica L. - Mundo Novo, ingazeiros (Inga vera Willd e grevíleas (Grevilea robusta A. Cunn, situado em Lavras, Minas Gerais, foi instalado o presente experimento. Usou-se um delineamento experimental inteiramente casualizado com três tratamentos e sete repetições. Os tratamentos foram: a cafeeiros a pleno sol, b cafeeiros consorciados com ingazeiros e c cafeeiros consociados com grevílea. Os espaçamentos dos cafeeiros nos três sistemas foi 4 x 1 m, para o ingazeiro 8 m x 15 m e para a grevílea 12 m x 10 m. Aos 15 anos de idade do cafeeiro e do ingazeiro e aos 9 anos da grevílea foram avaliadas as seguintes características dos solos, pH, acidez potencial (H+Al, alumínio trocável (Al+3, bases trocáveis (Ca+2 e Mg+2, potássio disponível (K+, fósforo disponível(P, enxofre (S, CTC efetiva (T, soma de bases (SB, saturação de bases (V e matéria orgânica (MO. Os resultados foram submetidos à analise de variância e as médias, comparadas pelo teste de Scott-Knott. Após a análise dos dados, concluiu-se que, embora tenha havido diferenças entre alguns elementos estudados, as características químicas dos solos nos três sistemas não foram severamente afetadas.The objective of this wark was to evaluat e the soil fertility in an agroforest system using coffee trees (Coffea arabica L - Mundo Novo, inga trees (Inga vera Wild and grevillea trees (Grevillea robusta A Cunn situated in Lavras, Minas Geris. A completely randomized experimental design with tree treatments and seven replicates was utilized. The treatments were : a coffee trees in full sunshine; b coffee trees mixed with inga trees and c coffee trees mixed with grevillea trees. Tree spacings in the three systems were 4 x 1m for coffee, 8 m x 15 m for inga and 12 x 10 m for grevillea. With coffee and inga trees at 15 years of age and grevillea trees at 9 years of age

  8. Applied Control Systems Design

    CERN Document Server

    Mahmoud, Magdi S

    2012-01-01

    Applied Control System Design examines several methods for building up systems models based on real experimental data from typical industrial processes and incorporating system identification techniques. The text takes a comparative approach to the models derived in this way judging their suitability for use in different systems and under different operational circumstances. A broad spectrum of control methods including various forms of filtering, feedback and feedforward control is applied to the models and the guidelines derived from the closed-loop responses are then composed into a concrete self-tested recipe to serve as a check-list for industrial engineers or control designers. System identification and control design are given equal weight in model derivation and testing to reflect their equality of importance in the proper design and optimization of high-performance control systems. Readers’ assimilation of the material discussed is assisted by the provision of problems and examples. Most of these e...

  9. Valorization of agroforest crops for biomass utilization. Editorial Note

    OpenAIRE

    Río Andrade, José Carlos del

    2010-01-01

    Editorial Note. Special issue on "Valorization of Agroforest Crops for Biomass Utilization", The Open Agriculture Journal. José C. del Río (Guest Editor) Department of Plant Biotechnology Institute of Natural Resources and Agrobiology of Seville (IRNAS-CSIC) Seville, Spain E-mail:

  10. Socioeconomic importance of the banana tree (Musa spp.) in the Guinean Highland Savannah agroforests.

    Science.gov (United States)

    Mapongmetsem, Pierre Marie; Nkongmeneck, Bernard Aloys; Gubbuk, Hamide

    2012-01-01

    Home gardens are defined as less complex agroforests which look like and function as natural forest ecosystems but are integrated into agricultural management systems located around houses. Investigations were carried out in 187 households. The aim of the study was to identify the different types of banana home gardens existing in the periurban zone of Ngaoundere town. The results showed that the majority of home gardens in the area were very young (less than 15 years old) and very small in size (less than 1 ha). Eleven types of home gardens were found in the periurban area of Ngaoundere town. The different home garden types showed important variations in all their structural characteristics. Two local species of banana are cultivated in the systems, Musa sinensis and Musa paradisiaca. The total banana production is 3.57 tons per year. The total quantity of banana consumed in the periurban zone was 3.54 tons (93.5%) whereas 1.01 tons were sold in local or urban markets. The main banana producers belonged to home gardens 2, 4, 7, and 9. The quantity of banana offered to relatives was more than what the farmers received from others. Farmers, rely on agroforests because the flow of their products helps them consolidate friendship and conserve biodiversity at the same time. PMID:22629136

  11. Mycorrhizae on dipterocarps in rubber agroforests (RAF) in Sumatra

    OpenAIRE

    Tata, M.H.L.

    2008-01-01

    In tropical lowland forests, which dominated by trees of Dipterocarpaceae family, trees and fungi are strongly linked, through ectomycorrhiza (EcM) formation. However, as part of rapid deforestation and forest transformation, mixed dipterocarp forests have been replaced by other vegetation and land use types. Considerable areas of the lowland tropical forest in Sumatra have been turned into Rubber Agroforests (RAF). RAF is a land use type in which rubber trees are planted, while allowing spon...

  12. Combining high biodiversity with high yields in tropical agroforests

    OpenAIRE

    Clough, Y.; Barkmann, J.; Juhrbandt, J.; Kessler, M; Wanger, T.C.; Anshary, A.; Buchori, D; Cicuzza, D.; Darras, K; Putra, D D; Erasmi, S.; Pitopang, R; Schmidt, C; Schulze, C. H.; Seidel, D

    2011-01-01

    Local and landscape-scale agricultural intensification is a major driver of global biodiversity loss. Controversially discussed solutions include wildlife-friendly farming or combining high-intensity farming with land-sparing for nature. Here, we integrate biodiversity and crop productivity data for smallholder cacao in Indonesia to exemplify for tropical agroforests that there is little relationship between yield and biodiversity under current management, opening substantial opportunities fo...

  13. A Fifty-Year Sustainability Assessment of Italian Agro-Forest Districts

    Directory of Open Access Journals (Sweden)

    Fabio Recanatesi

    2015-12-01

    Full Text Available As cropland management and land use shifted towards more intensive practices, global land degradation increased drastically. Understanding relationships between ecological and socioeconomic drivers of soil and landscape degradation within these landscapes in economically dynamic contexts such as the Mediterranean region, requires multi-target and multi-scalar approaches covering long-term periods. This study provides an original approach for identifying desertification risk drivers and sustainable land management strategies within Italian agro-forest districts. An Environmental Sensitivity Area (ESA approach, based on four thematic indicators (climate, soil, vegetation and land-use and a composite index of desertification risk (ESAI, was used to evaluate changes in soil vulnerability and landscape degradation between the years 1960 and 2010. A multivariate model was developed to identify the most relevant drivers causing changes in land susceptibility at the district scale. Larger districts, and those with a higher proportion of their total surface area classified as agro-forest, had a significantly lower increase in land susceptibility to degradation during the 50 years when compared with the remaining districts. We conclude that preserving economic viability and ecological connectivity of traditional, extensive agricultural systems is a key measure to mitigate the desertification risk in the Mediterranean region.

  14. Social Role-Play Games Vs Individual Perceptions of Conservation and PES Agreements for Maintaining Rubber Agroforests in Jambi (Sumatra, Indonesia

    Directory of Open Access Journals (Sweden)

    Meine van Noordwijk

    2011-09-01

    Full Text Available Financial incentives can both support and undermine social norms compatible with environmental service enhancement. External co-investment—e.g., through incentives from programs to reduce emissions from deforestation and degradation (REDD and eco-certification—needs to synergize with local efforts by understanding local dynamics and conditions for free and prior informed consent. We assessed the perceptions and behavior of rubber agroforest farmers under existing conservation agreements as a step toward institutionalized reward schemes for agro-biodiversity using questionnaires and role-playing games (RPG. To our knowledge, this is the first attempt to apply such a combination of methods to explore the perceptions of payments for environmental services (PES. Results revealed a strong conservation belief system and social norms in the research site, with indications that individual interest in converting old rubber agroforest to oil palm, with consequent private gain and loss of local social agro-biodiversity benefits, is suppressed in the social context of a role-playing game. In the game, all financial bids by external agents to secure an oil palm foothold in the village, were rejected despite indications of declining income in the village. Agents promoting an eco-certification scheme in the RPG had success and the responses obtained in the game can assist in the actual rollout of such a scheme without creating unrealistic expectations of its financial benefits. Co-investment schemes that require higher levels of trust and clarity of performance measures will have to address the potential discrepancy between individual preferences and community-level planning and decisions, while recognizing that social norms color the responses of individuals when presented with alternatives.

  15. Applied systems theory

    CERN Document Server

    Dekkers, Rob

    2014-01-01

    Offering an up-to-date account of systems theories and its applications, this book provides a different way of resolving problems and addressing challenges in a swift and practical way, without losing overview and not having a grip on the details. From this perspective, it offers a different way of thinking in order to incorporate different perspectives and to consider multiple aspects of any given problem. Drawing examples from a wide range of disciplines, it also presents worked cases to illustrate the principles. The multidisciplinary perspective and the formal approach to modelling of syst

  16. Farmers' perspectives about agroforests conversion to plantations in Sumatra. Lessons learnt from Bungo district (Jambi, Indonesia)

    OpenAIRE

    Therville, C.; Feintrenie, L.; Levang, Patrice

    2011-01-01

    Located on the fringe of the last tropical rainforests of Sumatra, rubber agroforests are known to conserve the main ecological functions of the primary forest, including a large part of its biodiversity. Nowadays these smallholder plantations are under threat. The regular rise of natural rubber and crude palm oil prices has been a major incentive for farmers to convert their agroforests into clonal rubber and oil-palm plantations. However, some areas seem to resist conversion. A multidiscipl...

  17. Increased Market Integration, Value, and Ecological Knowledge of Tea Agroforests in the Akha Highlands of Southwest China

    Directory of Open Access Journals (Sweden)

    Robban A. J. Toleno

    2010-12-01

    Full Text Available This study assesses the persistence and change of traditional land use patterns and ecological knowledge in response to expanded commercialization of tea (Camellia sinensis var. assamica (L. Kuntze Theaceae in an indigenous Akha (Hani community in the midlevel montane forests of southwest Yunnan, China. Surveys were conducted in 2005 and 2008, over a period corresponding to a regional tea market boom and bust cycle, to compare the valuation smallholders attribute to land use types and to determine the role that value systems play in shaping environmental behavior and knowledge. At the community level, increased market integration of tea agroforests is associated with reconfiguration of land use, intensified management, reorganization of labor structures, and generation of knowledge on tea resources. Akha have tapped into customary resources and forged new social networks with tea industry agents to take advantage of emerging market opportunities. They have resisted state reforms calling for the cultivation of high-intensity plantations and introduced cultivars. Consequently, they have benefited from price premiums through niche market networks for tea sourced from agroforests and proprietary landraces not available to other communities disempowered by market cycles. Subsistence agriculture, home gardening, and foraging persist for food security despite tea wealth. However, as traditional values are reoriented toward market-based ideologies, the community may risk a breakdown of the social institutions that support sustainability.

  18. Applied computation and security systems

    CERN Document Server

    Saeed, Khalid; Choudhury, Sankhayan; Chaki, Nabendu

    2015-01-01

    This book contains the extended version of the works that have been presented and discussed in the First International Doctoral Symposium on Applied Computation and Security Systems (ACSS 2014) held during April 18-20, 2014 in Kolkata, India. The symposium has been jointly organized by the AGH University of Science & Technology, Cracow, Poland and University of Calcutta, India. The Volume I of this double-volume book contains fourteen high quality book chapters in three different parts. Part 1 is on Pattern Recognition and it presents four chapters. Part 2 is on Imaging and Healthcare Applications contains four more book chapters. The Part 3 of this volume is on Wireless Sensor Networking and it includes as many as six chapters. Volume II of the book has three Parts presenting a total of eleven chapters in it. Part 4 consists of five excellent chapters on Software Engineering ranging from cloud service design to transactional memory. Part 5 in Volume II is on Cryptography with two book...

  19. ANÁLISIS DE LA ESTRUCTURA ARBÓREA DEL SISTEMA AGROFORESTAL DE CACAO (Theobroma cacao L. EN EL SOCONUSCO, CHIAPAS - MÉXICO Analysis of the Structure Arborea Agroforestry System Cocoa (Theobroma cacao L. in Soconusco, Chiapas - Mexico

    Directory of Open Access Journals (Sweden)

    HUGO A ROA-ROMERO

    Full Text Available Se determinó la abundancia, riqueza, importancia, equidad y diversidad de los árboles encontrados en sistemas agroforestales de cacao, del Soconusco, Chiapas, México. La presente investigación, se desarrolló en la región costera del Soconusco, ubicada al sur del estado de Chiapas; se muestrearon los municipios de Huehuetán, Tapachula y Tuxtla Chico, por ser los más representativos en área sembrada de cacao. En cada municipio, se establecieron al azar siete parcelas temporales de 50 x 50 m cada una, lo que suma en total 5,25 hectáreas , en las cuales se registraron variables como el diámetro a la altura del pecho (DAP: 1,3 m sobre el nivel del suelo, área basal, y sombrío en el cacaotal. Se encontraron 46 especies agrupadas en 21 familias, las especies con el mayor valor de importancia fueron Mangifera indica y Pouteria sapota, convirtiéndose en las especies de sombra más frecuentemente encontradas. La composición florística denotó una mayor similitud en los municipios de Tapachula y Huehuetán, como lo muestra el mayor porcentaje del índice de Jaccard y en lo que respecta a diversidad, el municipio de Tuxtla Chico presentó el mayor valor según el índice de Shannon. Este estudio determina la existencia de una cobertura definitiva de preferencia asociada a los árboles frutales.The abundance, wealth, size, fairness and diversity of trees found in cacao agroforestry systems was determined in Soconusco , Chiapas , Mexico . This research was conducted in the coastal region of Soconusco, located in the southern state of Chiapas . The municipalities of Huehuetán Tapachula and Tuxtla Chico were sampled, as the most representative in area planted with cocoa. In each municipality, were created at random seven parcels temporary 50 x 50 m each, which amount totalling 5.25 hectares , in which there were variables such as the diameter at breast height (DBH: 1.3 m above the soil, basal area, and grim in the cacaotal. We found 46 species

  20. Applied systems analysis. No. 22

    International Nuclear Information System (INIS)

    Based on a detailed analysis of demands in the area Cologne/Frankfurt, the amount of the system products for this region were ascertained, which under consideration of technical conditions and entrepreneurial aspects seemed to be disposable at cost equality with competative energy supplies. Based on these data, the technical components of the system, location and piping were fixed and first- and operating costs were determined. For a judgement of the economics, the key numbers, cash value, internal rate of interest and cost recovery rate were determined from the difference of costs between the nuclear long distance energy system and alternative facilities. Furthermore specific production cost, associated prices and contribution margin were presented for each product. (orig.)

  1. Active system monitoring applied on wind turbines

    DEFF Research Database (Denmark)

    Niemann, Hans Henrik; Poulsen, Niels Kjølstad; Parbo, Henrik;

    2009-01-01

    A concept for active system monitoring (ASM) applied on wind turbines is presented in this paper. The concept is based on an injection of a small periodic auxiliary signal in the system. An investigation of the signature from the auxiliary input in residual (error) signals can then be applied for...

  2. Applied Systems Analysis: A Genetic Approach

    OpenAIRE

    Majone, G.

    1980-01-01

    The International Institute for Applied Systems Analysis is preparing a "Handbook of Systems Analysis," which will appear in three volumes: Volume 1, "Overview," is aimed at a widely varied audience of producers and users of systems analysis; Volume 2, "Methods," is aimed at systems analysts who need basic knowledge of methods in which they are not expert; the volume contains introductory overviews of such methods; Volume 3, "Cases," contains descriptions of actual systems analyses that illus...

  3. The quality management system applied at PRPN

    International Nuclear Information System (INIS)

    The ISO 9001-2000 is an International standard for quality management systems. The application of this quality management system is for guaranteeing that the organizations products will fulfill requirements set by its customers. Here the steps taken to apply the quality management system at PRPN are expounded in five main parts, namely quality management system, responsibilities of the management, resources, product realization, measurement, analysis and repair. (author)

  4. Thermodynamic Laws Applied to Economic Systems

    Science.gov (United States)

    González, José Villacís

    2009-01-01

    Economic activity in its different manifestations--production, exchange, consumption and, particularly, information on quantities and prices--generates and transfers energy. As a result, we can apply to it the basic laws of thermodynamics. These laws are applicable within a system, i.e., in a country or between systems and countries. To these…

  5. System Applies Polymer Powder To Filament Tow

    Science.gov (United States)

    Baucom, Robert M.; Snoha, John J.; Marchello, Joseph M.

    1993-01-01

    Polymer powder applied uniformly and in continuous manner. Powder-coating system applies dry polymer powder to continuous fiber tow. Unique filament-spreading technique, combined with precise control of tension on fibers in system, ensures uniform application of polymer powder to web of spread filaments. Fiber tows impregnated with dry polymer powders ("towpregs") produced for preform-weaving and composite-material-molding applications. System and process valuable to prepreg industry, for production of flexible filament-windable tows and high-temperature polymer prepregs.

  6. Applied mathematics analysis of the multibody systems

    Science.gov (United States)

    Sahin, H.; Kar, A. K.; Tacgin, E.

    2012-08-01

    A methodology is developed for the analysis of the multibody systems that is applied on the vehicle as a case study. The previous study emphasizes the derivation of the multibody dynamics equations of motion for bogie [2]. In this work, we have developed a guide-way for the analysis of the dynamical behavior of the multibody systems for mainly validation, verification of the realistic mathematical model and partly for the design of the alternative optimum vehicle parameters.

  7. Applied Energy Systems - Rudimentary Fluid Mechanics

    OpenAIRE

    McGovern, Jim

    2014-01-01

    This is a compact textbook for a module addressing rudimentary fluid mechanics within the context of applied energy systems. It is at an introductory level for engineers or technologists. The book does not attempt to cover the principles of fluid mechanics comprehensively. Rather, it provides a practical but theoretically sound foundation, linked to two key areas: hydrostatic power transmission systems and the flow of fluids through pipes and fittings. This selection allows the two areas to b...

  8. Mycorrhizal Interactions for Reforestation: Constraints to Dryland Agroforest in Brazil

    OpenAIRE

    Pagano, Marcela C.; Cabello, Marta N.

    2011-01-01

    Reforestation provides restoration of forest ecosystem services including improved soil fertility, which leads to increased productivity and/or sustainability of the system. Trees also increase the average carbon stocks providing wood supply for local communities; however, C sequestration strategies highlight tree plantations without considering their full environmental consequences, such as losses in stream flow. The productivity of a site is a consequence of their physical, chemical, and bi...

  9. Applying Product Configuration Systems in Engineering Companies

    DEFF Research Database (Denmark)

    Ladeby, Klaes Rohde

    engineering companies?” Product configuration systems are a fairly young field of research, and the literature used in this project is presented in chapter 2. Chapter 3 begins with a discussion of the scientific point of view, and develops the research questions are by an investigation into shortcomings and......This Ph.D. thesis looks into the application of configuration systems in engineering companies, and how configuration systems can be used to support business processes in engineering companies. Often the motivation stated by researchers and practitioners is, that a configuration project is a......,133 books apply. Type it in on Google scholar and 8,580,000 homepages apply3. Obviously, strategy is an important subject. However, the subject also seems to be difficult to perceive. Although this thesis is not about strategy, or strategizing, I would like to pursue the definition of strategy one step...

  10. Optimal alarm system applied in coffee rust

    Directory of Open Access Journals (Sweden)

    Luciene Resende Gonçalves

    2014-02-01

    Full Text Available Alarm systems have very great utility in detecting and warning of catastrophes. This methodology was applied via TARSO model with Bayesian estimation, serving as a forecasting mechanism for coffee rust disease. The coffee culture is very susceptible to this disease causing several records of incidence in most cultivated crops. Researches involving this limiting factor for production are intense and frequent, indicating environmental factors as responsible for the epidemics spread, which does not occur if these factors are not favorable. The fitting type used by the a posteriori probability, allows the system to be updated each time point. The methodology was applied to the rust index series in the presence of the average temperature series. Thus, it is possible to verify the alarm resulted or in a high catastrophe detection in points at which the catastrophe has not occurred, or in the low detections if the point was already in the catastrophe state.

  11. Plant introduction system applying virtual reality

    International Nuclear Information System (INIS)

    We developed the prototype of the introduction system for nuclear power plant applying 3D-CAD data and the virtual reality (V.R) technologies. For the purpose of the public acceptance (PA), the use of the V.R technologies, such as CG stereographic, will be interesting for the public. Also, it is very important to introduce the components of the plant in detail, which will become easy by using the 3D-CAD data of the nuclear plant. We made a prototype system for introducing the main portion of the nuclear power plant, such as main control room, containment vessel or turbine building, applying CG stereographic by plant 3D data and artificial voice guidance for the explanations. We have exhibited this system in two local festivals at the plant sites. It has been efficient for creating plant scene by using 3D-CAD from the viewpoint of cost, and stereographic has been much attractive to the resident. The detail scenario must be investigated from the viewpoint of PA effect. Also the performance of the graphics workstation should be increased to promote the quality of the CG movie. But we think that this system will have much effective by its novelty and flexibility. (author)

  12. Applied Information Systems Research Program Workshop

    Science.gov (United States)

    1991-01-01

    The first Applied Information Systems Research Program (AISRP) Workshop provided the impetus for several groups involved in information systems to review current activities. The objectives of the workshop included: (1) to provide an open forum for interaction and discussion of information systems; (2) to promote understanding by initiating a dialogue with the intended benefactors of the program, the scientific user community, and discuss options for improving their support; (3) create an advocacy in having science users and investigators of the program meet together and establish the basis for direction and growth; and (4) support the future of the program by building collaborations and interaction to encourage an investigator working group approach for conducting the program.

  13. The Applied Mathematics for Power Systems (AMPS)

    Energy Technology Data Exchange (ETDEWEB)

    Chertkov, Michael [Los Alamos National Laboratory

    2012-07-24

    Increased deployment of new technologies, e.g., renewable generation and electric vehicles, is rapidly transforming electrical power networks by crossing previously distinct spatiotemporal scales and invalidating many traditional approaches for designing, analyzing, and operating power grids. This trend is expected to accelerate over the coming years, bringing the disruptive challenge of complexity, but also opportunities to deliver unprecedented efficiency and reliability. Our Applied Mathematics for Power Systems (AMPS) Center will discover, enable, and solve emerging mathematics challenges arising in power systems and, more generally, in complex engineered networks. We will develop foundational applied mathematics resulting in rigorous algorithms and simulation toolboxes for modern and future engineered networks. The AMPS Center deconstruction/reconstruction approach 'deconstructs' complex networks into sub-problems within non-separable spatiotemporal scales, a missing step in 20th century modeling of engineered networks. These sub-problems are addressed within the appropriate AMPS foundational pillar - complex systems, control theory, and optimization theory - and merged or 'reconstructed' at their boundaries into more general mathematical descriptions of complex engineered networks where important new questions are formulated and attacked. These two steps, iterated multiple times, will bridge the growing chasm between the legacy power grid and its future as a complex engineered network.

  14. Applying usability heuristics to radiotherapy systems

    International Nuclear Information System (INIS)

    Background and purpose: Heuristic evaluations have been used to evaluate safety of medical devices by identifying and assessing usability issues. Since radiotherapy treatment delivery systems often consist of multiple complex user-interfaces, a heuristic evaluation was conducted to assess the potential safety issues of such a system. Material and methods: A heuristic evaluation was conducted to evaluate the treatment delivery system at Princess Margaret Hospital (Toronto, Canada). Two independent evaluators identified usability issues with the user-interfaces and rated the severity of each issue. Results: The evaluators identified 75 usability issues in total. Eighteen of them were rated as high severity, indicating the potential to have a major impact on patient safety. A majority of issues were found on the record and verify system, and many were associated with the patient setup process. While the hospital has processes in place to ensure patient safety, recommendations were developed to further mitigate the risks of potential consequences. Conclusions: Heuristic evaluation is an efficient and inexpensive method that can be successfully applied to radiotherapy delivery systems to identify usability issues and improve patient safety. Although this study was conducted only at one site, the findings may have broad implications for the design of these systems.

  15. Terahertz spectroscopy applied to food model systems

    DEFF Research Database (Denmark)

    Møller, Uffe

    Water plays a crucial role in the quality of food. Apart from the natural water content of a food product, the state of that water is very important. Water can be found integrated into the biological material or it can be added during production of the product. Currently it is difficult to differ...... differentiate between these types of water in subsequent quality controls. This thesis describes terahertz time-domain spectroscopy applied on aqueous food model systems, with particular focus on ethanol-water mixtures and confined water pools in inverse micelles....

  16. Wiener filter applied to a neutrongraphic system

    International Nuclear Information System (INIS)

    The randon characteristics of the image formation process influence the spatial image obtained in a neutrongraphy. Several methods can be used to optimize this image, though estimation of the noise added to the original signal. This work deals with the optimal filtering technique, using Wiener's filter. A simulation is made, where the signal (spatial resolution function) has a Lorentz's form, and ten kinds of random noise with increasing R.M.S. are generated and individually added to the original signal. Wiener's filter is applied to different noise amplitudes and the behaviour of the spatial resolution function for our system is also analysed. (Author)

  17. Integrative Systems Biology Applied to Toxicology

    DEFF Research Database (Denmark)

    Kongsbak, Kristine Grønning

    that were in concordance with their effects in experimental animals. In project II, I profiled the effects on rat liver gene expression levels following exposure to a 14-chemical mixture ± the presence of an endocrine disrupting chemical. This project helped us shed light on the mechanism of action of......Humans are exposed to various chemical agents through food, cosmetics, pharmaceuticals and other sources. Exposure to chemicals is suspected of playing a main role in the development of some adverse health effects in humans. Additionally, European regulatory authorities have recognized the risk...... associated with combined exposure to multiple chemicals. Testing all possible combinations of the tens of thousands environmental chemicals is impractical. This PhD project was launched to apply existing computational systems biology methods to toxicological research. In this thesis, I present in three...

  18. Optical fiber-applied radiation detection system

    International Nuclear Information System (INIS)

    A technique to measure radiation by using plastic scintillation fibers doped radiation fluorescent (scintillator) to plastic optical fiber for a radiation sensor, was developed. The technique contains some superiority such as high flexibility due to using fibers, relatively easy large area due to detecting portion of whole of fibers, and no electromagnetic noise effect due to optical radiation detection and signal transmission. Measurable to wide range of and continuous radiation distribution along optical fiber cable at a testing portion using scintillation fiber and flight time method, the optical fiber-applied radiation sensing system can effectively monitor space radiation dose or apparatus operation condition monitoring. And, a portable type scintillation optical fiber body surface pollution monitor can measure pollution concentration of radioactive materials attached onto body surface by arranging scintillation fiber processed to a plate with small size and flexibility around a man to be tested. Here were described on outline and fundamental properties of various application products using these plastic scintillation fiber. (G.K.)

  19. Biodiversity conservation in agricultural landscapes: challenges and opportunities of coffee agroforests in the Western Ghats, India.

    Science.gov (United States)

    Garcia, Claude A; Bhagwat, Shonil A; Ghazoul, Jaboury; Nath, Cheryl D; Nanaya, Konerira M; Kushalappa, Chepudira G; Raghuramulu, Yenugula; Nasi, Robert; Vaast, Philippe

    2010-04-01

    The new approaches advocated by the conservation community to integrate conservation and livelihood development now explicitly address landscape mosaics composed of agricultural and forested land rather than only protected areas and largely intact forests. We refer specifically to a call by Harvey et al. (2008) to develop a new approach based on six strategies to integrate biodiversity conservation with sustainable livelihoods in Mesoamerican landscape mosaics. We examined the applicability of this proposal to the coffee agroforests of the Western Ghats, India. Of the six strategies, only one directly addresses livelihood conditions. Their approach has a clear emphasis on conservation and, as currently formulated risks repeating the failures of past integrated conservation and development projects. It fails to place the aspirations of farmers at the core of the agenda. Thus, although we acknowledge and share the broad vision and many of the ideas proposed by this approach, we urge more balanced priority setting by emphasizing people as much as biodiversity through a careful consideration of local livelihood needs and aspirations. PMID:20028413

  20. Agroforestería y ética ambiental en la gerencia de sistemas de producción

    OpenAIRE

    Juan José Pérez; Isneira Huerta

    2002-01-01

    El objetivo de este trabajo es realizar un análisis documental sobre el tema de la adopción de sistemas agroforestales en unidades de producción, desde la perspectiva de la ética ambiental en el paradigma de la postmodernidad. En ésta se plantean elementos teóricos y conceptuales de la ética ambiental y la agroforestería. Asimismo, se discute la necesidad de adoptar los sistemas agroforestales como alternativa tecnológica para proteger el medio ambiente y recuperar el equilibrio e...

  1. SORM applied to hierarchical parallel system

    DEFF Research Database (Denmark)

    Ditlevsen, Ove Dalager

    particular first order reliability method (FORM) was first described in a celebrated paper by Rackwitz and Fiessler more than a quarter of a century ago. The method has become known as the Rackwitz-Fiessler algorithm. The original RF-algorithm as applied to a hierarchical random variable model is...

  2. Wavefront compensation applied to AVLIS laser systems

    International Nuclear Information System (INIS)

    The efficiency of an AVLIS system depends upon the power density and uniformity of the laser system. Because of wavefront aberrations the realized beam quality is not ideal. Wavefront compensation provides a means to improve beam quality and system efficiency. (author)

  3. Applying systems engineering to astronomical projects

    Science.gov (United States)

    Craig, Simon C.; Born, Andrew J.

    2004-09-01

    With the award of the VISTA project to the United Kingdom Astronomy Technology Centre (UK ATC), the need for a formal systems approach and dedicated systems engineering management was identified as a key requirement for the success of that project. The structuring of projects within the UK ATC has been increasingly biased toward a systems engineering approach. ROE projects such as CGS4, while very successful, were based on a traditional engineering discipline approach. The systems responsibility was split between the Project Scientist and the Project Manager. Such an approach can be made to work on internal projects where the entire team and project sponsor are in close proximity. As instrumentation projects have grown larger, become more complex and increasingly geographically distributed through international collaboration, the need for technical discipline enforced by a formal system engineering approach has correspondingly grown. Internal projects also benefit and are becoming increasingly reliant on systems engineering as a means to mitigating both schedule and budget risks. This paper describes and analyses the ongoing introduction of a formal systems approach within the UK ATC. Structuring of projects through a sub-system approach rather than by discipline, formal requirements capture, traceability and the use of systems tools to monitor performance are described. The introduction of systems engineering as a discipline is discussed and progress to date reported. Systems engineering activities in previous projects and ongoing implementation in current projects are analysed. Lessons learnt are described and future development in the systems approach outlined.

  4. Obtaining Food Safety by Applying HACCP System

    OpenAIRE

    ION CRIVEANU; NATALIŢA MARIA SPERDEA; RADU CATALIN CRIVEANU

    2012-01-01

    In order to increase the confidence of the trading partners and consumers in the products which are sold on the market, enterprises producing food are required to implement the food safety system HACCP,a particularly useful system because the manufacturer is not able to fully control finished products . SR EN ISO 22000:2005 establishes requirements for a food safety management system where an organization in the food chain needs to proove its ability to control food safety hazards in order to...

  5. OBTAINING FOOD SAFETY BY APPLYING HACCP SYSTEM

    Directory of Open Access Journals (Sweden)

    ION CRIVEANU

    2012-01-01

    Full Text Available In order to increase the confidence of the trading partners and consumers in the products which are sold on the market, enterprises producing food are required to implement the food safety system HACCP,a particularly useful system because the manufacturer is not able to fully control finished products . SR EN ISO 22000:2005 establishes requirements for a food safety management system where an organization in the food chain needs to proove its ability to control food safety hazards in order to ensure that food is safe at the time of human consumption. This paper presents the main steps which ensure food safety using the HACCP system, and SR EN ISO 20000:2005 requirements for food safety.

  6. Applied signal processing concepts, circuits, and systems

    CERN Document Server

    Hamdy, Nadder

    2008-01-01

    Introduction What are Signals? Signal parameters Why Signal processing? Analog vs. Digital Signal processing Practical Signal processing Systems Analog Signal Processing Amplitude Shaping Frequency Spectrum Shaping Phase Errors Correction Waveform Generation Analog Filter Design Describing Equations Design Procedures Filter Specifications Approximations to the Ideal Response Realization Practical RC-Filters Design Switched Capacitor Filter Realization Design examples Data Converters Introduction A typical DSP System Specifications of Data Converters Sampling Samp

  7. Ordering operator technique applied to open systems

    International Nuclear Information System (INIS)

    The normal ordering technique and the coherent representation is used to describe the evolution of an open system of a single oscillator, linearly coupled with an infinite number of reservoir oscillators, and it is shown how to include the dissipation and obtain the exponential decay. (Author)

  8. Spectral Selectivity Applied To Hybrid Concentration Systems

    Science.gov (United States)

    Hamdy, M. A.; Luttmann, F.; Osborn, D. E.; Jacobson, M. R.; MacLeod, H. A.

    1985-12-01

    The efficiency of conversion of concentrated solar energy can be improved by separating the solar spectrum into portions matched to specific photoquantum processes and the balance used for photothermal conversion. The basic approaches of spectrally selective beam splitters are presented. A detailed simulation analysis using TRNSYS is developed for a spectrally selective hybrid photovoltaic/photothermal concentrating system. The analysis shows definite benefits to a spectrally selective approach.

  9. Applying Virtual Realitzy to Molecular Graphics System

    Institute of Scientific and Technical Information of China (English)

    ChangNoYoon; MyungHwanChi; 等

    1996-01-01

    Mlecular graphics can be thought of as a window to the computer through which the chemist expresses ideas for computational evaluation and receives results in an understandable form.Furthermore,with beautiful graphic images it can give out the realistic molecular model like a real thing in real world.Molecule has various properties including volume,electronic,van der waals forces,etc.These properties are very important to understand the molecular world.So if the virtual reality tools are used,then the imaginary world can be studied intuitively by touching and feeling a tremendous amount of data.Computational chemistry generates such amount of molecular property data through supercomputing with molecular simulation experiment.One of the objects to investigate the molecular world is to understand the intermolecular interaction such as drug-receptor interaction.Another thing is to measure the geometrical data in molecular architecture.Virtual reality system provides the easiest way to meet these objects.This kind of simple system changes a numerical data set,which is very difficults to deal with,into a visible and understandable data set.Recently two functions of such a system were improved to get an insight into biomolecular interaction.The first one is a real time force generation during navigation in macromolecular environment.An cylindrical arrow shows the magnitude and direction of molecular force.The second one is to see a molecular vibration such as a concerted motion of the binding site in protein molecule.So one can understand th molecular shape change for drugreceptor docking procedure.But some problems which are difficult to solve still remain.

  10. Chebyshev Expansion Applied to Dissipative Quantum Systems.

    Science.gov (United States)

    Popescu, Bogdan; Rahman, Hasan; Kleinekathöfer, Ulrich

    2016-05-19

    To determine the dynamics of a molecular aggregate under the influence of a strongly time-dependent perturbation within a dissipative environment is still, in general, a challenge. The time-dependent perturbation might be, for example, due to external fields or explicitly treated fluctuations within the environment. Methods to calculate the dynamics in these cases do exist though some of these approaches assume that the corresponding correlation functions can be written as a weighted sum of exponentials. One such theory is the hierarchical equations of motion approach. If the environment, however, is described by a complex spectral density or if its temperature is low, these approaches become very inefficient. Therefore, we propose a scheme based on a Chebyshev decomposition of the bath correlation functions and detail the respective quantum master equations within second-order perturbation theory in the environmental coupling. Similar approaches have recently been proposed for systems coupled to Fermionic reservoirs. The proposed scheme is tested for a simple two-level system and compared to existing results. Furthermore, the advantages and disadvantages of the present Chebyshev approach are discussed. PMID:26845380

  11. Applied optimal control theory of distributed systems

    CERN Document Server

    Lurie, K A

    1993-01-01

    This book represents an extended and substantially revised version of my earlierbook, Optimal Control in Problems ofMathematical Physics,originally published in Russian in 1975. About 60% of the text has been completely revised and major additions have been included which have produced a practically new text. My aim was to modernize the presentation but also to preserve the original results, some of which are little known to a Western reader. The idea of composites, which is the core of the modern theory of optimization, was initiated in the early seventies. The reader will find here its implementation in the problem of optimal conductivity distribution in an MHD-generatorchannel flow.Sincethen it has emergedinto an extensive theory which is undergoing a continuous development. The book does not pretend to be a textbook, neither does it offer a systematic presentation of the theory. Rather, it reflects a concept which I consider as fundamental in the modern approach to optimization of dis­ tributed systems. ...

  12. Liquid Chromatography Applied to Space System

    Science.gov (United States)

    Poinot, Pauline; Chazalnoel, Pascale; Geffroy, Claude; Sternberg, Robert; Carbonnier, Benjamin

    Searching for signs of past or present life in our Solar System is a real challenge that stirs up the curiosity of scientists. Until now, in situ instrumentation was designed to detect and determine concentrations of a wide number of organic biomarkers. The relevant method which was and still is employed in missions dedicated to the quest of life (from Viking to ExoMars) corresponds to the pyrolysis-GC-MS. Along the missions, this approach has been significantly improved in terms of extraction efficiency and detection with the use of chemical derivative agents (e.g. MTBSTFA, DMF-DMA, TMAH…), and in terms of analysis sensitivity and resolution with the development of in situ high-resolution mass spectrometer (e.g. TOF-MS). Thanks to such an approach, organic compounds such as amino acids, sugars, tholins or polycyclic aromatic hydrocarbons (PAHs) were expected to be found. However, while there’s a consensus that the GC-MS of Viking, Huygens, MSL and MOMA space missions worked the way they had been designed to, pyrolysis is much more in debate (Glavin et al. 2001; Navarro-González et al. 2006). Indeed, (1) it is thought to remove low levels of organics, (2) water and CO2 could interfere with the detection of likely organic pyrolysis products, and (3) only low to mid-molecular weight organic molecules can be detected by this technique. As a result, researchers are now focusing on other in situ techniques which are no longer based on the volatility of the organic matter, but on the liquid phase extraction and analysis. In this line, micro-fluidic systems involving sandwich and/or competitive immunoassays (e.g. LMC, SOLID; Parro et al. 2005; Sims et al. 2012), micro-chip capillary electrophoreses (e.g. MOA; Bada et al. 2008), or nanopore-based analysis (e.g. BOLD; Schulze-Makuch et al. 2012) have been conceived for in situ analysis. Thanks to such approaches, molecular biological polymers (polysaccharides, polypeptides, polynucleotides, phospholipids, glycolipids

  13. Applying Algebraic Specifications on Digital Right Management Systems

    OpenAIRE

    Triantafyllou, Nikolaos; Ksystra, Katerina; Stefaneas, Petros; Frangos, Panayiotis

    2011-01-01

    Digital Right Management (DRM) Systems have been created to meet the need for digital content protection and distribution. In this paper we present some of the directions of our ongoing research to apply algebraic specification techniques on mobile DRM systems.

  14. Análisis dasométrico y propuesta de ordenamiento agroforestal del bosque en Tetela de Ocampo, Puebla

    Directory of Open Access Journals (Sweden)

    F. Domínguez-Hernández

    2012-01-01

    Full Text Available La Sierra Norte de Puebla tiene recursos agroforestales con potencial comercial, pero deficiente planeación. El objetivo fue determinar variables dasométricas y condiciones del predio forestal proponiendo el manejo sustentable agroforestal. Se utilizó el muestreo sistemático. Los resultados muestran predominancia de Quercus sp. y Pinus pseudostrobus. Hay combinación de 78 árboles de pino/ha y 275 árboles de encino/ ha, área basal de 9.30 m2/ha para pino, 10.67 m2/ha de encino, altura promedio de 18.16 m y 10.07 m, respectivamente; volumen de pino 54.60 m3/ha y 29.04 m3/ha de encino. Con tres áreas: producción, restauración y conservación; para aprovechamiento, protección y fomento forestal.

  15. A Vision for Systems Engineering Applied to Wind Energy (Presentation)

    Energy Technology Data Exchange (ETDEWEB)

    Felker, F.; Dykes, K.

    2015-01-01

    This presentation was given at the Third Wind Energy Systems Engineering Workshop on January 14, 2015. Topics covered include the importance of systems engineering, a vision for systems engineering as applied to wind energy, and application of systems engineering approaches to wind energy research and development.

  16. Towards Configuration of applied Web-based information system

    CERN Document Server

    Levin, Mark Sh

    2011-01-01

    In the paper, combinatorial synthesis of structure for applied Web-based systems is described. The problem is considered as a combination of selected design alternatives for system parts/components into a resultant composite decision (i.e., system configuration design). The solving framework is based on Hierarchical Morphological Multicriteria Design (HMMD) approach: (i) multicriteria selection of alternatives for system parts, (ii) composing the selected alternatives into a resultant combination (while taking into account ordinal quality of the alternatives above and their compatibility). A lattice-based discrete space is used to evaluate (to integrate) quality of the resultant combinations (i.e., composite system decisions or system configurations). In addition, a simplified solving framework based on multicriteria multiple choice problem is considered. A multistage design process to obtain a system trajectory is described as well. The basic applied example is targeted to an applied Web-based system for a c...

  17. XML: How It Will Be Applied to Digital Library Systems.

    Science.gov (United States)

    Kim, Hyun-Hee; Choi, Chang-Seok

    2000-01-01

    Shows how XML is applied to digital library systems. Compares major features of XML with those of HTML and describes an experimental XML-based metadata retrieval system, which is based on the Dublin Core and is designed as a subsystem of the Korean Virtual Library and Information System (VINIS). (Author/LRW)

  18. Research on Applying Bluetooth to an Elevator Wireless Control System

    Institute of Scientific and Technical Information of China (English)

    MA Jian-cang; LUO Ya-jun; ZHAO Yu-ting

    2003-01-01

    Compared with other elevator control systems, the wireless control system has many advanta ges such as easy to install and maintain. Bluetooth is a new technology of short-range wireless communication, and the idea of applying Bluetooth to the elevator wireless control system is expected to get wide application. In this paper, a wireless control prototype system is introduced, and the experimentsof this system proved the feasibility of this idea.

  19. Estudio de la diversidad de plantas vasculares del sistema agroforestal dehesa y de otros usos del suelo en los municipios de Barcarrota y Olivenza (Badajoz)

    OpenAIRE

    Sánchez Olivera, Jose Antonio

    2014-01-01

    Estudio en colaboración con el grupo de trabajo de ecología del paisaje del CIFOR-INIA enmarcado en el proyecto "El sistema agroforestal dehesa como sumidero de carbono: hacia un modelo conjunto de la vegetación y el suelo". Mediante el inventario con marcelas multiescalares, se relaciona la riqueza y abundancia de especies de plantas vasculares a las distintas tipologías o usos del suelo proporcionadas por el MFE50, entre otros objetivos.

  20. Complex, Dynamic Systems: A New Transdisciplinary Theme for Applied Linguistics?

    Science.gov (United States)

    Larsen-Freeman, Diane

    2012-01-01

    In this plenary address, I suggest that Complexity Theory has the potential to contribute a transdisciplinary theme to applied linguistics. Transdisciplinary themes supersede disciplines and spur new kinds of creative activity (Halliday 2001 [1990]). Investigating complex systems requires researchers to pay attention to system dynamics. Since…

  1. A Federal Reserve System conference on research in applied microeconomics

    OpenAIRE

    Garrett, Thomas A

    2011-01-01

    This article summarizes papers presented at the System Applied Microeconomics Conference organized and hosted by the Federal Reserve Bank of St. Louis on May 5-6, 2011. This annual conference brings together economists from the Federal Reserve District Banks across the Federal Reserve System and the Federal Reserve Board to present their latest economic research.

  2. Path Integration Applied to Structural Systems with Uncertain Properties

    DEFF Research Database (Denmark)

    Nielsen, Søren R.K.; Köylüoglu, H. Ugur

    Path integration (cell-to-cell mapping) method is applied to evaluate the joint probability density function (jpdf) of the response of the structural systems, with uncertain properties, subject to white noise excitation. A general methodology to deal with uncertainties is outlined and applied to ...... the friction controlled slip of a structure on a foundation where the friction coefficient is modelled as a random variable. Exact results derived using the total probability theorem are compared to the ones obtained via path integration.......Path integration (cell-to-cell mapping) method is applied to evaluate the joint probability density function (jpdf) of the response of the structural systems, with uncertain properties, subject to white noise excitation. A general methodology to deal with uncertainties is outlined and applied to...

  3. Applying aspects to a real-time embedded operating system

    OpenAIRE

    Afonso, Francisco; Silva, Carlos A.; Montenegro, Sérgio; Tavares, Adriano

    2007-01-01

    The application of aspect-oriented programming (AOP) to the embedded operating system domain is still a very controversial topic, as this area demands high performance and small memory footprint. However, recent studies quantifying aspects overheads in AspectC++ show that the resource cost is very low. Therefore, operating system development may benefit with the modularization of crosscutting concerns and system specialization offered by AOP. This paper addresses our experience in applying...

  4. Oscillating system design applying universal formula for control

    OpenAIRE

    Efimov, Denis; Perruquetti, Wilfrid

    2011-01-01

    The problem of oscillating system design applying the homogeneity approach is studied. The Anti-control Lyapunov Function (ALF) is introduced as a counterpart of Control Lyapunov Function (CLF) for the control design that destabilizes a nonlinear system. A universal anti-control formula is proposed. Next, the universal control formulas based on ALF and CLF are used to design an oscillating system. Efficiency of the proposed approach is demonstrated on example.

  5. Applying systems engineering methodologies to the micro- and nanoscale realm

    Science.gov (United States)

    Garrison Darrin, M. Ann

    2012-06-01

    Micro scale and nano scale technology developments have the potential to revolutionize smart and small systems. The application of systems engineering methodologies that integrate standalone, small-scale technologies and interface them with macro technologies to build useful systems is critical to realizing the potential of these technologies. This paper covers the expanding knowledge base on systems engineering principles for micro and nano technology integration starting with a discussion of the drivers for applying a systems approach. Technology development on the micro and nano scale has transition from laboratory curiosity to the realization of products in the health, automotive, aerospace, communication, and numerous other arenas. This paper focuses on the maturity (or lack thereof) of the field of nanosystems which is emerging in a third generation having transitioned from completing active structures to creating systems. The emphasis of applying a systems approach focuses on successful technology development based on the lack of maturity of current nano scale systems. Therefore the discussion includes details relating to enabling roles such as product systems engineering and technology development. Classical roles such as acquisition systems engineering are not covered. The results are also targeted towards small-scale technology developers who need to take into account systems engineering processes such as requirements definition, verification, and validation interface management and risk management in the concept phase of technology development to maximize the likelihood of success, cost effective micro and nano technology to increase the capability of emerging deployed systems and long-term growth and profits.

  6. Applying Sustainable Systems Development Approach to Educational Technology Systems

    Science.gov (United States)

    Huang, Albert

    2012-01-01

    Information technology (IT) is an essential part of modern education. The roles and contributions of technology to education have been thoroughly documented in academic and professional literature. Despite the benefits, the use of educational technology systems (ETS) also creates a significant impact on the environment, primarily due to energy…

  7. Speech Recognition Technology Applied to Intelligent Mobile Navigation System

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    The capability of human-computer interaction reflects the intelligent degree of mobile navigation system.The navigation data and functions of mobile navigation system are divided into system commands and non-system commands in this paper.And then a group of speech commands are Abstracted.This paper applies speech recognition technology to intelligent mobile navigation system to process speech commands and does some deep research on the integration of speech recognition technology with mobile navigation system.The navigation operation can be performed by speech commands,which makes human-computer interaction easy during navigation.Speech command interface of navigation system is implemented by Dutty ++ Software,which is based on speech recognition system -Via Voice of IBM.Through navigation experiments,navigation can be done almost without keyboard,which proved that human-computer interaction is very convenient by speech commands and the reliability is also higher.

  8. Human-Machine Systems concepts applied to Control Engineering Education

    OpenAIRE

    Marangé, Pascale; Gellot, François; Riera, Bernard

    2008-01-01

    In this paper, we interest us to Human-Machine Systems (HMS) concepts applied to Education. It is shown how the HMS framework enables to propose original solution in matter of education in the field of control engineering. We focus on practical courses on control of manufacturing systems. The proposed solution is based on an original use of real and large-scale systems instead of simulation. The main idea is to enable the student, whatever his/her level to control the whole system, from novic...

  9. Database management systems understanding and applying database technology

    CERN Document Server

    Gorman, Michael M

    1991-01-01

    Database Management Systems: Understanding and Applying Database Technology focuses on the processes, methodologies, techniques, and approaches involved in database management systems (DBMSs).The book first takes a look at ANSI database standards and DBMS applications and components. Discussion focus on application components and DBMS components, implementing the dynamic relationship application, problems and benefits of dynamic relationship DBMSs, nature of a dynamic relationship application, ANSI/NDL, and DBMS standards. The manuscript then ponders on logical database, interrogation, and phy

  10. Apply Functional Modelling to Consequence Analysis in Supervision Systems

    OpenAIRE

    Zhang, Xinxin; Lind, Morten; Gola, Giulio; Ravn, Ole

    2013-01-01

    This paper will first present the purpose and goals of applying functional modelling approach to consequence analysis by adopting Multilevel Flow Modelling (MFM). MFM Models describe a complex system in multiple abstraction levels in both means-end dimension and whole-part dimension. It contains causal relations between functions and goals. A rule base system can be developed to trace the causal relations and perform consequence propagations. This paper will illustrate how to use MFM for cons...

  11. Applied Information Systems Research Program (AISRP) Workshop 3 meeting proceedings

    Science.gov (United States)

    1993-01-01

    The third Workshop of the Applied Laboratory Systems Research Program (AISRP) met at the Univeristy of Colorado's Laboratory for Atmospheric and Space Physics in August of 1993. The presentations were organized into four sessions: Artificial Intelligence Techniques; Scientific Visualization; Data Management and Archiving; and Research and Technology.

  12. Susceptibilidad del suelo a la degradación en parcelas con manejo agroforestal Quesungual en Nicaragua

    Directory of Open Access Journals (Sweden)

    Jellín del Carmen Pavón T

    2010-01-01

    Full Text Available Durante tres años se establecieron en un Andisol del municipio de Somotillo (Nicaragua los sistemas de usos de tierra: tradicional del productor (tala, quema, fertilización y siembra de maíz + fríjol; agroforestal Quesungual (SAQ (no quema, árboles nativos en regeneración natural y siembra de maíz + fríjol; residuos de cultivos (manejo de cobertura con residuos de cultivos; y testigo bosque secundario (tacotal de aproximadamente cinco años de edad no cultivado. Se hicieron muestreos de suelos a profundidades de 0-5, 5-10 y 10-20 cm para caracterización física y de fertilidad y estimación de la erosión hídrica por simulación. Los sistemas Quesungal y Residuos de Cultivo, mantuvieron la susceptibilidad del suelo a la erosión en niveles tan bajos como los del bosque natural secundario.

  13. Susceptibilidad del suelo a la degradación en parcelas con manejo agroforestal Quesungual en Nicaragua

    Directory of Open Access Journals (Sweden)

    Pavón T Jellín del Carmen

    2010-03-01

    Full Text Available Durante tres años se establecieron en un Andisol del municipio de Somotillo (Nicaragua los sistemas de usos de tierra: tradicional del productor (tala, quema, fertilización y siembra de maíz + fríjol; agroforestal Quesungual (SAQ (no quema, árboles nativos en regeneración natural y siembra de maíz + fríjol; residuos de cultivos (manejo de cobertura con residuos de cultivos; y testigo bosque secundario (tacotal de aproximadamente cinco años de edad no cultivado. Se hicieron muestreos de suelos a profundidades de 0-5, 5-10 y 10-20 cm para caracterización física y de fertilidad y estimación de la erosión hídrica por simulación. Los sistemas Quesungal y Residuos de Cultivo, mantuvieron la susceptibilidad del suelo a la erosión en niveles tan bajos como los del bosque natural secundario.

  14. An overview of decision tree applied to power systems

    DEFF Research Database (Denmark)

    Liu, Leo; Rather, Zakir Hussain; Chen, Zhe;

    2013-01-01

    Tree (CART), has gained increasing interests because of its high performance in terms of computational efficiency, uncertainty manageability, and interpretability. This paper presents an overview of a variety of DT applications to power systems for better interfacing of power systems with data......The corrosive volume of available data in electric power systems motivate the adoption of data mining techniques in the emerging field of power system data analytics. The mainstream of data mining algorithm applied to power system, Decision Tree (DT), also named as Classification And Regression...... analytics. The fundamental knowledge of CART algorithm is also introduced which is then followed by examples of both classification tree and regression tree with the help of case study for security assessment of Danish power system....

