On a stronger reconstruction notion for monoids and clones

Motivated by reconstruction results by Rubin, we introduce a new reconstruction notion for permutation groups, transformation monoids and clones, called automatic action compatibility, which entails automatic homeomorphicity. We further give a characterization of automatic homeomorphicity for transformation monoids on arbitrary carriers with a dense group of invertibles having automatic homeomorphicity. We then show how to lift automatic action compatibility from groups to monoids and from monoids to clones under fairly weak assumptions. We finally employ these theorems to get automatic action compatibility results for monoids and clones over several well-known countable structures, including the strictly ordered rationals, the directed and undirected version of the random graph, the random tournament and bipartite graph, the generic strictly ordered set, and the directed and undirected versions of the universal homogeneous Henson graphs.Comment: 29 pp; Changes v1-->v2::typos corr.|L3.5+pf extended|Rem3.7 added|C. Pech found out that arg of L5.3-v1 solved Probl2-v1|L5.3, C5.4, Probl2 of v1 removed|C5.2, R5.4 new, contain parts of pf of L5.3-v1|L5.2-v1 is now L5.3,merged with concl of C5.4-v1,L5.3-v2 extends C5.4-v1|abstract, intro updated|ref[24] added|part of L5.3-v1 is L2.1(e)-v2, another part merged with pf of L5.2-v1 => L5.3-v

The number of clones determined by disjunctions of unary relations

We consider finitary relations (also known as crosses) that are definable via finite disjunctions of unary relations, i.e. subsets, taken from a fixed finite parameter set $\Gamma$. We prove that whenever $\Gamma$ contains at least one non-empty relation distinct from the full carrier set, there is a countably infinite number of polymorphism clones determined by relations that are disjunctively definable from $\Gamma$. Finally, we extend our result to finitely related polymorphism clones and countably infinite sets $\Gamma$.Comment: manuscript to be published in Theory of Computing System

Reconstructing the topology on monoids and polymorphism clones of reducts of the rationals

We extend results from an earlier paper giving reconstruction results for the endomorphism monoid of the rational numbers under the strict and reflexive relations to the first order reducts of the rationals and the corresponding polymorphism clones. We also give some similar results about the coloured rationals

“HALLAZGOS RADIOLOGICOS EN LA HISTEROSALPINGOGRAFÍA EN PACIENTES CON DIAGNOSTICO DE INFERTILIDAD EN EL CENTRO MEDICO ISSEMYM ECETEPEC”

La infertilidad se define como la incapacidad de concebir un producto después de 12 meses de coito sin uso de algún método de planificación familiar. En el estudio de las pacientes diagnosticadas con infertilidad existen múltiples exploraciones radiológicas que complementan los estudios ginecológicos básicos y las determinaciones séricas.1 La Histerosalpingografía (HSG) es la evaluación radiográfica de la cavidad endometrio e indirectamente del útero, así como de las trompas de Falopio y es utilizado principalmente en la evaluación de la integridad de los mismos para la fertilidad.1 El papel de la HSG es la evaluación de la anatomía de las trompas de Falopio, específicamente la existencia de adherencias tubarias, estenosis, pólipos, dilataciones fusiformes como en el caso del hidrosalpinx y procesos inflamatorios e infecciosos. En lo que confiere a la cavidad endometrial la presencia pólipos, cambios postquirúrgicos conocidos como sinequias, y es útil en el diagnóstico de las variantes anatómicas o malformaciones congénitas uterinas.9,14 Lo anterior mencionado de gran impacto en las pacientes con diagnóstico de infertilidad, debido a esto se realiza este estudio de investigación con el fin de describir los hallazgos radiológicos frecuentes en las pacientes del CMI Ecatepec en protocolo de infertilidad

