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1. Performance Analysis of Matrix Multiplication for Deep Learning on the Edge

Author

Ramírez, Cristian, Castelló, Adrián, Martínez, Héctor, and Quintana-Ortí, Enrique S.

Subjects
Computer Science - Hardware Architecture
Abstract

The devices designed for the Internet-of-Things encompass a large variety of distinct processor architectures, forming a highly heterogeneous zoo. In order to tackle this, we employ a simulator to estimate the performance of the matrix-matrix multiplication (GEMM) kernel on processors designed to operate at the edge. Our simulator adheres to the modern implementations of GEMM, advocated by GotoBLAS2, BLIS, OpenBLAS, etc., to carefully account for the amount of data transfers across the memory hierarchy of different algorithmic variants of the kernel. %Armed with this tool, A small collection of experiments provide the necessary data to calibrate the simulator and deliver highly accurate estimations of the execution time for a given processor architecture., Comment: 12 pages, 2 Tables, 6 Figures

Published
2024
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4. Performance Analysis of Convolution Algorithms for Deep Learning on Edge Processors

Author

Alonso-Jordá, Pedro, Martínez, Héctor, Quintana-Ortí, Enrique S., Ramírez, Cristian, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Wyrzykowski, Roman, editor, Dongarra, Jack, editor, Deelman, Ewa, editor, and Karczewski, Konrad, editor

Published
2023
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5. Silver Benzoate Facilitates the Copper-Catalyzed C–N Coupling of Iodoazoles with Aromatic Nitrogen Heterocycles

Author

Lozano, Cedric, Ramirez, Cristian, Sin, Ny, Viart, Hélène M-F, Prusiner, Stanley B, Paras, Nick A, and Conrad, Jay

Subjects
Chemical Engineering, Materials Engineering
Abstract

In the literature, C-N coupling methods for the reaction of iodo-oxazole with 2-pyridinone were found to be low yielding. C-N coupling using silver benzoate additives with CuI catalysts and 4,7-dimethoxy-1,10-phenanthroline ligands has been developed to afford synthetically useful yields of the desired heterobicycle product. The reaction conditions are applied to the coupling of a range of iodo-heterocycles with 2-pyridinone. The coupling of a variety of NH-containing heterocycles with 4-iodo-oxazole is also demonstrated. The use of 2-, 4-, or 5-iodo-oxazole allows for the coupling of pyridinone to each oxazole position.

Published
2021

7. Performance Analysis of Matrix Multiplication for Deep Learning on the Edge

Author

Ramírez, Cristian, Castelló, Adrián, Martínez, Héctor, Quintana-Ortí, Enrique S., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Anzt, Hartwig, editor, Bienz, Amanda, editor, Luszczek, Piotr, editor, and Baboulin, Marc, editor

Published
2022
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10. Dispersion-Controlled Regioselective Acid-Catalyzed Intramolecular Hydroindolation of cis-Methindolylstyrenes To Access Tetrahydrobenzo[cd]indoles

Author

Cai, Xiao, Tohti, Anargul, Ramirez, Cristian, Harb, Hassan, Fettinger, James C, Hratchian, Hrant P, and Stokes, Benjamin J

Subjects
Chemical Sciences, Organic Chemistry
Abstract

Readily prepared cis-β-(α',α'-dimethyl)-4'-methindolylstyrenes undergo acid-catalyzed intramolecular hydroindolation to afford tetrahydrobenzo[ cd]indoles. Our experimental and computational investigations suggest that dispersive interactions between the indole and styrene preorganize substrates such that 6-membered ring formation is preferred, apparently via concerted protonation and C-C bond formation. When dispersion is attenuated (by a substituent or heteroatom), regioselectivity erodes and competing oligomerization predominates for cis substrates. Similarly, all trans-configured substrates that we evaluated failed to cyclize efficiently.

Published
2019

11. Dispersion-Controlled Regioselective Acid-Catalyzed Intramolecular Hydroarylation of cis-Methindolylstyrenes to Access Tetrahydrobenzo[cd]indoles

Author

Cai, Xiao, Tohti, Anargul, Ramirez, Cristian, Harb, Hassan, Hratchian, Hrant, and Stokes, Ben

Abstract

Readily prepared cis-β-(α’,α’-dimethyl)-4’-methindolylstyrenes undergo Brønsted acid-catalyzed intramolecular hydroarylation to afford a variety of 3-aryl-5,5-dimethyl-1,3,4,5-tetrahydrobenzo[cd]indoles. Our experimental and computational investigations suggest that dispersive interactions between the indole and styrene preorganize substrates such that 6-membered ring formation occurs via a concerted hydroarylation step. When dispersability is attenuated (by a substituent or heteroatom), regioselectivity erodes and competing oligomerization predominates for cis substrates; all trans-configured substrates that we evaluated failed to cyclize efficiently.