  15. Three-dimensional integrated CAE system applying computer graphic technique

    International Nuclear Information System (INIS)

    A three-dimensional CAE system for nuclear power plant design is presented. This system utilizes high-speed computer graphic techniques for the plant design review, and an integrated engineering database for handling the large amount of nuclear power plant engineering data in a unified data format. Applying this system makes it possible to construct a nuclear power plant using only computer data from the basic design phase to the manufacturing phase, and it increases the productivity and reliability of the nuclear power plants. (author)

  16. Neurofuzzy evolutionary models applied to non-linear systems identification

    International Nuclear Information System (INIS)

    Neurofuzzy models are attractive to system identification to combine learning and structural features of neural network and the exposition based in rules associated to fuzzy systems. Genetic programming is a genetic algorithm extension where individuals are computer programs. It was proposed a modeling scheme where it's created, through genetic programming, a population of neurofuzzy systems capable to identify a given non-linear system. The data obtained when applying the resulting system to the identification of a simple non-linear function allows to conclude the technique has a quite promising application potential, and that are necessary improvements so that solutions can be obtained with a smaller number of generations and consequently in a smaller space of time. (author)

  17. Adaptive Robotic Systems Design in University of Applied Sciences

    OpenAIRE

    Gunsing Jos; Gijselhart Fons; Hagemans Nyke; Jonkers Hans; Kivits Eric; Klijn Peter; Kapteijns Bart; Kroeske Diederich; Langen Hans; Oerlemans Bart; Oostindie Jan; van Stuijvenberg Joost

    2016-01-01

    In the industry for highly specialized machine building (small series with high variety and high complexity) and in healthcare a demand for adaptive robotics is rapidly coming up. Technically skilled people are not always available in sufficient numbers. A lot of know how with respect to the required technologies is available but successful adaptive robotic system designs are still rare. In our research at the university of applied sciences we incorporate new available technologies in our edu...

  18. Abundance of Jackfruit ( Artocarpus heterophyllus) Affects Group Characteristics and Use of Space by Golden-Headed Lion Tamarins ( Leontopithecus chrysomelas) in Cabruca Agroforest

    Science.gov (United States)

    Oliveira, Leonardo C.; Neves, Leonardo G.; Raboy, Becky E.; Dietz, James M.

    2011-08-01

    Cabruca is an agroforest of cacao trees shaded by native forest trees. It is the predominant vegetation type throughout eastern part of the range of the golden-headed lion tamarins, Leontopithecus chrysomelas, an endangered primate endemic to Atlantic Forest. Understanding how lion tamarins use this agroforest is a conservation priority. To address this question, we documented the diet, home range size, group sizes and composition, density, number of litters and body condition of lion tamarins living in cabruca, and other habitats. Jackfruit, Artocarpus heterophyllus, was the most used species used by lion tamarins in cabruca and was widely available and used throughout the year. In cabruca, home range size was the smallest (22-28 ha) and density of lion tamarins was the highest (1.7 ind/ha) reported for the species. Group size averaged 7.4 individuals and was not significantly different among the vegetation types. In cabruca, groups produced one or two litters a year, and all litters were twins. Adult males in cabruca were significantly heavier than males in primary forest. Our study is the first to demonstrate that breeding groups of golden-headed lion tamarins can survive and reproduce entirely within cabruca agroforest. Jackfruit proved to be a keystone resource for lion tamarins in cabruca, and bromeliads were important as an animal prey foraging microhabitat. In cases where cabruca contains concentrated resources, such as jackfruit and bromeliads, lion tamarins may not only survive and reproduce but may fare better than in other forest types, at least for body condition and reproduction.

  19. Probabilistic Analysis Techniques Applied to Complex Spacecraft Power System Modeling

    Science.gov (United States)

    Hojnicki, Jeffrey S.; Rusick, Jeffrey J.

    2005-01-01

    Electric power system performance predictions are critical to spacecraft, such as the International Space Station (ISS), to ensure that sufficient power is available to support all the spacecraft s power needs. In the case of the ISS power system, analyses to date have been deterministic, meaning that each analysis produces a single-valued result for power capability because of the complexity and large size of the model. As a result, the deterministic ISS analyses did not account for the sensitivity of the power capability to uncertainties in model input variables. Over the last 10 years, the NASA Glenn Research Center has developed advanced, computationally fast, probabilistic analysis techniques and successfully applied them to large (thousands of nodes) complex structural analysis models. These same techniques were recently applied to large, complex ISS power system models. This new application enables probabilistic power analyses that account for input uncertainties and produce results that include variations caused by these uncertainties. Specifically, N&R Engineering, under contract to NASA, integrated these advanced probabilistic techniques with Glenn s internationally recognized ISS power system model, System Power Analysis for Capability Evaluation (SPACE).

  20. Water management - management actions applied to water resources system

    International Nuclear Information System (INIS)

    In this paper are presented a general description of water resource systems, a systematisation of the management tasks and the approaches for solution, including a review of methods used for solution of water management tasks and the fundamental postulates in the management. The management of water resources is a synonym for the management actions applied to water resource systems. It is a general term that unites planning and exploitation of the systems. The modern planning assumes separating the water racecourse part from the hydro technical part of the project. The water resource study is concerned with the solution for the resource problem. This means the parameters of the system are determined in parallel with the definition of the water utilisation regime. The hydro-technical part of the project is the design of structures necessary for the water resource solution. (Original)

  1. Applied Ontology Engineering in Cloud Services, Networks and Management Systems

    CERN Document Server

    Serrano Orozco, J Martín

    2012-01-01

    Metadata standards in today’s ICT sector are proliferating at unprecedented levels, while automated information management systems collect and process exponentially increasing quantities of data. With interoperability and knowledge exchange identified as a core challenge in the sector, this book examines the role ontology engineering can play in providing solutions to the problems of information interoperability and linked data. At the same time as introducing basic concepts of ontology engineering, the book discusses methodological approaches to formal representation of data and information models, thus facilitating information interoperability between heterogeneous, complex and distributed communication systems. In doing so, the text advocates the advantages of using ontology engineering in telecommunications systems. In addition, it offers a wealth of guidance and best-practice techniques for instances in which ontology engineering is applied in cloud services, computer networks and management systems. �...

  2. VALORIZACIÓN INTEGRAL DE LA BIOMASA LEÑOSA AGROFORESTAL A LO LARGO DEL GRADIENTE ALTITUDINAL EN CONDICIONES MEDITERRÁNEAS

    OpenAIRE

    FERNÁNDEZ PURATICH, HARALD WILSON

    2013-01-01

    La biomasa leñosa como recurso material o bioenergético varía principalmente según especie, condiciones ambientales que influyen en su producción y dispersión en el territorio. La estimación de la disponibilidad y aptitud de este recurso es hoy en día crucial para el desarrollo sostenible del sector agroforestal y, en concreto, de la cadena de valor monte-industria-consumo. Debido a la dispersión de esta fuente de materia prima en el territorio y a los altos costes log...

  3. SISTEMA AGROFORESTAL PARA EL USO RACIONAL DEL SUELO EN EL MUNICIPIO SAN JOSÉ DE LAS LAJAS, PROVINCIA MAYABEQUE

    Directory of Open Access Journals (Sweden)

    María I. Pavón Rosales

    2014-01-01

    Full Text Available La investigación se realizó en la Finca Forestal Integral (FFI no. 8 del municipio San José de las Lajas provincia Mayabeque, durante los años 2008-2010 con el objetivo de evaluar la incidencia de un Sistema Agroforestal (SAF como alternativa para el uso eficiente del suelo. La metodología de estudio se fundamentó en los principios de la agroecología y se diseñó a partir de la concepción de las FFI, además de la integración de métodos de diagnóstico utilizados en diferentes metodologías para lograr los objetivos propuestos. Se ejecutaron tres etapas que comenzaron con la caracterización edafológica del área de estudio, diagnóstico integral de la finca, además del establecimiento y evaluación de técnicas agroforestales en función del uso racional y eficiente del recurso suelo. Los resultados permitieron reconocer las principales limitaciones y potencialidades de la finca, que hicieron posible la definición, establecimiento y evaluación de técnicas agroforestales como parte de un SAF para el uso racional del suelo. En este contexto la técnica del cultivo en callejones o asociación de especies arbóreas con cultivosanuales, contribuyó al aumento de la eficiencia en el uso de la tierra y la agrobiodiversidad del ecosistema estudiado.

  4. Applied Information Systems Research Program (AISRP). Workshop 2: Meeting Proceedings

    Science.gov (United States)

    1992-01-01

    The Earth and space science participants were able to see where the current research can be applied in their disciplines and computer science participants could see potential areas for future application of computer and information systems research. The Earth and Space Science research proposals for the High Performance Computing and Communications (HPCC) program were under evaluation. Therefore, this effort was not discussed at the AISRP Workshop. OSSA's other high priority area in computer science is scientific visualization, with the entire second day of the workshop devoted to it.

  5. Applying principles of health system strengthening to eye care

    Directory of Open Access Journals (Sweden)

    Karl Blanchet

    2012-01-01

    Full Text Available Understanding Health systems have now become the priority focus of researchers and policy makers, who have progressively moved away from a project-centred perspectives. The new tendency is to facilitate a convergence between health system developers and disease-specific programme managers in terms of both thinking and action, and to reconcile both approaches: one focusing on integrated health systems and improving the health status of the population and the other aiming at improving access to health care. Eye care interventions particularly in developing countries have generally been vertically implemented (e.g. trachoma, cataract surgeries often with parallel organizational structures or specialised disease specific services. With the emergence of health system strengthening in health strategies and in the service delivery of interventions there is a need to clarify and examine inputs in terms governance, financing and management. This present paper aims to clarify key concepts in health system strengthening and describe the various components of the framework as applied in eye care interventions.

  6. Fractional Euler-Lagrange Equations Applied to Oscillatory Systems

    Directory of Open Access Journals (Sweden)

    Sergio Adriani David

    2015-04-01

    Full Text Available In this paper, we applied the Riemann-Liouville approach and the fractional Euler-Lagrange equations in order to obtain the fractional nonlinear dynamic equations involving two classical physical applications: “Simple Pendulum” and the “Spring-Mass-Damper System” to both integer order calculus (IOC and fractional order calculus (FOC approaches. The numerical simulations were conducted and the time histories and pseudo-phase portraits presented. Both systems, the one that already had a damping behavior (Spring-Mass-Damper and the system that did not present any sort of damping behavior (Simple Pendulum, showed signs indicating a possible better capacity of attenuation of their respective oscillation amplitudes. This implication could mean that if the selection of the order of the derivative is conveniently made, systems that need greater intensities of damping or vibrating absorbers may benefit from using fractional order in dynamics and possibly in control of the aforementioned systems. Thereafter, we believe that the results described in this paper may offer greater insights into the complex behavior of these systems, and thus instigate more research efforts in this direction.

  7. Applying principles of health system strengthening to eye care

    Science.gov (United States)

    Blanchet, Karl; Patel, Daksha

    2012-01-01

    Understanding Health systems have now become the priority focus of researchers and policy makers, who have progressively moved away from a project-centred perspectives. The new tendency is to facilitate a convergence between health system developers and disease-specific programme managers in terms of both thinking and action, and to reconcile both approaches: one focusing on integrated health systems and improving the health status of the population and the other aiming at improving access to health care. Eye care interventions particularly in developing countries have generally been vertically implemented (e.g. trachoma, cataract surgeries) often with parallel organizational structures or specialised disease specific services. With the emergence of health system strengthening in health strategies and in the service delivery of interventions there is a need to clarify and examine inputs in terms governance, financing and management. This present paper aims to clarify key concepts in health system strengthening and describe the various components of the framework as applied in eye care interventions. PMID:22944762

  8. Applied systems ecology: models, data, and statistical methods

    Energy Technology Data Exchange (ETDEWEB)

    Eberhardt, L L

    1976-01-01

    In this report, systems ecology is largely equated to mathematical or computer simulation modelling. The need for models in ecology stems from the necessity to have an integrative device for the diversity of ecological data, much of which is observational, rather than experimental, as well as from the present lack of a theoretical structure for ecology. Different objectives in applied studies require specialized methods. The best predictive devices may be regression equations, often non-linear in form, extracted from much more detailed models. A variety of statistical aspects of modelling, including sampling, are discussed. Several aspects of population dynamics and food-chain kinetics are described, and it is suggested that the two presently separated approaches should be combined into a single theoretical framework. It is concluded that future efforts in systems ecology should emphasize actual data and statistical methods, as well as modelling.

  9. A Novel Surveillance System Applied in Civil Airport

    Directory of Open Access Journals (Sweden)

    Sun Hua Bo

    2016-01-01

    Full Text Available Conventional security monitoring of civil airport usually uses a fixed camera to acquire images. There are several problems with performance including difficulties introduced in the information transmission, storage, and analysis of the process. Insect compound eyes offer unique advantages for moving target capture and these have attracted the attention of many researchers in recent years. This paper contributes to this research by proposing a new surveillance system applied in civil airport. We discuss the finished bionic structure of the system, the development of the bionic control circuit, and introduce the proposed mathematical model of bionic compound eyes for data acquisition and image mosaic. Image matching for large view is also illustrated with different conditions. This mode and algorithm effectively achieve safety surveillance of airport with large field of view and high real-time processing.

  10. Concept of system and applied software for reactor calculations

    International Nuclear Information System (INIS)

    Knowledge engineering, a vigorously developing field of computer program technology, makes it possible to take a new look at the traditional problems of mathematical simulation of such complex facilities as reactors. At present the use of systems, including the use of formalized problems to some degree, is the cutting edge of technology for organizing work with large sets of programs. In mathematical simulation problems they can be used to build systems of computational programs on the basis of computing module libraries, ensure efficient operation, and facilitate work previously compiled large, complex packages of applied programs. Moreover, at present we must start from the need to make maximum use of available scientific developments in mathematical simulation of reactors with a further accumulation of knowledge. Previously, large programs and program systems were developed but usually were not computed. When new problems cropped up for solution, therefore, efforts again had to be concentrated on producing separate computing modules (to a considerable extent from ready programs) while simultaneously developing system software and a database to operate with the computing module libraries created

  11. Management information system applied to radiation protection services

    Energy Technology Data Exchange (ETDEWEB)

    Grossi, Pablo Andrade; Souza, Leonardo Soares de; Figueiredo, Geraldo Magela; Figueiredo, Arthur, E-mail: pabloag@cdtn.br, E-mail: lss@cdtn.br, E-mail: gmf@cdtn.br, E-mail: arthurqof@gmail.com [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2013-07-01

    An effective management information system based on technology, information and people is necessary to improve the safety on all processes and operations subjected to radiation risks. The complex and multisource information flux from all radiation protection activities on nuclear organizations requires a robust tool/system to highlight the strengths and weaknesses and identify behaviors and trends on the activities requiring radiation protection programs. Those organized and processed data are useful to reach a successful management and to support the human decision-making on nuclear organization. This paper presents recent improvements on a management information system based on the radiation protection directives and regulations from Brazilian regulatory body. This radiation protection control system is applied to any radiation protection services and research institutes subjected to Brazilian nuclear regulation and is a powerful tool for continuous management, not only indicating how the health and safety activities are going, but why they are not going as well as planned showing up the critical points. (author)

  12. Hyperspectral imaging applied to complex particulate solids systems

    Science.gov (United States)

    Bonifazi, Giuseppe; Serranti, Silvia

    2008-04-01

    HyperSpectral Imaging (HSI) is based on the utilization of an integrated hardware and software (HW&SW) platform embedding conventional imaging and spectroscopy to attain both spatial and spectral information from an object. Although HSI was originally developed for remote sensing, it has recently emerged as a powerful process analytical tool, for non-destructive analysis, in many research and industrial sectors. The possibility to apply on-line HSI based techniques in order to identify and quantify specific particulate solid systems characteristics is presented and critically evaluated. The originally developed HSI based logics can be profitably applied in order to develop fast, reliable and lowcost strategies for: i) quality control of particulate products that must comply with specific chemical, physical and biological constraints, ii) performance evaluation of manufacturing strategies related to processing chains and/or realtime tuning of operative variables and iii) classification-sorting actions addressed to recognize and separate different particulate solid products. Case studies, related to recent advances in the application of HSI to different industrial sectors, as agriculture, food, pharmaceuticals, solid waste handling and recycling, etc. and addressed to specific goals as contaminant detection, defect identification, constituent analysis and quality evaluation are described, according to authors' originally developed application.

  13. Barometric altimetry system as virtual constellation applied in CAPS

    Institute of Scientific and Technical Information of China (English)

    AI GuoXiang; SHENG PeiXuan; DU JinLin; ZHENG YongGuang; CAI XianDe; WU HaiTao; HU YongHui; HUA Yu; LI XiaoHui

    2009-01-01

    This work describes the barometric altimetry as virtual constellation applied to the Chinese Area Positioning System (CAPS),which uses the transponders of communication satellites to transfer navigation messages to users.Barometric altimetry depends on the relationship of air pressure varying with altitude in the Earth's atmosphere.Once the air pressure at a location is measured the site altitude can be found.This method is able to enhance and improve the availability of three-dimensional positioning.The difficulty is that the relation between barometric pressure and altitude is variable in different areas and under various weather conditions.Hence,in order to obtain higher accuracy,we need to acquire the real-time air pressure corresponding to an altimetric region's reference height.On the other hand,the altimetry method will be applied to satellite navigation system,but the greatest difficulty lies in how to get the real-time air pressure value at the reference height in the broad areas overlaid by satellite navigation.We propose an innovational method to solve this problem.It is to collect the real-time air pressures and temperatures of the 1860 known-altitude weather observatories over China and around via satellite communication and to carry out time extrapolation forecast uniformly.To reduce data quantity,we first partition the data and encode them and then broadcast these information via navigation message to CAPS users' receivers.Upon the interpolations being done in receivers,the reference air pressure and temperature at the receiver's nearby place is derived.Lastly,combing with the receiver-observed real air pressure and temperature,the site's altitude can be determined.The work is presented in the following aspects:the calculation principle,formulae,data collection,encoding,prediction,interpolation method,navigation message transmission together with errors causes and analyses.The advantages and shortcomings of the technique are discussed at the end.

  14. Basal respiration and composition of microbial biomass in virgin and agroforest-reclaimed semidesert soils of the Northern Caspian region

    Science.gov (United States)

    Prikhod'ko, V. E.; Sizemskaya, M. L.

    2015-08-01

    Virgin semidesert soils and their analogues subjected to agroforest reclamation 60 years ago were studied in the area of the Dzhanybek Research Station of the Institute of Forest Science of the Russian Academy of Sciences in the Northern Caspian region. The values of Cmic and soil basal respiration (BR) significantly vary among the separate plots. In the 0- to 10-cm layer, the BR rate is 0.28-2.44 μg C-CO2/(g h); the minimum values are typical for the arable soils of the interbelt area, and the maximum values are found in the meadow-chestnut soils of mesodepressions under the forest belt with a strong zoogenic effect. The content of Cmic increases from 415 to 1388 μg C/g soil in the following series: virgin solonetz-agro-afforested soils- virgin meadow-chestnut soils = their forest analogues. The fungi/bacteria ratio is 1.3-3.0; the fungal component of soils reaches 53-85% of Cmic, and its absolute values increase from 236 to 1040 μg C/g in the same soil series. Correlation was found between Corg and BR ( r = 0.89), between Corg and Cmic ( r = 0.87), and between BR and Cmic ( r = 0.89). The portion of Cmic in Corg is 3.2-8.6%; the minimum values are found for virgin solonetz and meadow-chestnut soil under forest belt with strong zoogenic effect. The values of qCO2 (ratio of BR to Cmic) are in the range of 0.7-2 μg C-CO2/(mg Cmic g h). At the afforestation of soils in natural and artificial mesodepressions, the activation of microbial community and humification processes is noted compared to the virgin analogues; unstable microbiological processes and a decreased Corg content because of deep tillage and the reduced input of plant residues in the permanent bare fallow between forest belts are revealed in the agro-afforested solonetzes and meadow-chestnut soils of microdepressions.

  15. The Gtz system management applied to photovoltaic rural electrification projects

    Energy Technology Data Exchange (ETDEWEB)

    Rosenthal, Pablo [Brendel Proper, (Bolivia)]|[GTZ-Cooperacion Tecnica de la Republica de Alemania, (Germany)

    1995-12-31

    The GTZ (Federal Republic of Germany Technical Cooperation Society) has developed a general project design system, particularly for Renewable Energy, that systematically covers all aspects necessary in their planning and implementation, so that their effects are sustainable in the long run, and cover as well all the requirements of a determined diffusion. This is what they have called System Management. This methodology of project implementation can be described as capable of being applied to any action area, and has already proved and validated its efficiency in projects where it has been applied. The main reason for its use is based on the correction of previous experiences with projects that had a tendency towards one area of action alone, in a much too exclusive way -mainly the technological- neglecting important aspects in the sustainability of technologies being introduced. The experience of PROPER - Bolivia (Programa para la difusion de energias renovables), who has been applying this system to its projects, is being used as a methodological basis. PROPER started in 1991, and is programed to last until September or 1996. Among the main components being described in the system`s methodology, in the particular case of PHOTOVOLTAIC RURAL ELECTRIFICATION PROJECTS, stand out the areas of Technological Transference; Training; Diffusion; Financing; Energy Policy; Planning, Monitoring, and Evaluation; and Support and Follow-up to the supply and demand. [Espanol] La GTZ (Sociedad de Cooperacion Tecnica de la Republica Federal de Alemania) ha desarrollado un proyecto de sistema de diseno general, particularmente para Energia Renovable, que cubre sistematicamente todos los aspectos necesarios en su planeacion y puesta en practica , de tal manera que sus efectos son a la larga sustentables y cubren, asimismo todos los requerimientos de una difusion determinada. Esto es lo que han llamado {sup A}dministracion del Sistema{sup .} Esta metodologia de puesta en practica

  16. Database mining applied to central nervous system (CNS) activity.

    Science.gov (United States)

    Pintore, M; Taboureau, O; Ros, F; Chrétien, J R

    2001-04-01

    A data set of 389 compounds, active in the central nervous system (CNS) and divided into eight classes according to the receptor type, was extracted from the RBI database and analyzed by Self-Organizing Maps (SOM), also known as Kohonen Artificial Neural Networks. This method gives a 2D representation of the distribution of the compounds in the hyperspace derived from their molecular descriptors. As SOM belongs to the category of unsupervised techniques, it has to be combined with another method in order to generate classification models with predictive ability. The fuzzy clustering (FC) approach seems to be particularly suitable to delineate clusters in a rational way from SOM and to get an automatic objective map interpretation. Maps derived by SOM showed specific regions associated with a unique receptor type and zones in which two or more activity classes are nested. Then, the modeling ability of the proposed SOM/FC Hybrid System tools applied simultaneously to eight activity classes was validated after dividing the 389 compounds into a training set and a test set, including 259 and 130 molecules, respectively. The proper experimental activity class, among the eight possible ones, was predicted simultaneously and correctly for 81% of the test set compounds. PMID:11461760

  17. Modelling carbon cycle of agro-forest ecosystems in Lombardy (Italy

    Directory of Open Access Journals (Sweden)

    Colombo R

    2009-09-01

    Full Text Available In this paper we present a methodology for the estimation of Gross Primary Production (GPP, Net Primary Production (NPP and Net Ecosystem Production (NEP for the main agricultural and forest ecosystems of the Lombardia Region (Italy. The MOD17 model was parameterized according to the different agro-forestry ecosystems and applied at regional scale by using satellite data with a spatial resolution of 250m. The high spatial resolution along with fine classification agro-forestry ecosystems has allowed to accurately analyze the carbon budget of an extremely fragmented and complex environment such as the Lombardia Region. Modeling results showed the role of the forests in the carbon budget at regional scale and represent important information layer for the spatial analysis and for inferring the inter-annual variability of carbon sequestration due to impacts of extreme events and recent climate change (e.g., drought, heat wave, flooding, fires.

  18. Adaptive Robotic Systems Design in University of Applied Sciences

    Directory of Open Access Journals (Sweden)

    Gunsing Jos

    2016-01-01

    Full Text Available In the industry for highly specialized machine building (small series with high variety and high complexity and in healthcare a demand for adaptive robotics is rapidly coming up. Technically skilled people are not always available in sufficient numbers. A lot of know how with respect to the required technologies is available but successful adaptive robotic system designs are still rare. In our research at the university of applied sciences we incorporate new available technologies in our education courses by way of research projects; in these projects students will investigate the application possibilities of new technologies together with companies and teachers. Thus we are able to transfer knowledge to the students including an innovation oriented attitude and skills. Last years we developed several industrial binpicking applications for logistics and machining-factories with different types of 3D vision. Also force feedback gripping has been developed including slip sensing. Especially for healthcare robotics we developed a so-called twisted wire actuator, which is very compact in combination with an underactuated gripper, manufactured in one piece in polyurethane. We work both on modeling and testing the functions of these designs but we work also on complete demonstrator systems. Since the amount of disciplines involved in complex product and machine design increases rapidly we pay a lot of attention with respect to systems engineering methods. Apart from the classical engineering disciplines like mechanical, electrical, software and mechatronics engineering, especially for adaptive robotics more and more disciplines like industrial product design, communication … multimedia design and of course physics and even art are to be involved depending on the specific application to be designed. Design tools like V-model, agile/scrum and design-approaches to obtain the best set of requirements are being implemented in the engineering studies from

  19. Susceptibilidad del suelo a la degradación en parcelas con manejo agroforestal Quesungual en Nicaragua Susceptibility to soil degradation in plots under Quesungual agroforestry management in Nicaragua

    Directory of Open Access Journals (Sweden)

    Jellín del Carmen Pavón T

    2010-01-01

    Full Text Available Durante tres años se establecieron en un Andisol del municipio de Somotillo (Nicaragua los sistemas de usos de tierra: tradicional del productor (tala, quema, fertilización y siembra de maíz + fríjol; agroforestal Quesungual (SAQ (no quema, árboles nativos en regeneración natural y siembra de maíz + fríjol; residuos de cultivos (manejo de cobertura con residuos de cultivos; y testigo bosque secundario (tacotal de aproximadamente cinco años de edad no cultivado. Se hicieron muestreos de suelos a profundidades de 0-5, 5-10 y 10-20 cm para caracterización física y de fertilidad y estimación de la erosión hídrica por simulación. Los sistemas Quesungal y Residuos de Cultivo, mantuvieron la susceptibilidad del suelo a la erosión en niveles tan bajos como los del bosque natural secundario.In an andisol tt was placed for three years land uses systems like: farmer traditional (slash and burn, fertilization and sowing of bean and maiz; Quesungual Agroforestry System-SAQ (no burn, natural regeneration of native trees, bean and maiz sowing; crop residues as management cover, and a fi ve years secundary forest (tacotal as a control. It was considered soil samples at 0-5, 5-10 y 10-20 for physical and fertility characterization and field measurement of soil erosion by rain simulation. Quesungal and crop residues systems, remained soil erosión susceptibility at levels as low as the natural secondary forest.

  20. Gauge/gravity duality applied to condensed matter systems

    Energy Technology Data Exchange (ETDEWEB)

    Ammon, Martin Matthias

    2010-07-07

    DE024486693In the present thesis by means of the AdS/CFT correspondence phenomena of strongly coupled quantum critical systems are studied. Hereby the assumption developed 1997 by Maldacena puts four-dimensional N=4 supersymmetric Yang-Mills theory and type IIB supergravity in the five-dimensional anti-de Sitter space in relation. This assumption can be generalized in different ways. So on the gauge-theory side states with finite temperature and density can be considered or degrees of freedom added, which transform in the fundamental representation of the gauge group, the so-called flavor degrees of freedom. These deformations of the correspondence are applied in the present thesis in order to understand better strongly coupled systems in the neighbourhood of quantum-critical points. We approximate hereby the field theory at the quantum-critical point by N=4 supersymmetric Yang-Mills theory. The charge carriers of the system are introduced by supersymmetric flavor fields. For instance in the present thesis in the case of two flavor fields, which have the same mass, a chemical potential for the isospin is considered and the phase diagram studied. The isospin-chemical potential breaks hereby the non-Abelian part of the flavor symmetry SU(2) to U(1). If a critical value of the isospin-chemical potential is exceeded, so shows our calculation, that the strongly coupled system becomes unstable against fluctuations. A new thermodynamically favorized state is formed. This state breaks the residual U(1) flavor symmetry spontaneously and can therefore be considered as a superfluid. If U(1) is gauged, by this way a superconductor is obtained. The AC conductivity goes in the superconducting phase for small frequencies to zero. The DC conductivity however is infinite. Furthermore we calculate the Fermi surface in the superconducting phase. Furthermore a holographic method for the calculation of the DC conductivity in arbitrarily constant electric and magnetic fields is further

  1. Gauge/gravity duality applied to condensed matter systems

    International Nuclear Information System (INIS)

    DE024486693In the present thesis by means of the AdS/CFT correspondence phenomena of strongly coupled quantum critical systems are studied. Hereby the assumption developed 1997 by Maldacena puts four-dimensional N=4 supersymmetric Yang-Mills theory and type IIB supergravity in the five-dimensional anti-de Sitter space in relation. This assumption can be generalized in different ways. So on the gauge-theory side states with finite temperature and density can be considered or degrees of freedom added, which transform in the fundamental representation of the gauge group, the so-called flavor degrees of freedom. These deformations of the correspondence are applied in the present thesis in order to understand better strongly coupled systems in the neighbourhood of quantum-critical points. We approximate hereby the field theory at the quantum-critical point by N=4 supersymmetric Yang-Mills theory. The charge carriers of the system are introduced by supersymmetric flavor fields. For instance in the present thesis in the case of two flavor fields, which have the same mass, a chemical potential for the isospin is considered and the phase diagram studied. The isospin-chemical potential breaks hereby the non-Abelian part of the flavor symmetry SU(2) to U(1). If a critical value of the isospin-chemical potential is exceeded, so shows our calculation, that the strongly coupled system becomes unstable against fluctuations. A new thermodynamically favorized state is formed. This state breaks the residual U(1) flavor symmetry spontaneously and can therefore be considered as a superfluid. If U(1) is gauged, by this way a superconductor is obtained. The AC conductivity goes in the superconducting phase for small frequencies to zero. The DC conductivity however is infinite. Furthermore we calculate the Fermi surface in the superconducting phase. Furthermore a holographic method for the calculation of the DC conductivity in arbitrarily constant electric and magnetic fields is further

  2. Multisphere system neutron spectrometry applied to dosimetry for the personnel

    International Nuclear Information System (INIS)

    Neutron dosimetry is a necessity that must be dealt with in order to ensure efficient monitoring of all personnel regarding radiology safety. Dosimetric variables are difficult to measure for they are dependent on complex functions evolving with the energy of neutrons, which forces us to determine their energetic distribution. We have chosen to use the multisphere system associated to an unfolding code in order to perform neutron spectrometry, our purpose being to determine these dosimetric variables. The initial stage consists in modifying a research code, the code SOHO, in order to adapt it to our needs. The resulting new version was subsequently tested and proven successful by means of computerized simulations. Afterwards, we used reference dosimetric and spectral beams to confirm the position results previously obtained. At the time of this test, the code SOHO yielded results coherent with the theoretical values, and even allowed the quantity of radiation diffused by the laboratory structures to be estimated. The final part of this study consists in applying the previously perfected technique to authentic situations. The results thus obtained are compared to those obtained by conventional methods in order to reveal the interest of neutron spectrometry used for dosimetry of the personnel

  3. Sistema agroforestal de yuca y guanandi (Calophyllum braziliense) en el Valle de Paraíba, Estado de São Paulo, Brasil

    OpenAIRE

    Devide, Antonio; De Castro, Cristina; Ribeiro, Raul de Lucena Duarte; Abboud, Antônio Carlos de Souza; Pereira, Marcos Gervasio; Assumpção, Patrick

    2013-01-01

    La eliminación de vegetación ribereña y un uso intenso de terrazas en el Valle del Río Paraíba do Sul, Estado de São Paulo, Brasil, han causado la degradación de la tierra y la lixiviación de nutrientes y sedimentos por la lluvia. En el año 2008, se introdujo el guanandi – Calophyllum braziliense (3x2m); árbol nativo resistente a inundaciones y productor de madera fina; después del corte de eucaliptos en las terrazas. En 2011 ha comenzado a conversión de agroforestería con un experimento en b...

  4. Clumped Isotopes Applied to Carbonate Diagenesis and High Temperature Systems

    Science.gov (United States)

    John, C. M.; Jourdan, A.; Kluge, T.; Dale, A.; Davis, S.; Vandeginste, V.

    2012-12-01

    The field of clumped isotopes is concerned with the state of ordering of natural substances and aims at constraining the abundance of 18O-13C bonds (i.e. a 'clump') within the lattice of carbonate minerals. Measuring the difference between the abundance of 18O-13C bonds in a sample relative to a stochastic distribution of isotopologues offers a single-phase paleothermometer applicable to all carbonate phases. Most of the applications of clumped isotopes to date have been in the field of paleoclimate, but applications to diagenetic systems are becoming more common. The independence of clumped isotopes from the isotopic composition of the diagenetic fluid reduces ambiguities when interpreting paragenesis, fluid flow history, and thermal history of basins. This presentation will synthesize the results of several projects within our group that collectively aim at understanding and applying clumped isotopes to diagenetic systems. One example of project including diagenesis and clumped isotope is a study of low-temperature diagenetic calcite in a salt dome in Oman (Jebel Madar). Jebel Madar is an ideal case study as large fracture-related crystals can be sampled for both clumped isotopes and fluid inclusions. Results show a good match between single-phase fluid inclusions suggesting temperature of precipitations below 90-50°C, and clumped isotope data measured on the same crystals. The low-temperature study reveals the history of gradual cooling and progressive mixing between two sources of diagenetic fluids in the fracture of Jebel Madar, and highlights the potential of clumped isotope for diagenetic studies. However, applications at high-temperatures are currently more challenging because of the lack of empirical calibrations above 50°C. A second project is thus focused on a series of high-temperature lab precipitation experiments for calibrations at high temperature, while a third project explores applicability of clumped isotopes to cemented siliciclastic units

  5. Memory function formalism applied to electronic transport in disordered systems

    International Nuclear Information System (INIS)

    Memory function formalism is briefly reviewed and applied to electronic transport using the projection operator technique. The resistivity of a disordered 2-D electron gas under strong magnetic field is obtained in terms of force-force correlation function. (Author)

  6. Improved self-management of datacenter systems applying machine learning

    OpenAIRE

    Berral García, Josep Lluís

    2013-01-01

    Autonomic Computing is a Computer Science and Technologies research area, originated during mid 2000's. It focuses on optimization and improvement of complex distributed computing systems through self-control and self-management. As distributed computing systems grow in complexity, like multi-datacenter systems in cloud computing, the system operators and architects need more help to understand, design and optimize manually these systems, even more when these systems are distributed along the...

  7. Experimental research on LiBr refrigeration - Heat pump system applied in CCHP system

    International Nuclear Information System (INIS)

    A new heat recovery technique for a LiBr refrigeration-heat pump system applied in CCHP(Combined Cooling, Heating and Power system) system is proposed in this paper. The system can recover the heat of the LiBr refrigeration cooling water to heat the demineralized water of the boiler. Experimental research on the operating characteristics of the compound system is carried out and the obtained conclusions are as follows: The LiBr refrigeration-heat pump system is able to perform stably and flexibly. The heat pump system has a relative large coefficient of performance (COPP) which can be as high as 6.13. When the outlet temperature of the demineralized water is 67.8 oC, the CCHP system brings 26.6% decrease in primary energy rate consumption compared with the combined heat and power production system (CHP) plus electricity-driven refrigeration. It is suggested that heat pumps should be used in CCHP system to heat the demineralized water of the boiler by recovering the exhaust heat of the LiBr refrigeration system. - Highlights: → LiBr refrigeration-heat pump system applied in CCHP system is proposed. → This system can recover the heat of the LiBr refrigeration cooling water to heat the demineralized water of the boiler. → Using heat pump to recover exhaust heat can increase the energy efficiency of the whole CCHP.

  8. Computers and advanced technology applied to uranium borehole logging systems

    International Nuclear Information System (INIS)

    A minicomputer has been employed in a uranium borehole logging system to provide digital data acquisition, real time processing for log output, magnetic tape recording, and on-site log analysis procesing for two nuclear logging techniques: spectral gamma ray and prompt fission neutron. A downhole digital data acquisition system (BDATS) is being built. It can acquire and transmit borehole instrument signals without present limitations and degradation experienced in the analog transmisison mode, which is due to the logging system's electrical cable and is present on all logging system cables. The BDATS can replace the data acquisition instrumentation at the surface. A fiber optic logging cable is being developed that can directly replace the electrician conductor logging cable. This should improve the data transmission capabilities of logging systems at least ten-fold when coupled with digital data transmission systems and minicomputer based logging systems. A feasibility study, prototype cable and light transducer system has been completed. 6 refs

  9. Applying Galois compliance for data analysis in information systems

    Directory of Open Access Journals (Sweden)

    Kozlov Sergey

    2016-03-01

    Full Text Available The article deals with the data analysis in information systems. The author discloses the possibility of using Galois compliance to identify the characteristics of the information system structure. The author reveals the specificity of the application of Galois compliance for the analysis of information system content with the use of invariants of graph theory. Aspects of introduction of mathematical apparatus of Galois compliance for research of interrelations between elements of the adaptive training information system of individual testing are analyzed.

  10. System analysis applied for controlling the quality of metallurgical rollers

    Directory of Open Access Journals (Sweden)

    L. Wojtynek

    2010-01-01

    Full Text Available In the work, the system analysis in the foundry where the quality management system has been implemented was described. The generalized model of the foundry’s production system was presented taking the company’s surrounding and process attitude into account.

  11. Applying Technology Ranking and Systems Engineering in Advanced Life Support

    Science.gov (United States)

    Jones, Harry; Luna, Bernadette (Technical Monitor)

    2000-01-01

    According to the Advanced Life Support (ALS) Program Plan, the Systems Modeling and Analysis Project (SMAP) has two important tasks: 1) prioritizing investments in ALS Research and Technology Development (R&TD), and 2) guiding the evolution of ALS systems. Investments could be prioritized simply by independently ranking different technologies, but we should also consider a technology's impact on system design. Guiding future ALS systems will require SMAP to consider many aspects of systems engineering. R&TD investments can be prioritized using familiar methods for ranking technology. The first step is gathering data on technology performance, safety, readiness level, and cost. Then the technologies are ranked using metrics or by decision analysis using net present economic value. The R&TD portfolio can be optimized to provide the maximum expected payoff in the face of uncertain future events. But more is needed. The optimum ALS system can not be designed simply by selecting the best technology for each predefined subsystem. Incorporating a new technology, such as food plants, can change the specifications of other subsystems, such as air regeneration. Systems must be designed top-down starting from system objectives, not bottom-up from selected technologies. The familiar top-down systems engineering process includes defining mission objectives, mission design, system specification, technology analysis, preliminary design, and detail design. Technology selection is only one part of systems analysis and engineering, and it is strongly related to the subsystem definitions. ALS systems should be designed using top-down systems engineering. R&TD technology selection should consider how the technology affects ALS system design. Technology ranking is useful but it is only a small part of systems engineering.

  12. Reliability analysis of reactor systems by applying probability method

    International Nuclear Information System (INIS)

    Probability method was chosen for analysing the reactor system reliability is considered realistic since it is based on verified experimental data. In fact this is a statistical method. The probability method developed takes into account the probability distribution of permitted levels of relevant parameters and their particular influence on the reliability of the system as a whole. The proposed method is rather general, and was used for problem of thermal safety analysis of reactor system. This analysis enables to analyze basic properties of the system under different operation conditions, expressed in form of probability they show the reliability of the system on the whole as well as reliability of each component

  13. Virtual Reality Technology Applied in Food Teaching System

    OpenAIRE

    Xu Zhili

    2015-01-01

    The study attempts to apply the virtual reality technology in food processing teaching, to analyze the algorithm in food processing, to improve the teaching quality and efficiency in order to save manpower and material resources. The development of virtual reality technology opens a new road to the progress of the food industry continuously, the development of virtual technology provides the technical support for efficient food processing methods, In the food processing teaching process, it c...

  14. Applying principles of health system strengthening to eye care

    OpenAIRE

    Karl Blanchet; Daksha Patel

    2012-01-01

    Understanding Health systems have now become the priority focus of researchers and policy makers, who have progressively moved away from a project-centred perspectives. The new tendency is to facilitate a convergence between health system developers and disease-specific programme managers in terms of both thinking and action, and to reconcile both approaches: one focusing on integrated health systems and improving the health status of the population and the other aiming at improving access to...

  15. Performance Evaluation of Data Compression Systems Applied to Satellite Imagery

    OpenAIRE

    Faria, Lilian N.; Fonseca, Leila M. G.; Costa, Max H. M.

    2012-01-01

    Onboard image compression systems reduce the data storage and downlink bandwidth requirements in space missions. This paper presents an overview and evaluation of some compression algorithms suitable for remote sensing applications. Prediction-based compression systems, such as DPCM and JPEG-LS, and transform-based compression systems, such as CCSDS-IDC and JPEG-XR, were tested over twenty multispectral (5-band) images from CCD optical sensor of the CBERS-2B satellite. Performance evaluation ...

  16. Artificial Intelligence and Systems Theory: Applied to Cooperative Robots

    OpenAIRE

    Lima, Pedro U.; Custodio, Luis M. M.

    2004-01-01

    This paper describes an approach to the design of a population of cooperative robots based on concepts borrowed from Systems Theory and Artificial Intelligence. The research has been developed under the SocRob project, carried out by the Intelligent Systems Laboratory at the Institute for Systems and Robotics - Instituto Superior T?cnico (ISR/IST) in Lisbon. The acronym of the project stands both for "Society of Robots" and "Soccer Robots", the case study where we are test...

  17. Applying Operating System Principles to SDN Controller Design

    OpenAIRE

    Monaco, Matthew; Michel, Oliver; Keller, Eric

    2015-01-01

    Rather than creating yet another network controller which provides a framework in a specific (potentially new) programming language and runs as a monolithic application, in this paper we extend an existing operating system and leverage its software ecosystem in order to serve as a practical SDN controller. This paper introduces yanc, a controller platform for software-defined networks which exposes the network configuration and state as a file system, enabling user and system applications to ...

  18. VHDL basics applied design by SIPAC qualification system

    International Nuclear Information System (INIS)

    This book has six chapters, which are about Flowrian of SIPAC qualification system including internet CAD system and remote server service, logic circuit on design and qualification of device such as gate circuit, multiplex and decoder, order logic circuit with D type flip-flop design and qualification and Rom and RAM's design and qualification, finite state machine such as odd checker, sequence detector, test clock generator and traffic light controller, design and qualification about data path, design of application circuit. It has two appendixes on install and the way to use SIPAC qualification system and remote service for SIPAC qualification system.

  19. STAIRS: A Storage and Retrieval System Applied in Online Cataloging.

    Science.gov (United States)

    Poor, William

    1982-01-01

    Describes the use of IBM's Storage and Information Retrieval System (STAIRS) in the development of an online catalog for the Business and Technical Library of the Cummins Engine Company. The functions, advantages, and disadvantages of the system are outlined. A reference list and three sample searches are attached. (JL)

  20. Applying an Activity System to Online Collaborative Group Work Analysis

    Science.gov (United States)

    Choi, Hyungshin; Kang, Myunghee

    2010-01-01

    This study determines whether an activity system provides a systematic framework to analyse collaborative group work. Using an activity system as a unit of analysis, the research examined learner behaviours, conflicting factors and facilitating factors while students engaged in collaborative work via asynchronous computer-mediated communication.…

  1. Modular Modelling and Simulation Approach - Applied to Refrigeration Systems

    DEFF Research Database (Denmark)

    Sørensen, Kresten Kjær; Stoustrup, Jakob

    2008-01-01

    This paper presents an approach to modelling and simulation of the thermal dynamics of a refrigeration system, specifically a reefer container. A modular approach is used and the objective is to increase the speed and flexibility of the developed simulation environment. The refrigeration system is...

  2. Power electronics applied to industrial systems and transports

    CERN Document Server

    Patin, Nicolas

    2015-01-01

    Power electronics is based on the switching operating mode of semiconductor components. On this basis, the concepts of type (voltage or current) and reversibility of interconnected sources make it possible to apply a methodology for the synthesis of various types of converters. This book also focuses on the importance of packaging by reviewing the electrical representation of components’ thermal models and the currently available electronics’ cooling technologies. Modeling is discussed, as well as different technological aspects used in the engineering design of an electronic power converter, useful for obtaining satisfactory performance and reliability.

  3. Apply Functional Modelling to Consequence Analysis in Supervision Systems

    DEFF Research Database (Denmark)

    Zhang, Xinxin; Lind, Morten; Gola, Giulio; Ravn, Ole

    2013-01-01

    causal relations between functions and goals. A rule base system can be developed to trace the causal relations and perform consequence propagations. This paper will illustrate how to use MFM for consequence reasoning by using rule base technology and describe the challenges for integrating functional...... consequence analysis to practical or online applications in supervision systems. It will also suggest a multiagent solution as the integration architecture for developing tools to facilitate the utilization results of functional consequence analysis. Finally a prototype of the multiagent reasoning system will...

  4. Aircraft Electric Propulsion Systems Applied Research at NASA

    Science.gov (United States)

    Clarke, Sean

    2015-01-01

    Researchers at NASA are investigating the potential for electric propulsion systems to revolutionize the design of aircraft from the small-scale general aviation sector to commuter and transport-class vehicles. Electric propulsion provides new degrees of design freedom that may enable opportunities for tightly coupled design and optimization of the propulsion system with the aircraft structure and control systems. This could lead to extraordinary reductions in ownership and operating costs, greenhouse gas emissions, and noise annoyance levels. We are building testbeds, high-fidelity aircraft simulations, and the first highly distributed electric inhabited flight test vehicle to begin to explore these opportunities.

  5. Applying New Network Security Technologies to SCADA Systems.

    Energy Technology Data Exchange (ETDEWEB)

    Hurd, Steven A.; Stamp, Jason E. [Sandia National Laboratories, Albuquerque, NM; Duggan, David P. [Sandia National Laboratories, Albuquerque, NM; Chavez, Adrian R. [Sandia National Laboratories, Albuquerque, NM

    2006-11-01

    Supervisory Control and Data Acquisition (SCADA) systems for automation are very important for critical infrastructure and manufacturing operations. They have been implemented to work in a number of physical environments using a variety of hardware, software, networking protocols, and communications technologies, often before security issues became of paramount concern. To offer solutions to security shortcomings in the short/medium term, this project was to identify technologies used to secure %22traditional%22 IT networks and systems, and then assess their efficacy with respect to SCADA systems. These proposed solutions must be relatively simple to implement, reliable, and acceptable to SCADA owners and operators. 4This page intentionally left blank.

  6. Applying Titius-Bode's Law on Exoplanetry Systems

    CERN Document Server

    Altaie, M B; Al-Sharif, A I

    2016-01-01

    We report the application of Titius-Bode's law on 43 exoplanetary systems containing four or more planets. Due to the fact that most of these systems have their planets located within compact regions extending for less than the semi-major axis of Mercury we found the necessity to scale down the Titius-Bode law in each case. In this short article we present sample calculations for three systems out of the whole set. Results show that all systems studied are verifying the applicability of the law with high accuracy. Consequently our investigation verifies practically the scale invariance of Titius-Bode law. The results of this study buildup the confidence in predicting positions of the exoplanets according to Titius-Bode's law besides enabling diagnosing possible reasons of deviations.

  7. Context-Aware System Applied in Industrial Assembly Environment

    Directory of Open Access Journals (Sweden)

    Tomislav Stipancic

    2012-12-01

    Full Text Available The objective of this paper is to present an ongoing development of a context‐aware system used within industrial environments. The core of the system is so‐called Cognitive Model for Robot Group Control. This model is based on well‐known concepts of Ubiquitous Computing, and is used to control robot behaviours in specially designed industrial environments. By using sensors integrated within the environment, the system is able to track and analyse changes, and update its informational buffer appropriately. Based on freshly collected information, the Model is able to provide a transformation of high‐level contextual information to lower‐level information that is much more suitable and understandable for technical systems. The Model uses semantically defined knowledge to define domain of interest, and Bayesian Network reasoning to deal with the uncertain events and ambiguity scenarios that characterize our naturally unstructured world.

  8. Can casemix-systems be applied in Danish primary care?

    DEFF Research Database (Denmark)

    Halling, Anders; Kristensen, Troels

    Data", which covers the collection, storage, analysis, processing and interpretation of large amounts of data can via a casemix system provide new and insightful information about the morbidity burden of populations in terms of co-morbidity in addition to index conditions/multi-morbidity and related......Background: New technology in terms of IT systems, better data infrastructure and improved registrations of health data provide new opportunities for health care systems to improve the care experience of individual patients, improve public health and reduce healthcare costs. Application of "Big...... resource consumption. . Aim: The objective of this study was to conduct a preliminary analysis of the usefulness of the ACG casemix system in Denmark. This includes presenting the results for a region of Denmark and assessment of the usefulness and quality of the results. Methods and Data: This cross...

  9. Physiology for engineers applying engineering methods to physiological systems

    CERN Document Server

    Chappell, Michael

    2016-01-01

    This book provides an introduction to qualitative and quantitative aspects of human physiology. It looks at biological and physiological processes and phenomena, including a selection of mathematical models, showing how physiological problems can be mathematically formulated and studied. It also illustrates how a wide range of engineering and physics topics, including electronics, fluid dynamics, solid mechanics and control theory can be used to describe and understand physiological processes and systems. Throughout the text there are introductions to measuring and quantifying physiological processes using both signal and imaging technologies. Physiology for Engineers describes the basic structure and models of cellular systems, the structure and function of the cardiovascular system, the electrical and mechanical activity of the heart and provides an overview of the structure and function of the respiratory and nervous systems. It also includes an introduction to the basic concepts and applications of reacti...

  10. Applied estimation for hybrid dynamical systems using perceptional information

    Science.gov (United States)

    Plotnik, Aaron M.

    This dissertation uses the motivating example of robotic tracking of mobile deep ocean animals to present innovations in robotic perception and estimation for hybrid dynamical systems. An approach to estimation for hybrid systems is presented that utilizes uncertain perceptional information about the system's mode to improve tracking of its mode and continuous states. This results in significant improvements in situations where previously reported methods of estimation for hybrid systems perform poorly due to poor distinguishability of the modes. The specific application that motivates this research is an automatic underwater robotic observation system that follows and films individual deep ocean animals. A first version of such a system has been developed jointly by the Stanford Aerospace Robotics Laboratory and Monterey Bay Aquarium Research Institute (MBARI). This robotic observation system is successfully fielded on MBARI's ROVs, but agile specimens often evade the system. When a human ROV pilot performs this task, one advantage that he has over the robotic observation system in these situations is the ability to use visual perceptional information about the target, immediately recognizing any changes in the specimen's behavior mode. With the approach of the human pilot in mind, a new version of the robotic observation system is proposed which is extended to (a) derive perceptional information (visual cues) about the behavior mode of the tracked specimen, and (b) merge this dissimilar, discrete and uncertain information with more traditional continuous noisy sensor data by extending existing algorithms for hybrid estimation. These performance enhancements are enabled by integrating techniques in hybrid estimation, computer vision and machine learning. First, real-time computer vision and classification algorithms extract a visual observation of the target's behavior mode. Existing hybrid estimation algorithms are extended to admit this uncertain but discrete

  11. System Analysis Applying to Talent Resource Development Research

    Institute of Scientific and Technical Information of China (English)

    WANG Peng-tao; ZHENG Gang

    2001-01-01

    In the development research of talent resource, the most important of talent resource forecast and optimization is the structure of talent resource, requirement number and talent quality. The article establish factor reconstruction analysis forecast and talent quality model on the method: system reconstruction analysis and ensure most effective factor level in system, which is presented by G. J. Klirti, B.Jonesque. And performing dynamic analysis of example ration.

  12. LDS3: applying digital preservation principals to linked data systems

    OpenAIRE

    Tarrant, David; Carr, Leslie

    2012-01-01

    Data publishing using semantic web and linked data techniques enables the sharing of detailed information. Importantly this information is shared using common standards and vocabularies to enable simple re-use. In the digital preservation community, an increasing number of systems are adopting linked data techniques for sharing data, including the PRONOM and UDFR technical registries. In many systems, only current information is being shared. Further, this information is not being described w...

  13. New electrohydraulic control system applied to steam turbines

    International Nuclear Information System (INIS)

    A new electrohydraulic control system (EHC) for steam turbines has been developed on the basis of rich operational experience and new requirements on control systems. Its reliability and maintenance have been greatly improved by the use of standardized module circuits. Various new control methods have also been added to meet customers' requirements. A full-size proto-type EHC cabinet has been tested in the EHC test shop in Toshiba, demonstrating its superior performance. (author)

  14. Lessons from applying experimentation in software engineering prediction systems

    OpenAIRE

    Afzal, Wasif

    2008-01-01

    Within software engineering prediction systems, experiments are undertaken primarliy to investigate relationships and to measure/compare models' accuracy. This paper discusses our experience and presents useful lessons/guidelines in experimenting with software engineering prediction systems. For this purpose, we use a typical software engineering experimentation process as a baseline. We found that the typical software engineering experimentation process in software engineering is suppor...