On the relationship of maximal C-clones and maximal clones

A restricted version of the Galois connection between polymorphisms and invariants, called Pol−CInv, is studied, where the invariant relations are restricted to so-called clausal relations. In this context, the relationship of maximal C-clones and maximal clones is investigated. It is shown that, with the exception of one special case occurring for Boolean domains, maximal C-clones are never maximal clones.:1 Introduction 2 Preliminaries 3 Proof of the main theorem 3.1 Principle of proof 3.2 Bounded orders 3.3 Non-trivial congruences 3.4 Selfdual functions 3.5 Quasilinear functions 3.6 Functions preserving central and h-regular relations 4 Concluding remarks ReferencesWir untersuchen eine eingeschränkte Variante der Galoisverbindung zwischen Polymorphismen und invarianten Relationen, bezeichnet mit Pol−CInv, wobei die invarianten Relationen auf sogenannte klausale Relationen beschränkt werden. In diesem Zusammenhang wird die Beziehung zwischen maximalen C-Klonen und maximalen Klonen betrachtet. Es wird gezeigt, daß, mit Ausnahme eines Spezialfalles für Boolesche Grundmengen, maximale C-Klone niemals maximale Klone sind.:1 Introduction 2 Preliminaries 3 Proof of the main theorem 3.1 Principle of proof 3.2 Bounded orders 3.3 Non-trivial congruences 3.4 Selfdual functions 3.5 Quasilinear functions 3.6 Functions preserving central and h-regular relations 4 Concluding remarks Reference

On the relationship of maximal C-clones and maximal clones

A restricted version of the Galois connection between polymorphisms and invariants, called Pol−CInv, is studied, where the invariant relations are restricted to so-called clausal relations. In this context, the relationship of maximal C-clones and maximal clones is investigated. It is shown that, with the exception of one special case occurring for Boolean domains, maximal C-clones are never maximal clones.:1 Introduction 2 Preliminaries 3 Proof of the main theorem 3.1 Principle of proof 3.2 Bounded orders 3.3 Non-trivial congruences 3.4 Selfdual functions 3.5 Quasilinear functions 3.6 Functions preserving central and h-regular relations 4 Concluding remarks ReferencesWir untersuchen eine eingeschränkte Variante der Galoisverbindung zwischen Polymorphismen und invarianten Relationen, bezeichnet mit Pol−CInv, wobei die invarianten Relationen auf sogenannte klausale Relationen beschränkt werden. In diesem Zusammenhang wird die Beziehung zwischen maximalen C-Klonen und maximalen Klonen betrachtet. Es wird gezeigt, daß, mit Ausnahme eines Spezialfalles für Boolesche Grundmengen, maximale C-Klone niemals maximale Klone sind.:1 Introduction 2 Preliminaries 3 Proof of the main theorem 3.1 Principle of proof 3.2 Bounded orders 3.3 Non-trivial congruences 3.4 Selfdual functions 3.5 Quasilinear functions 3.6 Functions preserving central and h-regular relations 4 Concluding remarks Reference

Empresa “Royal Catering"

