A Helicity-Based Method to Infer the CME Magnetic Field Magnitude in Sun and Geospace: Generalization and Extension to Sun-Like and M-Dwarf Stars and Implications for Exoplanet Habitability

Patsourakos et al. (Astrophys. J. 817, 14, 2016) and Patsourakos and Georgoulis (Astron. Astrophys. 595, A121, 2016) introduced a method to infer the axial magnetic field in flux-rope coronal mass ejections (CMEs) in the solar corona and farther away in the interplanetary medium. The method, based on the conservation principle of magnetic helicity, uses the relative magnetic helicity of the solar source region as input estimates, along with the radius and length of the corresponding CME flux rope. The method was initially applied to cylindrical force-free flux ropes, with encouraging results. We hereby extend our framework along two distinct lines. First, we generalize our formalism to several possible flux-rope configurations (linear and nonlinear force-free, non-force-free, spheromak, and torus) to investigate the dependence of the resulting CME axial magnetic field on input parameters and the employed flux-rope configuration. Second, we generalize our framework to both Sun-like and active M-dwarf stars hosting superflares. In a qualitative sense, we find that Earth may not experience severe atmosphere-eroding magnetospheric compression even for eruptive solar superflares with energies ~ 10^4 times higher than those of the largest Geostationary Operational Environmental Satellite (GOES) X-class flares currently observed. In addition, the two recently discovered exoplanets with the highest Earth-similarity index, Kepler 438b and Proxima b, seem to lie in the prohibitive zone of atmospheric erosion due to interplanetary CMEs (ICMEs), except when they possess planetary magnetic fields that are much higher than that of Earth.Comment: http://adsabs.harvard.edu/abs/2017SoPh..292...89

COVAD survey 2 long-term outcomes: unmet need and protocol

Vaccine hesitancy is considered a major barrier to achieving herd immunity against COVID-19. While multiple alternative and synergistic approaches including heterologous vaccination, booster doses, and antiviral drugs have been developed, equitable vaccine uptake remains the foremost strategy to manage pandemic. Although none of the currently approved vaccines are live-attenuated, several reports of disease flares, waning protection, and acute-onset syndromes have emerged as short-term adverse events after vaccination. Hence, scientific literature falls short when discussing potential long-term effects in vulnerable cohorts. The COVAD-2 survey follows on from the baseline COVAD-1 survey with the aim to collect patient-reported data on the long-term safety and tolerability of COVID-19 vaccines in immune modulation. The e-survey has been extensively pilot-tested and validated with translations into multiple languages. Anticipated results will help improve vaccination efforts and reduce the imminent risks of COVID-19 infection, especially in understudied vulnerable groups

Management And Analysis Of Data From Hydroelectric Plants

This paper presents a computer aided system that aims to improve the quality of data for hydroelectric plants. This system consists of two modules. The first is a relational database that organizes, standardizes and manages data from hydroelectric plants. The second module allows a user to build, store and manage advanced queries on this or certain other databases. The data manager and the queries builder were tested with data from Brazilian hydroelectric plants and the results show the potential for a significant improvement in terms of efficiency for the operation planning of electrical power systems. Planning has strong dependence on the quality of the data used in mathematical models and other built-in computational tools. The software project and the computational implementation of these modules use the Object-Oriented Paradigm, the C++ Programming Language and the Structured Query Language (SQL). This assures a modern and efficient structure for the system. ©2009 IEEE.Soares, S., Carneiro, A.A.F.M., Optimal Operation of Reservoirs for Electric Generation (1991) IEEE Transactions on Power Delivery, 6 (3). , JulyLopes, J.E.G., Hydropower Systems Optimization (2001), M.Sc. dissertation. FEC/USPLopes, J.E.G., Model for Operation Planning of Hydrothermal Systems for Electrical Energy Production (2007), Ph.D. dissertation. FEEC/UNICAMPArce, A., Ohishi, T., Soares, S., Optimal Dispatch of Generating Units of the Itaipú Hydroelectric Plant (2002) IEEE Transactions on Power Delivery, 17 (1). , FebruaryKo, S.-K., Fontane, D., Labadie, J., Multiobjective Optimization of Reservoir Systems Operation (1992) Water Resources Bulletin, 28 (1)Horstmann, C.S., (1997) Practical Object-Oriented Development in C++ and Java, , John Wiley e SonsCicogna, M.A., Model for Energetic Operation Planning of Hydrothermal Systems using Object Oriented Programming (1999), M.Sc. dissertation. FEEC/UNICAMPHollingworth, J., (2001) C++ Builder 5 Developer's Guide, , Sams PublishingJosuttis, N.M., (1999) The C++ Standard Library - A Tutorial and Reference, , Addison WesleyBowman, J.S., Emerson, S.L., Darnovsky, M., (1996) The Practical SQL Handbook - Using Structured Query Language, , Third Edition. Addison WesleyElmasri and Navathe. Fundamentals of Database Systems. Third Edition. Addison Wesley, 2000Cicogna, M.A., Support decision system to short and long term planning of hydroelectric power system (2003), Ph.D. dissertation. FEEC/UNICAMPHidalgo, I.G., Search System for Data Analysis from Hydroelectric Plants (2004), M.Sc. dissertation. FEEC/UNICAM

