805 results on '"Silva-García, A."'
Search Results
802. Teoría y aplicaciones del clasificador asociativo gamma
- Author
-
López Yáñez, Itzamá, Yáñez Márquez, Cornelio, and Silva García, Víctor Manuel
- Subjects
Image processing (Digital techniques) ,Pattern recognition systems (Data processing) - Abstract
En este documento se presentan las bases teóricas que sustentan el funcionamiento del clasificador Gamma, mismo que pertenece al enfoque asociativo de clasificaciónde patrones y fue introducido por el autor en su tesis de maestría. Asimismo, sepresentan diversas aplicaciones de este clasificador a diferentes campos del conocimiento humano. Se incluye también la caracterización del funcionamiento del clasificador, permitiendo identificar condiciones suficientes para clasificación correcta del conjunto fundamental completo. Además, se presenta un estudio experimental del desempeño del clasificador propuesto, comparando su rendimiento de clasificación con el exhibido por otros clasificadores, al trabajar con diversas bases de datos de acceso público. // In the current document of thesis, the theoretical concepts which make up the basisof the Gamma classifier are presented. The Gamma classifier is a member of the associative approach to pattern recognition and was introduced by the author in hisMaster thesis. Several applications of this classifier to different fields of human knowledge are included too. The characterization of the classifier operation is also presented. This allows the identification of sufficient conditions for correct classification of the whole fundamental set. An experimental study of the proposed classifier performance is presented. In this study, the performance of the Gamma classifier is compared to that exhibited by other classifiers, while working with different data bases of public domain.
- Published
- 2011
803. Campos finitos JV en el conjunto de las permutaciones: una aplicación a la criptografía
- Author
-
Flores Carapia, Rolando, Silva García, Víctor Manuel, and Yáñez Márquez, Cornelio
- Subjects
Computer security ,Cryptography - Abstract
Esta tesis trata sobre criptografía. Específicamente, en este trabajo de tesis se propone, enuncia y demuestra el teorema JV, y se toma como base teórica para construir campos finitos en el conjunto de las permutaciones, los cuales se aplican en la construcción de criptosistemas; además, se propone, enuncia y demuestra el Teorema Factorial. Los teoremas JV y Factorial constituyen la base teórica para implementar un nuevo algoritmo de cifrado: el Criptosistema Factorial. Los criptosistemas diseñados, implementados y aplicados en este trabajo de tesis son competitivos con la norma internacional AES y una de sus aplicaciones principales es el reforzamiento de algoritmos criptográficos conocidos, como el DES y el TripleDES. Primeramente se propone, enuncia y demuestra el Teorema JV. Acto seguido, se definen dos operaciones binarias y una operación unaria a fin de construir campos finitos en el conjunto de las permutaciones, tomando como base teórica el Teorema JV. Luego, se propone, enuncia y demuestra el Teorema Factorial, el cual sirve como base teórica, juto con el Teorema JV, para proponer e implementar el algoritmo del Criptosistema Factorial. Se realiza un análisis de la forma en que se fortalecen los criptosistemas simétricos DES y Triple-DES al aplicar los resultados de esta tesis y se implementa este fortalecimiento; además, se usa como base el Teorema Factorial en el cifrado de cadenas de 192 bits. Finalmente, se diseña una aplicación donde se usan los resultados originales de este trabajo de tesis en el envío de cheques electrónicos cifrados mediante el algoritmo TripleDES con permutación variable. // This thesis deals specifically with cryptography. This work proposes, formulates and demonstrates the JV theorem taken as a theoretical base to construct finite fields in a group of permutations which are applied in the construction of crypto-systems. It is also proposes formulating and demonstrating the factorial theorem. Factorial and JV theorem constitute the theoretical base to implement a new coded algorithm: the factorial crypto-system. The crypto-systems designed, implemented and applied in this thesis are competitive with the international AES norm, and one of their principal applications is the re-enforcement of known cryptographic algorithms such as DES and triple DES. First, the formulation and demonstration of the JV theorem is proposed. Then two binary and one unary operations are defined with the aim to construct finite fields in a group of permutations taken the JV theorem as theoretical base. Next, formulating and demonstrating the factorial theorem is proposed, which serves as a theoretical base, together with the JV theorem, to propose and implement the factorial crypto-system algorithm. An analysis is made of the form to strengthen the DES and triple DES symmetrical crypto-system, apply the thesis results and implement this strengthening. Also the factorial theorem is used as a base in decoding chains of 192 bits. Finally, an application to use the original results of this thesis is designed for sending coded electronic checks through the triple DES algorithm with a variable permutation.