El objetivo de presente informe monográfico es realizar un Plan de Negocios para la creación de una empresa dedicada a brindar servicios de catering en las ciudades de Tarapoto, Morales y la Banda de Shilcayo y determinar su viabilidad y factibilidad. Que consiste en proveer alimentos y bebidas para eventos empresariales, sociales, familiares, culturales, entre otros. Este rubro se fundamenta en facilitar el servicio a un cliente que busca satisfacer sus necesidades. De este modo nuestro equipo de trabajo emprendió la búsqueda de oportunidades de negocio y la identificación de nichos de mercado, centrándose en los distritos de Tarapoto, Morales y La Banda de Shilcayo; que son las ciudades donde se concentran las actividades empresariales y el movimiento comercial de la provincia e incluso de toda la región San Martin; así mismo son también lugares reconocidos por su gran variedad y riqueza gastronómica; recursos y atractivos turísticos; costumbres y tradiciones que los convierten en el escenario ideal para que nuestra empresa inicie sus actividades orientados al servicio de Catering. Sin embargo, cabe mencionar que el servicio de catering es una actividad relativamente nueva en el mercado regional; por lo cual se pretende realizar acciones intensivas y constantes de promoción y marketing con la finalidad de lograr posicionarse en la mente del consumidor, siendo reconocidos como la empresa líder en el sector.The objective of this monographic report is to carry out a Business Plan for the creation of a company dedicated to providing catering services in the cities of Tarapoto, Morales and Banda de Shilcayo and determine its viability and feasibility. That consists of providing food and drinks for business, social, family, cultural events, among others. This item is based on providing the service to a client that seeks to satisfy their needs. In this way, our team undertook the search for business opportunities and the identification of market niches, focusing on the districts of Tarapoto, Morales and La Banda de Shilcayo; which are the cities where the business activities and the commercial movement of the province and even of the entire San Martin region are concentrated; likewise they are also places recognized for their great variety and gastronomic richness; resources and tourist attractions; customs and traditions that make them the ideal setting for our company to start its activities oriented Catering service. However, it should be mentioned that the catering service is a relatively new activity in the regional market; which is why it is intended to carry out intensive and constant promotional and marketing actions in order to achieve positioning in the mind of the consumer, being recognized as the leading company in the sector.Trabajo de suficiencia profesionalAp

Particle Swarm Optimization, Genetic Algorithm and Grey Wolf Optimizer Algorithms Performance Comparative for a DC-DC Boost Converter PID Controller