Arqueología de los moriscos: el problema morisco en España

Depto. de Prehistoria, Historia Antigua y ArqueologíaFac. de Geografía e HistoriaTRUEpu

Computer Aided System For Managing, Controlling And Analyzing Data From Hydroelectric Plants

This paper presents a computer aided system for managing, controlling and analyzing data from hydroelectric plants. The proposed system consists of three modules. The first is a relational database that organizes, standardizes and manages data from hydroelectric plants. The second module allows a user to build, store and manage advanced queries on this or certain other databases. The third is a simulator of the hydroelectric plants operation which can be used for planning the future operation or reproducing the past operation. The computational implementation of these modules uses the Object-Oriented Paradigm, the C++ Programming Language and the Structured Query Language (SQL). The data manager, the queries builder and the simulator were tested with data from Brazilian hydroelectric plants and the results show the potential of this system for the analysis and consistency evaluation of data from hydroelectric plants. © 2009 ASCE.34247494757Arce, A., Ohishi, T. and Soares, S. (2002). Optimal dispatch of generating units of the Itaipu hydroelectric plant. J. IEEE Transactions on Power Delivery, 17(1)Barros, M.T.L., Tsai, F.T.-C., Yang, S.-L., Lopes, J.E.G., Yeh, W.W.-G., Optimization of large-scale hydropower system operations (2003) J. of Water Resources Planning and Management, 129 (3), pp. 178-188Bowman, J.S., Emerson, S.L., Darnovsky, M., The practical SQL handbook - Using Structured Query Language (1996) Addison Wesley Professional, , MA, EUACicogna, M.A., Model for energetic operation planning of hydrothermal systems using object oriented programming (1999), MS thesis, State University of Campinas, SP, BrazilCicogna, M.A., Support decision system to short and long term planning of hydroelectric power system (2003), Ph.D thesis, State University of Campinas, SP, BrazilCicogna, M. A., Fontane D. G., Hidalgo, I. G and Lopes, J. E. G. (2009). Multiple Reservoir Simulation Using Multi-Criterion Restrictions and Object-Oriented Software Design. Accepted for the World Environmental & Water Resources Congress (ASCE-2009), Kansas City, Missouri, USAHidalgo, I.G., Search system for data analysis from hydroelectric plants (2004), MS thesis, State University of Campinas, SP, BrazilElmasri, R., Navathe, S., Fundamentals of database systems (2000) Addison Wesley Professional, , MA, EUAHorstmann, C.S., Practical object-oriented development in C++ and Java (1997) John Wiley & Sons, Inc, , NY, EUAHollingworth, J., Butterfield, D., Swart, B., Allsop, J., C++ Builder 5 developer's guide (2001) Sams Publishing, , EUAJosuttis, N.M., The C++ standard library - A tutorial and reference (1999) Addison Wesley Professional, , MA, EUALind, D.A., Marchal, W.G., Wathen, S.A., Statistical techniques in business and economic (2006) McGraw-Hill College, , MA, EUAPereira, M.V.F., Pinto, L.M.V.G., Stochastic optimization of a multireservoir hydroelectric system: A decomposition approach (1985) J. Water Resources Research, 21 (6), pp. 779-792Vinhal, C.D.N., Decision support system for energetic operation planning of electrical systems (1998), PhD thesis, State University of Campinas, SP, Brazi

A Genetic Algorithm Solution For Optimization Of The Power Generation Potential In Hydroelectric Plants