- Published
- 2011
804. Implantación del programa 5S en un area productiva
- Author
-
Charry Barrios, Natalia and Silva García, Rodrigo
- Subjects
Cementos del Valle S.A ,Clima organizacional ,Productividad del trabajo ,Cinco Eses ,Ingeniería Industrial - Abstract
En nuestro país se está haciendo común mantener las organizaciones actualizadas y proyectadas al futuro, es una necesidad de la alta dirección, mas aún cuando en sus procesos no figura la competitividad, los servicios no están diseñados con la participación de sus usuarios y entendiendo que las nuevas realidades les exige ser organizaciones eficientes, que tienen que gerenciar costos, mejorar continuamente los servicios y productos, competir con otras industrias y captar la preferencia de los diferentes usuarios. Esto ha hecho entender que es necesario un cambio de pensamiento, un cambio de la forma de “hacer las cosas” que permita enfrentar exitosamente el nuevo entorno. Se propone, contribuir al desarrollo de la capacidad de las personas que conforman el Área de Clinkerización y Grúas en Cementos del Valle para enfrentarse a un cambio y ser participes del mismo, mediante un aprendizaje permanente tanto individual como colectivo, garantizando el que la empresa se convierta en un espacio para el aprendizaje continuo. La empresa Cementos del Valle, con una orientación de gestión integral hacia la calidad a través del Proceso Conquistador Siglo XXI (PCSXXI), buscando la congruencia entre el pensamiento y el hacer durante los procesos del trabajo Pasantía (Ingeniero Industrial)-- Universidad Autónoma de Occidente, 2000 Pregrado Ingeniero(a) Industrial
- Published
- 2000
805. [Third National Ovarian Consensus. 2011. Grupo de Investigación en Cáncer de Ovario y Tumores Ginecológicos de México "GICOM"].
- Author
-
Gallardo-Rincón D, Cantú-de-León D, Alanís-López P, Alvarez-Avitia MA, Bañuelos-Flores J, Herbert-Núñez GS, Oñate-Ocaña LF, Pérez-Montiel MD, Rodríguez-Trejo A, Ruvalcaba-Limón E, Serrano-Olvera A, Ortega-Rojo A, Cortés-Esteban P, Erazo-Valle A, Gerson-Cwilich R, De-la-Garza-Salazar J, Green-Renner D, León-Rodríguez E, Morales-Vásquez F, Poveda-Velasco A, Aguilar-Ponce JL, Alva-López LF, Alvarado-Aguilar S, Alvarado-Cabrero I, Aquino-Mendoza CA, Aranda-Flores CE, Bandera-Delgado A, Barragán-Curiel E, Barrón-Rodríguez P, Brom-Valladares R, Cabrera-Galeana PA, Calderillo-Ruiz G, Camacho-Gutiérrez S, Capdeville-García D, Cárdenas-Sánchez J, Carlón-Zárate E, Carrillo-Garibaldi O, Castorena-Roji G, Cervantes-Sánchez G, Coronel-Martínez JA, Chanona-Vilchis JG, Díaz-Hernández V, Escudero-de-los Ríos P, Garibay-Cerdenares O, Gómez-García E, Herrera-Montalvo LA, Hinojosa-García LM, Isla-Ortiz D, Jiménez-López J, Lavín-Lozano AJ, Limón-Rodriguez JA, López-Basave HN, López-García SC, Maffuz-Aziz A, Martínez-Cedillo J, Martínez-López DM, Medina-Castro JM, Melo-Martínez C, Méndez-Herrera C, Montalvo-Esquivel G, Morales-Palomares MA, Morán-Mendoza A, Morgan-Villela G, Mota-García A, Muñoz-González DE, Ochoa-Carrillo FJ, Pérez-Amador M, Recinos-Money E, Rivera-Rivera S, Robles Flores JU, Rojas-Castillo E, Rojas-Marín C, Salas-Gonzáles E, Sámano-Nateras L, Santibañez-Andrade M, Santillán-Gómez A, Silva-García A, Silva JA, Solorza-Luna G, Tabarez-Ortiz AR, Talamás-Rohana P, Tirado-Gómez LL, Torres-Lobatón A, and Quijano-Castro F
- Subjects