  15. Applied Space Systems Engineering. Chapter 17; Manage Technical Data

    Science.gov (United States)

    Kent, Peter

    2008-01-01

    Effective space systems engineering (SSE) is conducted in a fully electronic manner. Competitive hardware, software, and system designs are created in a totally digital environment that enables rapid product design and manufacturing cycles, as well as a multitude of techniques such as modeling, simulation, and lean manufacturing that significantly reduce the lifecycle cost of systems. Because the SSE lifecycle depends on the digital environment, managing the enormous volumes of technical data needed to describe, build, deploy, and operate systems is a critical factor in the success of a project. This chapter presents the key aspects of Technical Data Management (TDM) within the SSE process. It is written from the perspective of the System Engineer tasked with establishing the TDM process and infrastructure for a major project. Additional perspectives are reflected from the point of view of the engineers on the project who work within the digital engineering environment established by the TDM toolset and infrastructure, and from the point of view of the contactors who interface via the TDM infrastructure. Table 17.1 lists the TDM process as it relates to SSE.

  16. Applied patent RFID systems for building reacting HEPA air ventilation system in hospital operation rooms.

    Science.gov (United States)

    Lin, Jesun; Pai, Jar-Yuan; Chen, Chih-Cheng

    2012-12-01

    RFID technology, an automatic identification and data capture technology to provide identification, tracing, security and so on, was widely applied to healthcare industry in these years. Employing HEPA ventilation system in hospital is a way to ensure healthful indoor air quality to protect patients and healthcare workers against hospital-acquired infections. However, the system consumes lots of electricity which cost a lot. This study aims to apply the RFID technology to offer a unique medical staff and patient identification, and reacting HEPA air ventilation system in order to reduce the cost, save energy and prevent the prevalence of hospital-acquired infection. The system, reacting HEPA air ventilation system, contains RFID tags (for medical staffs and patients), sensor, and reacting system which receives the information regarding the number of medical staff and the status of the surgery, and controls the air volume of the HEPA air ventilation system accordingly. A pilot program was carried out in a unit of operation rooms of a medical center with 1,500 beds located in central Taiwan from Jan to Aug 2010. The results found the air ventilation system was able to function much more efficiently with less energy consumed. Furthermore, the indoor air quality could still keep qualified and hospital-acquired infection or other occupational diseases could be prevented. PMID:22081235

  17. Multi-agent cooperative systems applied to precision applications

    International Nuclear Information System (INIS)

    Regulatory agencies are imposing limits and constraints to protect the operator and/or the environment. While generally necessary, these controls also tend to increase cost and decrease efficiency and productivity. Intelligent computer systems can be made to perform these hazardous tasks with greater efficiency and precision without danger to the operators. The Idaho national Engineering and Environmental Laboratory and the Center for Self-Organizing and Intelligent Systems at Utah State University have developed a series of autonomous all-terrain multi-agent systems capable of performing automated tasks within hazardous environments. This paper discusses the development and application of cooperative small-scale and large-scale robots for use in various activities associated with radiologically contaminated areas, prescription farming, and unexploded ordinances

  18. Energetic Macroscopic Representation Applied To An Electrical Urban Transport System

    Directory of Open Access Journals (Sweden)

    Claudia POPESCU

    2002-12-01

    Full Text Available An energetic description of the electric transport urban system ASTRAIK 415T is proposed according to a specific formalism. This is used to simulate the trolleybus system, equipped with a chopper and a direct current series motor. DC series motor is still used for trolleybus and metro, driven by a GTO or IGBT chopper µC-controlled, which allows the implementation of command algorithms. From this synthetically representation a complete model of the electromechanical system was implemented using the Matlab-Simulink simulation environment. A control structure was deduced through model inversion. This will allow the study of the transient phenomena and the implementation of different command laws taking into account the minimum energy losses

  19. Risk Analysis of the applied RFID system : Project Stolpen

    OpenAIRE

    Grunzke, Richard

    2007-01-01

    This thesis will be a risk analysis of a RFID-system for a logistical application. The system works as follows: Around Karlstad in Sweden there are three new weighing machines for lorries. The load weight will be measured for the police to control overweight and for logistical reasons such as issuing invoices and optimising the supply chain. The lorries do not have to stop to be weighed. They have to drive slowly over the weighing machine, so the loss of time is minimal. The lorries will be i...

  20. Robust sliding mode control applied to double Inverted pendulum system

    International Nuclear Information System (INIS)

    A three hierarchical sliding mode control is presented for a class of an underactuated system which can overcome the mismatched perturbations. The considered underactuated system is a double inverted pendulum (DIP), can be modeled by three subsystems. Such structure allows the construction of several designs of hierarchies for the controller. For all hierarchical designs, the asymptotic stability of every layer sliding mode surface and the sliding mode surface of subsystems are proved theoretically by Barbalat's lemma. Simulation results show the validity of these methods.

  1. Dynamic Control Applied to a Laboratory Antilock Braking System

    Directory of Open Access Journals (Sweden)

    Cuauhtémoc Acosta Lúa

    2015-01-01

    Full Text Available The control of an antilock braking system is a difficult problem due to the existence of nonlinear dynamics and uncertainties of its characteristics. To overcome these issues, in this work, a dynamic nonlinear controller is proposed, based on a nonlinear observer. To evaluate its performance, this controller has been implemented on an ABS Laboratory setup, representing a quarter car model. The nonlinear observer reconstructs some of the state variables of the setup, assumed not measurable, to establish a fair benchmark for an ABS system of a real automobile. The dynamic controller ensures exponential convergence of the state estimation, as well as robustness with respect to parameter variations.

  2. Error behaviour of multistep methods applied to unstable differential systems

    Science.gov (United States)

    Brown, R. L.

    1978-01-01

    The problem of modelling a dynamic system described by a system of ordinary differential equations which has unstable components for limited periods of time is discussed. It is shown that the global error in a multistep numerical method is the solution to a difference equation initial value problem, and the approximate solution is given for several popular multistep integration formulae. Inspection of the solution leads to the formulation of four criteria for integrators appropriate to unstable problems. A sample problem is solved numerically using three popular formulae and two different stepsizes to illustrate the appropriateness of the criteria.

  3. Applying UML and MDA to Real Systems Design

    CERN Document Server

    Oliver, Ian

    2011-01-01

    Traditionally system design has been made from a black box/functionality only perspective which forces the developer to concentrate on how the functionality can be decomposed and recomposed into so called components. While this technique is well established and well known it does suffer fromsome drawbacks; namely that the systems produced can often be forced into certain, incompatible architectures, difficult to maintain or reuse and the code itself difficult to debug. Now that ideas such as the OMG's Model Based Architecture (MDA) or Model Based Engineering (MBE) and the ubiquitous modelling language UML are being used (allegedly) and desired we face a number of challenges to existing techniques.

  4. Applying Distributed Object Technology to Distributed Embedded Control Systems

    DEFF Research Database (Denmark)

    Jørgensen, Bo Nørregaard; Dalgaard, Lars

    2012-01-01

    In this paper, we describe our Java RMI inspired Object Request Broker architecture MicroRMI for use with networked embedded devices. MicroRMI relieves the software developer from the tedious and error-prone job of writing communication protocols for interacting with such embedded devices. Micro...... developing control systems for distributed embedded platforms possessing severe resource restrictions....

  5. Fuzzy control applied to nuclear power plant pressurizer system

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Mauro V.; Almeida, Jose C.S., E-mail: mvitor@ien.gov.b, E-mail: jcsa@ien.gov.b [Instituto de Engenharia Nuclear (IEN/CNEN-RJ), Rio de Janeiro, RJ (Brazil)

    2011-07-01

    In a pressurized water reactor (PWR) nuclear power plants (NPPs) the pressure control in the primary loop is very important for keeping the reactor in a safety condition and improve the generation process efficiency. The main component responsible for this task is the pressurizer. The pressurizer pressure control system (PPCS) utilizes heaters and spray valves to maintain the pressure within an operating band during steady state conditions, and limits the pressure changes, during transient conditions. Relief and safety valves provide overpressure protection for the reactor coolant system (RCS) to ensure system integrity. Various protective reactor trips are generated if the system parameters exceed safe bounds. Historically, a proportional-integral derivative (PID) controller is used in PWRs to keep the pressure in the set point, during those operation conditions. The purpose of this study has two main goals: first is to develop a pressurizer model based on artificial neural networks (ANNs); second is to develop a fuzzy controller for the PWR pressurizer pressure, and compare its performance with the P controller. Data from a simulator PWR plant was used to test the ANN and the controllers as well. The reference simulator is a Westinghouse 3-loop PWR plant with a total thermal output of 2785 MWth. The simulation results show that the pressurizer ANN model response are in reasonable agreement with the simulated power plant, and the fuzzy controller built in this study has better performance compared to the P controller. (author)

  6. 40 CFR 63.8030 - What requirements apply to my heat exchange systems?

    Science.gov (United States)

    2010-07-01

    ... apply to my heat exchange systems? (a) You must comply with the requirements specified in Table 6 to this subpart that apply to your heat exchange systems, except as specified in paragraphs (b) through (e... 40 Protection of Environment 13 2010-07-01 2010-07-01 false What requirements apply to my...

  7. 40 CFR 63.1083 - Does this subpart apply to my heat exchange system?

    Science.gov (United States)

    2010-07-01

    ... CATEGORIES (CONTINUED) National Emission Standards for Ethylene Manufacturing Process Units: Heat Exchange Systems and Waste Operations Applicability for Heat Exchange Systems § 63.1083 Does this subpart apply to my heat exchange system? The provisions of this subpart apply to your heat exchange system if you...

  8. Advanced Drug Delivery Systems - a Synthetic and Biological Applied Evaluation

    DEFF Research Database (Denmark)

    Bjerg, Lise Nørkjær

    Specific delivery of drugs to diseased sites in the body is a major topic in the development of drug delivery system today. Especially, the field of cancer treatment needs improved drug delivery systems as the strong dose-limiting side effects of chemotherapy today often present a barrier for an...... unloading of the encapsulated drug have been tried optimized in a variety of ways. Many propose the use of small molecules, such as vitamins and peptides, for active targeting of the liposomes to overexpressed receptors on the cancerous tissue. Once located close to the diseased site a trigger mechanism for...... function as the targeting moiety on the surface of the liposomes. Several examples of synthetic procedures known from the literature are presented. The chapter is completed with a study covering the conjugation efficiencies of a variety of chemical functionalities. Large differences are revealed between...

  9. Applied Bounded Model Checking for Interlocking System Designs

    DEFF Research Database (Denmark)

    Haxthausen, Anne Elisabeth; Peleska, Jan; Pinger, Ralf

    2013-01-01

    In this article the verification and validation of interlocking systems is investigated. Reviewing both geographical and route-related interlocking, the verification objectives can be structured from a perspective of computer science into (1) verification of static semantics, and (2) verification...... of behavioural (operational) semantics. The former checks that the plant model – that is, the software components reflecting the physical components of the interlocking system – has been set up in an adequate way. The latter investigates trains moving through the network, with the objective to uncover potential...... safety violations. From a formal methods perspective, these verification objectives can be approached by theorem proving, global, or bounded model checking. This article explains the techniques for application of bounded model checking techniques, and discusses their advantages in comparison...

  10. Applied Bounded Model Checking for Interlocking System Designs

    DEFF Research Database (Denmark)

    Haxthausen, Anne Elisabeth; Peleska, Jan; Pinger, Ralf

    2014-01-01

    In this paper the verification and validation of interlocking systems is investigated. Reviewing both geographical and route-related interlocking, the verification objectives can be structured from a perspective of computer science into (1) verification of static semantics, and (2) verification of...... behavioural (operational) semantics. The former checks that the plant model – that is, the software components reflecting the physical components of the interlocking system – has been set up in an adequate way. The latter investigates trains moving through the network, with the objective to uncover potential...... safety violations. From a formal methods perspective, these verification objectives can be approached by theorem proving, global, or bounded model checking. This paper explains the techniques for application of bounded model checking techniques, and discusses their advantages in comparison to the...

  11. Applying twisted boundary conditions for few-body nuclear systems

    Science.gov (United States)

    Körber, Christopher; Luu, Thomas

    2016-05-01

    We describe and implement twisted boundary conditions for the deuteron and triton systems within finite volumes using the nuclear lattice EFT formalism. We investigate the finite-volume dependence of these systems with different twist angles. We demonstrate how various finite-volume information can be used to improve calculations of binding energies in such a framework. Our results suggests that with appropriate twisting of boundaries, infinite-volume binding energies can be reliably extracted from calculations using modest volume sizes with cubic length L ≈8 -14 fm. Of particular importance is our derivation and numerical verification of three-body analogs of "i-periodic" twist angles that eliminate the leading-order finite-volume effects to the three-body binding energy.

  12. Applying Twisted Boundary Conditions for Few-body Nuclear Systems

    CERN Document Server

    Körber, Christopher

    2015-01-01

    We describe and implement twisted boundary conditions for the deuteron and triton systems within finite-volumes using the nuclear lattice EFT formalism. We investigate the finite-volume dependence of these systems with different twists angles. We demonstrate how various finite-volume information can be used to improve calculations of binding energies in such a framework. Our results suggests that with appropriate twisting of boundaries, infinite-volume binding energies can be reliably extracted from calculations using modest volume sizes with cubic length $L\\approx8-14$ fm. Of particular importance is our derivation and numerical verification of three-body analogue of `i-periodic' twist angles that eliminate the leading order finite-volume effects to the three-body binding energy.

  13. A transportation security system applying RFID and GPS

    Directory of Open Access Journals (Sweden)

    Ruijian Zhang

    2013-03-01

    Full Text Available Purpose: This paper is about developing a centralized, internet based security tool which utilizes RFID and GPS technology to identify drivers and track the load integrity. Design/methodology/approach: The system will accomplish the security testing in real-time using the internet and the U.S. Customs’ database (ACE. A central database and the interfaces and communication between the database and ACE will be established. After the vehicle is loaded, all openings of the tanker are sealed with disposable RFID tag seals. Findings/value: An RFID reader and GPS tracker wirelessly connected with the databases will serve as testing grounds for the implementation of security measures that can help prevent future terrorist attacks and help in ensuring that the goods and products are not compromised while in transit. The system will also reduce the labor work of security check to its minimum. 

  14. The system of radiation protection applied in Czechoslovakia

    International Nuclear Information System (INIS)

    The concept of the radiation protection system (RPS) that has been gradually set up in Czechoslovakia was based on the Recommendations of the International Commission on Radiological Protection. A decree defines the responsibility, as well as more detailed obligations of organizations using radiation sources, as regards the protection of workers as well as the public, and includes the obligation to ensure an effective monitoring of radiation situations and of doses to persons. Expert supervision of adherence to the radiation protection regulations is carried out by the Hygiene Service, a public health inspection service whose activities in radiation protection are set up at the regional and central level. In each region there is a Radiation Hygiene Department with qualified personnel and appropriate instrumentation for the evaluation of exposure situations which may occur in the region. The departments supervise all workplaces using radiation sources, prepare binding recommendations to the regional health offices regarding the design of laboratories, licenses for the use of radiation sources, and approval for the start or termination of a practice. Central components of the structure directing the RPS in the country are the chief health officers of Bohemia and Slovakia and their expert bases - the Radiation Hygiene Centres at the Institutes for Hygiene and Epidemiology in both Republics. Apart from preparation or radiation protection standards and regulations, guidance as to methods and quality assurance for the work of regional Departments, these expert bases play a co-ordinating role in the system of handling radiation accidents and providing medical assistance to overexposed people. The Radiation Hygiene Centre in Prague acts as a centre for the radiation monitoring network in cases of nuclear accidents, in which the regional stations, nuclear power plants, research institutes and other bodies participate. A system of technical services in radiation protection

  15. Monocrystalline silicon solar cells applied in photovoltaic system

    OpenAIRE

    L.A. Dobrzański; A. Drygała; M. Giedroć; Macek, M

    2012-01-01

    Purpose: The aim of the paper is to fabricate the monocrystalline silicon solar cells using the conventional technology by means of screen printing process and to make of them photovoltaic system.Design/methodology/approach: The investigation of current – voltage characteristic to determinate basic electrical properties of monocrystalline silicon solar cells were investigated under Standard Test Condition. Photovoltaic module was produced from solar cells with the largest short-circuit curren...

  16. Software Systems for Robotics An Applied Research Perspective

    Directory of Open Access Journals (Sweden)

    Jack Collier

    2008-11-01

    Full Text Available Over the past 20 years, Defence Research and Development Canada has developed numerous teleoperated unmanned ground vehicles (UGV, many founded on the ANC?US command and control system. This paper relates how long experience with tele-operated UGVs influenced DRDC's shift in focus from tele-operated to autonomous unmanned vehicles (UV, the forces that guided DRDC's development approach and DRDC's experience adapting a specific tool set, MIRO, to a UGV implementation.

  17. A transportation security system applying RFID and GPS

    OpenAIRE

    Ruijian Zhang

    2013-01-01

    Purpose: This paper is about developing a centralized, internet based security tool which utilizes RFID and GPS technology to identify drivers and track the load integrity. Design/methodology/approach: The system will accomplish the security testing in real-time using the internet and the U.S. Customs’ database (ACE). A central database and the interfaces and communication between the database and ACE will be established. After the vehicle is loaded, all openings of the tanker are sealed with...

  18. Applying the Mahalanobis–Taguchi System to Vehicle Handling

    OpenAIRE

    Cudney, Elizabeth A.; Paryani, Kioumars; Ragsdell, Kenneth M.

    2006-01-01

    Abstract The Mahalanobis?Taguchi system (MTS) is a diagnosis and forecasting method using multivariate data. Mahalanobis distance (MD) is a measure based on correlations between the variables and patterns that can be identified and analyzed with respect to a base or reference group. The MTS is of interest because of its reported accuracy in forecasting using small, correlated data sets. This is the type ...

  19. An Expert System Applied in Construction Water Quality Monitoring

    Directory of Open Access Journals (Sweden)

    Leila Ooshaksaraie

    2011-01-01

    Full Text Available Problem statement: An untoward environmental impact of urban growth in Malaysia has been deterioration in a number of watercourses due to severe siltation and other pollutants from the construction site. Water quality monitoring is a plan for decision makers to take into account the adverse impacts of construction activities on the receiving water bodies. It is also a process for collecting the construction water quality monitoring, baseline data and standard level. Approach: In recent years, expert systems have been used extensively in different applications areas including environmental studies. In this study, expert system software -CWQM- developed by using Microsoft Visual Basic was introduced. CWQM to be used for water quality monitoring during construction activities was designed based on the legal process in Malaysia. Results: According to the water quality monitoring regulation enacted in Malaysia, construction activities require mandatory water quality monitoring plans duly approved by Department of Environment before staring activities. CWQM primarily aims to provide educational and support system for water quality monitoring engineers and decision-makers during construction activities. It displays water quality monitoring plan in report form, water sampling location in GIS format and water quality monitoring data in graph. Conclusion: When the use of CWQM in construction water quality monitoring becomes widespread, it is highly possible that it will be benefited in terms of having more accurate and objective decisions on construction projects which are mainly focused on reducing the stormwater pollution.

  20. Artificial Intelligence and Systems Theory: Applied to Cooperative Robots

    Directory of Open Access Journals (Sweden)

    Pedro U. Lima

    2008-11-01

    Full Text Available This paper describes an approach to the design of a population of cooperative robots based on concepts borrowed from Systems Theory and Artificial Intelligence. The research has been developed under the SocRob project, carried out by the Intelligent Systems Laboratory at the Institute for Systems and Robotics - Instituto Superior T?cnico (ISR/IST in Lisbon. The acronym of the project stands both for "Society of Robots" and "Soccer Robots", the case study where we are testing our population of robots. Designing soccer robots is a very challenging problem, where the robots must act not only to shoot a ball towards the goal, but also to detect and avoid static (walls, stopped robots and dynamic (moving robots obstacles. Furthermore, they must cooperate to defeat an opposing team. Our past and current research in soccer robotics includes cooperative sensor fusion for world modeling, object recognition and tracking, robot navigation, multi-robot distributed task planning and coordination, including cooperative reinforcement learning in cooperative and adversarial environments, and behavior-based architectures for real time task execution of cooperating robot teams.

  1. Study of thermoelectric systems applied to electric power generation

    International Nuclear Information System (INIS)

    A computational model has been developed in order to simulate the thermal and electric behavior of thermoelectric generators. This model solves the nonlinear system of equations of the thermoelectric and heat transfer equations. The inputs of the program are the thermoelectric parameters as a function of temperature and the boundary conditions, (room temperature and residual heat flux). The outputs are the temperature values of all the elements forming the thermoelectric generator, (performance, electric power, voltage and electric current generated). The model solves the equation system using the finite difference method and semi-empirical expressions for the convection coefficients. A thermoelectric electric power generation test bench has been built in order to validate and determine the accuracy of the computational model, which maximum error is lower than 5%. The objective of this study is to create a design tool that allows us to solve the system of equations involved in the electric generation process without needing to impose boundary conditions that are not known in the design phase, such as the temperature of the Peltier modules. With the computational model, we study the influence of the heat flux supplied as well as the room temperature on the electric power generated.

  2. Diversidad de plantas trepadoras y epífitas vasculares en un paisaje agroforestal del sur de chile: una comparación entre fragmentos de bosque nativo

    Directory of Open Access Journals (Sweden)

    Jimmy Pincheira-Ulbrich

    2012-12-01

    Full Text Available Se comparó la diversidad de plantas trepadoras y epífitas vasculares entre un fragmento de bosque siempreverde (Laureliopsis philippiana y Eucryphia cordifolia y cuatro fragmentos de bosque secundario dominados por Nothofagus obliqua en una matriz agroforestal en la precordillera costera de la provincia de Osorno (Chile. Sobre la base de un muestreo por transectos con observaciones desde la base del suelo, se obtuvo la riqueza de especies, la composición florística, la frecuencia de ocurrencia (fo y parámetros estructurales del bosque. Los resultados mostraron que: (1 la riqueza fue mayor en el fragmento siempreverde (19 especies y decreció en los fragmentos de N. obliqua (16 a 10 especies, (3 la familia Hymenophyllaceae (epíftas fue el grupo más diverso (10 especies, y con mayor fo en el fragmento siempreverde, (4 las trepadoras incrementaron su fo en los fragmentos de N. obliqua, (5 cuatro y cinco especies sólo se encontraron en el bosque siempreverde y N. obliqua, respectivamente, (6 la similitud florística varió entre 38 % y 75 % entre fragmentos, (7 el estado de desarrollo del bosque fue desigual entre las comunidades forestales. Se concluye que los cambios de diversidad de las especies ocurren por efecto de los cambios en la estructura del bosque.Vascular epiphytes and climbing plants diversity in an agroforestal landscape in southern Chile: a comparison among native forest fragments. We compared the diversity of vines and vascular epiphytes among an evergreen forest fragment (Laureliopsis philippiana y Eucryphia cordifolia and four fragments of secondary forest dominated for Nothofagus obliqua in an agro-forestry matrix landscape localized in the coastal range of Osorno, in Chile. Based on a sampling transects with ground-based observations, we obtained the species richness, floristic composition, frequency of occurrence (fo and forest structure. The results showed that: (1 the richness was higher in the evergreen forest (19

  3. Applying an integrated neuro-expert system model in a real-time alarm processing system

    Science.gov (United States)

    Khosla, Rajiv; Dillon, Tharam S.

    1993-03-01

    In this paper we propose an integrated model which is derived from the combination of a generic neuro-expert system model, an object model, and unix operating system process (UOSP) model. This integrated model reflects the strengths of both artificial neural nets (ANNs) and expert systems (ESs). A formalism of ES object, ANN object, UOSP object, and problem domain object is used for developing a set of generic data structures and methods. These generic data structures and methods help us to build heterogeneous ES-ANN objects with uniform communication interface. The integrated model is applied in a real-time alarm processing system for a non-trivial terminal power station. It is shown how features like hierarchical/distributed ES/ANN objects, inter process communication, and fast concurrent execution help to cope with real-time system constraints like, continuity, data variability, and fast response time.

  4. Innovating Multi-agent Systems Applied to Smart City

    Directory of Open Access Journals (Sweden)

    Michela Longo

    2014-05-01

    Full Text Available The aim of study is to talk about a generic model of Smart City with a multi-agents system and the aspects correlated to Internet. Smart cities are made by a high level of Information and Communication Technology (ICT structures able to transmit energy, information flows multidirectional and connect a different sector that include mobility, energy, social, economy. These components are very important to offer intelligence in a city, as basic infrastructure for a definition of a model repeatable and exportable, as well as supported by the European Community, that is allocating considerable funds (Horizon 2020 for the creation of Smart City.

  5. A Method to Apply Friction Modifier in Railway System

    Science.gov (United States)

    Matsumoto, Kosuke; Suda, Yoshihiro; Iwasa, Takashi; Fujii, Takeshi; Tomeoka, Masao; Tanimoto, Masuhisa; Kishimoto, Yasushi; Nakai, Takuji

    Controlling the friction between wheel and rail is direct and very effective measures to improve the curving performances of bogie trucks, because the curving performances of bogie truck depend much on friction characteristics. Authors have proposed a method, “friction control”, which utilizes friction modifier (KELTRACKTM HPF) with onboard spraying system. With the method, not only friction coefficient, but also friction characteristics are able to be controlled as expected. In this paper, results of fundamental experiments are reported which play an important role to realize the new method.

  6. COMPUTER VISION APPLIED IN THE PRECISION CONTROL SYSTEM

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Computer vision and its application in the precision control system are discussed. In the process of fabricating, the accuracy of the products should be controlled reasonably and completely. The precision should be kept and adjusted according to the information of feedback got from the measurement on-line or out-line in different procedures. Computer vision is one of the useful methods to do this. Computer vision and the image manipulation are presented, and based on this, a n-dimensional vector to appraise on precision of machining is given.

  7. Applying Real Options for Evaluating Investments in ERP Systems

    Science.gov (United States)

    Nakagane, Jun; Sekozawa, Teruji

    This paper intends to verify effectiveness of real options approach for evaluating investments in Enterprise Resource Planning systems (ERP) and proves how important it is to disclose shadow options potentially embedded in ERP investment. The net present value (NPV) method is principally adopted to evaluate the value of ERP. However, the NPV method assumes no uncertainties exist in the object. It doesn't satisfy the current business circumstances which are filled with dynamic issues. Since the 1990s the effectiveness of option pricing models for Information System (IS) investment to solve issues in the NPV method has been discussed in the IS literature. This paper presents 3 business cases to review the practical advantages of such techniques for IS investments, especially ERP investments. The first case is EDI development. We evaluate the project by a new approach with lighting one of shadow options, EDI implementation. In the second case we reveal an ERP investment has an “expanding option” in a case of eliminating redundancy. The third case describes an option to contract which is deliberately slotted in ERP development to prepare transferring a manufacturing facility.

  8. Gamma-ray scatter methods applied to industrial measurement systems

    Energy Technology Data Exchange (ETDEWEB)

    Holstad, Marie Bueie

    2004-09-01

    Throughout the work presented in this dissertation it has been confirmed that the use of scattered gamma-radiation is a complex but useful tool in industrial measurement science. Scattered radiation has shown to be useful both when traditional measurement principles cannot be used (Chapter 4) and when more information about a system is needed than what is obtained with transmission measurements (Chapter 6). All three main projects (Chapters 4, 5 and 6) confirm that the sensitivity and accuracy of systems based on scattered gamma-radiation depends strongly on the geometry of the setup and that that presence of multiple scattered radiation makes the problems complex. Chapter 4 shows that multiple scattered gamma-radiation can be used for detection of changes in density where the dimensions are too large to use transmitted radiation. There is, however, an upper limit on the thickness of the absorbing medium also when scattered radiation is utilized. As seen in Chapter 5, multiple scattered gamma-radiation can in principle also be used in level gauges with very compact measurement geometries. The main challenges are the sensitivity to interfaces between materials with similar densities and low count rate. These challenges could not be overcome for level measurements in gravitational separator tanks. The results presented in Chapter 6 show that it is feasible to combine transmission and scatter measurements to characterize produced water in the oil and gas industry. (Author)

  9. Gamma-ray scatter methods applied to industrial measurement systems

    International Nuclear Information System (INIS)

    Throughout the work presented in this dissertation it has been confirmed that the use of scattered gamma-radiation is a complex but useful tool in industrial measurement science. Scattered radiation has shown to be useful both when traditional measurement principles cannot be used (Chapter 4) and when more information about a system is needed than what is obtained with transmission measurements (Chapter 6). All three main projects (Chapters 4, 5 and 6) confirm that the sensitivity and accuracy of systems based on scattered gamma-radiation depends strongly on the geometry of the setup and that that presence of multiple scattered radiation makes the problems complex. Chapter 4 shows that multiple scattered gamma-radiation can be used for detection of changes in density where the dimensions are too large to use transmitted radiation. There is, however, an upper limit on the thickness of the absorbing medium also when scattered radiation is utilized. As seen in Chapter 5, multiple scattered gamma-radiation can in principle also be used in level gauges with very compact measurement geometries. The main challenges are the sensitivity to interfaces between materials with similar densities and low count rate. These challenges could not be overcome for level measurements in gravitational separator tanks. The results presented in Chapter 6 show that it is feasible to combine transmission and scatter measurements to characterize produced water in the oil and gas industry. (Author)

  10. Monocrystalline silicon solar cells applied in photovoltaic system

    Directory of Open Access Journals (Sweden)

    L.A. Dobrzański

    2012-07-01

    Full Text Available Purpose: The aim of the paper is to fabricate the monocrystalline silicon solar cells using the conventional technology by means of screen printing process and to make of them photovoltaic system.Design/methodology/approach: The investigation of current – voltage characteristic to determinate basic electrical properties of monocrystalline silicon solar cells were investigated under Standard Test Condition. Photovoltaic module was produced from solar cells with the largest short-circuit current, which were joined in series.Findings: This work presents a conventional technological process by means of screen printed method of monocrystalline silicon solar cells production. In order to obtain a device producing an electrical energy, solar cells were connected in a photovoltaic module. Then protected from damages by Schottky and Zener diodes.Practical implications: The module was used to build a demonstration photovoltaic system – traffic light - pedestrian crossing, which shows the practical use of widely available, renewable energy source which is the Sun.Originality/value: The key to solve ecological problems, which are effects of mass combustion of fossil fuel such as: coal and crude oil is development of renewable energy technology like photovoltaic energy.

  11. Environmental system applied to radioactive liquid effluent release

    International Nuclear Information System (INIS)

    The current environmental administration considers the productive activity as an environmental system, defined as a group of processes, interactions, parameters and factors involved in the production. This mastering dissertation evaluated the release of the liquid radioactive effluents at Instituto de Pesquisas Energeticas e Nucleares (IPEN), under a systemic environmental study. The study evaluated the source term at IPEN in the period from 2004 to 2008, making use of gamma-ray and alpha spectrometry, instrumental neutron activation analysis, liquid phase scintillation and atomic absorption spectrometry. The employed methodologies were verified using samples from the Intercomparison National Program - PNI/IRD and Reference Materials. The facilities that contributed the most in these releases were the Radiopharmaceutical Center (CR) and the Research Reactor Center (CRPq) with an average of 11,4% and 87,4%, respectively, relative to the present radioactive activity. The sewer system releases were within the radioactive protection regulations, showing the effectiveness of IPEN's Radioactive Effluents Monitoring Program. The concentration of the stable elements Ag, Cd, Cr, Fe, Mn, Ni, Pb and Zn was determined in the liquid effluent in ali the samples from the storage tanks TR1 and CR in the period from 2004 to 2008 and in some of the samples of other IPEN's facilities in the period from 2004 to 2007. Among the analyzed effluents, two samples were higher than the stable elements discharge standards established in the state of Sao Paulo, one sample was higher than the required value of the element cadmium and the other higher than required value of the element zinco The storage tank TR1 discharge flow was estimated in 10,9 ± 0,9 m3 h-1. The dilution factor at discharge point E1 was estimated using a radiotracers the isotopes 3H, 137CS, 60Co, 54Mn and 65Zn, which are commonly released into IPEN's sewer system. The executed radiotracer study was carried out without

  12. An applied study using systems engineering methods to prioritize green systems options

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Sonya M [Los Alamos National Laboratory; Macdonald, John M [Los Alamos National Laboratory

    2009-01-01

    For many years, there have been questions about the effectiveness of applying different green solutions. If you're building a home and wish to use green technologies, where do you start? While all technologies sound promising, which will perform the best over time? All this has to be considered within the cost and schedule of the project. The amount of information available on the topic can be overwhelming. We seek to examine if Systems Engineering methods can be used to help people choose and prioritize technologies that fit within their project and budget. Several methods are used to gain perspective into how to select the green technologies, such as the Analytic Hierarchy Process (AHP) and Kepner-Tregoe. In our study, subjects applied these methods to analyze cost, schedule, and trade-offs. Results will document whether the experimental approach is applicable to defining system priorities for green technologies.

  13. Kalman filtering applied to a reagent feed system

    International Nuclear Information System (INIS)

    Using a Kalman filter solves a troublesome measurement noise problem and, at the same time, improves nuclear safety by detecting leaks to the process' feed tanks. To demonstrate how this technology of optimal estimation can be exploited, this article presents a systematic plan and example of how a Kalman filter was proven in industrial use on a reagent analyzer. A process to recycle uranium from spent fuel elements uses a reagent stream containing boron to dissolve the fuel. The boron is the neutron poison that prevents a nuclear chain reaction during the uranium dissolution. The purpose of the Kalman filter for this system is to reduce the uncertainty in the boron concentration measurement. The filter also provides incipient fault detection by estimating the unmeasured state of any unpoisoned solution, which would dilute the boron solution, entering the feed vessel

  14. Applying Enzymatic Cascades for ISCPR in ω-transaminase Systems

    DEFF Research Database (Denmark)

    Janes, Kresimir; Woodley, John; Tufvesson, Pär; Gernaey, Krist

    , esterases, ketoreductases and proteases and many more emerging biocatalysts such are monoamine oxidases, transaminases and P450 monooxygenases to name a few. The focus of this thesis is the biocatalytic synthesis of small molecule pharmaceuticals (Mw<1000), and in particular the production of optically pure...... amines via ω-transaminases, which is an interesting class of reactions for the pharmaceutical industry. There are many challenges related to the realization and implementation of these technologies, and attempts of tackling them have been numerous. In some cases ω-transaminase catalyzed reactions are...... enzymatic cascades often provides the only viable option as equilibrium shifting strategy. In the literature several enzymatic cascades have been reported as an ISCPR for the ω-transaminase systems, however in most cases no process considerations have been made and the consequences of using a givens cascade...

  15. Complex Strategic Choices Applying Systemic Planning for Strategic Decision Making

    CERN Document Server

    Leleur, Steen

    2012-01-01

    Effective decision making requires a clear methodology, particularly in a complex world of globalisation. Institutions and companies in all disciplines and sectors are faced with increasingly multi-faceted areas of uncertainty which cannot always be effectively handled by traditional strategies. Complex Strategic Choices provides clear principles and methods which can guide and support strategic decision making to face the many current challenges. By considering ways in which planning practices can be renewed and exploring the possibilities for acquiring awareness and tools to add value to strategic decision making, Complex Strategic Choices presents a methodology which is further illustrated by a number of case studies and example applications. Dr. Techn. Steen Leleur has adapted previously established research based on feedback and input from various conferences, journals and students resulting in new material stemming from and focusing on practical application of a systemic approach. The outcome is a coher...

  16. Systems biology applied to vaccine and immunotherapy development

    Directory of Open Access Journals (Sweden)

    Marincola Francesco M

    2011-09-01

    Full Text Available Abstract Immunotherapies, including vaccines, represent a potent tool to prevent or contain disease with high morbidity or mortality such as infections and cancer. However, despite their widespread use, we still have a limited understanding of the mechanisms underlying the induction of protective immune responses. Immunity is made of a multifaceted set of integrated responses involving a dynamic interaction of thousands of molecules; among those is a growing appreciation for the role the innate immunity (i.e. pathogen recognition receptors - PRRs plays in determining the nature and duration (immune memory of adaptive T and B cell immunity. The complex network of interactions between immune manipulation of the host (immunotherapy on one side and innate and adaptive responses on the other might be fully understood only employing the global level of investigation provided by systems biology. In this framework, the advancement of high-throughput technologies, together with the extensive identification of new genes, proteins and other biomolecules in the "omics" era, facilitate large-scale biological measurements. Moreover, recent development of new computational tools enables the comprehensive and quantitative analysis of the interactions between all of the components of immunity over time. Here, we review recent progress in using systems biology to study and evaluate immunotherapy and vaccine strategies for infectious and neoplastic diseases. Multi-parametric data provide novel and often unsuspected mechanistic insights while enabling the identification of common immune signatures relevant to human investigation such as the prediction of immune responsiveness that could lead to the improvement of the design of future immunotherapy trials. Thus, the paradigm switch from "empirical" to "knowledge-based" conduct of medicine and immunotherapy in particular, leading to patient-tailored treatment.

  17. Requirements control system applied to collider dipole magnet development

    International Nuclear Information System (INIS)

    A number of Myths abound in the area of requirements development. The Requirements Control System (RCS) developed and used by General Dynamics on the CDM contract aims to dispel these myths and ensure comprehensive requirements flowdown to elements of the Collider Dipole Magnet (CDM) and the supporting Analysis, Demonstration, Quality Assurance and Master Test Plans. RCS also provides requirements traceability information by providing the source for each requirement, whether it be from a higher level specification, or from a supporting analysis or trade study. The computer is put to work doing what it does best, keeping track of details and checking for consistency and completeness. The myths that the use of RCS attempts to drive away are: I have to design it first so I can determine what the requirements are; I don't have time to write down the requirements; I'm too busy designing; I know what the requirements are; I don't see why I should write them down; If I have to wait for requirements, I'll never get done; The requirements are changing, so why document them until they are finalized? For the CDM program, the source requirements documents are the SSCL 15 Metre CDM Magnet System Specification and the SSCL CDM Interface Control Document. RCS has been used to generate: CDM Prime Item Development Specification; CDM Prime Item Product Fabrication Specification; Prime Item Product Function Specifications [Cold Mass, Cryostat, and Interconnect Region]; Critical Item Specifications [Beam Tube Assembly, and Superconducting Inner and Outer Cables]. Requirements have been further developed for major subassemblies such as the Cold Mass Support Post and other major items of tooling, test equipment, and transportation equipment. The use of RCS has enabled us to accomplish more work in a shorter time than conventional methods would allow

  18. Dynamical Systems Analysis Applied to Working Memory Data

    Directory of Open Access Journals (Sweden)

    FidanGasimova

    2014-07-01

    Full Text Available In the present paper we investigate weekly fluctuations in the working memory capacity (WMC assessed over a period of two years. We use dynamical system analysis, specifically a second order linear differential equation, to model weekly variability in WMC in a sample of 112 9th graders. In our longitudinal data we use a B-spline imputation method to deal with missing data. The results show a significant negative frequency parameter in the data, indicating a cyclical pattern in weekly memory updating performance across time. We use a multilevel modeling approach to capture individual differences in model parameters and find that a higher initial performance level and a slower improvement at the MU task is associated with a slower frequency of oscillation. Additionally, we conduct a simulation study examining the analysis procedure’s performance using different numbers of B-spline knots and values of time delay embedding dimensions. Results show that the number of knots in the B-spline imputation influence accuracy more than the number of embedding dimensions.

  19. Circular Interval Arithmetic Applied on LDMT for Linear Interval System

    Directory of Open Access Journals (Sweden)

    Stephen Ehidiamhen Uwamusi

    2014-07-01

    Full Text Available The paper considers the LDMT Factorization of a general nxn matrix arising from system of interval linear equations. We paid special emphasis on Interval Cholesky Factorization. The basic computational tool used is the square root method of circular interval arithmetic in a sense analogous to Gargantini and Henrici as well as the generalized square root method due to Petkovic which enables the construction of the square root of the resulting diagonal matrix. We also made use of Rump’s method for multiplying two intervals expressed in the form of midpoint-radius respectively. Numerical example of matrix factorization in this regard is given which forms the basis of discussion. It is shown that LDMT even though is a numerically stable method for any diagonally dominant matrix it also can lead to excess width of the solution set. It is also pointed out that in spite of the above mentioned objection to interval LDMT it has in addition , the advantage that in the presence of several solution sets sharing the same interval matrix the LDMT Factorization requires to be computed only once which helps in saving substantial computational time. This may be found applicable in the development of military hard ware which requires shooting at a single point but produces multiple broadcast at all other points

  20. Work flow management systems applied in nuclear power plants management system to a new computer platform

    International Nuclear Information System (INIS)

    Activities performed in most companies are based on the flow of information between their different departments and personnel. Most of this information is on paper (delivery notes, invoices, reports, etc). The percentage of information transmitted electronically (electronic transactions, spread sheets, files from word processors, etc) is usually low. The implementation of systems to control and speed up this work flow is the aim of work flow management systems. This article presents a prototype for applying work flow management systems to a specific area: the basic life cycle of a purchase order in a nuclear power plant, which requires the involvement of various computer applications: purchase order management, warehouse management, accounting, etc. Once implemented, work flow management systems allow optimisation of the execution of different tasks included in the managed life cycles and provide parameters to, if necessary, control work cycles, allowing their temporary or definitive modification. (Author)

  1. Applying axiomatic design to a medication distribution system

    Science.gov (United States)

    Raguini, Pepito B.

    As the need to minimize medication errors drives many medical facilities to come up with robust solutions to the most common error that affects patient's safety, these hospitals would be wise to put a concerted effort into finding methodologies that can facilitate an optimized medical distribution system. If the hospitals' upper management is looking for an optimization method that is an ideal fit, it is just as important that the right tool be selected for the application at hand. In the present work, we propose the application of Axiomatic Design (AD), which is a process that focuses on the generation and selection of functional requirements to meet the customer needs for product and/or process design. The appeal of the axiomatic approach is to provide both a formal design process and a set of technical coefficients for meeting the customer's needs. Thus, AD offers a strategy for the effective integration of people, design methods, design tools and design data. Therefore, we propose the AD methodology to medical applications with the main objective of allowing nurses the opportunity to provide cost effective delivery of medications to inpatients, thereby improving quality patient care. The AD methodology will be implemented through the use of focused stores, where medications can be readily stored and can be conveniently located near patients, as well as a mobile apparatus that can also store medications and is commonly used by hospitals, the medication cart. Moreover, a robust methodology called the focused store methodology will be introduced and developed for both the uncapacitated and capacitated case studies, which will set up an appropriate AD framework and design problem for a medication distribution case study.

  2. Ordered mesoporous silica carrier system applied in nanobiothecnology

    Directory of Open Access Journals (Sweden)

    Andreza de Sousa

    2005-10-01

    Full Text Available Ordered mesoporous materials like SBA15 possess a network of channels and pores of well-defined size in the nanoscale range (2-50 nm. This particular pore architecture makes them suitable candidates for hosting and delivery under appropriate conditions of a variety of molecules of pharmaceutical interest, including radiopharmaceuticals. The characteristics of SBA-15 prepared in different temperatures and the behavior of this system regarding microencapsulation of a model drug were investigated. The calcined samples were formed in 0.2 g disks and were soaked in a solution of atenolol used as a model drug. The modification of the aging temperature provoked changes in the structure of the pores, indicating the presence of microporosity and connections between mesopores. Aging the materials at a higher temperature resulted in no microporosity and this fact influenced the control of the release of the model drug.Recentes estudos conduziram à descoberta da sílica mesoporosa com estrutura hexagonal, que apresenta elevada área superficial (700 a 1000 m²/g, tamanho de poros grande (5 a 9 nm e espessura fina de parede do poro (3,5 a 5,3 nm, chamado SBA-15. Essas características fazem destes materiais matrizes adequadas para a incorporação e liberação controlada, sob condições apropriadas, de uma série de biomoléculas, principalmente radiofármacos. As características do SBA-15 preparado em diferentes temperaturas de envelhecimento e o comportamento desse sistema com relação ao micreoencapsulamento de uma droga modelo foi investigado. As amostras calcinadas foram conformadas em discos e imersas em uma solução saturada de atenolol, usado como droga modelo. A variação na temperatura de tratamento provoca algumas mudanças na estrutura dos poros, indicando a presença de microporosidade e interconectividade entre os mesoporos em condições específicas. Foi observado que materiais envelhecidos a elevadas temperaturas não apresentam

  3. Computing and Systems Applied in Support of Coordinated Energy, Environmental, and Climate Planning

    Science.gov (United States)

    This talk focuses on how Dr. Loughlin is applying Computing and Systems models, tools and methods to more fully understand the linkages among energy systems, environmental quality, and climate change. Dr. Loughlin will highlight recent and ongoing research activities, including: ...

  4. Power Efficiency of Systems Applied for Heating Building and Structure External Walls with Ventilated Air Spaces

    OpenAIRE

    I. F. Fialko; A. S. Statsenko

    2014-01-01

    The paper considers power-efficient systems applied for heating building and structure external walls with ventilated air spaces and prescribes directions and problems pertaining to power-efficiency improvement of such systems.

  5. Environmental sustainability assessment of urban systems applying coupled urban metabolism and life cycle assessment

    DEFF Research Database (Denmark)

    Birkved, Morten; Goldstein, Benjamin Paul

    2013-01-01

    urban metabolism (UM) and life cycle assessment (LCA) can be applied to assess the sustainability of urban system, taking into account up- and downstream activities directly or indirectly linked to the metabolism of urban systems. Further we apply the fused UM-LCA approach to assess the absolute...

  6. Comparison of transverse dental changes induced by the palatally applied Frog appliance and buccally applied Karad's integrated distalizing system

    Science.gov (United States)

    Kaygisiz, Emine; Unver, Fatih; Tortop, Tuba

    2016-01-01

    Objective To compare the transverse dental changes induced by the palatally applied Frog appliance and buccally applied Karad's integrated distalizing system (KIDS). Methods We evaluated the pre- and post distalization orthodontic models of 39 patients, including 19 treated using the Frog appliance, which is palatally positioned (Frog group), and 20 treated using KIDS, which is buccally positioned (KIDS group). Changes in intermolar and interpremolar distances and the amount of maxillary premolar and molar rotation were evaluated on model photocopies. Wilcoxon and Mann-Whitney U tests were used for statistical evaluations. A p-value of < 0.05 was considered statistically significant. Results Significant distopalatal rotation of premolars and distobuccal rotation of molars were observed in Frog group (p < 0.05), while significant distopalatal rotation of molars (p < 0.05), with no significant changes in premolars, was observed in KIDS group. The amount of second premolar and first molar rotation was significantly different between the two groups (p < 0.05 and p < 0.001, respectively). Furthermore, expansion in the region of the first molars and second premolars was significantly greater in KIDS group than in Frog group (p < 0.001 for both). Conclusions Our results suggest that the type and amount of first molar rotation and expansion vary with the design of the distalization appliance used. PMID:27019824

  7. Informe de ejecución del proyecto de innovación tecnológica en la docencia del área de ingeniería agroforestal

    OpenAIRE

    Herrero Jiménez, Carlos Miguel

    2011-01-01

    El proyecto de innovación docente tecnológica en el área de ingeniería agroforestal para el curso 2010-2011 perseguía los siguientes objetivos: Ob-1. Objetos de aprendizaje: Configurar nuevos y mejorados objetos de aprendizaje. Ob-2. Evaluación de competencias: Establecer un sistema de evaluación de competencias. Ob-3. Clases virtuales: Configurar sesiones de aprendizaje virtual para la modalidad de "contrato de aprendizaje". Ob-4. Metodologías activas de aprendizaje: Incorporar m...

  8. Flujos de gases de efecto invernadero, potencial de calentamiento global y evaluación de emergía del sistema agroforestal Quesungual en el sur de Lempira, Honduras

    OpenAIRE

    Ferreira Catrileo, Oscar Iván

    2008-01-01

    El Sistema Agroforestal Quesungual (SAQ) es un sistema conservacionista que se practica en el sur de Lempira, Honduras. Se considera como una alternativa viable frente al sistema tradicional de tala y quema, pero se desconocen sus beneficios ambientales como la reducción de las emisiones de gases de efecto invernadero y la utilización de recursos renovables y sostenibles. Se determinaron los flujos de los gases de efecto invernadero: óxido nitroso (N2O), metano (CH4) y dióxido de carbono (CO2...

  9. NetCDF based data archiving system applied to ITER Fast Plant System Control prototype

    Energy Technology Data Exchange (ETDEWEB)

    Castro, R., E-mail: rodrigo.castro@visite.es [Asociacion EURATOM/CIEMAT para Fusion, Madrid (Spain); Vega, J. [Asociacion EURATOM/CIEMAT para Fusion, Madrid (Spain); Ruiz, M.; De Arcas, G.; Barrera, E.; Lopez, J.M.; Sanz, D. [Grupo de Investigacion en Instrumentacion y Acustica Aplicada, UPM, Madrid (Spain); Goncalves, B.; Santos, B. [Associacao EURATOM/IST, IPFN - Laboratorio Associado, IST, Lisboa (Portugal); Utzel, N.; Makijarvi, P. [ITER Organization, St. Paul lez Durance Cedex (France)

    2012-12-15

    Highlights: Black-Right-Pointing-Pointer Implementation of a data archiving solution for a Fast Plant System Controller (FPSC) for ITER CODAC. Black-Right-Pointing-Pointer Data archiving solution based on scientific NetCDF-4 file format and Lustre storage clustering. Black-Right-Pointing-Pointer EPICS control based solution. Black-Right-Pointing-Pointer Tests results and detailed analysis of using NetCDF-4 and clustering technologies on fast acquisition data archiving. - Abstract: EURATOM/CIEMAT and Technical University of Madrid (UPM) have been involved in the development of a FPSC (Fast Plant System Control) prototype for ITER, based on PXIe (PCI eXtensions for Instrumentation). One of the main focuses of this project has been data acquisition and all the related issues, including scientific data archiving. Additionally, a new data archiving solution has been developed to demonstrate the obtainable performances and possible bottlenecks of scientific data archiving in Fast Plant System Control. The presented system implements a fault tolerant architecture over a GEthernet network where FPSC data are reliably archived on remote, while remaining accessible to be redistributed, within the duration of a pulse. The storing service is supported by a clustering solution to guaranty scalability, so that FPSC management and configuration may be simplified, and a unique view of all archived data provided. All the involved components have been integrated under EPICS (Experimental Physics and Industrial Control System), implementing in each case the necessary extensions, state machines and configuration process variables. The prototyped solution is based on the NetCDF-4 (Network Common Data Format) file format in order to incorporate important features, such as scientific data models support, huge size files management, platform independent codification, or single-writer/multiple-readers concurrency. In this contribution, a complete description of the above mentioned solution

  10. Applied Systemic Theory and Educational Psychology: Can the Twain Ever Meet?

    Science.gov (United States)

    Pellegrini, Dario W.

    2009-01-01

    This article reflects on the potential benefits of applying systemic theory to the work of educational psychologists (EPs). It reviews developments in systemic thinking over time, and discusses the differences between more directive "first order" versus collaborative "second order" approaches. It considers systemic theories and illustrates their…

  11. Beam diagnostics and data acquisition system for ion beam transport line used in applied research

    International Nuclear Information System (INIS)

    Ion beam transport line for applied research on U-400 cyclotron, beam diagnostics and data acquisition system for condensed matter studies are described. The main features of Windows-based real time program are considered

  12. Intelligent Decisional Assistant that Facilitate the Choice of a Proper Computer System Applied in Busines

    OpenAIRE

    Nicolae MARGINEAN

    2009-01-01

    The choice of a proper computer system is not an easy task for a decider. One reason could be the present market development of computer systems applied in business. The big number of the Romanian market players determines a big number of computerized products, with a multitude of various properties. Our proposal tries to optimize and facilitate this decisional process within an e-shop where are sold IT packets applied in business, building an online decisional assistant, a special component ...

  13. Design and Experiment of Slave Computer Control System for Applying Variable-rate Liquid Fertilizer

    Institute of Scientific and Technical Information of China (English)

    Zhang Ying-zi; Chen Hai-tao; Hou Shou-yin; Ji Wen-yi; Ouyang Bin-lin; Dun Guo-qiang; Zhang Ji-cheng

    2015-01-01

    In order to increase the applying rate of liquid fertilizer and reduce environmental pollution, a slave computer control system for applying variable-rate liquid fertilizer was designed. The system used SMC as core processor and electrically controlled pressure regulator as execution component. The characteristic equation of the system was obtained by using classical control theory. Results indicated that the characteristic equation met the requirements of routh-criterion, which indicated the working process of the system was stable. Performance of the slave computer was verified via bench tests. Results demonstrated that there was no significant influence on the response from interclass error. The fertilization error was less than 0.9, and the fertilization accuracy was larger than 97%. The liquid fertilizer emitted by the fertilizing devices had no significant difference in uniformity, which met the demands of the slave computer control system for applying variable-rate liquid fertilizer.

  14. Applying an Ontology to a Patrol Intrusion Detection System for Wireless Sensor Networks

    OpenAIRE

    Chia-Fen Hsieh; Rung-Ching Chen; Yung-Fa Huang

    2014-01-01

    With the increasing application of wireless sensor networks (WSN), the security requirements for wireless sensor network communications have become critical. However, the detection mechanisms of such systems impact the effectiveness of the entire network. In this paper, we propose a lightweight ontology-based wireless intrusion detection system (OWIDS). The system applies an ontology to a patrol intrusion detection system (PIDS). A PIDS is used to detect anomalies via detection knowledge. The...