This paper presents an optimization model of the power generation potential for either new or repowered hydroelectric plants. It is based on curves that represent the unit efficiency as a function of the nominal output. The objective is to choose the combination of efficiency curve types that maximizes the power generation for certain load levels. The mathematical formulation results in a mixed integer, nonlinear programming problem. Genetic Algorithm is employed to solve this. The operators and parameters of the model are chosen by simulation using the objective function values as a selection method. A case study is carried out for two Brazilian hydroelectric plants: Sobradinho and Ilha Solteira. The results show the importance of the turbines model choice in order to get the maximum benefit of a plant. © 2013 IEEE.25042511(2008) Atlas of Electric Energy in Brazil (3rd Edition), , www.aneel.gov.br.Accessin:01/02/2012, ANEEL Electric Energy National AgencyNational energy plan 2030 in Brazil (2007) Ministry of Mines and Energy (MME), , EPEPadhy, M.K., Sainia, R.P., A review on silt erosion in hydro turbines (2008) Renewable and Sustainable Energy Reviews, 12 (7), pp. 1974-1987Soares, S., Salmazo, C.T., Minimum loss predispatch model for hydroelectric power plant systems (1997) IEEE Transactions on Power Systems, 12 (3), pp. 1220-1228Costa, T., Santos, D., Lança, R., (2001) Turbo Máquinas Hidráulicas., , http://w3.ualg.pt/rlanca/sebentahidaplicada/ha06turbinas.pdf, Access in:: 01/02/2012Dixon, S.L., (1998) Fluid Mechanics and Thermodynamics of Turbomachinery, pp. 16-18. , 4. ed. [S.l.: s.n.]Alves, G.M., Avaliaça ̃o da Viabilidade de Implantação de uma Microcentral Hidrelétrica, para Atender Consumidores Localizados em Regiões Isoladas (2007) Masteŕs Thesis, Agriculture Sciences Faculty, São Paulo State Universi TyMacIntyre, A.J., (1983) Máquinas Motrizes Hidráulicas, , Rio de Janeiro: Editora Guanabara Dois S.AMataix, C., (1970) Mecanica de Fluidos y Maquinas Hidraulicas, 21. , [S.l.] Harper & Row Publishers IncMichalewicz, Z., (1996) Genetic Algorithms + Data Structures = Evolution Programs. " [S.l.], , SringerHolland, H.J., (1975) Adaptation in Natural and Artificial Systems, , The University of Michigan PressLacerda, E.G.M., Carvalho, A.C.P.L., (1999) Introdução Aos Algoritmos Genéticos, , Federal University of Rio Grande do SulBielli, M., Caramia, M., Carotenuto, P., Genetic algorithms in bus network optimization (2002) Transportation Research, Parte C, 10, pp. 19-3

A Simulator Of The Hydroelectric Plants Operation As Tool For Analyzing Data

This paper presents the use of a simulator of the hydroelectric plants operation as tool for analyzing data. Two approaches are shown. In the first the simulator must reproduce the water discharge trajectory recorded by the plant. In the second the simulator's aim is reproduce the generation trajectory of a certain operation period. The two methods for analyzing data are described and the advantages and disadvantages of each are discussed. The data analysis via simulation has been applied to Brazilian hydroelectric plants which are under the coordination of the Brazilian Electric System National Operator. The results show the potential of this tool for the consistency evaluation of the data used in the hydroelectric operation planning. © 2008 IEEE.21418Lind, D.A., Marchal, W.G., Wathen, S.A., Statistical techniques in business and economic (2006) McGraw-Hill College, , MA, EUAHidalgo, I.G., Search system for data analysis from hydroelectric plants (2004), MS thesis, State University of Campinas, SP, BrazilHidalgo, I. G., Soares S., Fontane, D. G., Cicogna, M. A. (2009). Management and analysis of data from hydroelectric plants. Accepted for IEEE PES Power Systems Conference & Exhibition (PSCE)Vinhal, C.D.N., Decision support system for energetic operation planning of electrical systems (1998), PhD thesis, State University of Campinas, SP, BrazilArce, A., Ohishi, T., and Soares, S. (2002). Optimal dispatch of generating units of the Itaipu hydroelectric plant. J. IEEE Transactions on Power Delivery, 17(1)Cicogna, M.A., Model for energetic operation planning of hydrothermal systems using object oriented programming (1999), MS thesis, State University of Campinas, SP, BrazilCicogna, M.A., Support decision system to short and long term planning of hydroelectric power system (2003), Ph.D thesis, State University of Campinas, SP, Brazi