- Aftercare, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Chemotherapy, Adjuvant, Combined Modality Therapy, Drug Resistance, Neoplasm, Early Diagnosis, Female, Genes, Neoplasm, Humans, Laparoscopy, Lymph Node Excision, Neoadjuvant Therapy, Neoplasm Staging standards, Neoplastic Syndromes, Hereditary genetics, Omentum surgery, Organoplatinum Compounds administration & dosage, Ovariectomy methods, Palliative Care, Quality of Life, Radiotherapy, Adjuvant, Salvage Therapy, Taxoids administration & dosage, Ovarian Neoplasms diagnosis, Ovarian Neoplasms epidemiology, Ovarian Neoplasms genetics, Ovarian Neoplasms pathology, Ovarian Neoplasms therapy
- Abstract
Introduction: Ovarian cancer (OC) is the third most common gynecologic malignancy worldwide. Most of cases it is of epithelial origin. At the present time there is not a standardized screening method, which makes difficult the early diagnosis. The 5-year survival is 90% for early stages, however most cases present at advanced stages, which have a 5-year survival of only 5-20%. GICOM collaborative group, under the auspice of different institutions, have made the following consensus in order to make recommendations for the diagnosis and management regarding to this neoplasia., Material and Methods: The following recommendations were made by independent professionals in the field of Gynecologic Oncology, questions and statements were based on a comprehensive and systematic review of literature. It took place in the context of a meeting of two days in which a debate was held. These statements are the conclusions reached by agreement of the participant members., Results: No screening method is recommended at the time for the detection of early lesions of ovarian cancer in general population. Staging is surgical, according to FIGO. In regards to the pre-surgery evaluation of the patient, it is recommended to perform chest radiography and CT scan of abdomen and pelvis with IV contrast. According to the histopathology of the tumor, in order to consider it as borderline, the minimum percentage of proliferative component must be 10% of tumor's surface. The recommended standardized treatment includes primary surgery for diagnosis, staging and cytoreduction, followed by adjuvant chemotherapy Surgery must be performed by an Oncologist Gynecologist or an Oncologist Surgeon because inadequate surgery performed by another specialist has been reported in 75% of cases. In regards to surgery it is recommended to perform total omentectomy since subclinic metastasis have been documented in 10-30% of all cases, and systematic limphadenectomy, necessary to be able to obtain an adequate surgical staging. Fertility-sparing surgery will be performed in certain cases, the procedure should include a detailed inspection of the contralateral ovary and also negative for malignancy omentum and ovary biopsy. Until now, laparoscopy for diagnostic-staging surgery is not well known as a recommended method. The recommended chemotherapy is based on platin and taxanes for 6 cycles, except in Stage IA, IB and grade 1, which have a good prognosis. In advanced stages, primary cytoreduction is recommended as initial treatment. Minimal invasion surgery is not a recommended procedure for the treatment of advanced ovarian cancer. Radiotherapy can be used to palliate symptoms. Follow up of the patients every 2-4 months for 2 years, every 3-6 months for 3 years and anually after the 5th year is recommended. Evaluation of quality of life of the patient must be done periodically., Conclusions: In the present, there is not a standardized screening method. Diagnosis in early stages means a better survival. Standardized treatment includes primary surgery with the objective to perform an optimal cytoreduction followed by chemotherapy Treatment must be individualized according to each patient. Radiotherapy can be indicated to palliate symptoms.
- Published
- 2011
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.