  15. Applying Test-Paradigms in a Generic Tutoring System Concept for Web-based Learning

    OpenAIRE

    Brust, Matthias R.

    2007-01-01

    Realizing test scenarios through a tutoring system involve questions about architecture and didactic methods in such a system. Observing the fact that traditional tutoring systems normally are domain-static, this paper shows investigations for a generic domain-independent tutoring system for utilizing test scenarios in computer-based and web-based environments. Furthermore, test paradigms are analyzed and it is presented an approach for realizing functionality for applying test paradigms in t...

  16. Shape memory alloys applied to improve rotor-bearing system dynamics - an experimental investigation

    OpenAIRE

    Enemark, Søren; Santos, Ilmar; Marcelo A. Savi

    2015-01-01

    tor-bearing systems have critical speeds and to pass through them is an ongoing challenge in the field of mechanical engineering. The incorporation of shape memory alloys in rotating systems has an increasing importance to improve system performance and to avoid potential damaging situations when passing through critical speeds. In this work, the feasibility of applying shape memory alloys to a rotating system is experimentally investigated. Shape memory alloys can change their stiffness with...

  17. Applying the Earth System Grid Security System in a Heterogeneous Environment of Data Access Services

    Science.gov (United States)

    Kershaw, Philip; Lawrence, Bryan; Lowe, Dominic; Norton, Peter; Pascoe, Stephen

    2010-05-01

    CEDA (Centre for Environmental Data Archival) based at STFC Rutherford Appleton Laboratory is host to the BADC (British Atmospheric Data Centre) and NEODC (NERC Earth Observation Data Centre) with data holdings of over half a Petabyte. In the coming months this figure is set to increase by over one Petabyte through the BADC's role as one of three data centres to host the CMIP5 (Coupled Model Intercomparison Project Phase 5) core archive of climate model data. Quite apart from the problem of managing the storage of such large volumes there is the challenge of collating the data together from the modelling centres around the world and enabling access to these data for the user community. An infrastructure to support this is being developed under the US Earth System Grid (ESG) and related projects bringing together participating organisations together in a federation. The ESG architecture defines Gateways, the web interfaces that enable users to access data and data serving applications organised into Data Nodes. The BADC has been working in collaboration with US Earth System Grid team and other partners to develop a security system to restrict access to data. This provides single sign-on via both OpenID and PKI based means and uses role based authorisation facilitated by SAML and OpenID based interfaces for attribute retrieval. This presentation will provide an overview of the access control architecture and look at how this has been implemented for CEDA. CEDA has developed an expertise in data access and information services over several years through a number of projects to develop and enhance these capabilities. Participation in CMIP5 comes at a time when a number of other software development activities are coming to fruition. New services are in the process of being deployed alongside services making up the system for ESG. The security system must apply access control across this heterogeneous environment of different data services and technologies. One strand

  18. Design of multivariable feedback control systems via spectral assignment. [as applied to aircraft flight control

    Science.gov (United States)

    Liberty, S. R.; Mielke, R. R.; Tung, L. J.

    1981-01-01

    Applied research in the area of spectral assignment in multivariable systems is reported. A frequency domain technique for determining the set of all stabilizing controllers for a single feedback loop multivariable system is described. It is shown that decoupling and tracking are achievable using this procedure. The technique is illustrated with a simple example.

  19. VIABILITY OF SOME APPLIED COST SYSTEMS IN MANUFACTURING FIRMS: EGYPT'S CASE

    Directory of Open Access Journals (Sweden)

    Karim Mamdouh ABBAS

    2015-04-01

    Full Text Available The present study aims to analyze viability of some applied cost systems. The population of the study is some Egyptian manufacturing firms. The number of received questionnaires was 385. The results indicated that , according to the application extent indicator, the currently cost systems in Egyptian manufacturing firms may be descendingly arranged as follows: Activity Based Costing (ABC system, Target Costing (TC system , Resource Consumption Accounting (RCA system, Activity Based Management (ABM ,Other systems, Theory of Constraints (TOC and Value Chain (VC analysis.

  20. Stability analysis of multi-infeed HVDC system applying VSC-HVDC

    DEFF Research Database (Denmark)

    Liu, Yan; Chen, Zhe

    2010-01-01

    /EMTDC to verify the theoretical analysis. Simulation results indicate that this dual infeed HVDC system can realize higher stability than single infeed HVDC system. And different control strategies on a VSC-HVDC link may result in different influence on AC voltage and active power oscillation during......This paper presents a general model of dual infeed HVDC system applying VSC-HVDC, which can be used as an element in large multi infeed HVDC system. The model may have different structure under different grid faults because of the action of breakers. Hence power flow of the system based on this...... model is analyzed under steady state and different kinds of grid fault transient situations. Two main control methods applied on VSC-HVDC link in this dual infeed HVDC system are investigated, and comparative analysis of them under transient situation is presented. A simulation model is built in PSCAD...

  1. QuickTime Virtual Reality Technology Applies to Practical Teaching Recording System

    OpenAIRE

    Yongyong Zhu

    2013-01-01

    QTVR is virtual reality technology which is based on static images and we apply it to practical teaching section. Through the practical teaching record system, virtual reality technology is applied to the whole journey of practical teaching. Give full play to the merits of strong sense of reality of the QTVR technology, good interactive performance, impressive immersive experience, convenience of produce and transmission, make seamless integration with the various present online teaching plat...

  2. Uncharted territory: A complex systems approach as an emerging paradigm in applied linguistics

    OpenAIRE

    Albert J Weideman

    2011-01-01

    Developing a theory of applied linguistics is a top priority for the discipline today. The emergence of a new paradigm - a complex systems approach - in applied linguistics presents us with a unique opportunity to give prominence to the development of a foundational framework for this design discipline. Far from being a mere philosophical exercise, such a framework will find application in the training and induction of new entrants into the discipline within the developing context of South Af...

  3. Analysis, Modelling, and Simulation of Droop Control with Virtual Impedance Loop Applied to Parallel UPS Systems

    OpenAIRE

    Lima, Francisco Kleber A.; Branco, Carlos Gustavo C.; Josep M. Guerrero; Neto, Luis Juarez C.; Carvalho, Samuel S.; Torrico-Bascope, Rene P.

    2013-01-01

    This paper explores a control strategy for parallel uninterruptible power systems (UPS). The control technique used in that work was based on the droop control method. This method is usually applied to achieve good active and reactive power sharing when communication between the inverters is difficult due to its physical location. This paper has considered that the UPS systems there were no comunication between their controls. A detailed mathematical model about the explored system is shown i...

  4. ASPECTS OF OBSTACLES FOR APPLYING ACTIVITY BASED COSTING (ABC SYSTEM IN EGYPTIAN FIRMS

    Directory of Open Access Journals (Sweden)

    Petru STEFEA

    2013-10-01

    Full Text Available The following investigation aims to determine the aspects of obstacles for applying Activity Based Costing (ABC system in the Egyptian case and the significant differences among the effects of such obstacles . The Study used the survey method to describe and analyze the obstacles in some Egyptian firms. The population of the study is Egyptian manufacturing firms. This survey used the number of 392 questionnaires that were used throughout the total of 23 Egyptian manufacturing firms, during the first half of 2013. Finally, the study found some influencing obstacles for applying this system (ABC and there were significant differences among the aspects of obstacles for applying ABC system in the Egyptian manufacturing firms.

  5. Intelligent Decisional Assistant that Facilitate the Choice of a Proper Computer System Applied in Busines

    Directory of Open Access Journals (Sweden)

    Nicolae MARGINEAN

    2009-01-01

    Full Text Available The choice of a proper computer system is not an easy task for a decider. One reason could be the present market development of computer systems applied in business. The big number of the Romanian market players determines a big number of computerized products, with a multitude of various properties. Our proposal tries to optimize and facilitate this decisional process within an e-shop where are sold IT packets applied in business, building an online decisional assistant, a special component conceived to facilitate the decision making needed for the selection of the pertinent IT package that fits the requirements of one certain business, described by the decider. The user interacts with the system as an online buyer that visit an e-shop where are sold IT package applied in economy.

  6. The Art World's Concept of Negative Space Applied to System Safety Management

    Science.gov (United States)

    Goodin, James Ronald (Ronnie)

    2005-01-01

    Tools from several different disciplines can improve system safety management. This paper relates the Art World with our system safety world, showing useful art schools of thought applied to system safety management, developing an art theory-system safety bridge. This bridge is then used to demonstrate relations with risk management, the legal system, personnel management and basic management (establishing priorities). One goal of this presentation/paper is simply to be a fun diversion from the many technical topics presented during the conference.

  7. Applying Test-Paradigms in a Generic Tutoring System Concept for Web-based Learning

    CERN Document Server

    Brust, Matthias R

    2007-01-01

    Realizing test scenarios through a tutoring system involve questions about architecture and didactic methods in such a system. Observing the fact that traditional tutoring systems normally are domain-static, this paper shows investigations for a generic domain-independent tutoring system for utilizing test scenarios in computer-based and web-based environments. Furthermore, test paradigms are analyzed and it is presented an approach for realizing functionality for applying test paradigms in the presented generic tutoring system architecture by an XML-specified language.

  8. AFC applied to HVDC interconnected systems and multivariable control. Chokuryu renkeiyo AFC to tahensu seigyo

    Energy Technology Data Exchange (ETDEWEB)

    Hatano, M. (Electric Power Development Co. Ltd., Tokyo (Japan)); Tsumenaga, M. (Toshiba Corp., Tokyo (Japan))

    1993-06-20

    Together with a growth of the power demand as well as becoming to be a higher degree and diversification of the social function, the power system has been getting more and more complicated. By the digital technology, which has remarkably developed in recent years, in addition, the control theory in a high level, which had been hard to be handled by the conventional technology, has become possible to be applied for the control devices, also in the control system of the power system. In this paper, an example applied the multivariable control, the modern control theory has been utilized, for the automatic frequency control(AFC) of the HVDC interconnected systems, which connect two power systems, is introduced. In order to verify the control performance of AFC applied the multivariable control, in addition, the AFC device is manufactured, and then the simulation is performed by combining it with the power system simulator simulated two AC systems and one DC interconnected system. When the multivariable controlled AFC is compared with the conventional AFC as for the frequency fluctuation, it is clearly found that the control performance of the former is better than the latter. 2 refs., 5 figs., 1 tab.

  9. Fundamental Study on Saving Energy for Electrified Railway System Applying High Temperature Superconductor Motor and Energy Storage System

    Science.gov (United States)

    Konishi, Takeshi; Nakamura, Taketsune; Amemiya, Naoyuki

    Induction motor instead of dc one has been applied widely for dc electric rolling stock because of the advantage of its utility and efficiency. However, further improvement of motor characteristics will be required to realize environment-friendly dc railway system in the future. It is important to study more efficient machine applying dc electric rolling stock for next generation high performance system. On the other hand, the methods to reuse regenerative energy produced by motors effectively are also important. Therefore, we carried out fundamental study on saving energy for electrified railway system. For the first step, we introduced the energy storage system applying electric double-layer capacitors (EDLC), and its control system. And then, we tried to obtain the specification of high temperature superconductor induction/synchronous motor (HTS-ISM), which performance is similar with that of the conventional induction motors. Furthermore, we tried to evaluate an electrified railway system applying energy storage system and HTS-ISM based on simulation. We succeeded in showing the effectiveness of the introductions of energy storage system and HTS-ISM in DC electrified railway system.

  10. Identifying a cooperative control mechanism between an applied field and the environment of open quantum systems

    Science.gov (United States)

    Gao, Fang; Rey-de-Castro, Roberto; Wang, Yaoxiong; Rabitz, Herschel; Shuang, Feng

    2016-05-01

    Many systems under control with an applied field also interact with the surrounding environment. Understanding the control mechanisms has remained a challenge, especially the role played by the interaction between the field and the environment. In order to address this need, here we expand the scope of the Hamiltonian-encoding and observable-decoding (HE-OD) technique. HE-OD was originally introduced as a theoretical and experimental tool for revealing the mechanism induced by control fields in closed quantum systems. The results of open-system HE-OD analysis presented here provide quantitative mechanistic insights into the roles played by a Markovian environment. Two model open quantum systems are considered for illustration. In these systems, transitions are induced by either an applied field linked to a dipole operator or Lindblad operators coupled to the system. For modest control yields, the HE-OD results clearly show distinct cooperation between the dynamics induced by the optimal field and the environment. Although the HE-OD methodology introduced here is considered in simulations, it has an analogous direct experimental formulation, which we suggest may be applied to open systems in the laboratory to reveal mechanistic insights.

  11. Characterisation of biodiversity in improved rubber agroforests in West-Kalimantan, Indonesia. Real and Potential uses for spontaneous plants

    OpenAIRE

    Diaz-Novellon, S.; Penot, E.,; Arnaud, M.

    2004-01-01

    Since the introduction of rubber at the turn of the 20th century smallholders have developed an original complex agroforestry system called jungle rubber in which non selected young rubber trees (seedlings) are managed extensively alongside secondary forest re-growth. The issue of improving smallholder rubber productivity at affordable capital investments and levels of inputs while maintaining the environmental benefits of jungle rubber has been addressed by the Smallholder Rubber Agroforestr...

  12. 26th International Conference on Industrial, Engineering & Other Applications of Applied Intelligent Systems (IEA/AIE)

    CERN Document Server

    Bosse, Tibor; Hindriks, Koen; Hoogendoorn, Mark; Jonker, Catholijn; Treur, Jan; Contemporary Challenges and Solutions in Applied Artificial Intelligence

    2013-01-01

      Since its origination in the mid-twentieth century, the area of Artificial Intelligence (AI) has undergone a number of developments. While the early interest in AI was mainly triggered by the desire to develop artifacts that show the same intelligent behavior as humans, nowadays scientists have realized that research in AI involves a multitude of separate challenges, besides the traditional goal to replicate human intelligence. In particular, recent history has pointed out that a variety of ‘intelligent’ computational techniques, part of which are inspired by human intelligence, may be successfully applied to solve all kinds of practical problems. This sub-area of AI, which has its main emphasis on applications of intelligent systems to solve real-life problems, is currently known under the term Applied Intelligence.   The objective of the International Conference on Industrial, Engineering & Other Applications of Applied Intelligent Systems (IEA/AIE) is to promote and disseminate recent research ...

  13. Applied Nuclear Accountability Systems: A Case Study in the System Architecture and Development of NuMAC

    International Nuclear Information System (INIS)

    This is a case study of the NuMAC nuclear accountability system developed at a private fuel fabrication facility. This paper investigates nuclear material accountability and safeguards by researching expert knowledge applied in the system design and development. Presented is a system developed to detect and deter the theft of weapons grade nuclear material. Examined is the system architecture that includes: issues for the design and development of the system; stakeholder issues; how the system was built and evolved; software design, database design, and development tool considerations; security and computing ethics. (author)

  14. Expert Meeting Report: Recommendations for Applying Water Heaters in Combination Space and Domestic Water Heating Systems

    Energy Technology Data Exchange (ETDEWEB)

    Rudd, A.; Ueno, K.; Bergey, D.; Osser, R.

    2012-07-01

    The topic of this meeting was 'Recommendations For Applying Water Heaters In Combination Space And Domestic Water Heating Systems.' Presentations and discussions centered on the design, performance, and maintenance of these combination systems, with the goal of developing foundational information toward the development of a Building America Measure Guideline on this topic. The meeting was held at the Westford Regency Hotel, in Westford, Massachusetts on 7/31/2011.

  15. Simulating open quantum systems by applying SU(4) to quantum master equations

    OpenAIRE

    Xu, Minghui; Tieri, D. A.; Holland, M J

    2013-01-01

    We show that open quantum systems of two-level atoms symmetrically coupled to a single-mode photon field can be efficiently simulated by applying a SU(4) group theory to quantum master equations. This is important since many foundational examples in quantum optics fall into this class. We demonstrate the method by finding exact solutions for many-atom open quantum systems such as lasing and steady state superradiance.

  16. Applied Energy Systems: Hydrostatic Fluid Power Transmission and Flow in Pipes

    OpenAIRE

    McGovern, Jim

    2012-01-01

    This is an intentionally compact textbook or set of notes for a module addressing basic Fluid Mechanics for incompressible fluids within the context of Applied Energy Systems. Rather than attempting to cover Fluid Mechanics in a very broad and general way, two practical areas are selected in the use of fluids: hydrostatic power transmission systems and the flow of fluids through pipes and fittings. This allows the two areas to be presented in some detail, but also allows them to be sample app...

  17. Toward a Blended Ontology: Applying Knowledge Systems to Compare Therapeutic and Toxicological Nanoscale Domains

    Science.gov (United States)

    Bionanomedicine and environmental research share need common terms and ontologies. This study applied knowledge systems, data mining, and bibliometrics used in nano-scale ADME research from 1991 to 2011. The prominence of nano-ADME in environmental research began to exceed the pu...

  18. Analysis, Modelling, and Simulation of Droop Control with Virtual Impedance Loop Applied to Parallel UPS Systems

    DEFF Research Database (Denmark)

    Lima, Francisco Kleber A.; Branco, Carlos Gustavo C.; Guerrero, Josep M.;

    2013-01-01

    This paper explores a control strategy for parallel uninterruptible power systems (UPS). The control technique used in that work was based on the droop control method. This method is usually applied to achieve good active and reactive power sharing when communication between the inverters is diff...

  19. Latex Colloid Dynamics in Complex Dispersions : Fluorescence Microscopy Applied to Coating Color Model Systems

    OpenAIRE

    Carlsson, Gunilla

    2004-01-01

    Coating colors are applied to the base paper in order to maximize the performance of the end product. Coating colors are complex colloidal systems, mainly consisting of water, binders, and pigments. To understand the behavior of colloidal suspensions, an understanding of the interactions between its components is essential.

  20. Plug and Play Process Control Applied to a District Heating System

    DEFF Research Database (Denmark)

    Knudsen, Torben; Trangbæk, Klaus; Kallesøe, Carsten Skovmose

    2008-01-01

    The general ideas within plug and play process control (PTC) are to initialize and reconfigure control systems just by plug and play. In this paper these ideas are applied to a district heating pressure control problem. First of all this serves as a concrete example of PTC, secondly some of the f...

  1. Some systemic criteria of the differentiation between fundamental and applied terminologies

    Directory of Open Access Journals (Sweden)

    Akayeva Kh. A.

    2016-01-01

    Full Text Available In the article the issue of singling out some systemic criteria of differentiation between the fundamental and applied terminologies is considered. The authors point at the fact that each terminology has its own individual peculiarities, which mark it out against a general background of the terminological fund of a certain language. It is asserted that one of the most important and effective criteria that can be the basis of the approach to the study of sublanguages for special purposes is a fundamental or applied character of the sphere of professional or scientific knowledge verbalized by a certain terminology. Such terms, as “fundamental terminology”, “applied terminology” and “terminology of transition type”, are introduced for scientific use. The fundamental terminology is understood as a sublanguage for special purposes that verbalizes the notions, forming the totality of fundamental knowledge, serving for the description of phenomena and processes in reality and in science, in the framework of which the fundamental research is carried out. The applied terminology is the name for the sublanguage for special purposes representing the notions, in which the results of human being’s practical scientific-industrial activity for changing the reality, forming the artificial habitat, are conceptualized. The terminology of transition type is the terminology that verbalizes the fragments of the field of scientific knowledge in which the research can have both a fundamental and applied character. The authors come to the conclusion that pure applied or fundamental terminologies are quite rare, that it is rational to speak about the degree of manifestation of the applied or fundamental character within the limits of this or that terminological system.

  2. Genetic Algorithm and Fuzzy Tuning PID Controller Applied on Speed Control System for Marine Diesel Engines

    Directory of Open Access Journals (Sweden)

    Naeim Farouk

    2012-11-01

    Full Text Available The degree of speed control of ship machinery effects on the economics and optimization of the machinery configuration and operation. All marine vessel ranging need some sort of speed control system to control and govern the speed of the marine diesel engines. The main focus of this study is to apply and comparative between two specific soft-computing techniques. Fuzzy logic controller and genetic algorithm to design and tuning of PID controller for applied on speed control system of marine diesel engine to get an output with better dynamic and static performance. Simulation results show that the response of system when using genetic algorithm is better and faster than when using fuzzy tuning PID controller.

  3. QuickTime Virtual Reality Technology Applies to Practical Teaching Recording System

    Directory of Open Access Journals (Sweden)

    Yongyong Zhu

    2013-11-01

    Full Text Available QTVR is virtual reality technology which is based on static images and we apply it to practical teaching section. Through the practical teaching record system, virtual reality technology is applied to the whole journey of practical teaching. Give full play to the merits of strong sense of reality of the QTVR technology, good interactive performance, impressive immersive experience, convenience of produce and transmission, make seamless integration with the various present online teaching platforms, constitute comprehensive teaching material accumulation and resource utilization, uplift the quality of practical teaching, and promote students’ practical skills.

  4. Uncharted territory: A complex systems approach as an emerging paradigm in applied linguistics

    Directory of Open Access Journals (Sweden)

    Albert J Weideman

    2011-08-01

    Full Text Available Developing a theory of applied linguistics is a top priority for the discipline today. The emergence of a new paradigm - a complex systems approach - in applied linguistics presents us with a unique opportunity to give prominence to the development of a foundational framework for this design discipline. Far from being a mere philosophical exercise, such a framework will find application in the training and induction of new entrants into the discipline within the developing context of South Africa, as well as internationally.

  5. Best Available Technique (BAT) assessment applied to ACR-1000 waste and heavy water management systems

    International Nuclear Information System (INIS)

    The ACR-1000 design is the next evolution of the proven CANDU reactor design. One of the key objectives for this project was to systematically apply the As Low As Reasonably Achievable (ALARA) principle to the reactor design. The ACR design team selected the Best Available Technique (BAT) assessment for this purpose to document decisions made during the design of each ACR-1000 waste and heavy water management systems. This paper describes the steps in the BAT assessment that has been applied to the ACR-1000 design. (author)

  6. Robust design of reactor power control system with genetic algorithm-applied weighting functions

    International Nuclear Information System (INIS)

    The H∞ algorithms of the mixed weight sensitivity is used for the robust design of the reactor power control system. The mixed weight sensitivity method requires the selection of the proper weighting functions for the loop shaping in frequency domain. The complexity of the system equation and the non-convexity of the problem make it very difficult to determine the weighting functions. The genetic algorithm which is improved and hybridized with the simulated annealing is applied to determine the weighting functions. This approach permits an automatic calculation and the resultant system shows good robustness and performance. (author)

  7. Composite-system-stability-methods applied to advanced shipboard electric-power systems. Doctoral thesis

    Energy Technology Data Exchange (ETDEWEB)

    Amy, J.V.

    1992-05-01

    Large increases in the complexity of shipboard electric loads as well as development of electric drive, integrated electric drive and pulsed power systems make manifest the present and future importance of naval electric power systems. The most crucial attribute of these systems is their ability to fulfill their function in the presence of large-signal perturbations. Fundamental differences between shipboard and commercial electric power systems make all but the most general nonlinear, large-signal stability analyses inappropriate for the design and assessment of naval electric power systems. The tightly coupled and compact nature of shipboard systems are best accommodated by composite system stability analyses. Composite system methods, based upon Lyapunov's direct method, require that each component's stability be represented by a Lyapunov function. A new Lyapunov function which is based upon co-energy is developed for 3-phase synchronous machines. This use of co-energy is generalizable to all electromechanical energy conversion devices. The co-energy-based Lyapunov function is implemented as a stability organ which generates waveforms at information terminals of a device object in the object oriented simulation environment of WAVESIM. Single generator simulation results are used to acquire a measure of the over sufficiency of the co-energy-based Lyapunov function.

  8. Applying a Contest to Improve Learning in the Information Systems Development - An Interdisciplinary and Extracurricular Approach

    Directory of Open Access Journals (Sweden)

    Marcelo FANTINATO

    2011-10-01

    Full Text Available Contests are usually applied in the academic environment to simulate real professional situations that require from the participants a more pro-active attitude than the one shown in conventional coursework. Although they are commonly applied in the scope of a unique course, the contest described here was an extracurricular experience applied in an Information System undergraduate program. The evaluation of the contest is also presented; the objective was to assess the role of the contest as a tool to bring together interdisciplinary subjects, complementary to the traditional disciplinary structure of the program curriculum. The results indicate that a significant portion of the participants noticed increase in their knowledge after the contest, which is verified by statistical tests. However, students from the first stages received more benefits, probably because such students were more motivated and had more available time to be involved in the contest activities.

  9. Applying different quality and safety models in healthcare improvement work: Boundary objects and system thinking

    International Nuclear Information System (INIS)

    A number of theoretical models can be applied to help guide quality improvement and patient safety interventions in hospitals. However there are often significant differences between such models and, therefore, their potential contribution when applied in diverse contexts. The aim of this paper is to explore how two such models have been applied by hospitals to improve quality and safety. We describe and compare the models: (1) The Organizing for Quality (OQ) model, and (2) the Design for Integrated Safety Culture (DISC) model. We analyze the theoretical foundations of the models, and show, by using a retrospective comparative case study approach from two European hospitals, how these models have been applied to improve quality and safety. The analysis shows that differences appear in the theoretical foundations, practical approaches and applications of the models. Nevertheless, the case studies indicate that the choice between the OQ and DISC models is of less importance for guiding the practice of quality and safety improvement work, as they are both systemic and share some important characteristics. The main contribution of the models lay in their role as boundary objects directing attention towards organizational and systems thinking, culture, and collaboration

  10. Research on Key Techniques for Video Surveillance System Applied to Shipping Channel Management

    Institute of Scientific and Technical Information of China (English)

    WANG Lin; ZHUANG Yan-bin; ZHENG Cheng-zeng

    2007-01-01

    A video patrol and inspection system is an important part of the government's shipping channel information management. This system is mainly applied to video information gathering and processing as a patrol is carried out. The system described in this paper can preview, edit, and add essential explanation messages to the collected video data. It then transfers these data and messages to a video server for the leaders and engineering and technical personnel to retrieve, play, chart, download or print. Each department of the government will use the system's functions according to that department's mission. The system can provide an effective means for managing the shipping enterprise. It also provides a valuable reference for the modernizing of waterborne shipping.

  11. Software engineering techniques applied to agricultural systems an object-oriented and UML approach

    CERN Document Server

    Papajorgji, Petraq J

    2014-01-01

    Software Engineering Techniques Applied to Agricultural Systems presents cutting-edge software engineering techniques for designing and implementing better agricultural software systems based on the object-oriented paradigm and the Unified Modeling Language (UML). The focus is on the presentation of  rigorous step-by-step approaches for modeling flexible agricultural and environmental systems, starting with a conceptual diagram representing elements of the system and their relationships. Furthermore, diagrams such as sequential and collaboration diagrams are used to explain the dynamic and static aspects of the software system.    This second edition includes: a new chapter on Object Constraint Language (OCL), a new section dedicated to the Model-VIEW-Controller (MVC) design pattern, new chapters presenting details of two MDA-based tools – the Virtual Enterprise and Olivia Nova, and a new chapter with exercises on conceptual modeling.  It may be highly useful to undergraduate and graduate students as t...

  12. Design of digital adjustor applied to power supply system for HIRFL-CSR

    International Nuclear Information System (INIS)

    The control of power supply is the key point in the design of HIRFL-CSR system. Based on ARM + FPGA + AD/DA and state-space equation techniques, the design of digital adjustor applied in the power supply system for HIRFL-CSR in Lanzhou is realized. The digital adjustor can accomplish an adjustment control of fifth order and lower. ARM is used as the core of the control system to deal with the multi-threaded task and the precision of power adjustment control is implemented mainly by FPGA and AD/DA techniques. The embedded gigabit fiber interface can transmit the digital signal from external DSP board and the system uses optoelectronic isolator to inhibit interference signals for 32 bit input/output digital signals. Field test has proved that this digital adjustor can meet HIRFL-CSR's control precision requirement of 10-4 and reduce the recovery time of power system devices. (authors)

  13. Applying the ISO 9126 Model to the Evaluation of an E-learning System in Iran

    Directory of Open Access Journals (Sweden)

    Hossein Pedram

    2012-03-01

    Full Text Available One of the models presented in e-learning quality system field is ISO 9126 model, which applied in this research to evaluate e-learning system of Amirkabir University. This model system for evaluation, the six main variables provided that each of these variables by several other indicators was measured. Thus, the model parameters as ISO 9126 and turned the questionnaire survey among samples (120 experts and students of Amirkabir University and the distribution were completed. Based on the results between the electronic learning systems, Amirkabir University with each of the six-factor model of effective, direct and meaningful relationship exist. Also, based on the results, the system of e-learning in Amirkabir University was affected most respectively by maintainability, efficiency, portability, functionality, usability and reliability.

  14. Development of component geographic information systems applying in forest resources management

    Institute of Scientific and Technical Information of China (English)

    QI Hong; YU Su-fang; FAN Wen-yi

    2005-01-01

    The history, current situation, and development trend of GIS (Geographic Information System) applied in the forest resources management were discussed in this paper. On the basis of geographic spatial characteristics of forest resources data, a component geographic information system (ComGIS) was developed for forest resources management. The system embeds a GIS ActiveX control MapObjects (Inc. ESRI) on Visual C++ platform. System design, data organization and achieving way were studied and expatiated by taking Xigangzi Forestry Centre as study object. The system has many useful functions,, such as adding and display of various map layers, zoom of map by wheeling mouse, attribute and spatial data querying, map auto roaming, features rendering based on the spatial trait of data, label controlling through attribute data band with vector graph, as well as output of 'Column chart' for showing the result of statistics. At the same time, parts of source codes are attached.

  15. Photonic microsystems micro and nanotechnology applied to optical devices and systems

    CERN Document Server

    Solgaard, Olav

    2009-01-01

    ""Photonic Microsystems: Micro and Nanotechnology Applied to Optical Devices and Systems"", describes MEMS technology and demonstrates how MEMS allow miniaturization, parallel fabrication, and efficient packaging of optics, as well as integration of optics and electronics. It shows how the characteristics of MEMS enable practical implementations of a variety of applications, including projection displays, fiber switches, interferometers, spectrometers. The book describes the phenomenon of Photonic crystals (nanophotonics) and demonstrates how Photonic crystals enable synthesis of materials wit

  16. APPLY GEOGRAPHIC INFORMATION SYSTEM OF RETAIL TO COMMERCE PLANNING --AN EXAMPLE OF SHINAN DISTRICT IN QINGDAO

    OpenAIRE

    2007-01-01

    Geographic Information System of retail can provide a most convenient technical means for modern commerce planning,meantime improve the level of science decision and its modernization. Based on the analysis of applying GIS of retail to Shinan Districts commerce planning in Qingdao, the paper demonstrates the importance of GIS of retail in urban commerce planning, promote the rational layout of stores and avoid squandering resources of society.

  17. Database Security System for Applying Sophisticated Access Control via Database Firewall Server

    OpenAIRE

    Eun-Ae Cho; Chang-Joo Moon; Dae-Ha Park; Kang-Bin Yim

    2014-01-01

    Database security, privacy, access control, database firewall, data break masking Recently, information leakage incidents have occurred due to database security vulnerabilities. The administrators in the traditional database access control methods grant simple permissions to users for accessing database objects. Even though they tried to apply more strict permissions in recent database systems, it was difficult to properly adopt sophisticated access control policies to commercial databases...

  18. Construction of a system to be applied for the determination of the half-life time

    International Nuclear Information System (INIS)

    The measurement of the half-life time of a certain excited level is useful in the study of the energy transfer mechanism. A new system is proposed to be applied for the half-life time measurement of the first excited levels of rare earths. The results obtained are used in the probability calculation of non-radiactive transitions for these same elements. (M.A.)

  19. Piecewise Deterministic Markov Processes based approach applied to an offshore oil production system

    International Nuclear Information System (INIS)

    This paper is keeping with the topic of two papers which treated dynamic reliability problems and were presented in previous conferences. Its aim is to confirm the potentialities of a method which combines the high modeling ability of the piecewise deterministic processes and the great computing power inherent to the Monte Carlo simulation. This method is now applied to a simplified but realistic offshore oil production system which is a hybrid system combining continuous-time and discrete-time dynamics. The results thus obtained have been compared with those given by an ad hoc Petri net model for comparison and validation purposes

  20. 2nd International Doctoral Symposium on Applied Computation and Security Systems

    CERN Document Server

    Cortesi, Agostino; Saeed, Khalid; Chaki, Nabendu

    2016-01-01

    The book contains the extended version of the works that have been presented and discussed in the Second International Doctoral Symposium on Applied Computation and Security Systems (ACSS 2015) held during May 23-25, 2015 in Kolkata, India. The symposium has been jointly organized by the AGH University of Science & Technology, Cracow, Poland; Ca’ Foscari University, Venice, Italy and University of Calcutta, India. The book is divided into volumes and presents dissertation works in the areas of Image Processing, Biometrics-based Authentication, Soft Computing, Data Mining, Next Generation Networking and Network Security, Remote Healthcare, Communications, Embedded Systems, Software Engineering and Service Engineering.

  1. Optimization of China´s centralized domestic hot water system by applying Danish elements

    DEFF Research Database (Denmark)

    Zhang, Lipeng; Gudmundsson, Oddgeir; Thorsen, Jan Eric;

    2014-01-01

    Regardless of where they are in the world, people depend on a reliable and sufficient supply of domestic hot water (DHW) for daily use. Some countries that have district heating (DH) infrastructure, such as Denmark and China, combine spacing heating (SH) and DHW together, with the aim of having a...... smart, energy efficient and environmentally friendly energy-consumption system. Nevertheless, the development of centralized DHW (CDHW) systems in these two countries differs significantly. This article details the challenges China’s CDHW system is currently encountering and proposes to apply the flat...... station concept to improve China’s CDHW system. Meanwhile, the technical advantages of the Danish CDHW, which would benefit China, are analyzed. Overall, from a technical point of view, the flat station concept is not only in line with China’s current DH conditions but would compensate for some technical...

  2. Optimization of China's centralized domestic hot water system by applying Danish elements

    DEFF Research Database (Denmark)

    Zhang, Lipeng; Gudmundsson, Oddgeir; Thorsen, Jan Eric;

    2014-01-01

    Regardless of where they are in the world, people depend on a reliable and sufficient supply of domestic hot water (DHW) for daily use. Some countries that have district heating (DH) infrastructure, such as Denmark and China, combine spacing heating (SH) and DHW together, with the aim of having a...... smart, energy efficient and environmentally friendly energy-consumption system. Nevertheless, the development of centralized DHW (CDHW) systems in these two countries differs significantly. This article details the challenges China's CDHW system is currently encountering and proposes to apply the flat...... station concept to improve China's CDHW system. Meanwhile, the technical advantages of the Danish CDHW, which would benefit China, are analyzed. Overall, from a technical point of view, the flat station concept is not only in line with China's current DH conditions but would compensate for some technical...

  3. A systematic review of applying modern software engineering techniques to developing robotic systems

    Directory of Open Access Journals (Sweden)

    Claudia Pons

    2012-04-01

    Full Text Available Robots have become collaborators in our daily life. While robotic systems become more and more complex, the need to engineer their software development grows as well. The traditional approaches used in developing these software systems are reaching their limits; currently used methodologies and tools fall short of addressing the needs of such complex software development. Separating robotics’ knowledge from short-cycled implementation technologies is essential to foster reuse and maintenance. This paper presents a systematic review (SLR of the current use of modern software engineering techniques for developing robotic software systems and their actual automation level. The survey was aimed at summarizing existing evidence concerning applying such technologies to the field of robotic systems to identify any gaps in current research to suggest areas for further investigation and provide a background for positioning new research activities.

  4. Greedy Algorithm Applied to Relay Selection for Cooperative Communication Systems in Amplify-and-Forward Mode

    Institute of Scientific and Technical Information of China (English)

    Cheng-Ying Yang; Yi-Shan Lin; Jyh-Horng Wen

    2014-01-01

    Using a relaying system to provide spatial diversity and improve the system performance is a tendency in the wireless cooperative communications. Amplify-and-forward (AF) mode with a low complexity is easy to be implemented. Under the consideration of cooperative communication systems, the scenario includes one information source, M relay stations and N destinations. This work proposes a relay selection algorithm in the Raleigh fading channel. Based on the exhaustive search method, easily to realize, the optimal selection scheme can be found with a highly complicated calculation. In order to reduce the computational complexity, an approximate optimal solution with a greedy algorithm applied for the relay station selection is proposed. With different situations of the communication systems, the performance evaluation obtained by both the proposed algorithm and the exhaustive search algorithm are given for comparison. It shows the proposed algorithm could provide a solution approach to the optimal one.

  5. Applying Systems Thinking to Examine and Reduce Dependency on Food Banks

    Directory of Open Access Journals (Sweden)

    Juwaeriah Abdussamad

    2014-01-01

    Full Text Available Systems thinking is the art of understanding interconnections between various disciplines thereby unwinding the existing complexity. Most of the real world problems are complex, take for the example the increasing dependency rate on food banks. While various factors contribute towards it, not much has been done to bring the take off the number of dependents. By viewing this system from a holistic systems thinking lens, one explores the issue in depth. We realise the universally acceptable solution is not alleviating the problem in the long run. By applying systems thinking principles several hidden factors are brought to attention and subsequently can be dealt with more aptly. A movement that transcends disciplines results in delivering better solutions.

  6. Econometrics analysis of consumer behaviour: a linear expenditure system applied to energy

    International Nuclear Information System (INIS)

    In economics literature the expenditure system specification is a well known subject. The problem is to define a coherent representation of consumer behaviour through functional forms easy to calculate. In this work it is used the Stone-Geary Linear Expenditure System and its multi-level decision process version. The Linear Expenditure system is characterized by an easy calculating estimation procedure, and its multi-level specification allows substitution and complementary relations between goods. Moreover, the utility function separability condition on which the Utility Tree Approach is based, justifies to use an estimation procedure in two or more steps. This allows to use an high degree of expenditure categories disaggregation, impossible to reach the Linear Expediture System. The analysis is applied to energy sectors

  7. Study of fieldbus technology confiability when applied in a Sterilization plant control and safety systems

    International Nuclear Information System (INIS)

    Several sterilization processes have been used in these years for treatment of countless products. Some processes use high temperatures, thermal shocks and chemical agents. With the discovery of the ionizing radiation and its posterior technological developments turned possible the application of that process, in 1960, also in the sterilization, denominated radiation sterilization. This process became also applied in another areas of health and industrial as food conservation, gemstones enhancement and others. The radiation sterilization requests an effective control and it needs a high level of safety. The commercial use of the computers applied in industrial automation provides and the domain of new technologies in this field provides news applications then new designs now is possible. The Fieldbus technology, a new digital communication protocol, like a Local Area Network, can be an alternative in the cobalt-60 irradiation plant. This paper show preliminary study about confiability in systems using Fieldbus technology. This technology was simulated in sterilization plant control and safety systems and the fail probability was quantified using Fail Tree Analysis Method. Fieldbus technology can be used in sterilization plants because the confiability in this systems is like PLCs and relays systems, was the conclusion

  8. RFI analysis applied to the TDRSS system. [Tracking and Data Relay Satellite System performance

    Science.gov (United States)

    Jenny, J. A.

    1973-01-01

    The effect of radio frequency interference (RFI) on the proposed Tracking and Data Relay Satellite System (TDRSS) was assessed. The method of assessing RFI was to create a discrete emitter listing containing all the required parameters of transmitters in the applicable VHF and UHF frequency bands. The transmitter and spacecraft receiver characteristics were used to calculate the RFI contribution due to each emitter. The individual contributions were summed to obtain the total impact in the operational bandwidth. Using an as yet incomplete emitter base, it is concluded that the 136- to 137-MHz band should be used by TDRSS rather than the whole 136- to 138-MHz band because of the higher interference levels in the 137- to 138 MHz band. Even when restricting the link to 136 to 137 MHz, the existing link design is marginal, and it is recommended that interference reduction units, such as the adaptive digital filter, be incorporated in the TDRSS ground station.

  9. Toward a universal theory of the human group: sociological systems framework applied to the comparative analysis of groups and organizations

    OpenAIRE

    Tom R. Burns; Machado, Nora; Corte, Ugo

    2014-01-01

    Drawing on a sociological multi-level, dynamic systems approach – actor-system-dynamics (ASD) -- which has been developed and applied in institutional, organizational, and societal analyses, we formulate a general model for the comparative analysis of social groups and organizations. This social systems approach has not been previously applied in the group area. We claim that the approach can be systematically and fruitfully applied to small as well as large groups and organiza...

  10. Feasibility study of applying the passive safety system concept to fusion–fission hybrid reactor

    International Nuclear Information System (INIS)

    The fusion–fission hybrid reactor can produce energy, breed nuclear fuel, and handle the nuclear waste, etc., with the fusion neutron source striking the subcritical blanket. The passive safety system consists of passive residual heat removal system, passive safety injection system and automatic depressurization system was adopted into the fusion–fission hybrid reactor in this paper. Modeling and nodalization of primary loop, partial secondary loop and passive core cooling system for the fusion–fission hybrid reactor using relap5 were conducted and small break LOCA on cold leg was analyzed. The results of key transient parameters indicated that the actuation of passive safety system could mitigate the accidental consequence of the 4-inch cold leg small break LOCA on cold leg in the early time effectively. It is feasible to apply the passive safety system concept to fusion–fission hybrid reactor. The minimum collapsed liquid level had great increase if doubling the volume of CMTs to increase its coolant injection and had no increase if doubling the volume of ACCs

  11. ANALYSIS OF A WEB INFORMATION SYSTEM APPLIED MANAGEMENT SCHOOL OF COMPUTING

    Directory of Open Access Journals (Sweden)

    ROGER CRISTHIAN GOMES

    2010-01-01

    Full Text Available One of the tasks of an entrepreneur is choose a computerized information system for the management of your business, regardless of their size and field of expertise. Having to determine if the information system will be modeling for local use, also known as standalone, or developed for the web, is becoming increasingly common, as the Internet, with its characteristics, greatly facilitates the work of the manager. However, can not simply deduct or take into account only the technological trends and market to resolve an issue that will require in the form of operation, administration and management. To choose between one or another type of system is necessary to examine the advantages and disadvantages of each model in relation to the business in question. This study aimed to list the main features intrinsic to web and stand-alone applications. The study of these two types of applications was based on analysis of an information system applied to a company to provide services in computer training. For the analysis of the information system were carried out a survey of the main requirements and modeling of a prototype. It was proposed to develop the system in a web environment, using the JAVA platform with the database manager MySQL, because the tools are complete, well documented, free, and with features that help to ensure the functionality and quality of the information system web.

  12. An evaluation of an operating BWR piping system damping during earthquake by applying auto regressive analysis

    International Nuclear Information System (INIS)

    The observation of the equipment and piping system installed in an operating nuclear power plant in earthquakes is very umportant for evaluating and confirming the adequacy and the safety margin expected in the design stage. By analyzing observed earthquake records, it can be expected to get the valuable data concerning the behavior of those in earthquakes, and extract the information about the aseismatic design parameters for those systems. From these viewpoints, an earthquake observation system was installed in a reactor building in an operating plant. Up to now, the records of three earthquakes were obtained with this system. In this paper, an example of the analysis of earthquake records is shown, and the main purpose of the analysis was the evaluation of the vibration mode, natural frequency and damping factor of this piping system. Prior to the earthquake record analysis, the eigenvalue analysis for this piping system was performed. Auto-regressive analysis was applied to the observed acceleration time history which was obtained with a piping system installed in an operating BWR. The results of earthquake record analysis agreed well with the results of eigenvalue analysis. (Kako, I.)

  13. Galvanic Liquid Applied Coating System For Protection of Embedded Steel Surfaces from Corrosion

    Science.gov (United States)

    Curran, Joseph; Curran, Jerome; Voska, N. (Technical Monitor)

    2002-01-01

    Corrosion of reinforcing steel in concrete is an insidious problem facing Kennedy Space Center (KSC), other Government Agencies, and the general public. These problems include KSC launch support structures, highway bridge infrastructure, and building structures such as condominium balconies. Due to these problems, the development of a Galvanic Liquid Applied Coating System would be a breakthrough technology having great commercial value for the following industries: Transportation, Infrastructure, Marine Infrastructure, Civil Engineering, and the Construction Industry. This sacrificial coating system consists of a paint matrix that may include metallic components, conducting agents, and moisture attractors. Similar systems have been used in the past with varying degrees of success. These systems have no proven history of effectiveness over the long term. In addition, these types of systems have had limited success overcoming the initial resistance between the concrete/coating interface. The coating developed at KSC incorporates methods proven to overcome the barriers that previous systems could not achieve. Successful development and continued optimization of this breakthrough system would produce great interest in NASA/KSC for corrosion engineering technology and problem solutions. Commercial patents on this technology would enhance KSC's ability to attract industry partners for similar corrosion control applications.

  14. A study of penetration test for applying a remote monitoring system for virtual private network

    International Nuclear Information System (INIS)

    A penetration test has been performed to verify the vulnerability of Virtual Private Network that is substitute for communication method of an existing remote monitoring system. An existing RMS was used for the private telephone and the RMS was applied of all PWR in Korea. But, due to communication fee, IAEA wanted to replace current telephone line to the internet line to reduce transmission cost in operating remote monitoring system. The communication cost of telephone line was estimated about $66,000/yr. Internet technology would reduce the operating cost up to 1/5. The purpose of the penetration test was to demonstrate the security of the data and system against both various external and internal hacking scenarios. In most cases, hacker could not even identify the VPN system. In any cases, the system did not allow the access of the hacker to the system needless to say the data alteration or system shutdown. Two kinds of test method is chosen; one is external attack and another is internal attack. During the test, the hacking tool was used. The result of test was proved that VPN was secure against internal/external attack

  15. Sender-receiver systems and applying information theory for quantitative synthetic biology.

    Science.gov (United States)

    Barcena Menendez, Diego; Senthivel, Vivek Raj; Isalan, Mark

    2015-02-01

    Sender-receiver (S-R) systems abound in biology, with communication systems sending information in various forms. Information theory provides a quantitative basis for analysing these processes and is being applied to study natural genetic, enzymatic and neural networks. Recent advances in synthetic biology are providing us with a wealth of artificial S-R systems, giving us quantitative control over networks with a finite number of well-characterised components. Combining the two approaches can help to predict how to maximise signalling robustness, and will allow us to make increasingly complex biological computers. Ultimately, pushing the boundaries of synthetic biology will require moving beyond engineering the flow of information and towards building more sophisticated circuits that interpret biological meaning. PMID:25282688

  16. Dynamic Tracking with Zero Variation and Disturbance Rejection Applied to Discrete-Time Systems

    Directory of Open Access Journals (Sweden)

    Renato de Aguiar Teixeira Mendes

    2010-01-01

    Full Text Available The problem of signal tracking in discrete linear time invariant systems, in the presence of a disturbance signal in the plant, is solved using a new zero-variation methodology. A discrete-time dynamic output feedback controller is designed in order to minimize the H∞ norm between the exogen input and the output signal of the system, such that the effect of the disturbance is attenuated. Then, the zeros modification is used to minimize the H∞ norm from the reference input signal to the error signal. The error is taken as the difference between the reference and the output signal. The proposed design is formulated in linear matrix inequalities (LMIs framework, such that the optimal solution of the stated problem is obtained. The method can be applied to plants with delay. The control of a delayed system illustrates the effectiveness of the proposed method.

  17. Introduction of the SPANS Geographic Information System in the Applied Geoscience Branch

    Energy Technology Data Exchange (ETDEWEB)

    Ejeckam, R.B.

    1992-09-01

    A Geographic Information System (GIS) called the Spatial ANalysis System (SPANS) has been in use in the Geology Section of the Applied Geoscience Branch since 1990 September. The background for the operation and application of a GIS is discussed, and the specific introduction and setup of SPANS in the Geology Section are provided in detail. The major components of SPANS, including raster, vector and quadtree data structures, data input, classifications, interpolations, and other operational procedures are described. This introduction draws examples from the literature, from work done by the Geology Section, and from the SPANS manuals. This report does not cover all the capabilities of SPANS, but is intended as an introduction to the operation of such a system.

  18. Quantitative Feedback Theory (QFT) applied to the design of a rotorcraft flight control system

    Science.gov (United States)

    Hess, R. A.; Gorder, P. J.

    1992-01-01

    Quantitative Feedback Theory describes a frequency-domain technique for the design of multi-input, multi-output control systems which meet time or frequency domain performance criteria when specified uncertainty exists in the linear description of the vehicle dynamics. Quantitative Feedback Theory is applied to the design of the longitudinal flight control system for a linear uncertain model of the AH-64 rotorcraft. In this model, the uncertainty is assigned, and is assumed to be attributable to actual uncertainty in the dynamic model and to the changes in the vehicle aerodynamic characteristics which occur near hover. The model includes an approximation to the rotor and actuator dynamics. The design example indicates the manner in which handling qualities criteria may be incorporated into the design of realistic rotorcraft control systems in which significant uncertainty exists in the vehicle model.

  19. Applying system engineering methods to site characterization research for nuclear waste repositories

    International Nuclear Information System (INIS)

    Nuclear research and engineering projects can benefit from the use of system engineering methods. This paper is brief overview illustrating how system engineering methods could be applied in structuring a site characterization effort for a candidate nuclear waste repository. System engineering is simply an orderly process that has been widely used to transform a recognized need into a fully defined system. Such a system may be physical or abstract, natural or man-made, hardware or procedural, as is appropriate to the system's need or objective. It is a way of mentally visualizing all the constituent elements and their relationships necessary to fulfill a need, and doing so compliant with all constraining requirements attendant to that need. Such a system approach provides completeness, order, clarity, and direction. Admittedly, system engineering can be burdensome and inappropriate for those project objectives having simple and familiar solutions that are easily held and controlled mentally. However, some type of documented and structured approach is needed for those objectives that dictate extensive, unique, or complex programs, and/or creation of state-of-the-art machines and facilities. System engineering methods have been used extensively and successfully in these cases. The scientific methods has served well in ordering countless technical undertakings that address a specific question. Similarly, conventional construction and engineering job methods will continue to be quite adequate to organize routine building projects. Nuclear waste repository site characterization projects involve multiple complex research questions and regulatory requirements that interface with each other and with advanced engineering and subsurface construction techniques. There is little doubt that system engineering is an appropriate orchestrating process to structure such diverse elements into a cohesive, well defied project

  20. A methodological framework applied to the choice of the best method in replacement of nuclear systems

    International Nuclear Information System (INIS)

    The economic equipment replacement problem is a central question in Nuclear Engineering. On the one hand, new equipment are more attractive given their best performance, better reliability, lower maintenance cost etc. New equipment, however, require a higher initial investment. On the other hand, old equipment represent the other way around, with lower performance, lower reliability and specially higher maintenance costs, but in contrast having lower financial and insurance costs. The weighting of all these costs can be made with deterministic and probabilistic methods applied to the study of equipment replacement. Two types of distinct problems will be examined, substitution imposed by the wearing and substitution imposed by the failures. In order to solve the problem of nuclear system substitution imposed by wearing, deterministic methods are discussed. In order to solve the problem of nuclear system substitution imposed by failures, probabilistic methods are discussed. The aim of this paper is to present a methodological framework to the choice of the most useful method applied in the problem of nuclear system substitution.(author)

  1. NATO International Conference on Applied General Systems Research : Recent Developments and Trends

    CERN Document Server

    1978-01-01

    This volume consists of a selection of papers presented at the International Conference on Applied General Systems Research: Recent Developments and Trends which was held on the campus of the State University of New York at Binghamton in August 15-19, 1977, under the sponsorship of the Special Panel on Systems Science of the NATO Scientific Affairs Division. General systems research is a fairly new field which has been developing in the course of the last two or three decades. In my op~n10n, it can be best described as a movement which involves the study of all structural and context independent aspects of problem solving. As such, it is cross-disciplinary in nature and, in this sense, it might seem similar to mathematics. There is a consid­ erable difference, however, between the two. While pure mathe­ matics is basically oriented to the development of various axiomatic theories, regardless of whether or not they have any real world meaning, applied mathematics explores the applicability of some of these t...