[EN] Power converters are electronic devices widely applied in industry, and in recent years, for renewable energy electronic systems, they can regulate voltage levels and actuate as interfaces, however, to do so, is needed a controller. Proportional-Integral-Derivative (PID) are applied to power converters comparing output voltage versus a reference voltage to reduce and anticipate error. Using PID controllers may be complicated since must be previously tuned prior to their use. Many methods for PID controllers tunning have been proposed, from classical to metaheuristic approaches. Between the metaheuristic approaches, bio-inspired algorithms are a feasible solution; Particle Swarm Optimization (PSO) and Genetic Algorithms (GA) are often used; however, they need many initial parameters to be specified, this can lead to local solutions, and not necessarily the global optimum. In recent years, new generation metaheuristic algorithms with fewer initial parameters had been proposed. The Grey Wolf Optimizer (GWO) algorithm is based on wolves¿ herds chasing habits. In this work, a comparison between PID controllers tunning using GWO, PSO, and GA algorithms for a Boost Converter is made. The converter is modeled by state-space equations, and then the optimization of the related PID controller is made using MATLAB/Simulink software. The algorithm¿s performance is evaluated using the Root Mean Squared Error (RMSE). Results show that the proposed GWO algorithm is a feasible solution for the PID controller tunning problem for power converters since its overall performance is better than the obtained by the PSO and GA.The authors wish to thank the Institute of Energy Engineering of the Polytechnic University of Valencia, Spain, and the Department of Water and Energy Studies of the University of Guadalajara, Mexico, for all their support and collaboration.Águila-León, J.; Chiñas-Palacios, C.; Vargas-Salgado Carlos; Hurtado-Perez, E.; García, EXM. (2021). Particle Swarm Optimization, Genetic Algorithm and Grey Wolf Optimizer Algorithms Performance Comparative for a DC-DC Boost Converter PID Controller. Advances in Science, Technology and Engineering Systems Journal. 6(1):619-625. https://doi.org/10.25046/aj060167S61962561J. Aguila-Leon, C.D. Chinas-Palacios, C. Vargas-Salgado, E. Hurtado-Perez, E.X.M. Garcia, "Optimal PID Parameters Tunning for a DC-DC Boost Converter: A Performance Comparative Using Grey Wolf Optimizer, Particle Swarm Optimization and Genetic Algorithms," in 2020 IEEE Conference on Technologies for Sustainability, SusTech 2020, 2020, doi:10.1109/SusTech47890.2020.9150507.H. Sira-Ramírez, R. Silva-Ortigoza, Control Design Techniques in Power Electronic Devices, 2013, doi:10.1017/CBO9781107415324.004.G.A. Raiker, S.R. B, P.C. Ramamurthy, L. Umanand, S.G. Abines, S.G. Vasisht, "Solar PV interface to Grid-Tie Inverter with Current Referenced Boost Converter," in 2018 IEEE 13th International Conference on Industrial and Information Systems (ICIIS), IEEE: 343-348, 2018, doi:10.1109/ICIINFS.2018.8721313.S.E. Babaa, G. El Murr, F. Mohamed, S. Pamuri, "Overview of Boost Converters for Photovoltaic Systems," Journal of Power and Energy Engineering, 06(04), 16-31, 2018, doi:10.4236/jpee.2018.64002.J. Berner, K. Soltesz, T. Hägglund, K.J. Åström, "An experimental comparison of PID autotuners," Control Engineering Practice, 73, 124-133, 2018, doi:10.1016/J.CONENGPRAC.2018.01.006.K. Ogata, Modern Control Engineering, 5th ed., Prentice Hall, 2010.K. Nisi, B. Nagaraj, A. Agalya, "Tuning of a PID controller using evolutionary multi objective optimization methodologies and application to the pulp and paper industry," International Journal of Machine Learning and Cybernetics, 10(8), 2015-2025, 2019, doi:10.1007/s13042-018-0831-8.M.T. Özdemir, D. Öztürk, "Comparative performance analysis of optimal PID parameters tuning based on the optics inspired optimization methods for automatic generation control," Energies, 10(12), 2017, doi:10.3390/en10122134.G.-Q. Zeng, X.-Q. Xie, M.-R. Chen, "An Adaptive Model Predictive Load Frequency Control Method for Multi-Area Interconnected Power Systems with Photovoltaic Generations," Energies, 10(11), 1840, 2017, doi:10.3390/en10111840.Y. Sawle, S.C. Gupta, A.K. Bohre, "Optimal sizing of standalone PV/Wind/Biomass hybrid energy system using GA and PSO optimization technique," Energy Procedia, 117, 690-698, 2017, doi:10.1016/j.egypro.2017.05.183.S. Surender Reddy, C. Srinivasa Rathnam, "Optimal Power Flow using Glowworm Swarm Optimization," International Journal of Electrical Power & Energy Systems, 80, 128-139, 2016, doi:10.1016/J.IJEPES.2016.01.036.C.Y. Acevedo-arenas, A. Correcher, C. Sánchez-díaz, E. Ariza, D. Alfonso-solar, C. Vargas-salgado, J.F. Petit-suárez, "MPC for optimal dispatch of an AC-linked hybrid PV / wind / biomass / H2 system incorporating demand response," Energy Conversion and Management, 186(February), 241-257, 2019, doi:10.1016/j.enconman.2019.02.044.M. Çelebi, "Efficiency optimization of a conventional boost DC/DC converter," Electrical Engineering, 100(2), 803-809, 2018, doi:10.1007/s00202-017-0552-0.Q.Y. Lu, W. Hu, L. Zheng, Y. Min, M. Li, X.P. Li, W.C. Ge, Z.M. Wang, "Integrated coordinated optimization control of automatic generation control and automatic voltage control in regional power grids," Energies, 5(10), 3817-3834, 2012, doi:10.3390/en5103817.J. Aguila‐Leon, C. Chiñas‐Palacios, E.X.M. Garcia, C. Vargas‐Salgado, "A multimicrogrid energy management model implementing an evolutionary game‐theoretic approach," International Transactions on Electrical Energy Systems, 30(11), 2020, doi:10.1002/2050-7038.12617.Ovat Friday Aje, Anyandi Adie Josephat, "The particle swarm optimization (PSO) algorithm application - A review," Global Journal of Engineering and Technology Advances, 3(3), 001-006, 2020, doi:10.30574/gjeta.2020.3.3.0033.N.K. Jain, U. Nangia, J. Jain, A Review of Particle Swarm Optimization, Journal of The Institution of Engineers (India): Series B, 99(4), 407-411, 2018, doi:10.1007/s40031-018-0323-y.B. Hekimoǧlu, S. Ekinci, S. Kaya, "Optimal PID Controller Design of DC-DC Buck Converter using Whale Optimization Algorithm," in 2018 International Conference on Artificial Intelligence and Data Processing, IDAP 2018, Institute of Electrical and Electronics Engineers Inc., 2019, doi:10.1109/IDAP.2018.8620833.S. Mirjalili, S.M. Mirjalili, A. Lewis, "Grey Wolf Optimizer," Advances in Engineering Software, 69, 46-61, 2014, doi:10.1016/j.advengsoft.2013.12.007.S.-X. Li, J.-S. Wang, "Dynamic Modeling of Steam Condenser and Design of PI Controller Based on Grey Wolf Optimizer," Mathematical Problems in Engineering, 2015, 1-9, 2015, doi:10.1155/2015/120975.S. Yadav, S.K. Verma, S.K. Nagar, "Optimized PID Controller for Magnetic Levitation System," IFAC-PapersOnLine, 49(1), 778-782, 2016, doi:10.1016/J.IFACOL.2016.03.151.R.H.G. Tan, L.Y.H. Hoo, "DC-DC converter modeling and simulation using state space approach," 2015 IEEE Conference on Energy Conversion (CENCON), (2), 42-47, 2015, doi:10.1109/CENCON.2015.7409511