Daily Reservoir Inflow Forecasting Using Fuzzy Inference Systems

This paper presents the application of a methodology for daily reservoir inflow forecasting in Brazilian hydroelectric plants. The methodology is based on Fuzzy Inference Systems (FIS) and the technique used for adjusting of the model parameters is an offline version of the Expectation Maximization (EM) algorithm. In order to automate the application of the methodology and facilitate the analysis of the results, a tool that allows managing streamflow forecasting studies and visualizing their information in graphical form was developed. A case study was applied to the data from three Brazilian hydroelectric plants whose operation is under the coordination of the Electric System National Operator. They are located in the Grande basin, a part of the Parana basin with two main rivers: the Grande and the Pardo. The benefits of the model are analyzed using statistics calculations, such as: root mean square error, mean absolute percentage error, mean absolute error and mass curve coefficient. Besides that, graphics that compare the registered and predicted streamflow are presented. The results show an adequate performance of the model, leading to a promising alternative for daily streamflow forecasting. © 2011 IEEE.27452751National Science Council,Ministry of Education,Bureau of Foreign Tradehttp://www.openni.org/Dünser, A., Grasset, R., Seichter, H., Billinghurst, M., Applying HCI principles to AR systems design (2007) Charlotte, NC, USA: Mixed Reality User Interfaces: Specification, Authoring, Adaptation (MRUI'07: 2nd International Workshop at the IEEE Virtual Reality 2007 Conference), pp. 37-42. , 11 Mar 2007. Mixed Reality User Interfaces: Specification, Authoring, Adaptation (MRUI'07) Workshop ProceedingsEngelbart, D.C., (1962) Augmenting Human Intellect: A Conceptual Framework, , Summary Report, Contract AF 49(638)-1024, SRI Project 357B, Stanford Research Institute, Menlo Park, California October AD 289565Hoc, J.-M., From human-machine interaction to human-machine cooperation (2000) Ergonomics, 43 (7), pp. 833-843Greenberg, S., Marquardt, N., Ballendat, T., Diaz-Marino, R., Wang, M., Proxemic interactions: The new ubicomp? (2011) Interactions, 18 (1), pp. 42-50. , JanuaryPederson, T., Towards an activity-aware wearable computing platform based on an egocentric interaction model (2007) UCS 07 Proceedings of the 4th International Conference on Ubiquitous Computing Systems, pp. 211-227Cook, D.J., Das, S.K., How smart are our environments? An updated look at the state of the art (2007) Pervasive and Mobile Computing, 3, pp. 53-73Rhodes, B.J., Minar, N., Weaver, J., Wearable computing meets ubiquitous computing: Reaping the best of both worlds (1999) Wearable Computers, 1999, pp. 141-149. , Digest of Papers. the Third International Symposium onCarrino, S., Mugellini, E., Abou Khaled, O., Ingold, R., ARAMIS: Toward a hybrid approach for human-environment interaction (2011) 14th International Conference on Human-computer Interaction, , HCI International Orlando, FL, USA, 09-14 July 11Rehman, K., Stajano, F., Coulouris, G., Interfacing with the invisible computer (2002) Proceedings of the Second Nordic Conference on Human-computer Interaction - NordiCHI '02, 213Mitra, S., Acharya, T., Gesture recognition: A survey (2007) IEEE Transactions on Systems, Man and Cybernetics, Part C (Applications and Reviews), 37, pp. 311-324Wobbrock, J.O., Wilson, A.D., Li, Y., Gestures without libraries, toolkits or training: A $1 recognizer for user interface prototypes (2007) Proceedings of the 20th Annual ACM Symposium on User Interface Software and Technology - UIST '07, 159Elmezain, M., Al-Hamadi, A., A hidden Markov model-based isolated and meaningful hand gesture recognition (2008) Engineering and Technology, 31, pp. 394-401Yuan, X., Wang, Y., SVM based adaptive inverse controller for excitation control (2007) Advances in Neural Networks-ISNN 2007, pp. 469-478Nauck, D., Klawonn, F., Kruse, R., (1997) Foundations of Neuro-fuzzy Systems, , John Wiley & Sons, Inc. New York, NY, USAMitra, S., Hayashi, Y., Neuro-fuzzy rule generation: Survey in soft computing framework (2000) IEEE Transactions on Neural Networks a Publication of the IEEE Neural Networks Council, 11, pp. 748-768Crevoisier, A., Polotti, P., Tangible acoustic interfaces and their applications for the design of new musical instruments (2005) Proceedings of the 2005 Conference on New Interfaces for Musical Expression, pp. 97-100. , National University of SingaporeCastle, R.O., Klein, G., Murray, D.W., Combining monoSLAM with object recognition for scene augmentation using a wearable camera (2010) Image and Vision Computing, 28, pp. 1548-1556Castle, R.O., Murray, D.W., Object recognition and localization while tracking and mapping (2009) 2009 8th IEEE International Symposium on Mixed and Augmented Reality, pp. 179-180Römer, K., Time synchronization in ad hoc networks Proceedings of the 2nd ACM International Symposium on Mobile Ad Hoc Networking & Computing (MobiHoc '01), pp. 173-182. , ACM, New York, NY, USAKaram, M., (2006) A Framework for Research and Design of Gesture-based Human Computer Interactions, , Thesis. Southampton: University of Southampto