  2. New infrared radiation temperature measurement system applied to the Laser Flash Method

    International Nuclear Information System (INIS)

    The laser flash method is based on measuring the temperature transient. The effect of the thermal inertia of the temperature measurement system is not negligible and cannot be ignored due to the fast dynamics of the measured thermal transient. This paper presents the new infrared radiation temperature measurement system applied to the thermal diffusivity measurements based on the laser flash method. The developed system consists in a detector cooled in liquid nitrogen, collimating lenses and a mathematical modeling developed in LabView. As a result, the generated electrical signal is converted into temperature. A detailed description of this new temperature measurement system is presented, as well as its mathematical model, computational implementation and calibration. For validate the new system, reference samples of homogeneous materials (Pyroceram 9606 and Inconel 600) were tested and the results of thermal diffusivities were compared with its reference certificates. The thermal diffusivity values measured by using the new system are in agreement with reference values, with less than 2 % of relative deviation

  3. Renormalization techniques applied to the study of density of states in disordered systems

    International Nuclear Information System (INIS)

    A general scheme for real space renormalization of formal scattering theory is presented and applied to the calculation of density of states (DOS) in some finite width systems. This technique is extended in a self-consistent way, to the treatment of disordered and partially ordered chains. Numerical results of moments and DOS are presented in comparison with previous calculations. In addition, a self-consistent theory for the magnetic order problem in a Hubbard chain is derived and a parametric transition is observed. Properties of localization of the electronic states in disordered chains are studied through various decimation averaging techniques and using numerical simulations. (author)

  4. Induction Heating System Applied to Injection Moulding of Micro and Nano Structures

    DEFF Research Database (Denmark)

    Menotti, Stefano

    The present Ph.D. thesis contains a study concerning induction heating system applied to injection moulding of micro and nano structures. The overall process chain was considered and investigated during the project including part design, simulation, conventional and non-conventional tooling...... part. In fact one of the main problems in micro injection moulding is the premature freezing of the polymer flow inside the cavity and often is not possible to obtain a full replica of the nano/micro structures embed on the surfaces. Some other defects that can be avoided with the use of an additional...

  5. Applying a Stochastic Financial Planning System to an Individual: Immediate or Deferred Life Annuities?

    DEFF Research Database (Denmark)

    Konicz, Agnieszka Karolina; Mulvey, John M.

    2013-01-01

    Individuals are often faced with financial decisions that have long-term implications for themselves and their families, but they have few sources of unbiased assistance. The authors suggest that a stochastic financial planning system, properly constructed and calibrated, can be applied to a number...... of such financial decisions, especially in the retirement arena. They present as an example the choice to purchase a life annuity for a middle-aged person. Buyers must choose whether to purchase before retirement or at the date of retirement. The article provides some guidelines on whether or not to...

  6. Implementation of a Fuzzy Logic System to Tune a PI Controller Applied to an Induction Motor

    Directory of Open Access Journals (Sweden)

    LAROUSSI, K.

    2009-10-01

    Full Text Available The simplicity of traditional regulators makes them popular and the most used solution in the nowadays industry. However, they suffer from some limitations and cannot deal with nonlinear dynamics and system parameters variation. In the literature, several strategies of adaptation are developed to alleviate these limitations. In this paper, we propose a combination of two strategies for PI parameters supervision and adaptation. We apply the obtained structure to the control of induction machine speed. Simulation and experimental results of the proposed schema show good performances as compared to two strategies.

  7. Study of applying a hybrid standalone wind-photovoltaic generation system

    Directory of Open Access Journals (Sweden)

    Aissa Dahmani

    2015-01-01

    Full Text Available The purpose of this paper is the study of applying a hybrid system wind/photovoltaic to supply a community in southern Algeria. Diesel generators are always used to provide such remote regions with energy. Using renewable energy resources is a good alternative to overcome such pollutant generators. Hybrid Optimization Model for Electric Renewable (HOMER software is used to determine the economic feasibility of the proposed configuration. Assessment of renewable resources consisting in wind and solar potentials, load profile determination and sensitivity of different parameters analysis were performed. The cost of energy (COE of 0.226 $/kWh is very competitive with those found in literature.

  8. Multiclassifier system with hybrid learning applied to the control of bioprosthetic hand.

    Science.gov (United States)

    Kurzynski, Marek; Krysmann, Maciej; Trajdos, Pawel; Wolczowski, Andrzej

    2016-02-01

    In this paper the problem of recognition of the intended hand movements for the control of bio-prosthetic hand is addressed. The proposed method is based on recognition of electromiographic (EMG) and mechanomiographic (MMG) biosignals using a multiclassifier system (MCS) working in a two-level structure with a dynamic ensemble selection (DES) scheme and original concepts of competence function. Additionally, feedback information coming from bioprosthesis sensors on the correct/incorrect classification is applied to the adjustment of the combining mechanism during MCS operation through adaptive tuning competences of base classifiers depending on their decisions. Three MCS systems operating in decision tree structure and with different tuning algorithms are developed. In the MCS1 system, competence is uniformly allocated to each class belonging to the group indicated by the feedback signal. In the MCS2 system, the modification of competence depends on the node of decision tree at which a correct/incorrect classification is made. In the MCS3 system, the randomized model of classifier and the concept of cross-competence are used in the tuning procedure. Experimental investigations on the real data and computer-simulated procedure of generating feedback signals are performed. In these investigations classification accuracy of the MCS systems developed is compared and furthermore, the MCS systems are evaluated with respect to the effectiveness of the procedure of tuning competence. The results obtained indicate that modification of competence of base classifiers during the working phase essentially improves performance of the MCS system and that this improvement depends on the MCS system and tuning method used. PMID:25982067

  9. Long-term bond strength of adhesive systems applied to etched and deproteinized dentin

    Directory of Open Access Journals (Sweden)

    Ninoshka Uceda-Gómez

    2007-12-01

    Full Text Available The aim of this study was to evaluate the early and 12-month bond strength of two adhesive systems (Single Bond-SB and One Step-OS applied to demineralized dentin (WH and demineralized/NaOCl-treated dentin (H. Twenty flat dentin surfaces were exposed, etched, rinsed and slightly dried. For the H groups, a solution of 10% NaOCl was applied for 60 s, rinsed (15 s and slightly dried. The adhesives were applied according to the manufacturer's instructions and composite resin crowns were incrementally constructed. After 24 h (water-37ºC, the specimens was sectioned in order to obtain resin-dentin sticks (0.8 mm². The specimens were tested in microtensile (0.5 mm/min immediately (IM or after 12 months of water storage (12M. The data (MPa were subjected to ANOVA and Tukey's test (a=0.05. Only the main factors adhesive and time were significant (p=0.004 and p=0.003, respectively. SB (42.3±9.1 showed higher bond strengths than OS (33.6±11.6. The mean bond strength for IM-group (42.5±8.7 was statistically superior to 12M (33.3±11.8. The use of 10% NaOCl, after acid etching, did not improve the immediate and the long-term resin-dentin bond strength.

  10. Environment-oriented life cycle analysis of bulk materials, applied in solar cell systems

    International Nuclear Information System (INIS)

    In the solar cell technology several bulk materials (glass, steel, aluminium, concrete, copper, zinc and synthetic materials) are applied intensively. By means of a life cycle analysis (LCA) the environmental effects and bottlenecks of the use of these materials is investigated in this report. Also attention is paid to the options to reduce the environmental effects of photovoltaic (PV) systems by changing processes and/or by redesign of the PV systems. Two systems are studied: solar cells, integrated in pitched roofs, and solar cells on the ground in solar cell arrays. The study is focused on the use of bulk materials in the solar module, the cables and the supporting construction. After brief introductions on the environment-oriented LCA method, the standard construction of PV modules and the principles of solar cells, an overview is given of the present and future material input for the above-mentioned PV-systems. Next, attention is paid to the energy consumption and the most important emissions of the production of the bulk materials. Based on these data three environmental effect scores of the PV systems are calculated and analyzed: the energy consumption, the greenhouse effect or global warming equivalent, and the acidifying effect or acidification equivalent. Also a fourth effect, for which the so-called environmental indicator human toxicity is defined, is described. By means of this indicator the hazardous effects for the public health can be indicated. The sum of the four indicators is a measure for the environmental profile of the roof PV-system and the ground PV-array system. Recommendations are given by which the systems and their environmental profiles can be improved. 29 figs., 50 tabs., 5 appendices, refs

  11. Success Factors of European Syndromic Surveillance Systems: A Worked Example of Applying Qualitative Comparative Analysis.

    Directory of Open Access Journals (Sweden)

    Alexandra Ziemann

    Full Text Available Syndromic surveillance aims at augmenting traditional public health surveillance with timely information. To gain a head start, it mainly analyses existing data such as from web searches or patient records. Despite the setup of many syndromic surveillance systems, there is still much doubt about the benefit of the approach. There are diverse interactions between performance indicators such as timeliness and various system characteristics. This makes the performance assessment of syndromic surveillance systems a complex endeavour. We assessed if the comparison of several syndromic surveillance systems through Qualitative Comparative Analysis helps to evaluate performance and identify key success factors.We compiled case-based, mixed data on performance and characteristics of 19 syndromic surveillance systems in Europe from scientific and grey literature and from site visits. We identified success factors by applying crisp-set Qualitative Comparative Analysis. We focused on two main areas of syndromic surveillance application: seasonal influenza surveillance and situational awareness during different types of potentially health threatening events.We found that syndromic surveillance systems might detect the onset or peak of seasonal influenza earlier if they analyse non-clinical data sources. Timely situational awareness during different types of events is supported by an automated syndromic surveillance system capable of analysing multiple syndromes. To our surprise, the analysis of multiple data sources was no key success factor for situational awareness.We suggest to consider these key success factors when designing or further developing syndromic surveillance systems. Qualitative Comparative Analysis helped interpreting complex, mixed data on small-N cases and resulted in concrete and practically relevant findings.

  12. Success Factors of European Syndromic Surveillance Systems: A Worked Example of Applying Qualitative Comparative Analysis

    Science.gov (United States)

    Ziemann, Alexandra; Fouillet, Anne; Brand, Helmut; Krafft, Thomas

    2016-01-01

    Introduction Syndromic surveillance aims at augmenting traditional public health surveillance with timely information. To gain a head start, it mainly analyses existing data such as from web searches or patient records. Despite the setup of many syndromic surveillance systems, there is still much doubt about the benefit of the approach. There are diverse interactions between performance indicators such as timeliness and various system characteristics. This makes the performance assessment of syndromic surveillance systems a complex endeavour. We assessed if the comparison of several syndromic surveillance systems through Qualitative Comparative Analysis helps to evaluate performance and identify key success factors. Materials and Methods We compiled case-based, mixed data on performance and characteristics of 19 syndromic surveillance systems in Europe from scientific and grey literature and from site visits. We identified success factors by applying crisp-set Qualitative Comparative Analysis. We focused on two main areas of syndromic surveillance application: seasonal influenza surveillance and situational awareness during different types of potentially health threatening events. Results We found that syndromic surveillance systems might detect the onset or peak of seasonal influenza earlier if they analyse non-clinical data sources. Timely situational awareness during different types of events is supported by an automated syndromic surveillance system capable of analysing multiple syndromes. To our surprise, the analysis of multiple data sources was no key success factor for situational awareness. Conclusions We suggest to consider these key success factors when designing or further developing syndromic surveillance systems. Qualitative Comparative Analysis helped interpreting complex, mixed data on small-N cases and resulted in concrete and practically relevant findings. PMID:27182731

  13. Advanced model structures applied to system identification of a servo- hydraulic test rig

    Directory of Open Access Journals (Sweden)

    P. Czop

    2010-07-01

    Full Text Available Purpose: This paper deals with a method for the parametric system identification of a nonlinear system to obtain its parametric representation using a linear transfer function. Such representation is applicable in off-line profile correction methods minimizing the error between a reference input signal and a signal performed by the test rig. In turn, a test signal can be perfectly tracked by a servo-hydraulic test rig. This is the requirement in massive production where short test sequences are repeated to validate the products.Design/methodology/approach: A numerical and experimental case studies are presented in the paper. The numerical study presents a system identification process of a nonlinear system consisting of a linear transfer function and a nonlinear output component, being a static function. The experimental study presents a system identification process of a nonlinear system which is a servo-hydraulic test rig. The simulation data has been used to illustrate the feasibility study of the proposed approach, while the experimental data have been used to validate advanced model structures under operational conditions.Findings: The advanced model structures confirmed their better performance by means of the model fit in the time domain.Research limitations/implications: The method applies to analysis of such mechanical and hydraulic systems for which measurements are corrupted by residual harmonic disturbances resulting from system nonlinearities.Practical implications: The advanced model structures are intended to be used as inverse models in off-line signal profile correction.Originality/value: The results state the foundation for the off-line parametric error cancellation method which aims in improving tracking of load signals on servo-hydraulic test rigs.

  14. KRON's Method Applied to the Study of Electromagnetic Interference Occurring in Aerospace Systems

    Science.gov (United States)

    Leman, S.; Reineix, A.; Hoeppe, F.; Poiré, Y.; Mahoudi, M.; Démoulin, B.; Üstüner, F.; Rodriquez, V. P.

    2012-05-01

    In this paper, spacecraft and aircraft mock-ups are used to simulate the performance of KRON based tools applied to the simulation of large EMC systems. These tools aim to assist engineers in the design phase of complex systems. This is done by effectively evaluating the EM disturbances between antennas, electronic equipment, and Portable Electronic Devices found in large systems. We use a topological analysis of the system to model independent sub-volumes such as antennas, cables, equipments, PED and cavity walls. Each of these sub- volumes is modelled by an appropriate method which can be based on, for example, analytical expressions, transmission line theory or other numerical tools such as the full wave FDFD method. This representation associated with the electrical tensorial method of G.KRON leads to reasonable simulation times (typically a few minutes) and accurate results. Because equivalent sub-models are built separately, the main originality of this method is that each sub- volume can be easily replaced by another one without rebuilding the entire system. Comparisons between measurements and simulations will be also presented.

  15. CASE STUDY OF THE OPTIMIZING THE AUTOMOTIVE MANUFACTURING SYSTEMS EFFICIENCY VIA APPLYING NEW METHOD OF SCHEDULING

    Directory of Open Access Journals (Sweden)

    Seyedehfarzaneh Nojabaei

    2014-01-01

    Full Text Available Efficiency is becoming a pivotal aspect in each manufacturing system and scheduling plays a crucial role in sustaining it. The applicability of distributed computing to coordinate and execute jobs has been investigated in the past literature. Moreover, it is significant that even for sensitive industrial systems the only criterion of allocating jobs to appropriate machines is the FIFO policy. On the other flip, many researchers are of the opinion that the main reason behind failing to provide fairness in distributed systems is considering the only criterion of time stamp to judge upon and form the queue of jobs with the aim of allocating those jobs to the machines. In order to increase the efficiency of sensitive industrial system, this study takes into consideration of three criteria of each job including priority, time action and time stamp. The methodology adopted by this study is definition of job scheduler and positioning jobs in temporary queue and sorting via developing bubble sort. In sorting algorithm criterion of priority, time action should be considered besides time stamp to recognize the tense jobs for processing earlier. To evaluate this algorithm first a numerical test case (simulation is programmed and then the case study performing in order to optimize efficiency of applying this method in real manufacturing system. Eventually the results of this study provided evidence on that the rate of efficiency is increased.

  16. A Low Cost Concept for Data Acquisition Systems Applied to Decentralized Renewable Energy Plants

    Directory of Open Access Journals (Sweden)

    Fábio T. Brito

    2011-01-01

    Full Text Available The present paper describes experiences of the use of monitoring and data acquisition systems (DAS and proposes a new concept of a low cost DAS applied to decentralized renewable energy (RE plants with an USB interface. The use of such systems contributes to disseminate these plants, recognizing in real time local energy resources, monitoring energy conversion efficiency and sending information concerning failures. These aspects are important, mainly for developing countries, where decentralized power plants based on renewable sources are in some cases the best option for supplying electricity to rural areas. Nevertheless, the cost of commercial DAS is still a barrier for a greater dissemination of such systems in developing countries. The proposed USB based DAS presents a new dual clock operation philosophy, in which the acquisition system contains two clock sources for parallel information processing from different communication protocols. To ensure the low cost of the DAS and to promote the dissemination of this technology in developing countries, the proposed data acquisition firmware and the software for USB microcontrollers programming is a free and open source software, executable in the Linux and Windows® operating systems.

  17. A low cost concept for data acquisition systems applied to decentralized renewable energy plants.

    Science.gov (United States)

    Jucá, Sandro C S; Carvalho, Paulo C M; Brito, Fábio T

    2011-01-01

    The present paper describes experiences of the use of monitoring and data acquisition systems (DAS) and proposes a new concept of a low cost DAS applied to decentralized renewable energy (RE) plants with an USB interface. The use of such systems contributes to disseminate these plants, recognizing in real time local energy resources, monitoring energy conversion efficiency and sending information concerning failures. These aspects are important, mainly for developing countries, where decentralized power plants based on renewable sources are in some cases the best option for supplying electricity to rural areas. Nevertheless, the cost of commercial DAS is still a barrier for a greater dissemination of such systems in developing countries. The proposed USB based DAS presents a new dual clock operation philosophy, in which the acquisition system contains two clock sources for parallel information processing from different communication protocols. To ensure the low cost of the DAS and to promote the dissemination of this technology in developing countries, the proposed data acquisition firmware and the software for USB microcontrollers programming is a free and open source software, executable in the Linux and Windows® operating systems. PMID:22346600

  18. Applying the Principles of Systems Engineering and Project Management to Optimize Scientific Research

    Science.gov (United States)

    Peterkin, Adria J.

    2016-01-01

    Systems Engineering is an interdisciplinary practice that analyzes different facets of a suggested area to properly develop and design an efficient system guided by the principles and restrictions of the science community. When entering an institution with quantitative and analytical scientific theory it is important to make sure that all parts of a system correlates in a structured and systematic manner so that all areas of intricacy will be prevented or quickly deduced. My research focused on interpreting and implementing Systems Engineering techniques in the construction, integration and operation of a NASA Radio Jove Kit to Observe Jupiter radio emissions. Jupiter emissions read at very low frequencies so when building the telescope it had to be able to read less than 39.5 MHz. The projected outcome was to receive long L-bursts and short S-burts signals; however, during the time of observation Jupiter was in conjunction with the Sun. We then decided to use the receiver built from the NASA Radio Jove Kit to hook it up to the Karl Jansky telescope to make an effort to listen to solar flares as well, nonetheless, we were unable to identify these signals and further realized they were noise. The overall project was a success in that we were able to apply and comprehend, the principles of Systems Engineering to facilitate the build.

  19. Open system architecture for condition based maintenance applied to a hydroelectric power plant

    Energy Technology Data Exchange (ETDEWEB)

    Amaya, E.J.; Alvares, A.J. [University of Brasilia (UnB), DF (Brazil). Mechanical and Mechatronic Dept.], Emails: eamaya@unb.br, alvares@AlvaresTech.com; Gudwin, R.R. [State University of Campinas (UNICAMP), SP (Brazil). Computer Engineering and Industrial Automation Dept.], E-mail: gudwin@dca.fee.unicamp.br

    2009-07-01

    The hydroelectric power plant of Balbina is implementing a condition based maintenance system applying an open, modular and scalable integrated architecture to provide comprehensive solutions and support to the end users like operational and maintenance team. The system called SIMPREBAL (Predictive Maintenance System of Balbina) is advocate of open standards, in particular through collaborative research programmers. In the developing is clearly understands the need for both, industry standards and a simple to use software development tool chain, supporting the development of complex condition based maintenance systems with multiple partners. The Open System Architecture for Condition Based Maintenance (OSA-CBM) is a standard that consider seven hierarchic layers that represent a logic transition or performed data flow from the data acquisition layer, through the intermediates layers as signal processing, condition monitor, health assessment, prognostics and decision support, to arrive to the presentation layer. SIMPREBAL is being implementing as an OSA-CBM software framework and tool set that allows the creation of truly integrated, comprehensive maintenance solutions through the internet. This paper identifies specific benefits of the application of the OSA-CBM in comprehensive solutions of condition based maintenance for a hydroelectric power plant. (author)

  20. ANALYSIS AND APPLIED STUDY OF DYNAMIC CHARACTERISTICS OF CHAOTIC REPELLER IN COMPLICATED SYSTEM

    Institute of Scientific and Technical Information of China (English)

    MA Jun-hai; REN Biao; CHEN Yu-shu

    2005-01-01

    Fractal characters and fractal dimension of time series created by repeller in complicated system were studied and the time series were reconstructed by applying the theory of phase space reconstruction for chaotic time series. The influence of zero-mean treatment, Fourier filter on prediction for time series were studied. The choice of prediction sample affects the relative error and the prediction length which were also under good concern. The results show that the model provided here are practical for the modeling and prediction of time series created by chaotic repellers. Zero-mean treatment has changed prediction result quantitatively for chaotic repeller sample data. But using Fourier filter may decrease the prediction precision. This is theoretical and practical for study on chaotic repeller in complicated system.

  1. Applied methods and techniques for mechatronic systems modelling, identification and control

    CERN Document Server

    Zhu, Quanmin; Cheng, Lei; Wang, Yongji; Zhao, Dongya

    2014-01-01

    Applied Methods and Techniques for Mechatronic Systems brings together the relevant studies in mechatronic systems with the latest research from interdisciplinary theoretical studies, computational algorithm development and exemplary applications. Readers can easily tailor the techniques in this book to accommodate their ad hoc applications. The clear structure of each paper, background - motivation - quantitative development (equations) - case studies/illustration/tutorial (curve, table, etc.) is also helpful. It is mainly aimed at graduate students, professors and academic researchers in related fields, but it will also be helpful to engineers and scientists from industry. Lei Liu is a lecturer at Huazhong University of Science and Technology (HUST), China; Quanmin Zhu is a professor at University of the West of England, UK; Lei Cheng is an associate professor at Wuhan University of Science and Technology, China; Yongji Wang is a professor at HUST; Dongya Zhao is an associate professor at China University o...

  2. Peak potential meter applied to X-ray tubes in mammal radiography systems

    International Nuclear Information System (INIS)

    It is of a great importance to identify accurately the real peak potential (or simply, KVp) applied to a X-ray tube purposed to medical diagnosis, since it defines the beam energetic quality in terms of photons penetration power. Mainly in mammographic systems. it is of fundamental relevance the KVp accurate measurement because the soft tissues involved in this kind of examination provides different absorption - and, hence, clear contrast on mammographic film - just in a very restrict energetic range. Thus a device to measure KVp with adequate accuracy in mammographic units, using the basic principles of scintillation detection, was developed. This system is therefore composed of a NaI(Tl) crystal which is a X-ray sensor - replacing radiographic films which usually are a source of errors in these measurements - , a photo multiplier tube and changed into amplified electric pulses. Finally the electronic circuit, after adequate pulses treatment, shows instantaneously the actual KVp value in the test on displays. (author)

  3. Hybrid systems for virtual screening: interest of fuzzy clustering applied to olfaction.

    Science.gov (United States)

    Ros, F; Audouze, K; Pintore, M; Chrétien, J R

    2000-01-01

    Kohonen neural networks, also known as Self Organizing Map (SOM), offer a useful 2D representation of the compound distribution inside a large chemical database. This distribution results from the compound organization in a molecular diversity hyperspace derived from a large set of molecular descriptors. Fuzzy techniques based on the "concept of partial truth" reveal to be also a valuable tool for the direct exploitation of chemical databases or SOM. In such cases a fuzzy clustering algorithm is used. In this paper, a complete hybrid system, combining SOM and fuzzy clustering, is applied. As example, a series of olfactory compounds was selected. The complexity of such information is that a same compound may exhibit different odors. It is shown how fuzzy logic helps to have a better understanding of the organization of the compounds. These hybrid systems, using simultaneously SOM and fuzzy clustering, are foreseen as powerful tools for "virtual pre-screening". PMID:10969876

  4. A numerical comparison of control strategies applied to an existing ice storage system

    International Nuclear Information System (INIS)

    While ice storage systems are designed according to a defined strategy for warm day loads, it is interesting to consider other conventional control strategies for mid-season day loads. Three different charging-discharging control strategies are applied to an existing cooling plant and compared in terms of operating costs and energy consumption. A cooling plant model is built. A time stage equal to 15 min is considered to simulate numerically a whole charging-discharging process and compare the different control strategies. These simulations take into account existing technical constraints and set points. EES software is used. The operating costs of the cooling plant are evaluated by taking into account both the energy and the demand cost rate. It is shown that an ice storage system can allow savings of operating costs. However, they can increase energy consumption

  5. Importance of integrated management system applied in health establishments in order to raise treatment quality

    Directory of Open Access Journals (Sweden)

    Dodić Biljana

    2016-01-01

    Full Text Available Introduction. The term “management” is best characterized as “managing” economic or social processes to achieve objectives through a rational use of material and immaterial resources by applying the principles, functions, and management methods. This study has been aimed at evaluating the value of an integrated quality management system implemented at the Institute of Cardiovascular Diseases of Vojvodina to improve the quality of treatment. Material and Methods. In the period from 2008 to 2010 about 40 employees from the Institute of Cardiovascular Diseases of Vojvodina attended various courses given by the lecturers of the Faculty of Technical Sciences, where the function and significance of the “International Standards Organization” were explained, after which standards of interest were implemented at the Institute of Cardiovascular Diseases of Vojvodina. Results. The Department of Cardiology has introduced 11 cardiac procedures with 5 special instructions, 14 general procedures, and 7 specific procedures with 2 instructions. The Department of Cardiac Surgery has introduced 7 procedures to be implemented. The “Vojvodina score” model was put into practice for the perioperative evaluation of cardiac surgery risk. During 2014, the Institute of Cardiovascular Diseases of Vojvodina obtained accreditation for the period of 7 years. Conclusion. The integrated quality management system must be applied in order to achieve a high level of health care in the shortest possible time and with the least possible consumption of material and human resources. The application of this system in practice gives a realistic insight into the working processes and facilitates their functioning. It demands and requires constant monitoring of the system efficiency along with continuous changes and improvements of all elements of the working processes and functional units.

  6. Constraints to Applying Systems Thinking Concepts in Health Systems: A Regional Perspective from Surveying Stakeholders in Eastern Mediterranean Countries

    Directory of Open Access Journals (Sweden)

    Fadi El-Jardali

    2014-12-01

    Full Text Available Background Systems Thinking (ST has recently been promoted as an important approach to health systems strengthening. However, ST is not common practice, particularly in Low- and Middle-Income Countries (LMICs. This paper seeks to explore the barriers that may hinder its application in the Eastern Mediterranean Region (EMR and possible strategies to mitigate them. Methods A survey consisting of open-ended questions was conducted with a purposive sample of health policymakers such as senior officials from the Ministry of Health (MoH, researchers, and other stakeholders such as civil society groups and professional associations from ten countries in the region. A total of 62 respondents participated in the study. Thematic analysis was conducted. Results There was strong recognition of the relevance and usefulness of ST to health systems policy-making and research, although misconceptions about what ST means were also identified. Experience with applying ST was very limited. Approaches to designing health policies in the EMR were perceived as reactive and fragmented (66%. Commonly perceived constraints to application of ST were: a perceived notion of its costliness combined with lack of the necessary funding to operationalize it (53%, competing political interests and lack of government accountability (50%, lack of awareness about relevance and value (47%, limited capacity to apply it (45%, and difficulty in coordinating and managing stakeholders (39%. Conclusion While several strategies have been proposed to mitigate most of these constraints, they emphasized the importance of political endorsement and adoption of ST at the leadership level, together with building the necessary capacity to apply it and apply the learning in research and practice.

  7. Applying Dynamical Systems Theory to Optimize Libration Point Orbit Stationkeeping Maneuvers for WIND

    Science.gov (United States)

    Brown, Jonathan M.; Petersen, Jeremy D.

    2014-01-01

    NASA's WIND mission has been operating in a large amplitude Lissajous orbit in the vicinity of the interior libration point of the Sun-Earth/Moon system since 2004. Regular stationkeeping maneuvers are required to maintain the orbit due to the instability around the collinear libration points. Historically these stationkeeping maneuvers have been performed by applying an incremental change in velocity, or (delta)v along the spacecraft-Sun vector as projected into the ecliptic plane. Previous studies have shown that the magnitude of libration point stationkeeping maneuvers can be minimized by applying the (delta)v in the direction of the local stable manifold found using dynamical systems theory. This paper presents the analysis of this new maneuver strategy which shows that the magnitude of stationkeeping maneuvers can be decreased by 5 to 25 percent, depending on the location in the orbit where the maneuver is performed. The implementation of the optimized maneuver method into operations is discussed and results are presented for the first two optimized stationkeeping maneuvers executed by WIND.

  8. A Study of Advanced Modern Control Techniques Applied to a Twin Rotor MIMO System

    Science.gov (United States)

    Phillips, Andrew E.

    The twin rotor MIMO system (TRMS) is a helicopter-like system that is restricted to two degrees of freedom, pitch and yaw. It is a complicated nonlinear, coupled, MIMO system used for the verification of control methods and observers. There have been many methods successfully applied to the system ranging from simple proportional integral derivative (PID) controllers, to machine learning algorithms, nonlinear control methods and other less explored methods like deadbeat control and various optimal methodologies. This thesis details the design procedure for two different control methods. The first is a suboptimal tracking controller using a linear quadratic regulator (LQR) with integral action. The second is the design of several adaptive sliding mode controller to provide robust tracking control of the TRMS. Once the design is complete the controllers are tested in simulation and their performance is compared against a PID controller experimentally. The performance of the controllers are also compared against other controllers in the literature. The ability of the sliding mode controllers (SMC) to suppress chattering is also be explored.

  9. A safety assessment methodology applied to CNS/ATM-based air traffic control system

    International Nuclear Information System (INIS)

    In the last decades, the air traffic system has been changing to adapt itself to new social demands, mainly the safe growth of worldwide traffic capacity. Those changes are ruled by the Communication, Navigation, Surveillance/Air Traffic Management (CNS/ATM) paradigm , based on digital communication technologies (mainly satellites) as a way of improving communication, surveillance, navigation and air traffic management services. However, CNS/ATM poses new challenges and needs, mainly related to the safety assessment process. In face of these new challenges, and considering the main characteristics of the CNS/ATM, a methodology is proposed at this work by combining 'absolute' and 'relative' safety assessment methods adopted by the International Civil Aviation Organization (ICAO) in ICAO Doc.9689 , using Fluid Stochastic Petri Nets (FSPN) as the modeling formalism, and compares the safety metrics estimated from the simulation of both the proposed (in analysis) and the legacy system models. To demonstrate its usefulness, the proposed methodology was applied to the 'Automatic Dependent Surveillance-Broadcasting' (ADS-B) based air traffic control system. As conclusions, the proposed methodology assured to assess CNS/ATM system safety properties, in which FSPN formalism provides important modeling capabilities, and discrete event simulation allowing the estimation of the desired safety metric.

  10. Blind deconvolution applied to acoustical systems identification with supporting experimental results

    Science.gov (United States)

    Roan, Michael J.; Gramann, Mark R.; Erling, Josh G.; Sibul, Leon H.

    2003-10-01

    Many acoustical applications require the analysis of a signal that is corrupted by an unknown filtering function. Examples arise in the areas of noise or vibration control, room acoustics, structural vibration analysis, and speech processing. Here, the observed signal can be modeled as the convolution of the desired signal with an unknown system impulse response. Blind deconvolution refers to the process of learning the inverse of this unknown impulse response and applying it to the observed signal to remove the filtering effects. Unlike classical deconvolution, which requires prior knowledge of the impulse response, blind deconvolution requires only reasonable prior estimates of the input signal's statistics. The significant contribution of this work lies in experimental verification of a blind deconvolution algorithm in the context of acoustical system identification. Previous experimental work concerning blind deconvolution in acoustics has been minimal, as previous literature concerning blind deconvolution uses computer simulated data. This paper examines experiments involving three classical acoustic systems: driven pipe, driven pipe with open side branch, and driven pipe with Helmholtz resonator side branch. Experimental results confirm that the deconvolution algorithm learns these systems' inverse impulse responses, and that application of these learned inverses removes the effects of the filters.

  11. Applying analytic hierarchy process to assess healthcare-oriented cloud computing service systems.

    Science.gov (United States)

    Liao, Wen-Hwa; Qiu, Wan-Li

    2016-01-01

    Numerous differences exist between the healthcare industry and other industries. Difficulties in the business operation of the healthcare industry have continually increased because of the volatility and importance of health care, changes to and requirements of health insurance policies, and the statuses of healthcare providers, which are typically considered not-for-profit organizations. Moreover, because of the financial risks associated with constant changes in healthcare payment methods and constantly evolving information technology, healthcare organizations must continually adjust their business operation objectives; therefore, cloud computing presents both a challenge and an opportunity. As a response to aging populations and the prevalence of the Internet in fast-paced contemporary societies, cloud computing can be used to facilitate the task of balancing the quality and costs of health care. To evaluate cloud computing service systems for use in health care, providing decision makers with a comprehensive assessment method for prioritizing decision-making factors is highly beneficial. Hence, this study applied the analytic hierarchy process, compared items related to cloud computing and health care, executed a questionnaire survey, and then classified the critical factors influencing healthcare cloud computing service systems on the basis of statistical analyses of the questionnaire results. The results indicate that the primary factor affecting the design or implementation of optimal cloud computing healthcare service systems is cost effectiveness, with the secondary factors being practical considerations such as software design and system architecture. PMID:27441149

  12. New interpretive procedure for whole rock U-Pb systems applied to the Vredefort crustal profile

    International Nuclear Information System (INIS)

    Granulite grade Precambrian gneisses have usually undergone at least one period of strong U depletion. While rock U-Pb isotope studies can determine the time(s) of the severe depletion, and this work attempts to place such studies on a more rigorous footing. Two-stage U-Pb systems can be described in terms of one major, episodic differentiation into rocks with varying U/Pb ratios, while three-stage systems can be described by two such distinct episodes. Most of the Precambrian granulites that have been isotopically analyzed have histories too complex to be described as two-stage systems. However, it is demonstrated here that U-Pb data on whole rock suites can yield the complete U-Pb chemical history of a three-stage system (in terms of U/Pb ratios). For a suite of granulites, present-day 207Pb/204Pb and 206Pb/204Pb ratios and element concentration data allow these ratios to be calculated at a number of specific past times and plotted as an array. The degree of scatter in each of these 'past arrays' is graphed as a function of time. The point of least scatter denotes the age of the end of stage 2 in the history of the system. The array slope and the dating of the end of stage 2 also permit the beginning of stage 2 to be calculated. All other parameters in the system (U and Pb concentrations, Pb isotopic ratios) can now be determined for each individual rock throughout its history. The new interpretive method also distinguishes sensitively among various kindds of uranium fractionation which may have operated during the differentiation episodes. It is applied here to uranium-depleted granulites in the deeper part of the Vredefort crustal profile. The times of the two fractionating episodes are calculated at approx.3860 and approx.2760 m.y., respectively

  13. Applied Electromagnetics

    International Nuclear Information System (INIS)

    These proceedings contain papers relating to the 3rd Japanese-Bulgarian-Macedonian Joint Seminar on Applied Electromagnetics. Included are the following groups: Numerical Methods I; Electrical and Mechanical System Analysis and Simulations; Inverse Problems and Optimizations; Software Methodology; Numerical Methods II; Applied Electromagnetics

  14. Applied Time Domain Stability Margin Assessment for Nonlinear Time-Varying Systems

    Science.gov (United States)

    Kiefer, J. M.; Johnson, M. D.; Wall, J. H.; Dominguez, A.

    2016-01-01

    margins. At each time point, the system was linearized about the current operating point using Simulink's built-in solver. Each linearized system in time was evaluated for its rigid-body gain margin (high frequency gain margin), rigid-body phase margin, and aero gain margin (low frequency gain margin) for each control axis. Using the stability margins derived from the baseline linearization approach, the time domain derived stability margins were determined by executing time domain simulations in which axis-specific incremental gain and phase adjustments were made to the nominal system about the expected neutral stability point at specific flight times. The baseline stability margin time histories were used to shift the system gain to various values around the zero margin point such that a precise amount of expected gain margin was maintained throughout flight. When assessing the gain margins, the gain was applied starting at the time point under consideration, thereafter following the variation in the margin found in the linear analysis. When assessing the rigid-body phase margin, a constant time delay was applied to the system starting at the time point under consideration. If the baseline stability margins were correctly determined via the linear analysis, the time domain simulation results should contain unstable behavior at certain gain and phase values. Examples will be shown from repeated simulations with variable added gain and phase lag. Faithfulness of margins calculated from the linear analysis to the nonlinear system will be demonstrated.

  15. Performance and accuracy investigations of two Doppler global velocimetry systems applied in parallel

    Science.gov (United States)

    Willert, Christian; Stockhausen, Guido; Klinner, Joachim; Lempereur, Christine; Barricau, Philippe; Loiret, Philippe; Raynal, Jean Claude

    2007-08-01

    Two Doppler global velocimetry systems were applied in parallel to assess their performance in wind tunnel environments. Both DGV systems were mounted on a common traverse surrounding the glass-walled 1.4 × 1.8 m2 test section of the wind tunnel. The traverse normally supports a three-component forward-scatter laser Doppler velocimetry system. The reproducible tip-vortex flow field generated by the blunt tip of an airfoil was chosen for this investigation and was precisely surveyed by LDA just prior to the DGV measurements. Both DGV systems shared the same continuous wave laser light source, laser frequency monitoring and fibre optic light sheet delivery system. The principal differences between the DGV implementations are with regard to the imaging configuration. One configuration relied on a single camera view that observed three successively operated light sheets. In the second configuration, three camera views simultaneously observed a single light sheet using a four-branch fibre imaging bundle. The imaging bundle system had all three viewpoints in a forward scattering arrangement which increased the scattering efficiency but reduced the frequency shift sensitivity. Since all three light sheet observation components were acquired onto the same image frame, acquisition times could be reduced to a minimum. On the other hand, the triple light sheet-single camera system observed two light sheets in forward scatter and one light sheet in backscatter. Although three separate images had to be recorded in succession, the image quality, spatial resolution and signal-to-noise ratio were superior to the imaging bundle system. Comparison of the DGV data with LDV measurements shows very good agreement to within 1-2 m s-1. The remaining discrepancy has a variety of causes, some are related to the reduced resolving power of the fibre imaging bundle system (graininess, smoothing), exact localization of the receiver head with respect to the scene, laser frequency drift or

  16. An acceleration technique for the Gauss-Seidel method applied to symmetric linear systems

    Directory of Open Access Journals (Sweden)

    Jesús Cajigas

    2014-06-01

    Full Text Available A preconditioning technique to improve the convergence of the Gauss-Seidel method applied to symmetric linear systems while preserving symmetry is proposed. The preconditioner is of the form I + K and can be applied an arbitrary number of times. It is shown that under certain conditions the application of the preconditioner a finite number of steps reduces the matrix to a diagonal. A series of numerical experiments using matrices from spatial discretizations of partial differential equations demonstrates that both versions of the preconditioner, point and block version, exhibit lower iteration counts than its non-symmetric version. Resumen. Se propone una técnica de precondicionamiento para mejorar la convergencia del método Gauss-Seidel aplicado a sistemas lineales simétricos pero preservando simetría. El precondicionador es de la forma I + K y puede ser aplicado un número arbitrario de veces. Se demuestra que bajo ciertas condiciones la aplicación del precondicionador un número finito de pasos reduce la matriz del sistema precondicionado a una diagonal. Una serie de experimentos con matrices que provienen de la discretización de ecuaciones en derivadas parciales muestra que ambas versiones del precondicionador, por punto y por bloque, muestran un menor número de iteraciones en comparación con la versión que no preserva simetría.

  17. Applying Hamming Code to Memory System of Safety Grade PLC (POSAFE-Q) Processor Module

    International Nuclear Information System (INIS)

    If some errors such as inverted bits occur in the memory, instructions and data will be corrupted. As a result, the PLC may execute the wrong instructions or refer to the wrong data. Hamming Code can be considered as the solution for mitigating this mis operation. In this paper, we apply hamming Code, then, we inspect whether hamming code is suitable for to the memory system of the processor module. In this paper, we applied hamming code to existing safety grade PLC (POSAFE-Q). Inspection data are collected and they will be referred for improving the PLC in terms of the soundness. In our future work, we will try to improve time delay caused by hamming calculation. It will include CPLD optimization and memory architecture or parts alteration. In addition to these hamming code-based works, we will explore any methodologies such as mirroring for the soundness of safety grade PLC. Hamming code-based works can correct bit errors, but they have limitation in multi bits errors

  18. Analysis of Godunov type schemes applied to the compressible Euler system at low Mach number

    Science.gov (United States)

    Dellacherie, Stéphane

    2010-02-01

    We propose a theoretical framework to clearly explain the inaccuracy of Godunov type schemes applied to the compressible Euler system at low Mach number on a Cartesian mesh. In particular, we clearly explain why this inaccuracy problem concerns the 2D or 3D geometry and does not concern the 1D geometry. The theoretical arguments are based on the Hodge decomposition, on the fact that an appropriate well-prepared subspace is invariant for the linear wave equation and on the notion of first-order modified equation. This theoretical approach allows to propose a simple modification that can be applied to any colocated scheme of Godunov type or not in order to define a large class of colocated schemes accurate at low Mach number on any mesh. It also allows to justify colocated schemes that are accurate at low Mach number as, for example, the Roe-Turkel and the AUSM +-up schemes, and to find a link with a colocated incompressible scheme stabilized with a Brezzi-Pitkäranta type stabilization. Numerical results justify the theoretical arguments proposed in this paper.

  19. Avertable dose intervention applied in emergency response dose evaluation system for nuclear emergency preparedness in Taiwan

    International Nuclear Information System (INIS)

    In Taiwan the new guides for the nuclear emergency public protective action were laid down by the Atomic Energy Council (AEC) of Executive Yuan, Taiwan, ROC on July 15th, 2005. The main modifications of the guides are that the avertable dose is applied as the intervention levels and suggests the public protective actions. The emergency response dose evaluation system named RPDOSE, which was developed in 2005, was employed in this work to enhance the capability of the avertable dose evaluation for the villages in the emergency planning zone (EPZ). The period of the long-term weather forecasting data was extended from 4 to 8 days to satisfy the requirement of avertable dose computing. According to the intervention levels, the RPDOSE system is used to calculate the avertable dose and suggest appropriate public protective actions such as sheltering, evacuation or iodine prophylaxis as well as the proposed acting times for each village in the EPZ. This system was employed and examined in the annual nuclear emergency exercise of 2008 in the Maanshan nuclear power plant.

  20. Performance evaluation of renewable energy support policies, applied on Flanders' tradable certificates system

    International Nuclear Information System (INIS)

    The article is composed as a diptych. First, a general framework of criteria to evaluate the performance of renewable energy support systems is elaborated. It is built around the main criteria effectiveness, efficiency and equity. All three are multi-layered and specifying the contents of the various layers is case dependent. Second, the framework is applied on detailed data about the Flemish tradable certificates support system. Several salient conclusions confirm observations from research in other countries causing growing awareness. First, most crucial is a careful and detailed qualification of renewable energy sources and technologies. Without, even effectiveness is not reliably measurable. Second, nearby targets of renewable energy output must follow from a clearly designed transition trajectory towards a sustainable electricity sector. Such transition is intertwined with an industrial technological policy for bringing the necessary technologies to development and maturity. Third, if the above two prerequisites are overridden certificates systems abound of excess profits, predominantly reaped by incumbent power companies being not the best agents of real change to a sustainable energy future

  1. Avertable dose intervention applied in emergency response dose evaluation system for nuclear emergency preparedness in Taiwan

    Energy Technology Data Exchange (ETDEWEB)

    Lu Chunghsin, E-mail: chlu@iner.gov.t [Health Physics Division, Institute of Nuclear Energy Research, No. 1000, Wunhua Rd., Jiaan Village, Longtan Township, Taoyuan County 32546, Taiwan (China); Teng Jenhsin [Research and Development Center, Central Weather Bureau, Taiwan (China); Yang Yungmuh; Chang Borjing [Health Physics Division, Institute of Nuclear Energy Research, No. 1000, Wunhua Rd., Jiaan Village, Longtan Township, Taoyuan County 32546, Taiwan (China)

    2010-06-21

    In Taiwan the new guides for the nuclear emergency public protective action were laid down by the Atomic Energy Council (AEC) of Executive Yuan, Taiwan, ROC on July 15th, 2005. The main modifications of the guides are that the avertable dose is applied as the intervention levels and suggests the public protective actions. The emergency response dose evaluation system named RPDOSE, which was developed in 2005, was employed in this work to enhance the capability of the avertable dose evaluation for the villages in the emergency planning zone (EPZ). The period of the long-term weather forecasting data was extended from 4 to 8 days to satisfy the requirement of avertable dose computing. According to the intervention levels, the RPDOSE system is used to calculate the avertable dose and suggest appropriate public protective actions such as sheltering, evacuation or iodine prophylaxis as well as the proposed acting times for each village in the EPZ. This system was employed and examined in the annual nuclear emergency exercise of 2008 in the Maanshan nuclear power plant.

  2. Human-machine interfaces based on EMG and EEG applied to robotic systems

    Directory of Open Access Journals (Sweden)

    Sarcinelli-Filho Mario

    2008-03-01

    Full Text Available Abstract Background Two different Human-Machine Interfaces (HMIs were developed, both based on electro-biological signals. One is based on the EMG signal and the other is based on the EEG signal. Two major features of such interfaces are their relatively simple data acquisition and processing systems, which need just a few hardware and software resources, so that they are, computationally and financially speaking, low cost solutions. Both interfaces were applied to robotic systems, and their performances are analyzed here. The EMG-based HMI was tested in a mobile robot, while the EEG-based HMI was tested in a mobile robot and a robotic manipulator as well. Results Experiments using the EMG-based HMI were carried out by eight individuals, who were asked to accomplish ten eye blinks with each eye, in order to test the eye blink detection algorithm. An average rightness rate of about 95% reached by individuals with the ability to blink both eyes allowed to conclude that the system could be used to command devices. Experiments with EEG consisted of inviting 25 people (some of them had suffered cases of meningitis and epilepsy to test the system. All of them managed to deal with the HMI in only one training session. Most of them learnt how to use such HMI in less than 15 minutes. The minimum and maximum training times observed were 3 and 50 minutes, respectively. Conclusion Such works are the initial parts of a system to help people with neuromotor diseases, including those with severe dysfunctions. The next steps are to convert a commercial wheelchair in an autonomous mobile vehicle; to implement the HMI onboard the autonomous wheelchair thus obtained to assist people with motor diseases, and to explore the potentiality of EEG signals, making the EEG-based HMI more robust and faster, aiming at using it to help individuals with severe motor dysfunctions.

  3. Stochastic Methods Applied to Power System Operations with Renewable Energy: A Review

    Energy Technology Data Exchange (ETDEWEB)

    Zhou, Z. [Argonne National Lab. (ANL), Argonne, IL (United States); Liu, C. [Argonne National Lab. (ANL), Argonne, IL (United States); Electric Reliability Council of Texas (ERCOT), Austin, TX (United States); Botterud, A. [Argonne National Lab. (ANL), Argonne, IL (United States)

    2016-08-01

    Renewable energy resources have been rapidly integrated into power systems in many parts of the world, contributing to a cleaner and more sustainable supply of electricity. Wind and solar resources also introduce new challenges for system operations and planning in terms of economics and reliability because of their variability and uncertainty. Operational strategies based on stochastic optimization have been developed recently to address these challenges. In general terms, these stochastic strategies either embed uncertainties into the scheduling formulations (e.g., the unit commitment [UC] problem) in probabilistic forms or develop more appropriate operating reserve strategies to take advantage of advanced forecasting techniques. Other approaches to address uncertainty are also proposed, where operational feasibility is ensured within an uncertainty set of forecasting intervals. In this report, a comprehensive review is conducted to present the state of the art through Spring 2015 in the area of stochastic methods applied to power system operations with high penetration of renewable energy. Chapters 1 and 2 give a brief introduction and overview of power system and electricity market operations, as well as the impact of renewable energy and how this impact is typically considered in modeling tools. Chapter 3 reviews relevant literature on operating reserves and specifically probabilistic methods to estimate the need for system reserve requirements. Chapter 4 looks at stochastic programming formulations of the UC and economic dispatch (ED) problems, highlighting benefits reported in the literature as well as recent industry developments. Chapter 5 briefly introduces alternative formulations of UC under uncertainty, such as robust, chance-constrained, and interval programming. Finally, in Chapter 6, we conclude with the main observations from our review and important directions for future work.

  4. Effects produced by oscillations applied to nonlinear dynamic systems: a general approach and examples

    DEFF Research Database (Denmark)

    Blekhman, I. I.; Sorokin, V. S.

    2016-01-01

    A general approach to study effects produced by oscillations applied to nonlinear dynamic systems is developed. It implies a transition from initial governing equations of motion to much more simple equations describing only the main slow component of motions (the vibro-transformed dynamics...... equations). The approach is named as the oscillatory strobodynamics, since motions are perceived as under a stroboscopic light. The vibro-transformed dynamics equations comprise terms that capture the averaged effect of oscillations. The method of direct separation of motions appears to be an efficient and...... requirement for the involved nonlinearities to be weak. The approach is illustrated by several relevant examples from various fields of science, e.g., mechanics, physics, chemistry and biophysics....

  5. Identification of profitable areas to apply product configuration systems in Engineering-To-Order companies

    DEFF Research Database (Denmark)

    Kristjansdottir, Katrin; Hvam, Lars; Shafiee, Sara;

    2015-01-01

    This article suggests a systematic framework for identifying potential areas, where Engineering-To-Order (ETO) companies may increase their profit-ability by implementing a Product Configuration System (PCS). In order to do so a three-step framework is proposed based on literature. The starting...... point is to conduct a profitability analysis to determine the accuracy of the cost estima-tions, and based on that the reason for the deviations across different projects is found. The next step is to generate the scope for different scenarios that aim to improve the current situation. Finally, it is...... suggested to make a cost-benefit analysis for different scenarios to determine where a PCS can provide the most benefits. This article is supplemented with a case study from an ETO company where potential areas for using PCS were found by applying the suggested framework....

  6. Geographic information systems applied to potential hydrocarbon oil spills in the Balearic Islands

    International Nuclear Information System (INIS)

    Creation of a geographic information system (GIS), connected to the OILMAP simulation model, and specific for the Balearic Islands is described. The resulting GIS includes information about the coastal areas of the islands, indicating the most sensitive areas (fisheries, natural parks, beaches and their sand type, dimensions, potential occupancy and services). The natural parks bordering the littoral region of the Balearic sea (in Majorca, Menorca, Formentera and Cabrera) are classified by extension, flora and fauna and other characteristics. Data concerning the tanker routes that pass through the Balearic Sea are entered. With the aid of the computer program OILMAP (developed by Applied Science Associates) different types of tanker oil spills are simulated to evaluate the potential risk zones and the effects that an oil spill could create for the Islands

  7. Thermal power transfer system using applied potential difference to sustain operating pressure difference

    Science.gov (United States)

    Bhandari, Pradeep (Inventor); Fujita, Toshio (Inventor)

    1991-01-01

    A thermal power transfer system using a phase change liquid gas fluid in a closed loop configuration has a heat exchanger member connected to a gas conduit for inputting thermal energy into the fluid. The pressure in the gas conduit is higher than a liquid conduit that is connected to a heat exchanger member for outputting thermal energy. A solid electrolyte member acts as a barrier between the gas conduit and the liquid conduit adjacent to a solid electrolyte member. The solid electrolyte member has the capacity of transmitting ions of a fluid through the electrolyte member. The ions can be recombined with electrons with the assistance of a porous electrode. An electrical field is applied across the solid electrolyte member to force the ions of the fluid from a lower pressure liquid conduit to the higher pressure gas conduit.

  8. System Identification Applied to Dynamic CFD Simulation and Wind Tunnel Data

    Science.gov (United States)

    Murphy, Patrick C.; Klein, Vladislav; Frink, Neal T.; Vicroy, Dan D.

    2011-01-01

    Demanding aerodynamic modeling requirements for military and civilian aircraft have provided impetus for researchers to improve computational and experimental techniques. Model validation is a key component for these research endeavors so this study is an initial effort to extend conventional time history comparisons by comparing model parameter estimates and their standard errors using system identification methods. An aerodynamic model of an aircraft performing one-degree-of-freedom roll oscillatory motion about its body axes is developed. The model includes linear aerodynamics and deficiency function parameters characterizing an unsteady effect. For estimation of unknown parameters two techniques, harmonic analysis and two-step linear regression, were applied to roll-oscillatory wind tunnel data and to computational fluid dynamics (CFD) simulated data. The model used for this study is a highly swept wing unmanned aerial combat vehicle. Differences in response prediction, parameters estimates, and standard errors are compared and discussed

  9. Implementation of procedures for kilovoltage evaluation applied to dental X ray system

    International Nuclear Information System (INIS)

    In this work measurements were done in order to evaluate the accuracy and the precision of the voltage applied to a X rays tube, as well as its variation with distance. A dental X ray system with nominal voltage of 70 kV was used, and a portable kV digital measurer calibrated by the IEE/USP was also utilized. The kV obtained results presented a variation of 9.7% in accuracy and 1.6% in the precision. The results obtained for the distance variation showed only 0.6% of deviation, considering the kVp values obtained. The results are in accordance with the minimum values recommended by Portaria Federal 453 from the Ministerio da Saude. (author)

  10. Overview of basic and applied research on battery systems at Argonne

    Energy Technology Data Exchange (ETDEWEB)

    Nevitt, M. V.

    1979-01-01

    The need for a basic understanding of the ion transport and related effects that are observed under the unique physical and electrochemical conditions occurring in high-temperature, high-performance batteries is pointed out. Such effects include those that are typical of transport in bulk materials such as liquid and solid electrolytes and the less well understood effects observed in migration in and across the interfacial zones existing around electrodes. The basic and applied studies at Argonne National Laboratory, centered in part around the development of a Li(alloy)/iron sulfide battery system for energy storage, are briefly described as an example of the way that such an understanding is being sought by coordinated interdisciplinary research. 3 figures.