Identificación de la Funcionalidad en el Paciente Mexicano con Esclerosis Lateral Amiotrófica

Introdución: La Esclerosis Lateral Amiotrofica (ELA), es una enfermedad neurodegenerativa que afecta a la neurona motora superior e inferior . Se manifiesta con debilidad progresiva y no tiene cura, por lo que todos aquellos que la padecen mueren. Los pacientes mueren  a consecuencia de la pérdida de movimiento de los músculos respiratorios. La escala revisada de clasificación funcional de ELA es utilizada para evaluar la progresión de los síntomas y determina la perdida de habilidad para realizar actividades de la vida diaria e incrementa su estado de dependencia. Objetivos: Describir las características del paciente mexicano con ELA, así como su nivel de funcionalidad. Métodos: Un total de 14 pacientes con ELA participaron. Los datos fueron recolectados a través de una ficha de identificación y la escala revisada ALS Functional Rating Scale (ALSFRS-R). Resultados: El puntaje promedio obtenido en la ALSFRS-R fue 28.3 ± 10.3. 72% de los pacientes recibían a tención por parte de 4-5 diferentes profesionales de la salud. Conclusión: Este estudio demuestra la importancia de identificar, mediante una escala, el nivel de funcionalidad en pacientes con ELA y así proporcionar un plan de tratamiento para mantener las capacidades funcionales del paciente.   Introduction: Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease that affects the upper and lower motor neurons. It manifests with progressive weakness and has no cure. Patients die from loss of movement of the respiratory muscles. The revised functional classification scale for ALS is used to assess the progression of symptoms and determines the loss of the ability to perform activities of daily living and how dependent state increases. Objectives: To describe the characteristics of the Mexican patient with ALS, as well as their level of functionality. Methods: A total of 14 patients with ALS were enrolled. Data was collected through an identification form and the revised ALS Functional Rating Scale. Results: The mean score obtained in the ALSFRS-R was 28.3 ± 10.3. 72% of the patients received care from 4 to 5 different health professionals. Conclusion: This study demonstrates the importance to identify by means of the scale the level of function in patients with ALS and also give a treatment program to maintain the functional capabilities of the patient