  11. Challenges in the implementation of a quality management system applied to radiometric analysis

    International Nuclear Information System (INIS)

    The concept of quality in laboratories has been well established as an essential factor in the search for reliable results. Since its first version published (1999), the ISO/IEC 17025 has been applied in the industrial and research fields, in a wide range of laboratorial analyses. However, the implementation of a Quality Management System still poses great challenges to institutions and companies. The purpose of this work is to expose the constraints related to the implementation of ISO/IEC 17025 applied to analytical assays of radionuclides, accomplished by studying the case of the Pocos de Caldas Laboratory of the Brazilian Commission for Nuclear Energy. In this lab, a project of accreditation of techniques involving determination of radionuclides in water, soil, sediment and food samples has been conducted since 2011. The challenges presented by this project arise from the administrative view, where the governmental nature of the institution translates into unlevelled availability resources and the organizational view, whereas QMS requires inevitable changes in the organizational culture. It is important to point out that when it comes to accreditation of analysis involving radioactive elements, many aspects must be treated carefully due to the their very particular nature. Among these concerns are the determination of analysis uncertainties, accessibility to international proficiency studies, international radioactive samples and CRM transportation, the study of parameters on the validation of analytical methods and the lack of documentation and specialized personnel regarding quality at radiometric measurements. Through an effective management system, the institution is overcoming these challenges, moving toward the ISO/IEC 17025 accreditation. (author)

  12. Challenges in the implementation of a quality management system applied to radiometric analysis

    Energy Technology Data Exchange (ETDEWEB)

    Dias, Danila C.S.; Bonifacio, Rodrigo L.; Nascimento, Marcos R.L.; Silva, Nivaldo C. da; Taddei, Maria Helena T., E-mail: danilacdias@gmail.com [Comissao Nacional de Energia Nuclear (LAPOC/CNEN-MG), Pocos de Caldas, MG (Brazil). Laboratorio de Pocos de Caldas

    2015-07-01

    The concept of quality in laboratories has been well established as an essential factor in the search for reliable results. Since its first version published (1999), the ISO/IEC 17025 has been applied in the industrial and research fields, in a wide range of laboratorial analyses. However, the implementation of a Quality Management System still poses great challenges to institutions and companies. The purpose of this work is to expose the constraints related to the implementation of ISO/IEC 17025 applied to analytical assays of radionuclides, accomplished by studying the case of the Pocos de Caldas Laboratory of the Brazilian Commission for Nuclear Energy. In this lab, a project of accreditation of techniques involving determination of radionuclides in water, soil, sediment and food samples has been conducted since 2011. The challenges presented by this project arise from the administrative view, where the governmental nature of the institution translates into unlevelled availability resources and the organizational view, whereas QMS requires inevitable changes in the organizational culture. It is important to point out that when it comes to accreditation of analysis involving radioactive elements, many aspects must be treated carefully due to the their very particular nature. Among these concerns are the determination of analysis uncertainties, accessibility to international proficiency studies, international radioactive samples and CRM transportation, the study of parameters on the validation of analytical methods and the lack of documentation and specialized personnel regarding quality at radiometric measurements. Through an effective management system, the institution is overcoming these challenges, moving toward the ISO/IEC 17025 accreditation. (author)

  13. Study of biomass applied to a cogeneration system: A steelmaking industry case

    International Nuclear Information System (INIS)

    In this paper, a theoretical technical study was carried out using Brazilian available biomass materials (rice husk, coffee husk and elephant grass) compared to natural gas applied to an electric arc furnace (EAF) steelmaking process. Rice and coffee husk are biomass residues from the agriculture while elephant grass (Pennisetum Purpureum Schum) is an abundant, fast growing plant, which is used for cattle breeding. The ultimate analysis of the biomass materials was carried out in the research department of a Brazilian Steelmaking Industry. The results of the ultimate analysis were used to determine the lower calorific value and the mass flow rate of the biomass materials used in the cogeneration system. The actual steelmaking process uses natural gas to both improve the “cold spots” inside the furnace and contribute to minimize the use of electrical energy in the heating process. The feasibility study considers a combined heat and power plant (CHP) to generate electricity and heat to the electric arc furnace (EAF) process. This study used the First Law of Thermodynamics to determine the operational parameters of the cogeneration plant considering three cases of different operational parameters in the Rankine cycle. The technical results show that the natural gas consumption and exhaust gas generation were the lowest among the fuels in the three cases analyzed. Regarding the exhaust gases generation, some aspects should be highlighted: the combustion of biomass is considered carbon neutral; the exhaust gases generated may be used to scrap preheat; also, biomass is a renewable fuel in contrast with natural gas, which is a fossil fuel. Thus, an economic analysis, considering only the operational cost of the plant, was conducted exhibiting that elephant grass had the lowest operational cost, accounting for a reduction of about 9% in the second case and 15% in the third case compared to natural gas. Although the biomasses have lower LCV than natural gas, they

  14. Effects of lac-corn agroforest ecosystem on ground-dwelling ant diversity and functional groups%紫胶玉米混农林模式对地表蚂蚁多样性及功能群的影响

    Institute of Scientific and Technical Information of China (English)

    卢志兴; 李可力; 张念念; 陈又清

    2016-01-01

    为了揭示紫胶玉米混农林对地表蚂蚁群落多样性及功能群的影响,采用陷阱法调查了云南省绿春县紫胶林、紫胶玉米混农林和玉米旱地3种类型样地的地表蚂蚁物种组成、物种多样性、群落结构相似性、指示物种和功能群等。结果显示,紫胶玉米混农林模式具有较高的地表蚂蚁物种数和稀有物种数,与玉米旱地相比,紫胶玉米混农林的蚂蚁物种数增加41%,稀有物种数增加85%。紫胶玉米混农林与紫胶林具有更高的蚂蚁多样性,其物种丰富度和 ACE 估值均显著高于玉米旱地,而紫胶玉米混农林的多度显著高于紫胶林和玉米旱地。地表蚂蚁物种组合在3种类型样地中有差异,与紫胶林和紫胶玉米混农林相关联的物种与玉米旱地不同。3种样地的指示物种不同,玉米旱地的指示种为扁平虹臭蚁和伊大头蚁,紫胶玉米混农林为凹头臭蚁、西昌刺结蚁和中华小家蚁,紫胶林为费氏盘腹蚁、立毛举腹蚁、阿普特铺道蚁、贝卡盘腹蚁和西氏拟毛蚁。紫胶玉米混农林蚂蚁功能群组成比例介于玉米旱地和紫胶林之间,其中机会主义者(OPP)、从属弓背蚁族(SC)、隐蔽物种(C)及气候特化种(CS)的蚂蚁物种数、多度及比例明显高于玉米旱地。紫胶玉米混农林生境较为复杂,对地表蚂蚁多样性保护具有积极作用,是平衡环境保护和经济可持续发展的较好模式。%The ecological consequences of the changes in ecosystem functions caused by land use change have attracted more attention in recent years. However, less study has focused on the relationship between biodiversity and ecosystem function. Agroforest ecosystem is the combination of agriculture and forestry for management purposes. As an important model, agroforestry has vital ecological benefits for land use substantial development. Agroforestry has been considered to support more species

  15. RS-34 Phoenix In-Space Propulsion System Applied to Active Debris Removal Mission

    Science.gov (United States)

    Esther, Elizabeth A.; Burnside, Christopher G.

    2014-01-01

    In-space propulsion is a high percentage of the cost when considering Active Debris Removal mission. For this reason it is desired to research if existing designs with slight modification would meet mission requirements to aid in reducing cost of the overall mission. Such a system capable of rendezvous, close proximity operations, and de-orbit of Envisat class resident space objects has been identified in the existing RS-34 Phoenix. RS-34 propulsion system is a remaining asset from the de-commissioned United States Air Force Peacekeeper program; specifically the pressure-fed storable bi-propellant Stage IV Post Boost Propulsion System. The National Aeronautics and Space Administration (NASA) Marshall Space Flight Center (MSFC) gained experience with the RS-34 propulsion system on the successful Ares I-X flight test program flown in the Ares I-X Roll control system (RoCS). The heritage hardware proved extremely robust and reliable and sparked interest for further utilization on other potential in-space applications. Subsequently, MSFC has obtained permission from the USAF to obtain all the remaining RS-34 stages for re-use opportunities. The MSFC Advanced Concepts Office (ACO) was commissioned to lead a study for evaluation of the Rocketdyne produced RS-34 propulsion system as it applies to an active debris removal design reference mission for resident space object targets including Envisat. Originally designed, the RS-34 Phoenix provided in-space six-degrees-of freedom operational maneuvering to deploy payloads at multiple orbital locations. The RS-34 Concept Study lead by sought to further understand application for a similar orbital debris design reference mission to provide propulsive capability for rendezvous, close proximity operations to support the capture phase of the mission, and deorbit of single or multiple large class resident space objects. Multiple configurations varying the degree of modification were identified to trade for dry mass optimization and

  16. Development and analysis of a resource-aware power management system as applied to small spacecraft

    Science.gov (United States)

    Shriver, Patrick

    In this thesis, an overall framework and solution method for managing the limited power resources of a small spacecraft is presented. Analogous to mobile computing technology, a primary limiting factor is the available power resources. In spite of the millions of dollars budgeted for research and development over decades, improvements in battery efficiency remains low. This situation is exacerbated by advances in payload technology that lead to increasingly power-hungry and data-intensive instruments. The challenge for the small spacecraft is to maximize capabilities and performance while meeting difficult design requirements and small project budgets. Power management is sought as a solution that can be applied with an existing generation of batteries. Ultimately, the power management problem is one of optimizing system performance and lifetime while maintaining safe operating conditions. This problem is formulated as a constrained, multi-objective combinatorial optimization problem. The problem is argued to be computationally intractable, and a formal proof of optimal substructure is presented. A multi-agent solution paradigm is developed that implements Dynamic Programming and Compromise Programming solutions. A high-level, "black box" software simulation of a typical power system is used to evaluate the developed method. The parameters used in simulation are taken from existing satellite designs. Compared to a traditional spacecraft operations approach, the developed method is shown to be useful in maximizing the utility of the spacecraft. As a battery ages, the method also has an increasing benefit on minimizing the missions risk.

  17. A diagnostic procedure for applying the social-ecological systems framework in diverse cases

    Directory of Open Access Journals (Sweden)

    Jochen Hinkel

    2015-03-01

    Full Text Available The framework for analyzing sustainability of social-ecological systems (SES framework of Elinor Ostrom is a multitier collection of concepts and variables that have proven to be relevant for understanding outcomes in diverse SES. The first tier of this framework includes the concepts resource system (RS and resource units (RU, which are then further characterized through lower tier variables such as clarity of system boundaries and mobility. The long-term goal of framework development is to derive conclusions about which combinations of variables explain outcomes across diverse types of SES. This will only be possible if the concepts and variables of the framework can be made operational unambiguously for the different types of SES, which, however, remains a challenge. Reasons for this are that case studies examine other types of RS than those for which the framework has been developed or consider RS for which different actors obtain different kinds of RU. We explore these difficulties and relate them to antecedent work on common-pool resources and public goods. We propose a diagnostic procedure which resolves some of these difficulties by establishing a sequence of questions that facilitate the step-wise and unambiguous application of the SES framework to a given case. The questions relate to the actors benefiting from the SES, the collective goods involved in the generation of those benefits, and the action situations in which the collective goods are provided and appropriated. We illustrate the diagnostic procedure for four case studies in the context of irrigated agriculture in New Mexico, common property meadows in the Swiss Alps, recreational fishery in Germany, and energy regions in Austria. We conclude that the current SES framework has limitations when applied to complex, multiuse SES, because it does not sufficiently capture the actor interdependencies introduced through RS and RU characteristics and dynamics.

  18. An approach for evaluating the integrity of fuel applied in Innovative Nuclear Energy Systems

    International Nuclear Information System (INIS)

    One of the important issues in the study of Innovative Nuclear Energy Systems is evaluating the integrity of fuel applied in Innovative Nuclear Energy Systems. An approach for evaluating the integrity of the fuel is discussed here based on the procedure currently used in the integrity evaluation of fast reactor fuel. The fuel failure modes determining fuel life time were reviewed and fuel integrity was analyzed and compared with the failure criteria. Metal and nitride fuels with austenitic and ferritic stainless steel (SS) cladding tubes were examined in this study. For the purpose of representative irradiation behavior analyses of the fuel for Innovative Nuclear Energy Systems, the correlations of the cladding characteristics were modeled based on well-known characteristics of austenitic modified 316 SS (PNC316), ferritic–martensitic steel (PNC–FMS) and oxide dispersion strengthened steel (PNC–ODS). The analysis showed that the fuel lifetime is limited by channel fracture which is a nonductile type (brittle) failure associated with a high level of irradiation-induced swelling in the case of austenitic steel cladding. In case of ferritic steel, on the other hand, the fuel lifetime is controlled by cladding creep rupture. The lifetime evaluated here is limited to 200 GW d/t, which is lower than the target burnup value of 500 GW d/t. One of the possible measures to extend the lifetime may be reducing the fuel smeared density and ventilating fission gas in the plenum for metal fuel and by reducing the maximum cladding temperature from 650 to 600 °C for both metal and nitride fuel

  19. 25th International Conference on Industrial, Engineering & Other Applica- tions of Applied Intelligent Systems (IEA/AIE 2012)

    CERN Document Server

    Jiang, He; Ali, Moonis; Li, Mingchu; Modern Advances in Intelligent Systems and Tools

    2012-01-01

    Intelligent systems provide a platform to connect the research in artificial intelligence to real-world problem solving applications. Various intelligent systems have been developed to face real-world applications. This book discusses the modern advances in intelligent systems and the tools in applied artificial intelligence. It consists of twenty-three chapters authored by participants of the 25th International Conference on Industrial, Engineering & Other Applications of Applied Intelligent Systems (IEA/AIE 2012) which was held in Dalian, China. This book is divided into six parts, including Applied Intelligence, Cognitive Computing and Affective Computing, Data Mining and Intelligent Systems, Decision Support Systems, Machine Learning, and Natural Language Processing. Each part includes three to five chapters. In these chapters, many approaches, applications, restrictions, and discussions are presented. The material of each chapter is self-contained and was reviewed by at least two anonymous referees t...

  20. Trial plan for advanced NDA system of uranium wastes. Introduction of active neutron method applied to NDA system

    International Nuclear Information System (INIS)

    We developed uranium mass assay systems (NWAS) for 200-litter wastes drums applied passive neutron measurements by Non-destructive Assay (NDA) method and applied for the actual wastes drums generated in the uranium refinement conversion plant or uranium enrichment plant in Ningyo-Toge. The neutron measurement methodology of U-234(α,n) reaction using He-3 proportional counters accomplished certain results, however also included some problems that the neutron penetration rates are depend upon matrices or density in wastes drums and required so much counting time. Therefore it had been difficult to determine uranium mass against 'unknown objects'. For the purpose of solving problems active neutron measurements appears promising, we are now challenging to improve our equipments, which are composed of neutron generator, He-3 proportional counters, and 50cm of concrete structure as reflector and shielding. The uranium mass are determined by counting secondary neutrons generated from nuclear fissions. This active neutron measurements methodology will be achieved good performances with higher sensitivities and accuracies. It is extremely expected to contribute in the fields of safeguards works. (author)

  1. Quantitative tools for comparing animal communication systems: information theory applied to bottlenose dolphin whistle repertoires.

    Science.gov (United States)

    McCOWAN; Hanser; Doyle

    1999-02-01

    Comparative analysis of nonhuman animal communication systems and their complexity, particularly in comparison to human language, has been generally hampered by both a lack of sufficiently extensive data sets and appropriate analytic tools. Information theory measures provide an important quantitative tool for examining and comparing communication systems across species. In this paper we use the original application of information theory, that of statistical examination of a communication system's structure and organization. As an example of the utility of information theory to the analysis of animal communication systems, we applied a series of information theory statistics to a statistically categorized set of bottlenose dolphin Tursiops truncatus, whistle vocalizations. First, we use the first-order entropic relation in a Zipf-type diagram (Zipf 1949 Human Behavior and the Principle of Least Effort) to illustrate the application of temporal statistics as comparative indicators of repertoire complexity, and as possible predictive indicators of acquisition/learning in animal vocal repertoires. Second, we illustrate the need for more extensive temporal data sets when examining the higher entropic orders, indicative of higher levels of internal informational structure, of such vocalizations, which could begin to allow the statistical reconstruction of repertoire organization. Third, we propose using 'communication capacity' as a measure of the degree of temporal structure and complexity of statistical correlation, represented by the values of entropic order, as an objective tool for interspecies comparison of communication complexity. In doing so, we introduce a new comparative measure, the slope of Shannon entropies, and illustrate how it potentially can be used to compare the organizational complexity of vocal repertoires across a diversity of species. Finally, we illustrate the nature and predictive application of these higher-order entropies using a preliminary

  2. Applying cognitive load theory to the redesign of a conventional database systems course

    Science.gov (United States)

    Mason, Raina; Seton, Carolyn; Cooper, Graham

    2016-01-01

    Cognitive load theory (CLT) was used to redesign a Database Systems course for Information Technology students. The redesign was intended to address poor student performance and low satisfaction, and to provide a more relevant foundation in database design and use for subsequent studies and industry. The original course followed the conventional structure for a database course, covering database design first, then database development. Analysis showed the conventional course content was appropriate but the instructional materials used were too complex, especially for novice students. The redesign of instructional materials applied CLT to remove split attention and redundancy effects, to provide suitable worked examples and sub-goals, and included an extensive re-sequencing of content. The approach was primarily directed towards mid- to lower performing students and results showed a significant improvement for this cohort with the exam failure rate reducing by 34% after the redesign on identical final exams. Student satisfaction also increased and feedback from subsequent study was very positive. The application of CLT to the design of instructional materials is discussed for delivery of technical courses.

  3. Influences of externally applied potential on the properties of microscopic particles in nonlinear quantum systems

    International Nuclear Information System (INIS)

    When the Schroedinger equation in quantum mechanics is replaced by the nonlinear Schroedinger equation to describe microscopic particles in nonlinear quantum systems, it has been verified that the nature of the particles differs considerably from those in quantum mechanics, where they are localized and have also wave-corpuscle duality due to the nonlinear interactions. In this case the influences of externally applied potentials in the nonlinear Schroedinger equation on the natures of the microscopic particles have been studied by a perturbation theory. The studied results show that the external potential can change the states of the microscopic particles, such as the positions, amplitude and wave forms, but cannot change the wave-corpuscle duality. In the meanwhile, we find further that the relationship between the external potential and change of positions of the particle satisfies the rule of motion of classical particles. Thus we know from this study that the kinetic energy term, (h2/2m)∇2φ, in the nonlinear Schroedinger equation can only make the microscopic particles have a wave feature, but the nonlinear interaction b|φ|2φ determines its corpuscle feature, their combination makes the microscopic particles have a wave-corpuscle duality, and the potential V(r→,t)φ changes only the positions, amplitude and wave form of the particles. Therefore the nonlinear interaction plays an important role in determination of the wave-corpuscle duality of microscopic particles in quantum theory.

  4. Efficiency and operating cost of electrocoagulation system applied to the treatment of dairy industry wastewater

    Directory of Open Access Journals (Sweden)

    Henrique Cesar Lopes Geraldino

    2015-07-01

    Full Text Available The objective of this study was to apply the technique of electrocoagulation (EC in the treatment of dairy industry wastewater, using a system of bench. It was used a source of 10 amps and an electrode of iron containing six plates of 14x6 cm. Were made variation of pH (4.5 to 6, intensity of electric current (1 to 2A and time of electrolysis (30 to 60 min.. The efficiency of the treatment was confirmed by analysis of turbidity, color and COD. The reduction of turbidity was greater than 98%, reaching a record 99.98%. The largest reduction in color was 94.90% and 11 of the 27 tests the efficiency was greater than 90%. The greatest reduction of COD was 96.36%. The treatment proved to be more efficient at pH 4.5, time 60 min. and current 1.5A. The estimated cost of operation was US$ 1.04 m3 which demonstrates the viability of treatment of dairy industry wastewater.

  5. Examples of New Models Applied in Selected Simulation Systems with Respect to Database

    Directory of Open Access Journals (Sweden)

    Z. Ignaszak

    2013-01-01

    Full Text Available The tolerance of damage rule progressively meets the approval in the design casting parts procedures. Therefore, there were appeared thenew challenges and expectations for permanent development of process virtualization in the mechanical engineering industry.Virtualization is increasingly developed on the stage of product design and materials technologies optimization. Increasing expectations of design and process engineers regarding the practical effectiveness of applied simulation systems with new proposed up-grades modules is observed. The purpose is to obtain simulation tools allowing the most possible realistic prognosis of the casting structure, including indication, with the highest possible probability, places in the casting that are endangered with the possibility of shrinkage– and gas porosity formation. This 3D map of discontinuities and structure transformed in local mechanical characteristics are used to calculate the local stresses and safety factors. The needs of tolerance of damage and new approach to evaluate the quality of such prognosis must be defined. These problems of validation of new models/modules used to predict the shrinkage– and gas porosity including the chosen structure parameters in the example of AlSi7 alloy are discussed in the paper.

  6. Toward a Blended Ontology: Applying Knowledge Systems to Compare Therapeutic and Toxicological Nanoscale Domains

    Directory of Open Access Journals (Sweden)

    Christopher M. Grulke

    2012-01-01

    Full Text Available Bionanomedicine and environmental research share need common terms and ontologies. This study applied knowledge systems, data mining, and bibliometrics used in nano-scale ADME research from 1991 to 2011. The prominence of nano-ADME in environmental research began to exceed the publication rate in medical research in 2006. That trend appears to continue as a result of the growing products in commerce using nanotechnology, that is, 5-fold growth in number of countries with nanomaterials research centers. Funding for this research virtually did not exist prior to 2002, whereas today both medical and environmental research is funded globally. Key nanoparticle research began with pharmacology and therapeutic drug-delivery and contrasting agents, but the advances have found utility in the environmental research community. As evidence ultrafine aerosols and aquatic colloids research increased 6-fold, indicating a new emphasis on environmental nanotoxicology. User-directed expert elicitation from the engineering and chemical/ADME domains can be combined with appropriate Boolean logic and queries to define the corpus of nanoparticle interest. The study combined pharmacological expertise and informatics to identify the corpus by building logical conclusions and observations. Publication records informatics can lead to an enhanced understanding the connectivity between fields, as well as overcoming the differences in ontology between the fields.

  7. Polymer-based Drug Delivery Systems Applied to Insects Repellents Devices: A Review.

    Science.gov (United States)

    Barradas, Thaís Nogueira; Senna, Juliana Perdiz; Ricci, Eduardo; Mansur, Claudia Regina Elias

    2016-01-01

    Insects-borne diseases constitute a public health concern. Since there is no vaccine or curative treatment for many of these diseases, individual protection is the main approach to prevent them. Nowadays, the search for replacing synthetic molecules for insect repellents from natural sources, such as essential oils, is increasing. However, most of them present low efficiency compared to synthetic repellents. Therefore, decreasing skin permeation of synthetic repellents or yet, increasing effectiveness of natural repellents are challenges that must be overcome during the development of novel insect repellent formulations. In this context, polymer-based formulations allow entrapping active ingredients and provide release control. Encapsulation into polymeric micro/nanocapsules, cyclodextrins, polymeric micelles or hydrogels constitutes an approach to modify physicochemical properties of encapsulated molecules. Such techniques, applied in topical formulations, fabrics modification for personal protection, or food packaging have proved to be more effective in increasing repellency time and also in reducing drug dermal absorption, improving safety profiles of these products. In this work, the main synthetic and natural insect repellents are described as well as their polymeric carrier systems and their potential applications. PMID:26674198

  8. Results for exercise 1 of V1000-CT benchmark by GRS applying the system code ATHLET

    International Nuclear Information System (INIS)

    Full text of publication follows: Under the guidance of OECD an international VVER-1000 Benchmark is being defined. It consists of two phases and applies experimental data for comparison from the Kozloduy Nuclear Power Plant in Bulgaria. The paper describes the modelling considerations and results obtained by the GRS system code ATHLET for the Phase 1, Exercise 1. The simulated transient is a main coolant pump (MCP) switching on at reduced power with three MCPs in operation. In the ATHLET model the specified benchmark conditions are achieved through several steps of initializing the transient simulations: 1) steady state calculations at 100% power. 2) switching off MCP number three. 3) stabilizing the new mass flow distributions in the primary loops and adjusting the steam generator water levels, 4) an external reactivity in the point kinetics model is introduced to decrease the reactor power to the specified level of about 30%. 5) after stabilizing the primary pressure at 15.6 MPa and the SG water level as specified, the benchmark transient is started. The paper describes in detail the considerations for the thermal-hydraulic nodalization schema of the four-loop model of NPP Kozloduy VVER-1000 reactor. Particular attention is paid on the reactor vessel modelling and especially of the upper reactor plenum nodalization. The presence of a perforated cylindrical barrel requires special attention because it can play an important role for determining the coolant mixing in the upper plenum in case of a reverse flow regime which is the case in the initial conditions of the specified transient. The effects of different modelling assumptions of mixing in the upper reactor plenum on the results of the Exercise 1 are presented and discussed. Sensitivity studies for relevant reactor parameters are performed. A comparison with the available experimental data available for the benchmark is shown. It can be concluded that the GRS system code ATHLET predicts with a sufficient

  9. Model-Based Systems Engineering With the Architecture Analysis and Design Language (AADL) Applied to NASA Mission Operations

    Science.gov (United States)

    Munoz Fernandez, Michela Miche

    2014-01-01

    The potential of Model Model Systems Engineering (MBSE) using the Architecture Analysis and Design Language (AADL) applied to space systems will be described. AADL modeling is applicable to real-time embedded systems- the types of systems NASA builds. A case study with the Juno mission to Jupiter showcases how this work would enable future missions to benefit from using these models throughout their life cycle from design to flight operations.

  10. Applying Augmented Reality to a Mobile-Assisted Learning System for Martial Arts Using Kinect Motion Capture

    Science.gov (United States)

    Hsu, Wen-Chun; Shih, Ju-Ling

    2016-01-01

    In this study, to learn the routine of Tantui, a branch of martial arts was taken as an object of research. Fitts' stages of motor learning and augmented reality (AR) were applied to a 3D mobile-assisted learning system for martial arts, which was characterized by free viewing angles. With the new system, learners could rotate the viewing angle of…

  11. Effects of emotional and perceptual-motor stress on a voice recognition system's accuracy: An applied investigation

    OpenAIRE

    Poock, Gary K.; Martin, B. Jay

    1984-01-01

    This was an applied investigation examining the ability of a speech recognition system to recognize speakers' inputs when the speakers were under different stress levels. Subjects were asked to speak to a voice recognition system under three conditions: 1) Normal office environment, 2) Emotional Stress and 3) Perceptual-Motor Stress. Results indicate a definite relationship between voice recognition system performance and the type of low stress reference patterns used to achieve recognition. ...

  12. Development of numerical analysis methods for natural circulation decay heat removal system applied to a large scale JSFR

    International Nuclear Information System (INIS)

    A decay heat removal system utilizing passive natural circulation is applied to a large scale Japan Sodium-cooled Fast Reactor. As preparing for the future licensing, a one-dimensional flow network method and a three-dimensional numerical analysis method were developed to evaluate core cooling capability and thermal transient under decay heat removal modes after reactor trip. The one-dimensional method was applied to a water test simulating the primary system of the reactor, while the three-dimensional method was applied to the water test and a sodium test focusing on the decay heat removal system. The numerical results of both methods have turned out to agree well with the test results. And then the thermal-hydraulic behavior under a typical decay heat removal mode of the reactor has been predicted by the three-dimensional method. (author)

  13. Genetic algorithm applied to a Soil-Vegetation-Atmosphere system: Sensitivity and uncertainty analysis

    Science.gov (United States)

    Schneider, Sébastien; Jacques, Diederik; Mallants, Dirk

    2010-05-01

    Numerical models are of precious help for predicting water fluxes in the vadose zone and more specifically in Soil-Vegetation-Atmosphere (SVA) systems. For such simulations, robust models and representative soil hydraulic parameters are required. Calibration of unsaturated hydraulic properties is known to be a difficult optimization problem due to the high non-linearity of the water flow equations. Therefore, robust methods are needed to avoid the optimization process to lead to non-optimal parameters. Evolutionary algorithms and specifically genetic algorithms (GAs) are very well suited for those complex parameter optimization problems. Additionally, GAs offer the opportunity to assess the confidence in the hydraulic parameter estimations, because of the large number of model realizations. The SVA system in this study concerns a pine stand on a heterogeneous sandy soil (podzol) in the Campine region in the north of Belgium. Throughfall and other meteorological data and water contents at different soil depths have been recorded during one year at a daily time step in two lysimeters. The water table level, which is varying between 95 and 170 cm, has been recorded with intervals of 0.5 hour. The leaf area index was measured as well at some selected time moments during the year in order to evaluate the energy which reaches the soil and to deduce the potential evaporation. Water contents at several depths have been recorded. Based on the profile description, five soil layers have been distinguished in the podzol. Two models have been used for simulating water fluxes: (i) a mechanistic model, the HYDRUS-1D model, which solves the Richards' equation, and (ii) a compartmental model, which treats the soil profile as a bucket into which water flows until its maximum capacity is reached. A global sensitivity analysis (Morris' one-at-a-time sensitivity analysis) was run previously to the calibration, in order to check the sensitivity in the chosen parameter search space. For

  14. From LCA to PSS – Making leaps towards sustainability by applying product/service-system thinking in product development

    DEFF Research Database (Denmark)

    Bey, Niki; McAloone, Timothy Charles

    optimisations on all system levels. However, as the act of ecodesign conventionally focuses on physical products, the search for potential optimisations is usually directed ‘downwards’, i.e. towards lower system levels, resulting in optimised components within products rather than optimised products within...... their surrounding systems. This paper will exemplify that when broadening the ecodesign horizon to environmental product/service-system (PSS) design, there is a better possibility of applying a system-oriented life cycle thinking approach, and therefore a potential to yield extreme improvements towards...

  15. Digital physical startup system applying to physical startup experiment of HTR-10

    International Nuclear Information System (INIS)

    10 MW high temperature gas cooled reactor firstly used digital physical startup system to realize to be critical. The author introduces the structure of hardware and human-computer interface function of digital physical startup system, the application characteristics of the system relate to 10 MW high temperature gas cooled reactor and experiments have fulfilled by using the system

  16. Detecting Danger: Applying a Novel Immunological Concept to Intrusion Detection Systems

    CERN Document Server

    Greensmith, Julie; Twycross, Jamie

    2010-01-01

    In recent years computer systems have become increasingly complex and consequently the challenge of protecting these systems has become increasingly difficult. Various techniques have been implemented to counteract the misuse of computer systems in the form of firewalls, anti-virus software and intrusion detection systems. The complexity of networks and dynamic nature of computer systems leaves current methods with significant room for improvement. Computer scientists have recently drawn inspiration from mechanisms found in biological systems and, in the context of computer security, have focused on the human immune system (HIS). The human immune system provides a high level of protection from constant attacks. By examining the precise mechanisms of the human immune system, it is hoped the paradigm will improve the performance of real intrusion detection systems. This paper presents an introduction to recent developments in the field of immunology. It discusses the incorporation of a novel immunological parad...

  17. Unraveling Landscape Complexity: Land Use/Land Cover Changes and Landscape Pattern Dynamics (1954-2008) in Contrasting Peri-Urban and Agro-Forest Regions of Northern Italy

    Science.gov (United States)

    Smiraglia, D.; Ceccarelli, T.; Bajocco, S.; Perini, L.; Salvati, L.

    2015-10-01

    This study implements an exploratory data analysis of landscape metrics and a change detection analysis of land use and population density to assess landscape dynamics (1954-2008) in two physiographic zones (plain and hilly-mountain area) of Emilia Romagna, northern Italy. The two areas are characterized by different landscape types: a mixed urban-rural landscape dominated by arable land and peri-urban settlements in the plain and a traditional agro-forest landscape in the hilly-mountain area with deciduous and conifer forests, scrublands, meadows, and crop mosaic. Urbanization and, to a lesser extent, agricultural intensification were identified as the processes underlying landscape change in the plain. Land abandonment determining natural forestation and re-forestation driven by man was identified as the process of change most representative of the hilly-mountain area. Trends in landscape metrics indicate a shift toward more fragmented and convoluted patterns in both areas. Number of patches, the interspersion and juxtaposition index, and the large patch index are the metrics discriminating the two areas in terms of landscape patterns in 1954. In 2008, mean patch size, edge density, interspersion and juxtaposition index, and mean Euclidean nearest neighbor distance were the metrics with the most different spatial patterns in the two areas. The exploratory data analysis of landscape metrics contributed to link changes over time in both landscape composition and configuration providing a comprehensive picture of landscape transformations in a wealthy European region. Evidence from this study are hoped to inform sustainable land management designed for homogeneous landscape units in similar socioeconomic contexts.

  18. A decentralized Fuzzy Logic enhanced variable structure controller applied to load frequency control system

    International Nuclear Information System (INIS)

    This paper present a variable structure based approach to the load frequency control system problem in electric power generation systems. This approach combines the salient features of both variable structure and Fuzzy systems to achieve high-performance and robustness. The control signal consists of equivalent control, switching control and Fuzzy control components. The influence of system nonlinearities such as generation rate constraint and governor dead band is considered. In results show that the system responses are strongly robust for parameter variations

  19. Applied dynamics

    CERN Document Server

    Schiehlen, Werner

    2014-01-01

    Applied Dynamics is an important branch of engineering mechanics widely applied to mechanical and automotive engineering, aerospace and biomechanics as well as control engineering and mechatronics. The computational methods presented are based on common fundamentals. For this purpose analytical mechanics turns out to be very useful where D’Alembert’s principle in the Lagrangian formulation proves to be most efficient. The method of multibody systems, finite element systems and continuous systems are treated consistently. Thus, students get a much better understanding of dynamical phenomena, and engineers in design and development departments using computer codes may check the results more easily by choosing models of different complexity for vibration and stress analysis.

  20. Decomposition with thermoeconomic isolation applied to the optimal synthesis/design and operation of an advanced tactical aircraft system

    Energy Technology Data Exchange (ETDEWEB)

    Rancruel, Diego F. [Center for Energy Systems Research, Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060 (United States); Spakovsky, Michael R. von [Center for Energy Systems Research, Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060 (United States)]. E-mail: vonspako@vt.edu

    2006-12-15

    A decomposition methodology based on the concept of 'thermoeconomic isolation' and applied to the synthesis/design and operational optimization of an advanced tactical fighter aircraft is the focus of this paper. The total system is composed of six sub-systems of which five participate with degrees of freedom (493) in the optimization. They are the propulsion sub-system (PS), the environmental control sub-system (ECS), the fuel loop subsystem (FLS), the vapor compression and Polyalphaolefin (PAO) loops sub-system (VC/PAOS), and the airframe sub-system (AFS). The sixth subsystem comprises the expendable and permanent payloads as well as the equipment group. For each of the first five, detailed thermodynamic, geometric, physical, and aerodynamic models at both design and off-design were formulated and implemented. The most promising set of aircraft sub-system and system configurations were then determined based on both an energy integration and aerodynamic performance analysis at each stage of the mission (including the transient ones). Conceptual, time, and physical decomposition were subsequently applied to the synthesis/design and operational optimization of these aircraft configurations as well as to the highly dynamic process of heat generation and dissipation internal to the subsystems. The physical decomposition strategy used (i.e. Iterative Local-Global Optimization-ILGO) is the first to successfully closely approach the theoretical condition of 'thermoeconomic isolation' when applied to highly complex, highly dynamic non-linear systems. Developed at our Center for Energy Systems research, it has been effectively applied to a number of complex stationary and transportation applications.

  1. Decomposition with thermoeconomic isolation applied to the optimal synthesis/design and operation of an advanced tactical aircraft system

    International Nuclear Information System (INIS)

    A decomposition methodology based on the concept of 'thermoeconomic isolation' and applied to the synthesis/design and operational optimization of an advanced tactical fighter aircraft is the focus of this paper. The total system is composed of six sub-systems of which five participate with degrees of freedom (493) in the optimization. They are the propulsion sub-system (PS), the environmental control sub-system (ECS), the fuel loop subsystem (FLS), the vapor compression and Polyalphaolefin (PAO) loops sub-system (VC/PAOS), and the airframe sub-system (AFS). The sixth subsystem comprises the expendable and permanent payloads as well as the equipment group. For each of the first five, detailed thermodynamic, geometric, physical, and aerodynamic models at both design and off-design were formulated and implemented. The most promising set of aircraft sub-system and system configurations were then determined based on both an energy integration and aerodynamic performance analysis at each stage of the mission (including the transient ones). Conceptual, time, and physical decomposition were subsequently applied to the synthesis/design and operational optimization of these aircraft configurations as well as to the highly dynamic process of heat generation and dissipation internal to the subsystems. The physical decomposition strategy used (i.e. Iterative Local-Global Optimization-ILGO) is the first to successfully closely approach the theoretical condition of 'thermoeconomic isolation' when applied to highly complex, highly dynamic non-linear systems. Developed at our Center for Energy Systems research, it has been effectively applied to a number of complex stationary and transportation applications

  2. Applied Industrial Electronics. Sensors and Logic Systems. Oklahoma Trade and Industrial Education.

    Science.gov (United States)

    Harwick, Jim; Siebert, Leo

    This curriculum guide, part of a series of curriculum guides dealing with industrial electricity and industrial electronics, is designed for use in teaching a course in applied industrial electronics. The first half of the guide contains units on remote sensing devices and the industrial uses of transducers. The second part of the course,…

  3. Fundamentalization of knowledge system on applied mathematics in teaching students of inverse problems for differential equations

    Science.gov (United States)

    Bidaibekov, Yessen Y.; Kornilov, Viktor S.; Kamalova, Guldina B.; Akimzhan, Nagima Sh.

    2015-09-01

    Methodical aspects of teaching students of higher educational institutions of natural science orientations of training of inverse problems for differential equations are considered in the article. A fact that an academic knowledge and competence in the field of applied mathematics is formed during such training is taken into consideration.

  4. A Study on Applying of Business Rules Management Systems in Enterprises

    OpenAIRE

    Avdejenkov, Vladimir

    2009-01-01

    The paper analyses topicalities of implementation of business rules and business rules management systems into enterprise business management information systems. It is rare nowadays to find a company which is not using an ERP (Enterprise Resource Planning) system for its own needs. These systems are intended to perform a centralized accounting of enterprise activities, including financial, logistic, production, service management and human resource management accounting. Darbe analizuojam...

  5. A Proven Methodology for Developing Secure Software and Applying It to Ground Systems

    Science.gov (United States)

    Bailey, Brandon

    2016-01-01

    Part Two expands upon Part One in an attempt to translate the methodology for ground system personnel. The goal is to build upon the methodology presented in Part One by showing examples and details on how to implement the methodology. Section 1: Ground Systems Overview; Section 2: Secure Software Development; Section 3: Defense in Depth for Ground Systems; Section 4: What Now?

  6. Applying Web Usage Mining for Personalizing Hyperlinks in Web-Based Adaptive Educational Systems

    Science.gov (United States)

    Romero, Cristobal; Ventura, Sebastian; Zafra, Amelia; de Bra, Paul

    2009-01-01

    Nowadays, the application of Web mining techniques in e-learning and Web-based adaptive educational systems is increasing exponentially. In this paper, we propose an advanced architecture for a personalization system to facilitate Web mining. A specific Web mining tool is developed and a recommender engine is integrated into the AHA! system in…

  7. Comparative studies of isolation systems applied to a compact LMR reactor module

    International Nuclear Information System (INIS)

    We investigated the responses to horizontal input ground motions of a compact LMR reactor module incorporated with three different isolation systems: a steel plate reinforced elastomer pad design without friction plates (called the linear system); the same pad with friction plates (called the bilinear system); and the Alexisismon design which uses rubber springs and teflon pot bearings to carry horizontal and vertical loads, respectively. Essential parameters characterizing the isolation systems, such as isolation frequency, are chosen consistent with those available in the open literature for these systems. All three isolation systems significantly reduce the horizontal shear force transmitted to the reactor system. The bilinear system, due to the friction plates, limits the maximum shear force transmitted to a preset value. The Alexisismon design, which may use a very soft spring and, therefore, exhibits a much lower isolation frequency than the other two designs, gives the most reduction in shear force. Among these three isolation systems, the linear system yields the smallest maximum acceleration for the isolated reactor. The Alexisismon design not only produced the highest maximum acceleration, but also showed amplification in acceleration. Acceleration amplification is also observed in the bilinear system for some of the ground motions considered. It appears at this time that this acceleration amplification is caused by the nonlinearity of the isolation systems. Further study is definitely warranted. (orig.)

  8. A Controllability Approach for Resonant Compliant Systems: Applied to a Flapping Wing Micro Air Vehicle

    NARCIS (Netherlands)

    Peters, H.J.

    2016-01-01

    This thesis studies a controllability approach for general resonant compliant systems. These systems exploit resonance to obtain a specific dynamic response at relatively low actuation power. This type of systems is often lightweight, is scalable and minimizes frictional losses through the use of co

  9. Contemporary approaches to control system specification and design applied to KAON

    International Nuclear Information System (INIS)

    Large data acquisition and control systems have evolved from early centralized computer systems to become multi-processor, distributed systems. While the complexity of these systems has increased the ability to reliably manage their construction has not kept pace. Structured Analysis and Real-time Structured Analysis have been used successfully to specify systems but, from a project management viewpoint, both lead to different classes of problems during implementation and maintenance. The KAON Factory central control system study employed a uniform approach to requirements analysis and architectural design. The methodology was based on well established object-oriented principles and was free of the problems inherent in the older methodologies. The methodology is presently being used to implement two systems at TRIUMF

  10. Study of fieldbus technology applied in a sterilization plant control and safety systems

    International Nuclear Information System (INIS)

    Several sterilization processes have been used in these years for treatment of countless products. Some processes use high temperatures, thermal shocks and chemical agents. With the discovery of the ionizing radiation and its posterior technological developments turned possible application of that process, in 1960, also in the the sterilization, denominated radiation sterilization. This process became also applied in another areas of health and industrial as food conservation, gemstones enhancement and others. The radiation sterilization requests an effective control and it needs a high level of safety. The commercial use of the computers applied in industrial automation provides and the domain of new technologies in this field provides new applications then new designs now is possible. The Fieldbus technology, a new digital communication protocol, like a Local Area Network, can be an alternative in the cobalt-60 irradiation plant. The present work suggests, evaluates, qualifies and quantifies this possibility. (author)

  11. Preventing Control Constraint Violations by Use of Energy Balances for a Class of Coupled Systems: Applied to a Power Plant

    DEFF Research Database (Denmark)

    Odgaard, Peter Fogh; Stoustrup, Jakob

    2007-01-01

    In this paper a scheme is presented for preventing violations of control signal constraints in a class of coupled systems. The scheme is an add-on solution to the existing control system; it works like a fault tolerant scheme, by accommodating the problem then occurring. The proposed scheme recom...... and not to optimize performance during all conditions. The scheme is applied to an example with a coal mill pulverizing coal for a power plant.  ...

  12. On the use of sun trackers to improve maximum power point tracking controllers applied to photovoltaic systems

    OpenAIRE

    Jaen Fernandez, Carles; Pou Félix, Josep; Capellá Frau, Gabriel José; Arias Pujol, Antoni; Lamich Arocas, Manuel

    2009-01-01

    Nowadays power supply systems based on photovoltaic cells have two main drawbacks, even the primary energy is free and renewable. They are: production cost and efficiency. In order to increase their efficiency, it should be interesting that the energy transfer between cells and load was done at maximum level. In this paper the use of a sun tracker system is presented as an additional improvement applied to a photovoltaic installation that works under a maximum power point tracking (MPPT) c...

  13. Experience and regulatory activities on advanced instrumentation and control systems applied to nuclear power plants in Korea

    International Nuclear Information System (INIS)

    This paper describes the status for applying microprocessor-based systems to nuclear power plants in Korea and the regulatory activities performed by Korea Institute of Nuclear Safety (KINS). And this presents the development of safety and regulatory technology for advanced I and C systems that has been carried out as a part of the next generation reactor development program in Korea. (author). 3 refs, 4 figs, 1 tab

  14. Applied analysis and construction of Prevention, Monitoring and Early Warning System of Mountain Torrent Disaster

    Directory of Open Access Journals (Sweden)

    Irfan Jamil

    2013-10-01

    Full Text Available To prevent from the hazards of mountain torrent disasters, today's monitoring and early warning system is widely used in mountain areas to keep alert from the rainstorm. Mountain torrent disaster caused by the rainstorm and is one of the most important reasons, resulting in transportation blocks and mass casualties. Mountain torrent disaster occurs frequently depends on the weather of mountain's country. It can be distinguished and predicted by monitoring and early warning system to provide the safety reference in disaster presentation and reduction. This paper presents the analysis and key management of monitoring and early warning system of mountain torrent which mainly includes monitoring system and early warning system of water and rain information. In order to achieve better effect of disaster prevention and reduction, establish an organization system of mass observation and mass prevention and enhance training propaganda. The monitoring system of water and rain information mainly includes network layout of water and rain monitoring station, information acquisition, information transmission and communication networking and configuration of devices. Early warning system of mountain torrent is composed of platform-based early warning system of torrent defense and early warning system of torrent mass observation and mass prevention. And also appended short description of publicity and training includes popularization of knowledge about disaster prevention; preparations of disaster prevention, maintenance and operation of monitoring and warning facilities, publicity and rehearsal of proposal.

  15. Measurement system for two-dimensional magnetic field distributions, applied to the investigation of recording head fields

    NARCIS (Netherlands)

    Groenland, J.P.J.; Fluitman, J.H.J.

    1981-01-01

    The system described is built around a very accurate positioner into which a sensitive transducer and the object of analysis is mounted. The properties of the applied magnetoresistive transducer are described. This transducer, a very narrow permalloy strip placed at the edge of a glass substratum, c

  16. Applying the Dynamic Social Systems Model to HIV Prevention in a Rural African Context: The Maasai and the "Esoto" Dance

    Science.gov (United States)

    Siegler, Aaron J.; Mbwambo, Jessie K.; DiClemente, Ralph J.

    2013-01-01

    This study applied the Dynamic Social Systems Model (DSSM) to the issue of HIV risk among the Maasai tribe of Tanzania, using data from a cross-sectional, cluster survey among 370 randomly selected participants from Ngorongoro and Siha Districts. A culturally appropriate survey instrument was developed to explore traditions reportedly coadunate…

  17. The Research Mission of Universities of Applied Sciences and the Future Configuration of Higher Education Systems in Europe

    Science.gov (United States)

    Lepori, Benedetto; Kyvik, Svein

    2010-01-01

    This article presents a comparative analysis of the development of research in universities of applied sciences (UAS) in eight European countries and its implications for the configuration of the higher education system. The enhancement of research has mostly been seen as a case of academic drift where UAS attempt to become more similar to…

  18. An Investigation of Employees' Use of E-Learning Systems: Applying the Technology Acceptance Model

    Science.gov (United States)

    Lee, Yi-Hsuan; Hsieh, Yi-Chuan; Chen, Yen-Hsun

    2013-01-01

    The purpose of this study is to apply the technology acceptance model to examine the employees' attitudes and acceptance of electronic learning (e-learning) systems in organisations. This study examines four factors (organisational support, computer self-efficacy, prior experience and task equivocality) that are believed to influence…

  19. Systems thinking tools as applied to community-based participatory research: a case study.

    Science.gov (United States)

    BeLue, Rhonda; Carmack, Chakema; Myers, Kyle R; Weinreb-Welch, Laurie; Lengerich, Eugene J

    2012-12-01

    Community-based participatory research (CBPR) is being used increasingly to address health disparities and complex health issues. The authors propose that CBPR can benefit from a systems science framework to represent the complex and dynamic characteristics of a community and identify intervention points and potential "tipping points." Systems science refers to a field of study that posits a holistic framework that is focused on component parts of a system in the context of relationships with each other and with other systems. Systems thinking tools can assist in intervention planning by allowing all CBPR stakeholders to visualize how community factors are interrelated and by potentially identifying the most salient intervention points. To demonstrate the potential utility of systems science tools in CBPR, the authors show the use of causal loop diagrams by a community coalition engaged in CBPR activities regarding youth drinking reduction and prevention. PMID:22467637

  20. A diagnostic procedure for applying the social-ecological systems framework in diverse cases

    OpenAIRE

    Jochen Hinkel; Cox, Michael E.; Binder, Claudia R.; Thomas Falk

    2015-01-01

    The framework for analyzing sustainability of social-ecological systems (SES) framework of Elinor Ostrom is a multitier collection of concepts and variables that have proven to be relevant for understanding outcomes in diverse SES. The first tier of this framework includes the concepts resource system (RS) and resource units (RU), which are then further characterized through lower tier variables such as clarity of system boundaries and mobility. The long-term goal of framework development is...

  1. Applying the Australian and New Zealand Risk Management Standard to Information Systems in SMES

    OpenAIRE

    Robyn Davidson; Susan Lambert

    2004-01-01

    This paper advocates the use of the Australia/New Zealand Risk Management Standard (SA/SNZ, 1999) in conjunction with of a modified version of Birch and McEvoy’s (1992) Structured Risk Analysis for Information Systems (SRA-IS) to identify information systems security risks in SMEs. The use of Internet based commerce by SMEs exposes them to information systems security risks that they are ill equipped to recognise let alone mitigate. Unlike the identification of some business risks, identifica...

  2. Analysis of Information Systems Applied to Evaluating Tourism Service Quality Based on Organizational Impact

    OpenAIRE

    Min Wei

    2012-01-01

    Organizational impact on information systems plays an important role for tourism managers’ attention towards improving tourism service quality. As tourism service quality depends on information systems, which is important to determine what aspects of organizational impact that are critical to the managers of tourism enterprises to devise effective tourism service quality improvement strategies. In this paper, the model of the relationship of information systems, tourism service quality ...

  3. Applying IEEE storage system management standards at the National Storage Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Louis, S.; Hyer, S.W.

    1992-12-04

    Since its inception in 1990, the IEEE Storage System Standards Working Group has identified storage-system management as an area in need of further development The pressing need for standards in storage-system management arises from the requirement to exchange management information and to provide control in a consistent predictable manner between the components of a storage system. An appropriate set of management standards will allow multiple vendors to supply storage management subsystems or applications that are integral to or compatible with new storage systems conforming to future IEEE standards. An early, practical application of IEEE storage-system-management work is being pursued at the National Storage Laboratory (NSL), a recently-formed industrial collaboration at Lawrence Livermore National Laboratory. The NSL`s purpose is to develop advanced hardware and software technologies for high-performance, distributed storage systems. Since storage system management is of critical concern, it is being explored in depth at the NSL. Work was initiated to define basic management requirements and develop generalized graphical-user-interface tools using remote-procedure-call mechanisms to implement the NSL`s conceptual management framework. Several constraints were imposed on the development of early versions of this work to maintain compatibility with the NSL`s underlying UniTree-based software architecture and to provide timely prototypes and proof of concept. The project leverages the on-going standards work of the IEEE Storage System Standards Working Group (SSSWG) and also explores some of the relationships and interactions between IEEE storage-system management and more well known management methods for distributed systems and networks. It will have long term benefits by providing ``real-life`` storage-system-management requirements to the IEEE SSSWG for validation of evolving standards.

  4. Applying systems biology methods to the study of human physiology in extreme environments

    OpenAIRE

    Edwards, Lindsay; Thiele, Ines

    2013-01-01

    Systems biology is defined in this review as ‘an iterative process of computational model building and experimental model revision with the aim of understanding or simulating complex biological systems’. We propose that, in practice, systems biology rests on three pillars: computation, the omics disciplines and repeated experimental perturbation of the system of interest. The number of ethical and physiologically relevant perturbations that can be used in experiments on healthy humans is extr...

  5. The Benefits of Applying CRM Systems in Manufacturing Enterprises - Lessons from Practice

    OpenAIRE

    Oreský Milan

    2010-01-01

    Article contribution is to present in compound form results of survey about CRM systems performance, with orientation to exploitation of CRM software solutions, their assets towards development of relationships with customers and impact on company economic results. We state, how perceive CRM concept personnel within several companies also reasons of CRM system implementation and what are expectations. Major part of article is valuation of CRM system and its performance in production companies.

  6. Optimum systems design with random input and output applied to solar water heating

    Science.gov (United States)

    Abdel-Malek, L. L.

    1980-03-01

    Solar water heating systems are evaluated. Models were developed to estimate the percentage of energy supplied from the Sun to a household. Since solar water heating systems have random input and output queueing theory, birth and death processes were the major tools in developing the models of evaluation. Microeconomics methods help in determining the optimum size of the solar water heating system design parameters, i.e., the water tank volume and the collector area.

  7. In Situ Soft X-ray Spectroscopies Applied to Atmospheric Corrosion And Related Systems

    OpenAIRE

    Forsberg, Johan

    2009-01-01

    This thesis concerns the application of various soft x-ray spectroscopic methods (soft x-ray absorption, SXA, and emission, SXE) to complex, non-vacuum compatible systems, including liquids and multi-phase systems. The design, construction, and application of new instrumentation for in situ spectroscopy is described in detail. This includes sample holders using thin soft x-ray transparent membranes to enable measurements on systems completely isolated from vacuum, enabling flow of e.g. liquid...

  8. Applying Systems Thinking to Examine and Reduce Dependency on Food Banks

    OpenAIRE

    Juwaeriah Abdussamad

    2014-01-01

    Systems thinking is the art of understanding interconnections between various disciplines thereby unwinding the existing complexity. Most of the real world problems are complex, take for the example the increasing dependency rate on food banks. While various factors contribute towards it, not much has been done to bring the take off the number of dependents. By viewing this system from a holistic systems thinking lens, one explores the issue in depth. We realise the universally acceptable sol...

  9. ANALYTIC NETWORK PROCESS AND BALANCED SCORECARD APPLIED TO THE PERFORMANCE EVALUATION OF PUBLIC HEALTH SYSTEMS

    Directory of Open Access Journals (Sweden)

    Marco Aurélio Reis dos Santos

    2015-08-01

    Full Text Available The performance of public health systems is an issue of great concern. After all, to assure people's quality of life, public health systems need different kinds of resources. Balanced Scorecard provides a multi-dimensional evaluation framework. This paper presents the application of the Analytic Network Process and Balanced Scorecard in the performance evaluation of a public health system in a typical medium-sized Southeastern town in Brazil.

  10. An assessment tool applied to manure management systems using innovative technologies

    DEFF Research Database (Denmark)

    Sørensen, Claus G.; Jacobsen, Brian H.; Sommer, Sven G.

    2003-01-01

    operational and cost-effective animal manure handling technologies. An assessment tool covering the whole chain of the manure handling system from the animal houses to the field has been developed. The tool enables a system-oriented evaluation of labour demand, machinery capacity and costs related to the...... tanker transport may reduce labour requirements, increase capacity, and open up new ways for reducing ammonia emission. In its most efficient configuration, the use of umbilical systems may reduce the labour requirement by about 40% and increase capacity by 80%. However, these systems are costly and will...

  11. Embedded Web Technology: Applying World Wide Web Standards to Embedded Systems

    Science.gov (United States)

    Ponyik, Joseph G.; York, David W.

    2002-01-01

    Embedded Systems have traditionally been developed in a highly customized manner. The user interface hardware and software along with the interface to the embedded system are typically unique to the system for which they are built, resulting in extra cost to the system in terms of development time and maintenance effort. World Wide Web standards have been developed in the passed ten years with the goal of allowing servers and clients to intemperate seamlessly. The client and server systems can consist of differing hardware and software platforms but the World Wide Web standards allow them to interface without knowing about the details of system at the other end of the interface. Embedded Web Technology is the merging of Embedded Systems with the World Wide Web. Embedded Web Technology decreases the cost of developing and maintaining the user interface by allowing the user to interface to the embedded system through a web browser running on a standard personal computer. Embedded Web Technology can also be used to simplify an Embedded System's internal network.

  12. Explotation system of the external cold for refrigerated areas applied in Willys supermarket

    OpenAIRE

    Martínez de Irujo Echeverría, Mikel

    2010-01-01

    On the present project it is going to be designed an innovator and new system to takes external free cold as a complementary purpose for the standard system to supply cold. The main objective is to design a real system that could be installed with guaranty of work. This engine much be the most efficient possible to save the most of electric energy cost. How the utilization of this system is totally linked to the external weather it will be studied also the different work condit...

  13. Applying GIS to Develop a Web-Based Spatial-Person-Temporal History Educational System

    Science.gov (United States)

    Lo, Jia-Jiunn; Chang, Chuen-Jung; Tu, Hsiao-Han; Yeh, Shiou-Wen

    2009-01-01

    Developing interactive history learning materials to facilitate historical thinking is one of the challenges in history teaching and learning. This study developed a web-based history educational system, which has used the acronym HES-SPATO (history educational system based on SPATO), to increase the understandability of history learning…

  14. Set Theory Applied to Uniquely Define the Inputs to Territorial Systems in Emergy Analyses

    Science.gov (United States)

    The language of set theory can be utilized to represent the emergy involved in all processes. In this paper we use set theory in an emergy evaluation to ensure an accurate representation of the inputs to territorial systems. We consider a generic territorial system and we describ...

  15. Applying Legal Socialization to the Child Welfare System: Do Youths' Perceptions of Caseworkers Matter?

    Science.gov (United States)

    Kolivoski, Karen M.; Shook, Jeffrey J.; Johnson, Heath C.; Goodkind, Sara; Fusco, Rachel; DeLisi, Matt; Vaughn, Michael G.

    2016-01-01

    Background: Legal socialization is the process through which young people develop beliefs in the legitimacy of the law and legal system. Research has examined how perceptions of interactions with authority figures influence beliefs regarding the legitimacy of laws and legal system, thereby shaping compliance with the law (Fagan and Tyler in…

  16. User-centred system design approach applied on a robotic flexible endoscope

    NARCIS (Netherlands)

    Ruiter, J.G.; Voort, van der M.C.; Bonnema, G.M.

    2013-01-01

    Complex systems, like surgical robots, are designed by engineers. It is very difficult for them to determine the different needs and desires of all stakeholders. Especially when designed from scratch, end user input is essential in creating a system that has added value, is user friendly, and can be

  17. Closing the Loop with Sensors in Commercial Building Systems: Applying Lessons from Automotive Vehicles

    Science.gov (United States)

    Mantese, Joseph

    2011-08-01

    Automotive systems have evolved extensively over the past 50 years, providing a fully integrated system of sub-systems that work in concert for optimal vehicle level closed loop control. In this talk we look at several automotive sub-systems: stability and control, safety and security, emissions and comfort, diagnostics and maintenance, infotainment and communications; with an eye toward understanding their technology drivers and associated value propositions. Conversely, we examine how commercial building systems currently are represented as a collection of sub-systems that often work independently of each other for local optimization, often relying upon open loop control systems developed and installed decades ago. Reasoning primarily by analogy we explore opportunities for energy and efficiency, comfort and environment, and safety/security; asking whether there is sufficient value associated with a new class of building sensors and how those technologies might be brought to bear in improving performance. Finally, we examine the fundamental architecture of detection systems built upon sensing elements, with the aim of understanding trade-offs between: detection, false alarm rate, power, and cost.

  18. Closing the Loop with Sensors in Commercial Building Systems: Applying Lessons from Automotive Vehicles

    Energy Technology Data Exchange (ETDEWEB)

    Mantese, Joseph [United Technologies Corporation' s Research Center (United States)

    2011-08-17

    Automotive systems have evolved extensively over the past 50 years, providing a fully integrated system of sub-systems that work in concert for optimal vehicle level closed loop control. In this talk we look at several automotive sub-systems: stability and control, safety and security, emissions and comfort, diagnostics and maintenance, infotainment and communications; with an eye toward understanding their technology drivers and associated value propositions. Conversely, we examine how commercial building systems currently are represented as a collection of sub-systems that often work independently of each other for local optimization, often relying upon open loop control systems developed and installed decades ago. Reasoning primarily by analogy we explore opportunities for energy and efficiency, comfort and environment, and safety/security; asking whether there is sufficient value associated with a new class of building sensors and how those technologies might be brought to bear in improving performance. Finally, we examine the fundamental architecture of detection systems built upon sensing elements, with the aim of understanding trade-offs between: detection, false alarm rate, power, and cost.

  19. Genetic Algorithm Based Multi-Agent System Applied to Test Generation

    Science.gov (United States)

    Meng, Anbo; Ye, Luqing; Roy, Daniel; Padilla, Pierre

    2007-01-01

    Automatic test generating system in distributed computing context is one of the most important links in on-line evaluation system. Although the issue has been argued long since, there is not a perfect solution to it so far. This paper proposed an innovative approach to successfully addressing such issue by the seamless integration of genetic…

  20. Closing the Loop with Sensors in Commercial Building Systems: Applying Lessons from Automotive Vehicles

    International Nuclear Information System (INIS)

    Automotive systems have evolved extensively over the past 50 years, providing a fully integrated system of sub-systems that work in concert for optimal vehicle level closed loop control. In this talk we look at several automotive sub-systems: stability and control, safety and security, emissions and comfort, diagnostics and maintenance, infotainment and communications; with an eye toward understanding their technology drivers and associated value propositions. Conversely, we examine how commercial building systems currently are represented as a collection of sub-systems that often work independently of each other for local optimization, often relying upon open loop control systems developed and installed decades ago. Reasoning primarily by analogy we explore opportunities for energy and efficiency, comfort and environment, and safety/security; asking whether there is sufficient value associated with a new class of building sensors and how those technologies might be brought to bear in improving performance. Finally, we examine the fundamental architecture of detection systems built upon sensing elements, with the aim of understanding trade-offs between: detection, false alarm rate, power, and cost.

  1. Geographic Information Systems as Applied to the Manipulation of Environmental Data.

    Science.gov (United States)

    Hill, J. M.; And Others

    1983-01-01

    Discusses two aspects of a Geographic Information System (GIS), a computerized system for processing geographic and/or mapped data and components/implementation of a GIS and GIS demonstration in natural resources management. Demonstrations related to lignite mining permit requirements in coastal zone, and location of potential landfills/hazardous…

  2. Applying the Australian and New Zealand Risk Management Standard to Information Systems in SMES

    Directory of Open Access Journals (Sweden)

    Robyn Davidson

    2004-11-01

    Full Text Available This paper advocates the use of the Australia/New Zealand Risk Management Standard (SA/SNZ, 1999 in conjunction with of a modified version of Birch and McEvoy’s (1992 Structured Risk Analysis for Information Systems (SRA-IS to identify information systems security risks in SMEs. The use of Internet based commerce by SMEs exposes them to information systems security risks that they are ill equipped to recognise let alone mitigate. Unlike the identification of some business risks, identification of risks associated with information systems requires certain technical expertise. The structure of the existing information system must be understood and modelled before risks can be identified and it is acknowledged that the required technical expertise may not be present in SMEs, thus the involvement of information systems consultants may be necessary. Once the information system has been modelled little information systems expertise is required to complete the analysis, keeping consultant involvement to a minimum and maximising owner/manager involvement.

  3. Supervisory System and Multivariable Control Applying Weighted Fuzzy-PID Logic in an Alcoholic Fermentation Process

    Directory of Open Access Journals (Sweden)

    Márcio Mendonça

    2015-10-01

    Full Text Available In this work, it is analyzed a multivariate system control of an alcoholic fermentation process with no minimum phase. The control is made with PID classic controllers associated with a supervisory system based on Fuzzy Systems. The Fuzzy system, a priori, send set-points to PID controllers, but also adds protection functions, such as if the biomass valued is at zero or very close. The Fuzzy controller changes the campaign to prevent or mitigate the paralyzation of the process. Three control architectures based on Fuzzy Control Systems are presented and compared in performance with classic control in different campaigns. The third architecture, in particular, adds an adaptive function. A brief summary of Fuzzy theory and correlated works will be presented. And, finally simulations results, conclusions and future works end the article.

  4. Fuzzy-Skyhook Control for Active Suspension Systems Applied to a Full Vehicle Model

    Directory of Open Access Journals (Sweden)

    Aref M.A. Soliman

    2012-04-01

    Full Text Available Nowadays, most modern vehicles are equipped with controlled suspension systems for improving the vehicle ride comfort. Therefore, this paper is concerned with a theoretical study for the ride comfort performance of the vehicle. The theoretical investigation includes a suggestion of an active suspension system controller using fuzzy-skyhook control theory, which offers new opportunities for the improvement of vehicle ride performance. The ride comfort of the active suspension system has been evaluated using a 7 degree of freedom full vehicle mathematical model. The simulation results are presented in the time and frequency domain, also in terms of RMS values, and it’s shown that the proposed active suspension system with fuzzy-skyhook control improved the vehicle ride quality in terms of body acceleration, suspension working space and dynamic tyre load in comparison with the passive and skyhook suspension systems.

  5. Software engineering principles applied to large healthcare information systems--a case report.

    Science.gov (United States)

    Nardon, Fabiane Bizinella; de A Moura, Lincoln

    2007-01-01

    São Paulo is the largest city in Brazil and one of the largest cities in the world. In 2004, São Paulo City Department of Health decided to implement a Healthcare Information System to support managing healthcare services and provide an ambulatory health record. The resulting information system is one of the largest public healthcare information systems ever built, with more than 2 million lines of code. Although statistics shows that most software projects fail, and the risks for the São Paulo initiative were enormous, the information system was completed on-time and on-budget. In this paper, we discuss the software engineering principles adopted that allowed to accomplish that project's goals, hoping that sharing the experience of this project will help other healthcare information systems initiatives to succeed. PMID:17911673

  6. Applying a semantic information Petri Net modeling method to AUV systems design

    Institute of Scientific and Technical Information of China (English)

    FENG Xiao-ning; WANG Shuo; WANG Zhuo; LIU Qun

    2008-01-01

    This paper informally introduces colored object-oriented Petri Nets(COOPN) with the application of the AUV system. According to the characteristic of the AUV system's running environment,the object-oriented method is used in this paper not only to dispart system modules but also construct the refined running model of AUV system,then the colored Petri Net method is used to establish hierarchically detailed model in order to get the performance analyzing information of the system. After analyzing the model implementation,the errors of architecture designing and function realization can be found. If the errors can be modified on time,the experiment time in the pool can be reduced and the cost can be saved.

  7. Applying Diagnostics to Enhance Cable System Reliability (Cable Diagnostic Focused Initiative, Phase II)

    Energy Technology Data Exchange (ETDEWEB)

    Hartlein, Rick [Georgia Tech Research Corporation (GTRC), Atlanta, GA (United States). National Electric Energy Testing, Research and Applications Center (NEETRAC); Hampton, Nigel [Georgia Tech Research Corporation (GTRC), Atlanta, GA (United States). National Electric Energy Testing, Research and Applications Center (NEETRAC); Perkel, Josh [Georgia Tech Research Corporation (GTRC), Atlanta, GA (United States). National Electric Energy Testing, Research and Applications Center (NEETRAC); Hernandez, JC [Univ. de Los Andes, Merida (Venezuela); Elledge, Stacy [Georgia Tech Research Corporation (GTRC), Atlanta, GA (United States). National Electric Energy Testing, Research and Applications Center (NEETRAC); del Valle, Yamille [Georgia Tech Research Corporation (GTRC), Atlanta, GA (United States). National Electric Energy Testing, Research and Applications Center (NEETRAC); Grimaldo, Jose [Georgia Inst. of Technology, Atlanta, GA (United States). School of Electrical and Computer Engineering; Deku, Kodzo [Georgia Inst. of Technology, Atlanta, GA (United States). George W. Woodruff School of Mechanical Engineering

    2016-02-01

    The Cable Diagnostic Focused Initiative (CDFI) played a significant and powerful role in clarifying the concerns and understanding the benefits of performing diagnostic tests on underground power cable systems. This project focused on the medium and high voltage cable systems used in utility transmission and distribution (T&D) systems. While many of the analysis techniques and interpretations are applicable to diagnostics and cable systems outside of T&D, areas such as generating stations (nuclear, coal, wind, etc.) and other industrial environments were not the focus. Many large utilities in North America now deploy diagnostics or have changed their diagnostic testing approach as a result of this project. Previous to the CDFI, different diagnostic technology providers individually promoted their approach as the “the best” or “the only” means of detecting cable system defects.

  8. A generalized concept for cost-effective structural design. [Statistical Decision Theory applied to aerospace systems

    Science.gov (United States)

    Thomas, J. M.; Hawk, J. D.

    1975-01-01

    A generalized concept for cost-effective structural design is introduced. It is assumed that decisions affecting the cost effectiveness of aerospace structures fall into three basic categories: design, verification, and operation. Within these basic categories, certain decisions concerning items such as design configuration, safety factors, testing methods, and operational constraints are to be made. All or some of the variables affecting these decisions may be treated probabilistically. Bayesian statistical decision theory is used as the tool for determining the cost optimum decisions. A special case of the general problem is derived herein, and some very useful parametric curves are developed and applied to several sample structures.

  9. Two fiber optics communication adapters apply to the control system of HIRFL-CSR

    International Nuclear Information System (INIS)

    The authors introduced two kinds of fiber adapters that apply to the engineering HIRFL-CSR. Including design of two adapters, operational principle, and hardware construction, field of application. How to control equipment which have the standard RS232 or RS485 interface at long distance by two adapters. Replace the RS485 bus with the fiber and the 485-Fiber Adapter, solved the problem of communication disturb. The requirements of control in the national great science engineering HIRFL-CSR are fulfilled. (authors)

  10. The fiber optics router apply to the control system of HIRFL-CSR

    International Nuclear Information System (INIS)

    The authors introduced a kind of Fiber Optic Router that we had designed specially applies to the engineering HIRFL-CSR (Heavy Ion Research Facility in Lanzhou). Including design principle, operational principle, and hardware construction, field of application. The router has standard communication interface such as RS232, RS485, Ethernet and Optics; setup of an optical communication network is simplified. It solved problems such as communication disturb. The requirements of control in the national great science engineering HIRFL-CSR are fulfilled. (authors)

  11. Fuzzy methodology applied to Probabilistic Safety Assessment for digital system in nuclear power plants

    International Nuclear Information System (INIS)

    Highlights: → A fuzzy inference system was used to treat a nuclear reliability problem. → Nuclear power plants have performed a shift in technology to digital systems. → The fuzzy inference engine determine a mapping of the input universe of discourse. → The digital feedwater control system was adopted as a practical example. - Abstract: A fuzzy inference system (FIS) modeling technique to treat a nuclear reliability engineering problem is presented. Recently, many nuclear power plants (NPPs) have performed a shift in technology to digital systems due to analog obsolescence and digital advantages. The fuzzy inference engine uses these fuzzy IF-THEN rules to determine a mapping of the input universe of discourse over the output universe of discourse based on fuzzy logic principles. The risk priority number (RPN) (typical of a traditional failure mode and effects analysis - FMEA) is calculated and compared to fuzzy risk priority number (FRPN), obtained by the use of the scores from expert opinions. It was adopted the digital feedwater control system as a practical example in the case study. The results demonstrated the potential of the inference system to this class of problem.

  12. Principle of Maximum Fisher Information from Hardy's Axioms Applied to Statistical Systems

    CERN Document Server

    Frieden, B R

    2014-01-01

    Consider a finite-sized, multidimensional system in parameter state a. The system is either at statistical equilibrium or general non-equilibrium, and may obey either classical or quantum physics. L. Hardy's mathematical axioms provide a basis for the physics obeyed by any such system. One axiom is that the number N of distinguishable states a in the system obeys N=max. This assumes that N is known as deterministic prior knowledge. However, most observed systems suffer statistical fluctuations, for which N is therefore only known approximately. Then what happens if the scope of the axiom N=max is extended to include such observed systems? It is found that the state a of the system must obey a principle of maximum Fisher information, I=I_{max}. This is important because many physical laws have been derived, assuming as a working hypothesis that I=I_{max}. These derivations include uses of the principle of Extreme physical information (EPI). Examples of such derivations were of the De Broglie wave hypothesis, q...

  13. The systems approach for applying artificial intelligence to space station automation (Invited Paper)

    Science.gov (United States)

    Grose, Vernon L.

    1985-12-01

    The progress of technology is marked by fragmentation -- dividing research and development into ever narrower fields of specialization. Ultimately, specialists know everything about nothing. And hope for integrating those slender slivers of specialty into a whole fades. Without an integrated, all-encompassing perspective, technology becomes applied in a lopsided and often inefficient manner. A decisionary model, developed and applied for NASA's Chief Engineer toward establishment of commercial space operations, can be adapted to the identification, evaluation, and selection of optimum application of artificial intelligence for space station automation -- restoring wholeness to a situation that is otherwise chaotic due to increasing subdivision of effort. Issues such as functional assignments for space station task, domain, and symptom modules can be resolved in a manner understood by all parties rather than just the person with assigned responsibility -- and ranked by overall significance to mission accomplishment. Ranking is based on the three basic parameters of cost, performance, and schedule. This approach has successfully integrated many diverse specialties in situations like worldwide terrorism control, coal mining safety, medical malpractice risk, grain elevator explosion prevention, offshore drilling hazards, and criminal justice resource allocation -- all of which would have otherwise been subject to "squeaky wheel" emphasis and support of decision-makers.

  14. Decomposition with Thermoeconomic Isolation Applied to the Optimal Synthesis/Design of an Advanced Tactical Aircraft System

    Directory of Open Access Journals (Sweden)

    Michael R. von Spakovsky

    2003-09-01

    Full Text Available A decomposition methodology based on the concept of “thermoeconomic isolation” and applied to the synthesis/design and operational optimization of an advanced tactical fighter aircraft is the focus of this paper. The most promising set of aircraft sub-system configurations, based on both an energy integration analysis and aerodynamic performance, were first developed and detailed thermodynamic, geometric, physical, and aerodynamic models at both design and off-design were formulated and implemented. Conceptual, time, and physical decomposition were then applied to the synthesis/design and operational optimization of the aircraft system. The physical decomposition strategy used, called Iterative Local-Global Optimization (ILGO, was developed by Muñoz and von Spakovsky (2001a,b and has been applied to a number of complex stationary and transportation applications. This decomposition strategy is the first to successfully closely approach the theoretical condition of “thermoeconomic isolation” when applied to highly complex, highly dynamic non-linear systems.

  15. Learner-oriented distance education supporting service system model and applied research

    Directory of Open Access Journals (Sweden)

    Chen Liyong

    2016-01-01

    Full Text Available Distance education is a product of social progress and an emerging way of life-long learning as well. This paper describes the construction of the distance education supporting service system and establishes the distance education supporting service system from the perspective of distance education learners. Under the premise of considering to provide six influencing factors--learning facilities, learning coaching and counseling, learning resources, education and teaching information, assessment of student learning situation and organization of practical teaching activities, this paper assesses the distance education supporting service system of Beijing, Shanghai and Shenzhen by using AHP.

  16. Apply of measure and control data management software in core neutron flux measurement system

    International Nuclear Information System (INIS)

    It describes the development of C2 project based on the OPC protocol core measurement system measurement and control data management software. The main achievement is a measure of the reactor core of the neutron flux distribution, monitoring core power distortion, and accumulated fuel consumption data and other functions, and place the abnormal response timely. The monitoring software running on the main cabinet computer achieves the integration of system monitoring, and the monitoring software running on the channel cabinet achieves system monitoring. The monitoring and control software plays an important role in ensuring the safety and economy of the nuclear power plants. (authors)

  17. Defense and intelligence technologies applied to law enforcement: remote consultation information system (RCIS)

    Science.gov (United States)

    Penninger, Robert B.

    1995-05-01

    The Remote Consultation Information System is a body-worn fully integrated communication system that provide secure two-way voice-quality audio, secure full-color video transmission, automatic position location (APL) via Global Positioning System, and vital life signs moitoring, all linked to an adaptable base station via spread-spectrum low-probability-of- intercept, Broadband Code Division Multiple Access radio link. All of these technologies have been developed by the defense and intelligence communities and are now availbale for law enforcement agencies.

  18. Research & Reform on Real-Time Operating System Applied to Robot

    Institute of Scientific and Technical Information of China (English)

    CHENYimin; CHENYangbin

    2004-01-01

    The paper describes some current popular real-time operation systems such as QNX, VxWorks, and analyses Linux present status and weak points for real-time supporting characteristics and related main trend technology of real-time support based on Linux kernel, and compares comprehensively strong and weak points among different kinds of solutions. By drawing out a typical realtime application model and combining some present research results and thoughts, this paper puts forward reform scheme of real-time operation system which is realized in Linux operation system, and some good results are given at last.

  19. Donor impurity states and related optical response in a lateral coupled dot-ring system under applied electric field

    Energy Technology Data Exchange (ETDEWEB)

    Correa, J.D. [Departamento de Ciencias Básicas, Universidad de Medellín, Medellín (Colombia); Mora-Ramos, M.E. [Centro de Investigación en Ciencias, Instituto de Ciencias Básicas y Aplicadas, Universidad Autonoma del Estado de Morelos, Av. Universidad 1001, CP 62209 Cuernavaca, Morelos (Mexico); Duque, C.A., E-mail: cduque@fisica.udea.edu.co [Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín (Colombia)

    2015-09-01

    A study on the effects of an externally applied electric field on the linear optical absorption and relative refractive index change associated with transitions between off-center donor impurity states in laterally coupled quantum dot-ring system is reported. Electron states are calculated within the effective mass and parabolic band approximations by means of an exact diagonalization procedure. The states and the optical response in each case show significant sensitivity to the geometrical distribution of confining energies as well as to the strength of the applied field.

  20. Donor impurity states and related optical response in a lateral coupled dot-ring system under applied electric field

    International Nuclear Information System (INIS)

    A study on the effects of an externally applied electric field on the linear optical absorption and relative refractive index change associated with transitions between off-center donor impurity states in laterally coupled quantum dot-ring system is reported. Electron states are calculated within the effective mass and parabolic band approximations by means of an exact diagonalization procedure. The states and the optical response in each case show significant sensitivity to the geometrical distribution of confining energies as well as to the strength of the applied field

  1. Qualitative Event-based Diagnosis with Possible Conflicts Applied to Spacecraft Power Distribution Systems

    Data.gov (United States)

    National Aeronautics and Space Administration — Model-based diagnosis enables efficient and safe operation of engineered systems. In this paper, we describe two algorithms based on a qualitative event-based fault...

  2. How to apply importance-sampling techniques to simulations of optical systems

    OpenAIRE

    McKinstrie, C. J.; Winzer, P. J.

    2003-01-01

    This report contains a tutorial introduction to the method of importance sampling. The use of this method is illustrated for simulations of the noise-induced energy jitter of return-to-zero pulses in optical communication systems.

  3. Basic and applied research related to the technology of space energy conversion systems, 1982 - 1983

    Science.gov (United States)

    Hertzberg, A.

    1983-01-01

    Topics on solar energy conversion concepts and applications are discussed. An overview of the current status and future utilization of radiation receivers for electrical energy generation, liquid droplet radiation systems, and liquid droplet heat exchangers is presented.

  4. A gamma-ray therapeutic system applied to treatment of body tumors

    Institute of Scientific and Technical Information of China (English)

    HUANG Yu; DUAN Zheng-Cheng; ZHU Guo-Li; GONG Shi-Hua; LI Xiao-Ping

    2004-01-01

    In order to treat malignant tumors in human body, a stereotactic gamma-ray whole-body therapeutic system has been developed. This system is a typical large mechatronics treatment machine. In this paper, its main working principles and characteristics are introduced. This system comprises a special gallows frame with an open vertical structure, a changeable collimator device by which the size of convergence center can be chosen, and a 3D treatment couch. A computer brings the couch to target position automatically. Therefore precise and dynamic rotary converging therapy for tumors located anywhere in the body has been realized. The system's performance has been proved in practice, which includes good curative effect, reliable automation, and safe and secure operation.

  5. Real-time transit tracking system to evolve and facilitate the transportation process at the Applied Science University

    OpenAIRE

    Mohammad Shkoukani; Fadi Ajjam, Hamza Ali; Hisham Salah

    2016-01-01

    Travel and transportation are important for most people and play a major role in the human life; therefore this paper describes a prototype system called eBus which is a tracking system for campus buses at the Applied Science University. This system consists of two parts an Android application that is used by both the driver and the student which provides the ability for the students to track the buses’ movements on a specific route and show their information on the map and it also enables th...

  6. Using LDR as Sensing Element for an External Fuzzy Controller Applied in Photovoltaic Pumping Systems with Variable-Speed Drives

    Directory of Open Access Journals (Sweden)

    Geraldo Neves De A. Maranhão

    2015-09-01

    Full Text Available In the present paper, a fuzzy controller applied to a Variable-Speed Drive (VSD for use in Photovoltaic Pumping Systems (PVPS is proposed. The fuzzy logic system (FLS used is embedded in a microcontroller and corresponds to a proportional-derivative controller. A Light-Dependent Resistor (LDR is used to measure, approximately, the irradiance incident on the PV array. Experimental tests are executed using an Arduino board. The experimental results show that the fuzzy controller is capable of operating the system continuously throughout the day and controlling the direct current (DC voltage level in the VSD with a good performance.

  7. Defending against the Unknown Enemy: Applying FlipIt to System Security

    OpenAIRE

    Bowers, Kevin D.; van Dijk, Marten; Griffin, Robert; Juels, Ari; Oprea, Alina; Rivest, Ronald L.; Triandopoulos, Nikos

    2012-01-01

    Most cryptographic systems carry the basic assumption that entities are able to preserve the secrecy of their keys. With attacks today showing ever increasing sophistication, however, this tenet is eroding. “Advanced Persistent Threats” (APTs), for instance, leverage zero-day exploits and extensive system knowledge to achieve full compromise of cryptographic keys and other secrets. Such compromise is often silent, with defenders failing to detect the loss of private keys critical to protectio...

  8. Earthworm Population Density in Sugarcane Cropping System Applied with Various Quality of Organic Matter

    OpenAIRE

    Nurhidayati Nurhidayati; Endang Arisoesilaningsih; Didik Suprayogo; Kurniatun Hairiah

    2012-01-01

    Earthworms population in the soil are greatly impacted by agricultural management, yet little is known about how the quality and quantity of organic matter addition interact in sugarcane cropping system to earthworm population. This study describes the effect of various organic matter and application rates on earthworms in sugarcane cropping system. Earthworms were collected in April, July and December from 48 experimental plots under five kinds of organic matter application : (1) cattle manu...

  9. Applying Systemic Project Management Approaches for the UK National Health Service

    OpenAIRE

    Bell, Simon; Christina, Ann

    2006-01-01

    This paper sets out some observations arising from on-going research into the use of systemic methods in the planning of complex projects within the National Health Service (NHS) in Staffordshire and Shropshire in the UK. This brief paper sets out the main reasons for the application of systemic approaches, the nature of the methodologies put in place and some of the outcomes and reflections of those involved in the various workshops. Whilst not attempting to be definitive in our conclusions,...

  10. User-centred system design approach applied on a robotic flexible endoscope

    OpenAIRE

    Ruiter, J.G.; Voort, van der, R.; Bonnema, G.M.

    2013-01-01

    Complex systems, like surgical robots, are designed by engineers. It is very difficult for them to determine the different needs and desires of all stakeholders. Especially when designed from scratch, end user input is essential in creating a system that has added value, is user friendly, and can be easily integrated into practice. For the development of a robotic flexible endoscope we have involved physicians, nurses, and equipment suppliers in our design approach. Seven steps are executed t...

  11. Applying Agile Requirements Engineering Approach for Re-engineering & Changes in existing Brownfield Adaptive Systems

    OpenAIRE

    Masood, Abdullah; Ali, M. Asim

    2014-01-01

    Requirements Engineering (RE) is a key activity in the development of software systems and is concerned with the identification of the goals of stakeholders and their elaboration into precise statements of desired services and behavior. The research describes an Agile Requirements Engineering approach for re-engineering & changes in existing Brownfield adaptive system. The approach has few modifications that can be used as a part of SCRUM development process for re-engineering & changes. The ...

  12. A Nonlinear Multiparameters Temperature Error Modeling and Compensation of POS Applied in Airborne Remote Sensing System

    OpenAIRE

    Jianli Li; Wenjian Wang; Feng Jiao; Jiancheng Fang; Tao Yu

    2014-01-01

    The position and orientation system (POS) is a key equipment for airborne remote sensing systems, which provides high-precision position, velocity, and attitude information for various imaging payloads. Temperature error is the main source that affects the precision of POS. Traditional temperature error model is single temperature parameter linear function, which is not sufficient for the higher accuracy requirement of POS. The traditional compensation method based on neural network faces gre...

  13. Design and implementation of a monitoring system applied to a long-span prestressed concrete bridge

    OpenAIRE

    H. Sousa; Figueiras, J; Félix, C; Bento, J.

    2011-01-01

    Currently, long-term monitoring systems are mandatory for major civil engineering structures such as bridges, tunnels and dams. Generally, they monitor a set of physical, chemical and mechanical parameters in critical sections of the structure by incorporating appropriate sensors. The set of data collected demonstrates great potential in the prevention of damage and contributes to more efficient maintenance of the structures monitored. This work presents the long-term monitoring system instal...

  14. DiCoT: A methodology for applying Distributed Cognition to the design of teamworking systems

    OpenAIRE

    Blandford, A.; Furniss, D.

    2006-01-01

    Distributed Cognition is growing in popularity as a way of reasoning about group working and the design of artefacts within work systems. DiCoT (Distributed Cognition for Teamwork) is a methodology and representational system we are developing to support distributed cognition analysis of small team working. It draws on ideas from Contextual Design, but re-orients them towards the principles that are central to Distributed Cognition. When used to reason about possible changes to the design of ...

  15. Position paper: an agent-oriented architecture for building automation systems applied to assistive technologies

    OpenAIRE

    Järvinen, Hannu; Garcia Gasulla, Dario

    2012-01-01

    Building Automation Systems typically consists of di erent types of devices interacting and sharing information with each other. Similarly, Multi-Agent Systems has focused on flexible mechanisms to coordinate networks of (usually distributed) autonomous computational entities. The integration of these two fields provides powerful solutions to complex problems. Such integration has often been attempted by using Web technologies, such as Web services. However, the lack of a common standa...

  16. Applying a competencies system at the master programs according to professional associations

    OpenAIRE

    S. Ciprian; A. BUGLEA

    2011-01-01

    The purpose of this paper is to create the premises for a system of competencies in Romania coherent with the European regulations at master level in the area of economic analysis and valuation of businesses, real estates and financial assets, according to the requirements of professional associations. The master programs organized by universities should be based on a system of competencies adapted to the requirements of business environment and professional associations, considering the Roma...

  17. The destabilization paradox applied to friction-induced vibrations in an aircraft braking system

    OpenAIRE

    Chevillot, Fabrice; Sinou, Jean-Jacques; Mazet, Guy-Bernard; Hardouin, Nicolas; Jezequel, Louis

    2008-01-01

    International audience Mechanisms of friction are known as an important source of vibrations in a large variety of engineering systems, where the emergence of oscillations is noisy and can cause severe damage to the system. The reduction or elimination of these vibrations is then an industrial issue that requires the attention of engineers and researchers together. Friction-induced vibrations have been the matter of several investigations, considering experimental, analytical, and numerica...

  18. PROPOSAL FOR A WEB SYSTEM APPLIED TO THE ENVIRONMENTAL RISKS PREVENTION PROGRAM

    Directory of Open Access Journals (Sweden)

    CAMILA BORGATO

    2010-09-01

    Full Text Available Environmental conditions of human labor expose workers to significant risk of accident. Therefore, companies are required to follow regulatory standards designed to ensure the quality of life and health in the workplace. However, the control and training needed to prevent accidents in the work environment is extremely complex. For this reason, it is necessary to find ways to improve management of risks encountered in real working environments. Many areas of knowledge are betting on technological advances of the internet because this technology enables process information in a flexible and allows a broad global reach through networks interconnected by computers. The objective of this work was to develop a web system that can help manage the prevention of the risks found in work environments of companies. For this, it proposed a system with simple interface, allowing an easy interpretation and use. It performed the modeling system, which enabled to verify the data to be explored. It used the method of analysis to highlight key events and objects of the system. And yet, the screens were generated from the system, based on the events detailed in the essential analysis. The result of this work has produced a detailed model for the development of the system.

  19. Applying reliability concepts and data analysis to IGSCC crack initiation in BWR systems

    International Nuclear Information System (INIS)

    Predicting the life and reliability of boiling water nuclear reactor (BWR) structural components subject to stress corrosion cracking requires high quality data and data analysis for both crack initiation and crack propagation. Laboratory study and prediction of crack propagation rates is more advanced relative to crack initiation studies. This is partially attributed to the probabilistic nature of crack initiation experimentation which requires many test specimens to be statically valid. This paper briefly reviews concepts used in applying reliability methods and data analysis in developing quality data and then applying these concepts to IGSCC crack initiation data. Since the distribution of time to crack initiation tends to be highly skewed, these time to failure data are not well represented by measures of central tendency such as the mean time to failure. Data from creviced and sensitized 304SS are better described by either a lognormal or Weibull distribution. For the Weibull distribution, the shape parameter (β) was found to depend on the applied stress. For sensitized 304 SS under BWR conditions, no tendencies towards infant mortality (β estimated to be 1.6) were observed at a stress of 176 MPa in contrast to specimens under a stress of 292 MPa where β was estimated to be 0.5, indicating that initial defects are influencing the test population. With these data, crack initiation life test planning can be better determined to assess the life of critical components by determining sample sizes and test conditions that produce meaningful results with optimal resources. Population distribution simulations based on parameters obtained from available crack initiation data were used to show that when the difference in the crack initiation distributions is a factor of 1, over 25 specimens are required per test condition to show a statistical difference with 95% confidence. The number of specimens required decreases as the difference in the percentiles of the

  20. Adaptive MIMO Fuzzy Compensate Fuzzy Sliding Mode Algorithm: Applied to Second Order Nonlinear System

    Directory of Open Access Journals (Sweden)

    Farzin Piltan, N. Sulaiman, Payman Ferdosali, Mehdi Rashidi, Zahra Tajpeikar

    2011-12-01

    Full Text Available This research is focused on proposed adaptive fuzzy sliding mode algorithms with the adaptation lawsderived in the Lyapunov sense. The stability of the closed-loop system is proved mathematically based onthe Lyapunov method. Adaptive MIMO fuzzy compensate fuzzy sliding mode method design a MIMO fuzzysystem to compensate for the model uncertainties of the system, and chattering also solved by linearsaturation method. Since there is no tuning method to adjust the premise part of fuzzy rules so wepresented a scheme to online tune consequence part of fuzzy rules. Classical sliding mode control isrobust to control model uncertainties and external disturbances. A sliding mode method with a switchingcontrol low guarantees the stability of the certain and/or uncertain system, but the addition of the switchingcontrol low introduces chattering into the system. One way to reduce or eliminate chattering is to insert aboundary layer method inside of a boundary layer around the sliding surface. Classical sliding modecontrol method has difficulty in handling unstructured model uncertainties. One can overcome this problemby combining a sliding mode controller and artificial intelligence (e.g. fuzzy logic. To approximate a timevaryingnonlinear dynamic system, a fuzzy system requires a large amount of fuzzy rule base. This largenumber of fuzzy rules will cause a high computation load. The addition of an adaptive law to a fuzzy slidingmode controller to online tune the parameters of the fuzzy rules in use will ensure a moderatecomputational load. The adaptive laws in this algorithm are designed based on the Lyapunov stabilitytheorem. Asymptotic stability of the closed loop system is also proved in the sense of Lyapunov.

  1. System design and optimization study of axial flow turbine applied in an overtopping wave energy convertor

    Indian Academy of Sciences (India)

    Yuquan Zhang; Yuan Zheng; Chunxia Yang; Yantao Zhu; Xin Zhang

    2015-12-01

    The axial flow turbine applied in an overtopping wave energy convertor can continuously provide power with high efficiency and reliably. To study the rules between parameters of the turbine and flows, three different types of turbines with complete 3D flow-channel models were designed and optimized. It appears that diameter of the runner, flow rates, number of guide vanes and shape of outflow passage have a considerable impact on the performance of the whole convertor. The turbine with a diameter of 0.8 m, flow rate of 0.5 m3/s, double guide vanes and bent section in outflow passage shows the best comprehensive performance. Moreover, the results of the experiments indicate that the output power can be enhanced by increasing the wave overtopping rate.

  2. Azcaxalli: A system based on Ant Colony Optimization algorithms, applied to fuel reloads design in a Boiling Water Reactor

    International Nuclear Information System (INIS)

    This paper presents some results of the implementation of several optimization algorithms based on ant colonies, applied to the fuel reload design in a Boiling Water Reactor. The system called Azcaxalli is constructed with the following algorithms: Ant Colony System, Ant System, Best-Worst Ant System and MAX-MIN Ant System. Azcaxalli starts with a random fuel reload. Ants move into reactor core channels according to the State Transition Rule in order to select two fuel assemblies into a 1/8 part of the reactor core and change positions between them. This rule takes into account pheromone trails and acquired knowledge. Acquired knowledge is obtained from load cycle values of fuel assemblies. Azcaxalli claim is to work in order to maximize the cycle length taking into account several safety parameters. Azcaxalli's objective function involves thermal limits at the end of the cycle, cold shutdown margin at the beginning of the cycle and the neutron effective multiplication factor for a given cycle exposure. Those parameters are calculated by CM-PRESTO code. Through the Haling Principle is possible to calculate the end of the cycle. This system was applied to an equilibrium cycle of 18 months of Laguna Verde Nuclear Power Plant in Mexico. The results show that the system obtains fuel reloads with higher cycle lengths than the original fuel reload. Azcaxalli results are compared with genetic algorithms, tabu search and neural networks results.

  3. Azcaxalli: A system based on Ant Colony Optimization algorithms, applied to fuel reloads design in a Boiling Water Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Esquivel-Estrada, Jaime, E-mail: jaime.esquivel@fi.uaemex.m [Facultad de Ingenieria, Universidad Autonoma del Estado de Mexico, Cerro de Coatepec S/N, Toluca de Lerdo, Estado de Mexico 50000 (Mexico); Instituto Nacional de Investigaciones Nucleares, Carr. Mexico Toluca S/N, Ocoyoacac, Estado de Mexico 52750 (Mexico); Ortiz-Servin, Juan Jose, E-mail: juanjose.ortiz@inin.gob.m [Instituto Nacional de Investigaciones Nucleares, Carr. Mexico Toluca S/N, Ocoyoacac, Estado de Mexico 52750 (Mexico); Castillo, Jose Alejandro; Perusquia, Raul [Instituto Nacional de Investigaciones Nucleares, Carr. Mexico Toluca S/N, Ocoyoacac, Estado de Mexico 52750 (Mexico)

    2011-01-15

    This paper presents some results of the implementation of several optimization algorithms based on ant colonies, applied to the fuel reload design in a Boiling Water Reactor. The system called Azcaxalli is constructed with the following algorithms: Ant Colony System, Ant System, Best-Worst Ant System and MAX-MIN Ant System. Azcaxalli starts with a random fuel reload. Ants move into reactor core channels according to the State Transition Rule in order to select two fuel assemblies into a 1/8 part of the reactor core and change positions between them. This rule takes into account pheromone trails and acquired knowledge. Acquired knowledge is obtained from load cycle values of fuel assemblies. Azcaxalli claim is to work in order to maximize the cycle length taking into account several safety parameters. Azcaxalli's objective function involves thermal limits at the end of the cycle, cold shutdown margin at the beginning of the cycle and the neutron effective multiplication factor for a given cycle exposure. Those parameters are calculated by CM-PRESTO code. Through the Haling Principle is possible to calculate the end of the cycle. This system was applied to an equilibrium cycle of 18 months of Laguna Verde Nuclear Power Plant in Mexico. The results show that the system obtains fuel reloads with higher cycle lengths than the original fuel reload. Azcaxalli results are compared with genetic algorithms, tabu search and neural networks results.

  4. A Modular Neural Network Scheme Applied to Fault Diagnosis in Electric Power Systems

    Directory of Open Access Journals (Sweden)

    Agustín Flores

    2014-01-01

    Full Text Available This work proposes a new method for fault diagnosis in electric power systems based on neural modules. With this method the diagnosis is performed by assigning a neural module for each type of component comprising the electric power system, whether it is a transmission line, bus or transformer. The neural modules for buses and transformers comprise two diagnostic levels which take into consideration the logic states of switches and relays, both internal and back-up, with the exception of the neural module for transmission lines which also has a third diagnostic level which takes into account the oscillograms of fault voltages and currents as well as the frequency spectrums of these oscillograms, in order to verify if the transmission line had in fact been subjected to a fault. One important advantage of the diagnostic system proposed is that its implementation does not require the use of a network configurator for the system; it does not depend on the size of the power network nor does it require retraining of the neural modules if the power network increases in size, making its application possible to only one component, a specific area, or the whole context of the power system.

  5. 制药工厂OEE系统的应用%OEE System Applied in Pharmaceutical Factory

    Institute of Scientific and Technical Information of China (English)

    陈有亮

    2012-01-01

    OEE system has been implemented in pharmaceutical factory for the requirement of plant management level oriented to shop floor management and automation application development. Taking advantage of some current automating, software programming and system integrating technologies and partly working out reasonable problem solving solutions, this paper accumulates the experience for totally implementing MES system later. Furthermore, it complies with the CSV compliances.%针对制药工厂自动化应用的发展,以及工厂管理层对车间管理的进一步要求,提出了车间管理的一些典型问题并采用了 OEE(Overall Equipment Effectiveness,全面设备效率)系统.利用当今的一些自动化应用技术、软件编程技术以及系统集成技术,部分给出了较合理的问题解决手段,为后续全面实施MES (Manufacturing Execution System,制造执行系统)积累了经验.同时还满足了有关CSV (Computer System Validation,计算机系统验证)的规范.

  6. Development of an intelligent system for tool wear monitoring applying neural networks

    Directory of Open Access Journals (Sweden)

    A. Antić

    2005-12-01

    Full Text Available Purpose: The objective of the researches presented in the paper is to investigate, in laboratory conditions, the application possibilities of the proposed system for tool wear monitoring in hard turning, using modern tools and artificial intelligence (AI methods.Design/methodology/approach: On the basic theoretical principles and the use of computing methods of simulation and neural network training, as well as the conducted experiments, have been directed to investigate the adequacy of the setting.Findings: The paper presents tool wear monitoring for hard turning for certain types of neural network configurations where there are preconditions for up building with dynamic neural networks.Research limitations/implications: Future researches should include the integration of the proposed system into CNC machine, instead of the current separate system, which would provide synchronisation between the system and the machine, i.e. the appropriate reaction by the machine after determining excessive tool wear.Practical implications: Practical application of the conducted research is possible with certain restrictions and supplement of adequate number of experimental researches which would be directed towards certain combinations of machining materials and tools for which neural networks are trained.Originality/value: The contribution of the conducted research is observed in one possible view of the tool monitoring system model and it’s designing on modular principle, and principle building neural network.

  7. Shape memory alloys applied to improve rotor-bearing system dynamics - an experimental investigation

    DEFF Research Database (Denmark)

    Enemark, Søren; Santos, Ilmar; Savi, Marcelo A.

    2015-01-01

    hysteretic stress-strain relations which may be utilized for damping purposes. These ideas are tested in this study on a dedicated test-rig, consisting of a rigid shaft and disc held vertically by passive magnetic bearings, where the damping is low. The bearing housings is flexibly supported by shape memory...... alloy helical springs, and because of high dynamic coupling between shaft and bearing housing, the shape memory alloy springs are able to reduce vibration in the shaft. The shape memory alloy springs are characterized by force-displacement tests in different temperatures. Transients of step...... perturbations and mass imbalance responses of the rotor-bearing system at different temperatures and excitation frequencies are carried out to determine the dynamic behaviour of the system. The behaviour and the performance in terms of vibration reduction and system adaptability are compared against a benchmark...

  8. Range-separated double-hybrid density-functional theory applied to periodic systems

    International Nuclear Information System (INIS)

    Quantum chemistry methods exploiting density-functional approximations for short-range electron-electron interactions and second-order Møller-Plesset (MP2) perturbation theory for long-range electron-electron interactions have been implemented for periodic systems using Gaussian-type basis functions and the local correlation framework. The performance of these range-separated double hybrids has been benchmarked on a significant set of systems including rare-gas, molecular, ionic, and covalent crystals. The use of spin-component-scaled MP2 for the long-range part has been tested as well. The results show that the value of μ = 0.5 bohr−1 for the range-separation parameter usually used for molecular systems is also a reasonable choice for solids. Overall, these range-separated double hybrids provide a good accuracy for binding energies using basis sets of moderate sizes such as cc-pVDZ and aug-cc-pVDZ

  9. A Domain-Specific Language for Multitask Systems, Applying Discrete Controller Synthesis

    Directory of Open Access Journals (Sweden)

    Rutten Éric

    2007-01-01

    Full Text Available We propose a simple programming language, called Nemo, specific to the domain of multitask real-time control systems, such as in robotic, automotive, or avionics systems. It can be used to specify a set of resources with usage constraints, a set of tasks that consume them according to various modes, and applications sequencing the tasks. We automatically obtain an application-specific task handler that correctly manages the constraints (if there exists one, through a compilation-like process including a phase of discrete controller synthesis. This way, this formal technique contributes to the safety of the designed systems, while being encapsulated in a tool that makes it usable by application experts. Our approach is based on the synchronous modelling techniques, languages, and tools.

  10. A Domain-Specific Language for Multitask Systems, Applying Discrete Controller Synthesis

    Directory of Open Access Journals (Sweden)

    Éric Rutten

    2007-03-01

    Full Text Available We propose a simple programming language, called Nemo, specific to the domain of multitask real-time control systems, such as in robotic, automotive, or avionics systems. It can be used to specify a set of resources with usage constraints, a set of tasks that consume them according to various modes, and applications sequencing the tasks. We automatically obtain an application-specific task handler that correctly manages the constraints (if there exists one, through a compilation-like process including a phase of discrete controller synthesis. This way, this formal technique contributes to the safety of the designed systems, while being encapsulated in a tool that makes it usable by application experts. Our approach is based on the synchronous modelling techniques, languages, and tools.

  11. Hardware-software system for simulating and analyzing earthquakes applied to civil structures

    Directory of Open Access Journals (Sweden)

    J. P. Amezquita-Sanchez

    2012-01-01

    Full Text Available The occurrence of recent strong earthquakes, the incessant worldwide movements of tectonic plates and the continuous ambient vibrations caused by traffic and wind have increased the interest of researchers in improving the capacity of energy dissipation to avoid damages to civil structures. Experimental testing of structural systems is essential for the understanding of physical behaviors and the building of appropriate analytic models in order to expose difficulties that may not have been considered in analytical studies. This paper presents a hardware-software system for exciting, monitoring and analyzing simultaneously a structure under earthquake signals and other types of signals in real-time. Effectiveness of the proposed system has been validated by experimental case studies and has been found to be a useful tool in the analysis of earthquake effects on structures.

  12. Sensitivity analysis by neural networks applied to power systems transient stability

    Energy Technology Data Exchange (ETDEWEB)

    Lotufo, Anna Diva P.; Lopes, Mara Lucia M.; Minussi, Carlos R. [Departamento de Engenharia Eletrica, UNESP, Campus de Ilha Solteira, Av. Brasil, 56, 15385-000 Ilha Solteira, SP (Brazil)

    2007-05-15

    This work presents a procedure for transient stability analysis and preventive control of electric power systems, which is formulated by a multilayer feedforward neural network. The neural network training is realized by using the back-propagation algorithm with fuzzy controller and adaptation of the inclination and translation parameters of the nonlinear function. These procedures provide a faster convergence and more precise results, if compared to the traditional back-propagation algorithm. The adaptation of the training rate is effectuated by using the information of the global error and global error variation. After finishing the training, the neural network is capable of estimating the security margin and the sensitivity analysis. Considering this information, it is possible to develop a method for the realization of the security correction (preventive control) for levels considered appropriate to the system, based on generation reallocation and load shedding. An application for a multimachine power system is presented to illustrate the proposed methodology. (author)

  13. Visualization of airflows in push-pull ventilation systems applied to surface treatment tanks.

    Science.gov (United States)

    Marzal, F; González, E; Miñana, A; Baeza, A

    2003-01-01

    A pilot installation was designed that simulates a surface treatment tank fitted with a push-pull ventilation system. The installation contained elements for measuring and controlling the operational variables (flow rate and tank temperature) and smoke generating equipment for injecting smoke through the holes of the push unit and from the tank surface. Visual observation and video recording of the flows involved meant it was possible to follow the qualitative behavior of the push flow rate along the tank surface and to identify any emissions not captured by the exhaust system. It was possible to differentiate the initial semifree push curtain, its impact with the tank surface, the wall jet that moved toward the exhaust, and its entrance into the exhaust. The methodology proposed is complemented by a quantitative technique for measuring the efficiency, using sulfur hexafluoride as tracer, which permits the causes and location of losses in the ventilation system to be determined. PMID:12908859

  14. Reliability worth applied to transmission expansion planning based on ant colony system

    Energy Technology Data Exchange (ETDEWEB)

    Leite da Silva, Armando M.; Rezende, Leandro S. [Institute of Electric Systems and Energy, Federal University of Itajuba, UNIFEI (Brazil); da Fonseca Manso, Luiz A.; de Resende, Leonidas C. [Department of Electrical Engineering, Federal University of Sao Joao del Rei, UFSJ (Brazil)

    2010-12-15

    This paper proposes a new methodology to solve transmission expansion planning (TEP) problems in power system, based on the metaheuristic ant colony optimisation (ACO). The TEP problem includes the search for the least cost solution, bearing in mind investment cost and reliability worth. Reliability worth is considered through the assessment of the interruption costs represented by the index LOLC - loss of load cost. The focus of this work is the development of a tool for the multi-stage planning of transmission systems and how reliability aspects can influence on the decision-making process. The applications of the proposed methodology are illustrated through case studies carried out using a test system and a real sub-transmission network. (author)

  15. Validation of neutronic methods applied to the analysis of fast subcritical systems. The MUSE-2 experiments

    International Nuclear Information System (INIS)

    In the framework of the French SPIN program devoted to the separation and the transmutation of radioactive wastes, the CEA has launched the ISAAC program to investigate the potential of accelerator-driven systems and to provide an experimental validation of the physics characteristics of these systems. The neutronics of the subcritical core needs experimental validation. This can be done by decoupling the problem of the neutron source from the problem of the subcritical medium. Experiments with a well known external source placed in a subcritical medium have been performed in the MASURCA facility. The results confirm the high accuracy achievable with such experiments and the good quality of the ERANOS code system predictions. (author)

  16. Arms applied to the communications system at the Kourou space centre

    International Nuclear Information System (INIS)

    The REMUS (Roseau d'Entreprise MUltiService) has been designed to cover present and future communications needs which are associated with daily operation of the Guyanese Space Centre (GSC). This communications network will facilitate data exchange, contain the data (RSD) and voice network, and paging (RRP), convoy (RCV) and telephony (RSV) systems. The main objectives of the study were: 1. To assess system availability. 2. To dimension spare parts of the renewal equipment and define the logistic delays to be observed in order to achieve an availability target of: - 99.9% for the RRP, RCV and RSV networks. - 99.9% for the RSD network. The RAMSES program developed by Empresarios Agrupados was used in these calculations, to evaluate system behaviour by means of a Monte Carlo simulation. (author)

  17. System and antenna design considerations for highly elliptical orbits as applied to the proposed Archimedes Constellation

    Science.gov (United States)

    Paynter, C.; Cuchanski, M.

    1995-01-01

    The paper discusses various aspects of the system design for a satellite in a highly elliptical inclined orbit, and presents a number of antenna design options for the proposed Archimedes mission. A satellite constellation was studied for the provision of multi media communication services in the L and S Band for northern latitudes. The inclined elliptical orbit would allow coverage of Europe, America, and East Asia. Using Canada and North America as the baseline coverage area, this paper addresses system considerations such as the satellite configuration and pointing, beam configuration, and requirements for antennas. A trade-off is performed among several antenna candidates including a direct radiating array, a focal-fed reflector, and a single reflector imaging system. Antenna geometry, performance, and beam forming methods are described. The impact of the designs on the antenna deployment is discussed.

  18. Control System of Substance and Energy Balances of Combined Heat-and-Power Plants Applying the Least Squares Adjustment Method

    Directory of Open Access Journals (Sweden)

    Henryk Rusinowsk

    1999-12-01

    Full Text Available The set of substance and energy balance equations of water and steam collectors, together with the balance of boilers and turbines (including the regeneration system is the base of the control system of the exploitation of a combined heat-and power plant. The initial values of this system are the results of measurements in the course of exploitation. Due to inevitable errors in the measurements the substance balances display discrepancies between the balance of steam and the balance of the feed water, and the calculated technical indices are uncertain. In order to increase the reliability of the results of the technical analysis of exploitation and to co-ordinate the balance equations we may use the least squares adjustment method. It may be applied on the condition that we have a sufficient surplus of measuring data. The number of balance equations must be higher than the number of unknown values. This makes it possible to apply the criterion of least squares warranting a maximum of the reliability function in an n dimensional. space of errors (n - number of measuring data. This method has been applied in the balance systems of the combined heat-and-power generating plant.

  19. A study on issues and solutions about logic functions applied to computerized procedure system in APR1400

    International Nuclear Information System (INIS)

    Plant procedures are instructions to guide operators in monitoring, decision making, and controlling nuclear power plants(NPPs). While plant procedures historically have been paper-based, computerized-based procedures are being developed to overcome the drawbacks of paper-based procedures. The CPS is used to integrate the operational instructions, plan process information and computerized operator support functions in advanced main control room (MCR) of APR1400. The logic functions applied to CPS are three categories: Procedure Entry Condition (PEC), Continuously Applied Step (CAS) re-execution condition, instruction evaluation. This automation using logic function can reduce operator 2019's burden about monitoring, decision making, controlling NPPs but this automation can also lower situation awareness and operator in the loop. These automation issues caused by logic function shall be closed to apply computerized procedure. This paper introduces issues drawn by system designer, plant operators, and human factors engineers. To close these introduced issues, this paper suggests solutions from system design, procedure writer's guideline, and operator training. This paper introduces issues drawn by system designer, plant operators, and human factors engineers. To close these introduced issues, this paper suggests solutions from system design, procedure writer's guideline, and operator training

  20. Neuro-fuzzy models for systems identification applied to the operation of nuclear power plants

    International Nuclear Information System (INIS)

    A nuclear power plant has a myriad of complex system and sub-systems that, working cooperatively, make the control of the whole plant. Nevertheless their operation be automatic most of the time, the integral understanding of their internal- logic can be away of the comprehension of even experienced operators because of the poor interpretability those controls offer. This difficulty does not happens only in nuclear power plants but in almost every a little more complex control system. Neuro-fuzzy models have been used for the last years in a attempt of suppress these difficulties because of their ability of modelling in linguist form even a system which behavior is extremely complex. This is a very intuitive human form of interpretation and neuro-fuzzy model are gathering increasing acceptance. Unfortunately, neuro-fuzzy models can grow up to become of hard interpretation because of the complexity of the systems under modelling. In general, that growing occurs in function of redundant rules or rules that cover a very little domain of the problem. This work presents an identification method for neuro-fuzzy models that not only allows models grow in function of the existent complexity but that beforehand they try to self-adapt to avoid the inclusion of new rules. This form of construction allowed to arrive to highly interpretative neuro-fuzzy models even of very complex systems. The use of this kind of technique in modelling the control of the pressurizer of a PWR nuclear power plant allowed verify its validity and how neuro-fuzzy models so built can be useful in understanding the automatic operation of a nuclear power plant. (author)

  1. Coordinate system applied to magnetic suspension project between Shanghai and Hangzhou

    Institute of Scientific and Technical Information of China (English)

    Yimin SHI; Lihua WANG; Yan LUO

    2008-01-01

    In order to satisfy the requirement for route location of a magnetic suspension project between Shanghai and Hangzhou, this paper proposes to adopt a new form of geodetic coordinate system, which is defined by meridians and parallel circles but with two coordinate parameters expressed by length. Not only the coordinate systems for route location along the whole line can be unified, but also the precision of lengths and angles obtained from simple formulas are very high and there are not any map projection distortions. This has been proven by calculation.

  2. Applied research of embedded WiFi technology in the motion capture system

    Science.gov (United States)

    Gui, Haixia

    2012-04-01

    Embedded wireless WiFi technology is one of the current wireless hot spots in network applications. This paper firstly introduces the definition and characteristics of WiFi. With the advantages of WiFi such as using no wiring, simple operation and stable transmission, this paper then gives a system design for the application of embedded wireless WiFi technology in the motion capture system. Also, it verifies the effectiveness of design in the WiFi-based wireless sensor hardware and software program.

  3. Maintenance centered on reliability applied to a NPP auxiliary feedwater system

    International Nuclear Information System (INIS)

    The main objective of maintenance in a NPP is to assure that structures, systems and components will perform their design functions with reliability and/or availability in order to allow a safe and economic electric power generation. Reliability-Centered Maintenance (RCM) is a method of systematic review to either develop or optimize Preventive Maintenance Programs. This paper presents the objectives, concepts, organization and methods used in the application of RCM to NPP. Some application examples are include in this paper, considering some components of the Auxiliary Feedwater System of a generic Westinghouse designed two-loop PWR NPP. (author). 4 refs., 3 figs

  4. A reliability centered maintenance model applied to the auxiliary feedwater system of a nuclear power plant

    International Nuclear Information System (INIS)

    The main objective of maintenance in a nuclear power plant is to assure that structures, systems and components will perform their design functions with reliability and availability in order to obtain a safety and economic electric power generation. Reliability Centered Maintenance (RCM) is a method of systematic review to develop or optimize Preventive Maintenance Programs. This study presents the objectives, concepts, organization and methods used in the development of RCM application to nuclear power plants. Some examples of this application are included, considering the Auxiliary Feedwater System of a generic two loops PWR nuclear power plant of Westinghouse design. (author)

  5. ZOCT and chaotic oscillator applied to fault section determination in distribution system

    Science.gov (United States)

    Shang, Qiufeng; Zhou, Wenchang

    2006-11-01

    It's a new idea for using zero-sequence optical current transducer (ZOCT) to solve the measure problem of single-phase-to-ground fault section determination in distribution system. However the outputs of ZOCT are weak and mixed with noises, decreasing the detection sensitivity. Chaotic oscillator system is sensitive to certain signal and immune to noise, so the signal detection based on Duffing oscillator can improve the detection sensitivity and anti-interference capability. In this paper, combining Duffing oscillator with ZOCT, a new scheme of fault section determination is presented, with good sensitivity and reliability. The results of simulation and experiments proved this method is effective and feasible.

  6. System for calibration of instruments of x-ray measurement (CIR-X) applying the PGCS

    International Nuclear Information System (INIS)

    The Department of Metrology of Ionizing Radiations of the ININ carries out calibration of instruments for X-ray measurement that determine the operation parameters in X-ray diagnostic machines of the health and private sectors. To facilitate this task, the Department of Automation and Instrumentation developed a system for acquisition and signals processing coming from a reference voltage divider with traceability at NIST that is connected directly to the X-rays tube. The system is integrated by the X-ray unit, the X-ray measurement equipment Dynalizer IIIU of RADCAL, a data acquisition card, a personal computer and the acquisition software and signals processing. (Author)

  7. Formal methods applied to industrial complex systems implementation of the B method

    CERN Document Server

    Boulanger, Jean-Louis

    2014-01-01

    This book presents real-world examples of formal techniques in an industrial context. It covers formal methods such as SCADE and/or the B Method, in various fields such as railways, aeronautics, and the automotive industry. The purpose of this book is to present a summary of experience on the use of "formal methods" (based on formal techniques such as proof, abstract interpretation and model-checking) in industrial examples of complex systems, based on the experience of people currently involved in the creation and assessment of safety critical system software. The involvement of people from

  8. A Distributed Multiagent System Architecture for Body Area Networks Applied to Healthcare Monitoring

    Directory of Open Access Journals (Sweden)

    Filipe Felisberto

    2015-01-01

    Full Text Available In the last years the area of health monitoring has grown significantly, attracting the attention of both academia and commercial sectors. At the same time, the availability of new biomedical sensors and suitable network protocols has led to the appearance of a new generation of wireless sensor networks, the so-called wireless body area networks. Nowadays, these networks are routinely used for continuous monitoring of vital parameters, movement, and the surrounding environment of people, but the large volume of data generated in different locations represents a major obstacle for the appropriate design, development, and deployment of more elaborated intelligent systems. In this context, we present an open and distributed architecture based on a multiagent system for recognizing human movements, identifying human postures, and detecting harmful activities. The proposed system evolved from a single node for fall detection to a multisensor hardware solution capable of identifying unhampered falls and analyzing the users’ movement. The experiments carried out contemplate two different scenarios and demonstrate the accuracy of our proposal as a real distributed movement monitoring and accident detection system. Moreover, we also characterize its performance, enabling future analyses and comparisons with similar approaches.

  9. Development of a diagnostic expert system for eddy current data analysis using applied artificial intelligence methods

    Energy Technology Data Exchange (ETDEWEB)

    Upadhyaya, B.R.; Yan, W. [Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering; Behravesh, M.M. [Electric Power Research Institute, Palo Alto, CA (United States); Henry, G. [EPRI NDE Center, Charlotte, NC (United States)

    1999-09-01

    A diagnostic expert system that integrates database management methods, artificial neural networks, and decision-making using fuzzy logic has been developed for the automation of steam generator eddy current test (ECT) data analysis. The new system, known as EDDYAI, considers the following key issues: (1) digital eddy current test data calibration, compression, and representation; (2) development of robust neural networks with low probability of misclassification for flaw depth estimation; (3) flaw detection using fuzzy logic; (4) development of an expert system for database management, compilation of a trained neural network library, and a decision module; and (5) evaluation of the integrated approach using eddy current data. The implementation to field test data includes the selection of proper feature vectors for ECT data analysis, development of a methodology for large eddy current database management, artificial neural networks for flaw depth estimation, and a fuzzy logic decision algorithm for flaw detection. A large eddy current inspection database from the Electric Power Research Institute NDE Center is being utilized in this research towards the development of an expert system for steam generator tube diagnosis. The integration of ECT data pre-processing as part of the data management, fuzzy logic flaw detection technique, and tube defect parameter estimation using artificial neural networks are the fundamental contributions of this research. (orig.)

  10. The household responsibility system and social change in rural Guizhou, China: applying a cohort approach

    NARCIS (Netherlands)

    Yuan, J.

    2010-01-01

    Since the introduction of the Household Responsibility System (HRS) in 1978, Chinese rural households have experienced many changes. The HRS allows farming households to organize their own agricultural production on contracted lands, enabling them to work more efficiently and get more benefits compa

  11. FZKA, Department of Applied Systems Analysis. R + D activities in 1994

    International Nuclear Information System (INIS)

    The Department worked in the fields of technology assessment, marterials flow analysis, and socioeconomic environmental research. The characteristic feature of AFAS work is its systems-analytical approach and the interdisciplinary cooperation between scientists, engineers, economists and social scientists. (orig./HP)

  12. Expert Meeting Report. Recommendations for Applying Water Heaters in Combination Space and Domestic Water Heating Systems

    Energy Technology Data Exchange (ETDEWEB)

    Rudd, A. [Building Science Corporation (BSC), Somerville, MA (United States); Ueno, K. [Building Science Corporation (BSC), Somerville, MA (United States); Bergey, D. [Building Science Corporation (BSC), Somerville, MA (United States); Osser, R. [Building Science Corporation (BSC), Somerville, MA (United States)

    2012-06-01

    This Building America expert meeting was held on 7/31/2011, in Westford, Massachusetts. Presentations and discussions centered on the design, performance, and maintenance of these combination systems, with the goal of developing foundational information toward the development of a Building America Measure Guideline on this topic.

  13. Comparison of control systems applied to the handling of radioactive reactor components

    International Nuclear Information System (INIS)

    The first generation of nuclear power stations have individual reactors each incorporating complete facilities for servicing components and refuelling. In the later designs, each power station has two reactors which are connected by a central block. This central block contains one set of facilities to service both reactors, but to improve the station capability, some of these are to be replicated. The central block incorporates a hoist well which was used during construction for the accessing of complete components. On completion of this work, the physical size of the hoist well is such as to permit the incorporation of additional facilities if these are shown to be operationally and economically desirable. Since a number of years of power operation has elapsed, the advantages of back-fitting to existing fuel-handling facilities has been illustrated. Since the mechanical arrangements and operating procedures are substantially similar for both the original and new handling facilities, the paper will illustrate the control systems provided for each. The configuration of the system is arranged to have two channels of control which complies with the current standard requirements in the United Kingdom. These requirements are more stringent than when the existing facility was designed and constructed, as described in the relevant sections of the paper. The new system has been designed and is being manufactured to comply with the Central Electricity Generating Board standard for nuclear fuel route interlock and control systems. (author)

  14. Development of a diagnostic expert system for eddy current data analysis using applied artificial intelligence methods

    International Nuclear Information System (INIS)

    A diagnostic expert system that integrates database management methods, artificial neural networks, and decision-making using fuzzy logic has been developed for the automation of steam generator eddy current test (ECT) data analysis. The new system, known as EDDYAI, considers the following key issues: (1) digital eddy current test data calibration, compression, and representation; (2) development of robust neural networks with low probability of misclassification for flaw depth estimation; (3) flaw detection using fuzzy logic; (4) development of an expert system for database management, compilation of a trained neural network library, and a decision module; and (5) evaluation of the integrated approach using eddy current data. The implementation to field test data includes the selection of proper feature vectors for ECT data analysis, development of a methodology for large eddy current database management, artificial neural networks for flaw depth estimation, and a fuzzy logic decision algorithm for flaw detection. A large eddy current inspection database from the Electric Power Research Institute NDE Center is being utilized in this research towards the development of an expert system for steam generator tube diagnosis. The integration of ECT data pre-processing as part of the data management, fuzzy logic flaw detection technique, and tube defect parameter estimation using artificial neural networks are the fundamental contributions of this research. (orig.)

  15. Studies on a Foam System of Ultralow Interfacial Tension Applied in Daqing Oilfield after Polymer Flooding

    Directory of Open Access Journals (Sweden)

    Hong-sheng Liu

    2013-01-01

    Full Text Available In order to study the effects of oil displacement by a foam system of ultralow interfacial tension, the interfacial activities and foam properties of a nonionic gemini surfactant (DWS were investigated under Daqing Oilfield reservoir conditions. Injection methods and alternate cycle of the foam system were discussed here on the basis of results from core flow experiments. It was obtained that the surface tension of DWS was approximately 25 mN/m, and ultralow interfacial tension was reached between oil and DWS with a surfactant concentration between 0.05wt% and 0.4wt%. The binary system showed splendid foam performances, and the preferential surfactant concentration was 0.3wt% with a polymer concentration of 0.2wt%. When gas and liquid were injected simultaneously, flow control capability of the foam reached its peak at the gas-liquid ratio of 3 : 1. Enhanced oil recovery factor of the binary foam system exceeded 10% in a parallel natural cores displacement after polymer flooding.

  16. Applying Peer-to-Peer Technology to the Building of Distributed Educational Systems

    Science.gov (United States)

    Leighton, Greg; Muldner, Tomasz

    2005-01-01

    Existing educational systems built for cooperative and collaborative activities are most often based on the client/server paradigm of distributed computing. This article shows that a new model for distributed computing, Peer-to-Peer (P2P), provides new opportunities for building distributed educational applications. It begins by reviewing general…

  17. Quality assurance programme applied to mobile C-arm fluoroscopy systems

    International Nuclear Information System (INIS)

    The importance of quality assurance (QA) of X-ray equipment in diagnostic imaging departments is well recognised. However, practically no attention has been paid in the literature to the application of QA programmes to mobile C-arm fluoroscopy systems. This equipment is sometimes omitted from these programmes because it is often 'off-site' from the main radiological facility and suitable QA protocols are unavailable. The need for QA can be substantiated by the fact that these systems are finding greater clinical use in orthopaedic, vascular and cardiac applications. Hence, there is a growing awareness among users for the need of good image quality and low patient radiation dose. In view of this, the objective of this study was to review the existing literature, design a suitable QA protocol for this equipment and use it to survey 10 C-arms in clinical use. The protocol was designed to address mechanical and electrical safety in addition to radiation safety and image quality. Results indicate substantial performance differences between systems with significant variations in input air kerma rate to the image receptor. The authors believe that such a protocol is necessary with a view to establishing optimal performance levels and assist in the development of suitable 'write-off' criteria for such systems. (orig.)

  18. Evaluation of Linear and Non-Linear Control Schemes Applied to a Hydraulic Servo System

    DEFF Research Database (Denmark)

    Andersen, Torben Ole; Hansen, Michael Rygaard; Pedersen, Henrik Clemmensen

    2005-01-01

    Due to the innovation of low-cost electronics such as sensors, microcontrollers etc., the focus on highperformance motion control is increasing. This work focuses on position control of single-input single-output hydraulic servo-systems in general. A hydraulically actuated robotic manipulator...

  19. Applying Cognitive Load Theory to the Redesign of a Conventional Database Systems Course

    Science.gov (United States)

    Mason, Raina; Seton, Carolyn; Cooper, Graham

    2016-01-01

    Cognitive load theory (CLT) was used to redesign a Database Systems course for Information Technology students. The redesign was intended to address poor student performance and low satisfaction, and to provide a more relevant foundation in database design and use for subsequent studies and industry. The original course followed the conventional…

  20. Applying a Web and Simulation-Based System for Adaptive Competence Assessment of Spinal Anaesthesia

    Science.gov (United States)

    Hockemeyer, Cord; Nussbaumer, Alexander; Lövquist, Erik; Aboulafia, Annette; Breen, Dorothy; Shorten, George; Albert, Dietrich

    The authors present an approach for implementing a system for the assessment of medical competences using a haptic simulation device. Based on Competence based Knowledge Space Theory (CbKST), information on the learners’ competences is gathered from different sources (test questions, data from the simulator, and supervising experts’ assessments).

  1. New head-mounted display system applied to endoscopic management of upper urinary tract carcinomas

    Directory of Open Access Journals (Sweden)

    Junichiro Ishioka

    2014-12-01

    Full Text Available Purpose We tested a new head-mounted display (HMD system for surgery on the upper urinary tract. Surgical Technique Four women and one man with abnormal findings in the renal pelvis on computed tomography and magnetic resonance imaging underwent surgery using this new system. A high definition HMD (Sony, Tokyo, Japan is connected to a flexible ureteroscope (Olympus, Tokyo, Japan and the images from the ureteroscope are delivered simultaneously to various participants wearing HMDs. Furthermore, various information in addition to that available through the endoscope, such as the narrow band image, the fluoroscope, input from a video camera mounted on the lead surgeon’s HMD and the vital monitors can be viewed on each HMD. Results Median operative duration and anesthesia time were 53 and 111 minutes, respectively. The ureteroscopic procedures were successfully performed in all cases. There were no notable negative outcomes or incidents (Clavien-Dindo grade ≥1. Conclusion The HMD system offers simultaneous, high-quality magnified imagery in front of the eyes, regardless of head position, to those participating in the endoscopic procedures. This affordable display system also provides various forms of information related to examinations and operations while allowing direct vision and navigated vision.

  2. A novel straightness measurement system applied to the position monitoring of large Particle Physics Detectors

    CERN Document Server

    Goudard, R; Ribeiro, R; Klumb, F

    1999-01-01

    The Compact Muon Solenoid experiment, CMS, is one of the two general purpose experiments foreseen to operate at the Large Hadron Collider, LHC, at CERN, the European Laboratory for Particle Physics. The experiment aims to study very high energy collisions of proton beams. Investigation of the most fundamental properties of matter, in particular the study of the nature of the electroweak symmetry breaking and the origin of mass, is the experiment scope. The central Tracking System, a six meter long cylinder with 2.4 m diameter, will play a major role in all physics searches of the CMS experiment. Its performance depends upon the intrinsic detector performance, on the stability of the supporting structure and on the overall survey, alignment and position monitoring system. The proposed position monitoring system is based on a novel lens-less laser straightness measurement method able to detect deviations from a nominal position of all structural elements of the Central Tracking system. It is based on the recipr...

  3. Exact Linearization of Nonholonomic System Dynamics Applied to Control of Differentially Driven Soccer Robot

    Czech Academy of Sciences Publication Activity Database

    Grepl, Robert; Lee, B.; Kratochvíl, Ctirad; Šolc, F.; Hrabec, J.

    2008-01-01

    Roč. 15, č. 5 (2008), s. 311-318. ISSN 1802-1484 R&D Projects: GA ČR GA101/06/0063 Institutional research plan: CEZ:AV0Z20760514 Keywords : nonholonomic system dynamics * soccer robot Subject RIV: JD - Computer Applications, Robot ics

  4. Systems Thinking Tools as Applied to Community-Based Participatory Research: A Case Study

    Science.gov (United States)

    BeLue, Rhonda; Carmack, Chakema; Myers, Kyle R.; Weinreb-Welch, Laurie; Lengerich, Eugene J.

    2012-01-01

    Community-based participatory research (CBPR) is being used increasingly to address health disparities and complex health issues. The authors propose that CBPR can benefit from a systems science framework to represent the complex and dynamic characteristics of a community and identify intervention points and potential "tipping points." Systems…

  5. The design and testing of an electrolyte destratification system applied to a 96 V Alco 2200 battery

    Science.gov (United States)

    Nowak, D.; Tomantschger, K.

    1984-01-01

    A pump system for electrolyte destratification in off-the-shelf conventional lead acid batteries was designed and tested at various operating temperatures. The system requires no modification to the battery case. The pump is inserted through small (3 to 4 mm) holes in the battery case top. The system applied was to a 96 V ALCO 2200 battery. The charge time was cut in half, the water loss was minimized, and overall efficiencies for the modified ALCO 2200 increased. Leakage problems were experienced in some modules due to the deterioration of the glue which attaches the air-lift pump manifolds onto the battery cover. The tests were performed on a 48 V system and extrapolated to a 96 V system.

  6. [Computer-assisted validation system applied to hematology: Valab-hemato].

    Science.gov (United States)

    Corberand, J X; Rogari, E; Laharrague, P; Fillola, G; Valdiguié, P

    1994-01-01

    Validation of laboratory reports is the ultimate step before transmission of results to the clinician. The biologist checks the intrinsic consistency of the data as well as their possible medical value that is liable to lead to other investigations. Such a policy, when performed on all the data, is time-consuming, boring and uncertain. This step may be simplified by the use of a computerized expert system. The computer assisted validation system presented here concerns routine haematology data (Valab-haemato). Like its predecessor devoted to clinical chemistry (Valab-Biochem) it is based on the performance of a powerful inference engine which generates a decision-making tree for each report according to the data. This adaptability gives the system a capacity very close to human reasoning. In its haematology version the system deals with many variables including sex, age, origin of the patient (hospital ward), and the haematological data (blood cell count, differential, reticulocyte count, various information drawn from microscope examination of the blood smear as well as any report concerning the blood sample, erythrocyte sedimentation rate). Previous data are also taken into account, as well as the normal ranges, the values beyond which no result can be automatically validated and the delta-check. Some information definitely prevents validation of the results, others can be validated if they have been previously approved. Whereas the method of reasoning is fixed, all items are changeable in order to adapt the system to the type of activity of the laboratory.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:7856947

  7. A Comparison between Different Error Modeling of MEMS Applied to GPS/INS Integrated Systems

    Directory of Open Access Journals (Sweden)

    Fabio Dovis

    2013-07-01

    Full Text Available Advances in the development of micro-electromechanical systems (MEMS have made possible the fabrication of cheap and small dimension accelerometers and gyroscopes, which are being used in many applications where the global positioning system (GPS and the inertial navigation system (INS integration is carried out, i.e., identifying track defects, terrestrial and pedestrian navigation, unmanned aerial vehicles (UAVs, stabilization of many platforms, etc. Although these MEMS sensors are low-cost, they present different errors, which degrade the accuracy of the navigation systems in a short period of time. Therefore, a suitable modeling of these errors is necessary in order to minimize them and, consequently, improve the system performance. In this work, the most used techniques currently to analyze the stochastic errors that affect these sensors are shown and compared: we examine in detail the autocorrelation, the Allan variance (AV and the power spectral density (PSD techniques. Subsequently, an analysis and modeling of the inertial sensors, which combines autoregressive (AR filters and wavelet de-noising, is also achieved. Since a low-cost INS (MEMS grade presents error sources with short-term (high-frequency and long-term (low-frequency components, we introduce a method that compensates for these error terms by doing a complete analysis of Allan variance, wavelet de-nosing and the selection of the level of decomposition for a suitable combination between these techniques. Eventually, in order to assess the stochastic models obtained with these techniques, the Extended Kalman Filter (EKF of a loosely-coupled GPS/INS integration strategy is augmented with different states. Results show a comparison between the proposed method and the traditional sensor error models under GPS signal blockages using real data collected in urban roadways.

  8. Managing common resources in local and global systems. Applying theory across scales

    Energy Technology Data Exchange (ETDEWEB)

    Karlsson, Sylvia [ed.

    1997-12-31

    The main point brought forward in this publication is the productiveness of applying theoretical elements, developed within common property resource (CPR) literature, to a broader field of cases on different scales. The common framework for the contributions is a series of seminars held at the Department of Water and Environmental Studies in the spring of 1996, covering expanding work during the last decade on common property resource (CPR) management. It is obvious that there were a broad range of definitions of the concept CPR in the literature. The common pool/property resource concepts are both used, often depending on the resource studied, and authors in this volume have used both terms accordingly. Certain points are raised from empirical cases presented in this volume that are partly missing or not thoroughly stressed in other work in the area of CPR management and which crystallized much clearer when contrasting the situation for cases from different scales. Separate abstracts have been performed for five of the seven contributions

  9. Applying Human Factors Evaluation and Design Guidance to a Nuclear Power Plant Digital Control System

    Energy Technology Data Exchange (ETDEWEB)

    Thomas Ulrich; Ronald Boring; William Phoenix; Emily Dehority; Tim Whiting; Jonathan Morrell; Rhett Backstrom

    2012-08-01

    The United States (U.S.) nuclear industry, like similar process control industries, has moved toward upgrading its control rooms. The upgraded control rooms typically feature digital control system (DCS) displays embedded in the panels. These displays gather information from the system and represent that information on a single display surface. In this manner, the DCS combines many previously separate analog indicators and controls into a single digital display, whereby the operators can toggle between multiple windows to monitor and control different aspects of the plant. The design of the DCS depends on the function of the system it monitors, but revolves around presenting the information most germane to an operator at any point in time. DCSs require a carefully designed human system interface. This report centers on redesigning existing DCS displays for an example chemical volume control system (CVCS) at a U.S. nuclear power plant. The crucial nature of the CVCS, which controls coolant levels and boration in the primary system, requires a thorough human factors evaluation of its supporting DCS. The initial digital controls being developed for the DCSs tend to directly mimic the former analog controls. There are, however, unique operator interactions with a digital vs. analog interface, and the differences have not always been carefully factored in the translation of an analog interface to a replacement DCS. To ensure safety, efficiency, and usability of the emerging DCSs, a human factors usability evaluation was conducted on a CVCS DCS currently being used and refined at an existing U.S. nuclear power plant. Subject matter experts from process control engineering, software development, and human factors evaluated the DCS displays to document potential usability issues and propose design recommendations. The evaluation yielded 167 potential usability issues with the DCS. These issues should not be considered operator performance problems but rather opportunities

  10. Experience with applying the automated control system to maintenance at the Bohunice nuclear power plant

    International Nuclear Information System (INIS)

    The automated system of maintenance control at the V-1 nuclear power plant at Jaslovske Bohunice uses experience gained with the maintenance of the A-1 nuclear power plant. With regard to the range of work operations, maintenance includes inspection, routine repair, overhaul of equipment and replacement. Also observed is the classification of equipment according to whether it may be repaired without reactor shutdown or whether the reactor will have to be shut down. At present the maintenance of the Jaslovske Bohunice nuclear power plant is being processed by an automated control system into five year variable plans of repairs, annual and monthly plans of repairs, plans of shut-downs and a schedule of unit shutdowns. The repair plan includes over 6000 items. (Z.M.)

  11. Radiotherapy applied to tumours of the intracranial central nervous systems in the dog

    International Nuclear Information System (INIS)

    As domestic animals such as dogs are living older because of a better life quality and better cares, they may more frequently develop tumours in their intracranial central nervous system. In this research thesis, the author addresses this specific topic. He first recalls fundamental physical and biological aspects for the understanding of radiotherapy action mechanisms, and the modalities of such a treatment. He addresses the general study of intracranial central nervous system tumours in dogs: brief recall on anatomic and histological aspects, presentation of their classification and their prevalence, and precise descriptions of their characteristics. In the third part, the author reports clinical and para-clinical data which allow the diagnosis of an intracranial nervous tissue tumour. The last part presents different available therapeutic modalities, more particularly addresses the interest of radiotherapy in neuro-oncology, and compares published results

  12. Multi-wavelength metal vapor laser systems for solving applied problems of atmospheric spectroscopy

    Science.gov (United States)

    Soldatov, A. N.; Mirza, S. Y.; Polunin, Yu. P.; Shumeiko, A. S.; Kostadinov, I. K.

    2015-11-01

    Results of a cycle of experimental investigations of a multi-wavelength metal vapor laser system based on original configuration of a multi-medium metal vapor laser source are presented. Novelty of our approach consists in that two gas-discharge active elements (on copper bromide and strontium vapors) are arranged in a common cavity, and each of them is pumped by an independent power supply unit, which allows them to be optimized independently for excitation conditions and thereby the output set of lasing wavelengths and their relative power distribution to be regulated. This makes the above-described system promising for a number of scientific and technological applications. The total output power of 11 spectral components lying in the range 0.43-6.45 μm reached ~17 W.

  13. Applying the whole-system settings approach to food within universities.

    Science.gov (United States)

    Doherty, Sharon; Cawood, Jennie; Dooris, Mark

    2011-09-01

    Universities represent an important setting for promoting health and well-being--and specifically for developing systems that support healthy and sustainable food procurement and provision. By drawing on the whole-system settings approach and working within the framework offered by Healthy Universities, higher education institutions are in a strong position to address the full range of issues that make up the university 'foodscape', thereby promoting health in an integrated and far-reaching way that takes account of the relationships between environments and behaviours, and between staff, students and the wider community. Informed particularly by work in England, this paper uses a healthy settings model to explore and discuss how the Healthy Universities approach can help to ensure a holistic and integrated approach to addressing issues relating to food. PMID:21999026

  14. Future Research in Agile Systems Development: Applying Open Innovation Principles Within the Agile Organisation

    Science.gov (United States)

    Conboy, Kieran; Morgan, Lorraine

    A particular strength of agile approaches is that they move away from ‘introverted' development and intimately involve the customer in all areas of development, supposedly leading to the development of a more innovative and hence more valuable information system. However, we argue that a single customer representative is too narrow a focus to adopt and that involvement of stakeholders beyond the software development itself is still often quite weak and in some cases non-existent. In response, we argue that current thinking regarding innovation in agile development needs to be extended to include multiple stakeholders outside the business unit. This paper explores the intra-organisational applicability and implications of open innovation in agile systems development. Additionally, it argues for a different perspective of project management that includes collaboration and knowledge-sharing with other business units, customers, partners, and other relevant stakeholders pertinent to the business success of an organisation, thus embracing open innovation principles.

  15. System of Indicators in the Innovation Management: Business Intelligence Applied to Tourism

    Science.gov (United States)

    Lozada, Dayana; Araque, Francisco; Castillo, Jose Manuel; Salguero, Alberto; Delgado, Cecilia; Noda, Marcia; Hernández, Gilberto

    The work presents an approach to study mechanisms that allows managers the Innovation Management (IM) measurements. It is assumed, as main motivation, the analysis of patterns for the design of an integral system of indicators. A methodology that integrates the thought process, focusing on the Business Intelligence and the Balance Scorecard will be presented. A group of indexes based on the multidimensionality of IM in organizations of the sector of tourism is proposed. To approach this quality it is necessary to contextualize, in the conditions of sectoral operation, the theories, models and systems used in our approach. It has been used intervention methods like experts' criteria, consensus search techniques by means of surveys, consultation of documents, and statistical methods such as analysis of the main components.

  16. Error Vector Normalized Adaptive Algorithm Applied to Adaptive Noise Canceller and System Identification

    Directory of Open Access Journals (Sweden)

    Zayed Ramadan

    2010-01-01

    Full Text Available Problem statement: This study introduced a variable step-size Least Mean-Square (LMS algorithm in which the step-size is dependent on the Euclidian vector norm of the system output error. The error vector includes the last L values of the error, where L is a parameter to be chosen properly together with other parameters in the proposed algorithm to achieve a trade-off between speed of convergence and misadjustment. Approach: The performance of the algorithm was analyzed, simulated and compared to the Normalized LMS (NLMS algorithm in several input environments. Results: Computer simulation results demonstrated substantial improvements in the speed of convergence of the proposed algorithms over other algorithms in stationary environments for the same small level of misadjustment. In addition, the proposed algorithm shows superior tracking capability when the system is subjected to an abrupt disturbance. Conclusion: For nonstationary environments, the algorithm performs as well NLMS and other variable step-size algorithms.

  17. Wigner distribution function applied to twisted Gaussian light propagating in first-order optical systems.

    Science.gov (United States)

    Bastiaans, M J

    2000-12-01

    A measure for the twist of Gaussian light is expressed in terms of the second-order moments of the Wigner distribution function. The propagation law for these second-order moments between the input plane and the output plane of a first-order optical system is used to express the twist in one plane in terms of moments in the other plane. Although in general the twist in one plane is determined not only by the twist in the other plane but also by other combinations of the moments, several special cases exist for which a direct relationship between the twists can be formulated. Three such cases, for which zero twist is preserved, are considered: (i) propagation between conjugate planes, (ii) adaptation of the signal to the system, and (iii) the case of symplectic Gaussian light. PMID:11140506

  18. Frequency Estimation in Iterative Interference Cancellation Applied to Multibeam Satellite Systems

    Directory of Open Access Journals (Sweden)

    J. P. Millerioux

    2007-07-01

    Full Text Available This paper deals with interference cancellation techniques to mitigate cochannel interference on the reverse link of multibeam satellite communication systems. The considered system takes as a starting point the DVB-RCS standard with the use of convolutional coding. The considered algorithm consists of an iterative parallel interference cancellation scheme which includes estimation of beamforming coefficients. This algorithm is first derived in the case of a symbol asynchronous channel with time-invariant carrier phases. The aim of this article is then to study possible extensions of this algorithm to the case of frequency offsets affecting user terminals. The two main approaches evaluated and discussed here are based on (1 the use of block processing for estimation of beamforming coefficients in order to follow carrier phase variations and (2 the use of single-user frequency offset estimations.

  19. The roles of a decision support system in applying forest ecosystem management in Northeast China

    Institute of Scientific and Technical Information of China (English)

    DAI; Limin; ZHENG; Bofu; Guofan; Shao; ZHOU; Li

    2006-01-01

    Forest ecosystems provide a variety of services and forest ecosystem management (FEM) is an effective approach to maximize the services. Because of the complexity of forest ecosystems, the applications of FEM can be facilitated with decision support systems (DSS) that recognize and incorporate ecological and socio-economic variables. With the rapid development of computation and information technologies, DSS have been advanced in many ways. Traditional forest management within a forestry unit in China is planned on a yearly basis. The planning itself remains primarily a verbal concept as there are no quantitative decision-support tools available to translate the concept into forest management actions. For the purposes of FEM at the management level, a forest management DFF, FORESTAR(R), has been developed under a framework of geographic information system (GIS) and forest models. The paper explained the intelligent modeling mechanisms and demonstrated how the applications of FEM can be strengthened with the applications of FORESTAR(R).

  20. Open Rule-setting System Applied to Conceptual Design of Engines

    Institute of Scientific and Technical Information of China (English)

    LI Chao; LIAO Ri-dong; ZUO Zheng-xing

    2006-01-01

    Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute effective models for the following analysis process of CAE and CAPP. The problems arisen in the process of conceptual design with the traditional experience-based development method are analyzed. Based on those analyses, open rule-setting method is presented and some associated technical problems are discussed. The functional framework of open rule-setting system was built as software engineering methods. The speciality of the engine product as a kind of complex product and the requirement of the engine product based on its structural particularity to rule-setting system are considered carefully. A demonstration is supplied to illustrate how the open rule-setting method enhances the efficiency and quality of the engine conceptual design.

  1. A fuzzy-split range control system applied to a fermentation process.

    Science.gov (United States)

    Fonseca, Rodolpho Rodrigues; Schmitz, Jones Erni; Fileti, Ana Maria Frattini; da Silva, Flavio Vasconcelos

    2013-08-01

    In this study it was proposed the application of a fuzzy-PI controller in tandem with a split range control strategy to regulate the temperature inside a fermentation vat. Simulations were carried out using different configurations of fuzzy controllers and split range combinations for regulatory control. The performance of these control systems were compared using conventional integral of error criteria, the demand of utilities and the control effort. The proposed control system proved able to adequately regulate the temperature in all the tests. Besides, considering a similar ITAE index and using the energetically most efficient split range configuration, fuzzy-PI controller provided a reduction of approximately 84.5% in the control effort and of 6.75% in total demand of utilities by comparison to a conventional PI controller. PMID:23759431

  2. Applying of Reliability Techniques and Expert Systems in Management of Radioactive Accidents

    International Nuclear Information System (INIS)

    Accidents including radioactive exposure have variety of nature and size. This makes such accidents complex situations to be handled by radiation protection agencies or any responsible authority. The situations becomes worse with introducing advanced technology with high complexity that provide operator huge information about system working on. This paper discusses the application of reliability techniques in radioactive risk management. Event tree technique from nuclear field is described as well as two other techniques from nonnuclear fields, Hazard and Operability and Quality Function Deployment. The objective is to show the importance and the applicability of these techniques in radiation risk management. Finally, Expert Systems in the field of accidents management are explored and classified upon their applications

  3. Systemic distribution of sup 14 C-labeled formaldehyde applied in the root canal following pulpectomy

    Energy Technology Data Exchange (ETDEWEB)

    Hata, G.I.; Nishikawa, I.; Kawazoe, S.; Toda, T.

    1989-11-01

    The systemic distribution of {sup 14}C-labeled formaldehyde which had been placed in the root canals of the canines of cats following pulpectomies was studied using liquid scintillation counting and whole-body autoradiographic technique. Radioactive {sup 14}C which had been placed in the canals was found in the plasma 30 min after the root canal procedure. The recovery of systemic {sup 14}C radioactivity increased with time. In addition, it seemed that approximately 3% of the dose placed in the teeth was excreted in the urine within 36 h. Whole-body autoradiograms indicated extensive concentration of {sup 14}C radioactivity in tissues other than those analyzed with the liquid scintillation technique.

  4. Frequency Estimation in Iterative Interference Cancellation Applied to Multibeam Satellite Systems

    Directory of Open Access Journals (Sweden)

    Ducasse A

    2007-01-01

    Full Text Available This paper deals with interference cancellation techniques to mitigate cochannel interference on the reverse link of multibeam satellite communication systems. The considered system takes as a starting point the DVB-RCS standard with the use of convolutional coding. The considered algorithm consists of an iterative parallel interference cancellation scheme which includes estimation of beamforming coefficients. This algorithm is first derived in the case of a symbol asynchronous channel with time-invariant carrier phases. The aim of this article is then to study possible extensions of this algorithm to the case of frequency offsets affecting user terminals. The two main approaches evaluated and discussed here are based on (1 the use of block processing for estimation of beamforming coefficients in order to follow carrier phase variations and (2 the use of single-user frequency offset estimations.

  5. Applying Use Cases to Describe the Role of Standards in e-Health Information Systems

    Science.gov (United States)

    Chávez, Emma; Finnie, Gavin; Krishnan, Padmanabhan

    Individual health records (IHRs) contain a person's lifetime records of their key health history and care within a health system (National E-Health Transition Authority, Retrieved Jan 12, 2009 from http://www.nehta.gov.au/coordinated-care/whats-in-iehr, 2004). This information can be processed and stored in different ways. The record should be available electronically to authorized health care providers and the individual anywhere, anytime, to support high-quality care. Many organizations provide a diversity of solutions for e-health and its services. Standards play an important role to enable these organizations to support information interchange and improve efficiency of health care delivery. However, there are numerous standards to choose from and not all of them are accessible to the software developer. This chapter proposes a framework to describe the e-health standards that can be used by software engineers to implement e-health information systems.

  6. Preliminary checklists for applying SERCON (System for Evaluating Rivers for Conservation to rivers in Serbia

    Directory of Open Access Journals (Sweden)

    Teodorović Ivana

    2012-01-01

    Full Text Available This paper describes the first steps in gathering biological data to assess the conservation value of rivers in Serbia, using SERCON (System for Evaluating Rivers for Conservation. SERCON was developed in the UK to improve consistency in assessments of river ‘quality’ by using a scoring system to evaluate habitat features and species groups, catchment characteristics, and the potential impacts to which river systems may be subjected. This paper provides checklists for aquatic, semiaquatic and marginal plants, macroinvertebrates, fish and birds associated with rivers in Serbia, collated from a wide range of published and unpublished sources. These lists should be regarded as provisional because few wide-ranging biological surveys have been carried out specifically on Serbian rivers; further revisions are likely as more information becomes available in future. Ultimately, the work will benefit regulators and decision-makers with responsibility for river management under the new Water Law, and contribute to river protection and conservation in Serbia. [Acknowledgments. The hydromorphology dataset was prepared for the project ‘Biosensing Technologies and Global System for Long-Term Research and Integrated Management of Ecosystems’ (Biosensing tehnologije i globalni sistem za kontinuirana istraživanja i integrisano upravljanje ekosistema III 043002 grant, while the biodiversity dataset was prepared the project Plant biodiversity of Serbia and the Balkans – assessment, sustainable use and protection (Biodiverzitet biljnog sveta Srbije i Balkanskog poluostrva – procena, održivo korišćenje i zaštita 173030 Grant, supported by Ministry of Education and Science, Republic of Serbia

  7. Jet Riemann-Lagrange Geometry Applied to Evolution DEs Systems from Economy

    OpenAIRE

    Neagu, Mircea

    2007-01-01

    The aim of this paper is to construct a natural Riemann-Lagrange differential geometry on 1-jet spaces, in the sense of nonlinear connections, generalized Cartan connections, d-torsions, d-curvatures, jet electromagnetic fields and jet Yang-Mills energies, starting from some given non-linear evolution DEs systems modelling economic phenomena, like the Kaldor model of the bussines cycle or the Tobin-Benhabib-Miyao model regarding the role of money on economic growth.

  8. Applying Electronic Supply Chain Management Using Multi-Agent System: A Managerial Perspective

    OpenAIRE

    Haitham Al-zu’bi

    2010-01-01

    In the electronic business environment, supply chain management must deal with globalization, proliferating productvariety, organizational barriers, and quick information sharing. Consequently, appropriate tools are needed to support supply chainmanagement. We believe that software agents are good candidates to overcome these challenges. In this paper, I propose MAS+SCM,which is a Multi-Agent System (MAS) to support Electronic Supply Chain Management (E-SCM). The proposed model consists of as...

  9. Monte Carlo simulation of a digital coincidence system applied to 60Co standardization

    International Nuclear Information System (INIS)

    The Laboratorio de Metrologia Nuclear (LMN) at the Instituto de Pesquisas Energeticas e Nucleares (IPEN) is developing a Digital Coincidence System (DCS), including the design of the proper acquisition electronics and analysis software. A brief discussion about the measurement methodology and the electronics operation is presented. This work is focused on the results of the designed software (the Monte Carlo simulation of 60Co decay data and the Coincidence Data Analysis), which are in good agreement with the experimental data. (author)

  10. Conceptual and Laboratory Exercise to Apply Newton's Second Law to a System of Many Forces

    Science.gov (United States)

    Mungan, Carl E.

    2012-01-01

    A pair of objects on an inclined plane are connected together by a string. The upper object is then connected to a fixed post via a spring. The situation is first analysed as a classroom exercise in using free-body diagrams to solve Newton's second law for a system of objects upon which many different kinds of force are acting (string tension,…

  11. The household responsibility system and social change in rural Guizhou, China: applying a cohort approach

    OpenAIRE

    Yuan, J.

    2010-01-01

    Since the introduction of the Household Responsibility System (HRS) in 1978, Chinese rural households have experienced many changes. The HRS allows farming households to organize their own agricultural production on contracted lands, enabling them to work more efficiently and get more benefits compared to during the collective era. Since the market liberation, the number of enterprises that can absorb the surplus labour has increased, and many men migrate to earn cash. This entails changes in...

  12. Hardware-software system for simulating and analyzing earthquakes applied to civil structures

    OpenAIRE

    J. P. Amezquita-Sanchez; Osornio-Rios, R. A.; Romero-Troncoso, R. J.; Dominguez-Gonzalez, A.

    2012-01-01

    The occurrence of recent strong earthquakes, the incessant worldwide movements of tectonic plates and the continuous ambient vibrations caused by traffic and wind have increased the interest of researchers in improving the capacity of energy dissipation to avoid damages to civil structures. Experimental testing of structural systems is essential for the understanding of physical behaviors and the building of appropriate analytic models in order to expose difficulties that may not have been co...

  13. Soil Applied Systemic Insecticides for Control of Asian citrus psyllid in Newly Planted Citrus Trees

    OpenAIRE

    Stansly, Phil; Kostyk, Barry

    2014-01-01

    Orchard renewal is a special challenge where HLB is endemic.  Young trees are especially susceptible to the disease and continuously attractive to the psyllid vector due to frequent flushing.  Heavy reliance is placed on systemic insecticides to protect young trees.  However, all presently labeled for citrus are neonicotinoids (IRAC Group 4a) making resistance likely and the long term viability of this strategy questionable.  Rotation partners are needed to forestall selection for resistance....

  14. Technical & Entrepreneurial Research Information System: An applied e-model For Sustainable Entrepreneurship Development

    Directory of Open Access Journals (Sweden)

    Dr. Dhrupad Mahtur

    2005-01-01

    Full Text Available This article stresses on the need for an e-application like Technical and Entrepreneurial Research Information System (TERIS, which enables interaction among academia, industry and various agencies related to researchers for sustainable entrepreneurship development. The functional details of the model are also discussed. This article is based on inputs with reference to the state of Rajasthan. However, the model can very well be replicated elsewhere.

  15. Toward learning autonomous pallets by using fuzzy rules, applied in a Conwip system

    OpenAIRE

    Mehrsai, Afshin; Karimi, Hamid Reza; Scholz-Reiter, Bernd

    2012-01-01

    Nowadays, material planning and control strategies are becoming continuously complex tasks spanning from individual plants to logistic networks. In fact, this is the consequence of increasing intricacy in product variants and their respective convolution in networks’ structures. Customers ask for specific products with individual characteristics that force companies for more clever performances by more flexibility. For doing so, the existing planning and control systems, which work based on c...

  16. A generic impact-scoring system applied to alien mammals in Europe.

    Science.gov (United States)

    Nentwig, Wolfgang; Kühnel, Elfi; Bacher, Sven

    2010-02-01

    We present a generic scoring system that compares the impact of alien species among members of large taxonomic groups. This scoring can be used to identify the most harmful alien species so that conservation measures to ameliorate their negative effects can be prioritized. For all alien mammals in Europe, we assessed impact reports as completely as possible. Impact was classified as either environmental or economic. We subdivided each of these categories into five subcategories (environmental: impact through competition, predation, hybridization, transmission of disease, and herbivory; economic: impact on agriculture, livestock, forestry, human health, and infrastructure). We assigned all impact reports to one of these 10 categories. All categories had impact scores that ranged from zero (minimal) to five (maximal possible impact at a location). We summed all impact scores for a species to calculate "potential impact" scores. We obtained "actual impact" scores by multiplying potential impact scores by the percentage of area occupied by the respective species in Europe. Finally, we correlated species' ecological traits with the derived impact scores. Alien mammals from the orders Rodentia, Artiodactyla, and Carnivora caused the highest impact. In particular, the brown rat (Rattus norvegicus), muskrat (Ondathra zibethicus), and sika deer (Cervus nippon) had the highest overall scores. Species with a high potential environmental impact also had a strong potential economic impact. Potential impact also correlated with the distribution of a species in Europe. Ecological flexibility (measured as number of different habitats a species occupies) was strongly related to impact. The scoring system was robust to uncertainty in knowledge of impact and could be adjusted with weight scores to account for specific value systems of particular stakeholder groups (e.g., agronomists or environmentalists). Finally, the scoring system is easily applicable and adaptable to other

  17. Reliability analysis and safety of digital systems applied to nuclear reactor protection

    International Nuclear Information System (INIS)

    A method for developing digital protection systems based upon reliability and safety requirements has been proposed. Directives for assessing such conditions are suggested. Techniques and the most common tools employed in hardware evaluation and modelling of such architectures have also been shown. In order to estimate the software quality, several mechanisms to control design, specification, and validation and verification (V and V) procedures are suggested. (author). 12 refs., 1 fig

  18. Error Vector Normalized Adaptive Algorithm Applied to Adaptive Noise Canceller and System Identification

    OpenAIRE

    Zayed Ramadan

    2010-01-01

    Problem statement: This study introduced a variable step-size Least Mean-Square (LMS) algorithm in which the step-size is dependent on the Euclidian vector norm of the system output error. The error vector includes the last L values of the error, where L is a parameter to be chosen properly together with other parameters in the proposed algorithm to achieve a trade-off between speed of convergence and misadjustment. Approach: The performance of the algorithm was analyzed,&...

  19. New Type Regulating Valve Applied in Cooling System of Blast Furnace

    Institute of Scientific and Technical Information of China (English)

    HE Sheng-ping; ZOU De-yu; XU Gang; LU De-chang

    2004-01-01

    A new type regulating valve with the cooling mode of constant temperature difference water supply, temperature difference self-operated regulating valve, was introduced into blast furnace cooling system to overcome shortcomings of the cooling mode of constant flow rate water supply. The results show that the temperature difference between inlet and outlet water of cooling wall can be decreased greatly and steadily, and the water supply for blast furnace cooling can be reduced considerably.

  20. Skin Parameter Map Retrieval from a Dedicated Multispectral Imaging System Applied to Dermatology/Cosmetology

    OpenAIRE

    Romuald Jolivot; Yannick Benezeth; Franck Marzani

    2013-01-01

    International audience In vivo quantitative assessment of skin lesions is an important step in the evaluation of skin condition. An objective measurement device can help as a valuable tool for skin analysis. We propose an explorative new multispectral camera specifically developed for dermatology/cosmetology applications. The multispectral imaging system provides images of skin reflectance at different wavebands covering visible and near-infrared domain. It is coupled with a neural network...