Published
2018

14. Design of a Low-Cost Ball and Plate Prototype for Control Education

Author

Ramirez, Cristian, Hurtado, Paula, Sanabria, Cristian, Ramirez, Kevin, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Martínez, Alexánder, editor, Moreno, Héctor A., editor, Carrera, Isela G., editor, Campos, Alexandre, editor, and Baca, José, editor

Published
2020
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16. SHREC 2020: 3D point cloud semantic segmentation for street scenes

Author

Ku, Tao, Veltkamp, Remco C., Boom, Bas, Duque-Arias, David, Velasco-Forero, Santiago, Deschaud, Jean-Emmanuel, Goulette, Francois, Marcotegui, Beatriz, Ortega, Sebastián, Trujillo, Agustín, Suárez, José Pablo, Santana, José Miguel, Ramírez, Cristian, Akadas, Kiran, and Gangisetty, Shankar

Published
2020
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23. Evaluación ex-post del proyecto de riego tecnificado para la diversificación agrícola en la comunidad de San José de Chazo, cantón Guano, año 2022

Author

López Valverde, Edison Israel, primary, Román Robalin, Daniel Arturo, additional, Santiago Tapia Ramirez, Cristian, additional, Antonio Muñoz Jácome, Eduardo, additional, Guilcapi-Pacheco, Edmundo Danilo, additional, González Valdez, Karla Milena, additional, and Granja Guato, David Fernando, additional

Published
2023
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32. Forecasting Cash Demand in ATM Using Neural Networks and Least Square Support Vector Machine

Author

Ramírez, Cristián, Acuña, Gonzalo, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, San Martin, César, editor, and Kim, Sang-Woon, editor

Published
2011
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35. Desarrollo del prototipo de una aplicación web para la reservación y compra de alimentos en restaurantes cercanos usando geolocalización: caso de estudio barrio Marly de Bogotá.

Author

Navarro Beltrán, Juan Carlos / Asesor, Avendaño Ramirez, Cristian Fernando, Barrera Gonzalez, Juan Pablo, Navarro Beltrán, Juan Carlos / Asesor, Avendaño Ramirez, Cristian Fernando, and Barrera Gonzalez, Juan Pablo

Abstract

La gastronomía ha sido uno los sectores del mercado más afectados por la aparición del COVID-19, hasta el punto de llegar a la quiebra absoluta. Muchos de los que hasta el momento han sobrevivido, ha sido gracias al uso de servicios de domicilio o a la transformación digital, integrada en el modelo de negocio. Según cifras del DANE en su encuesta mensual de servicios, la categoría de restaurantes, catering y bares aún continua con un déficit de ingresos totales del - 16,1 % además de esto ha tenido uno de los mayores porcentajes de déficit de ingresos en comparación con otros servicios con un porcentaje de -62,2 % reportado en el mes de abril de 2020.1 Teniendo en cuenta esto, existe un problema serio en cuanto a este sector, muchos de los restaurantes son microempresas o pymes, cuyos ingresos dependen del día a día de la prestación del servicio. Al no poder estar activos al máximo de su capacidad, muchos de estos han tenido que cerrar sus servicios con la garantía de poder recuperar algunos ingresos o por el simple hecho de generar más perdidas estando disponible que declarándose en bancarrota. Con la definición del problema anterior junto con la elaboración de este proyecto, se ha podido realizar un primer paso, desarrollando un prototipo de una aplicación web progresiva que pretende responder a los problemas de aglomeraciones, permitiendo realizar la compra y venta de alimentos, mediante el servicio de reservación, reduciendo los tiempos de espera, y teniendo control de los usuarios, que utilicen los servicios de los restaurantes, además de esto, con ayuda del servicio de geolocalización permite a los usuarios tener presente los establecimientos que sean cercanos a su posición. El flujo de desarrollo de este proyecto ha sido divido en 3 fases, en la primera se define los requerimientos funcionales y no funcionales donde se describen las tecnologías a utilizar, como segunda fase se define el diseño del ecosistema del aplicativo, del lado del cliente como del servi

Published
2022

36. Three Essays on Non-Monetary Incentives and Employee Compensation

Author

Ramirez, Cristian

Subjects
Management
Abstract

Scholars in strategy, organizational behavior, and economics have shown increasing interest in the link between non-monetary, extrinsic incentives and employee productivity. However, nearly all of this research examines rewards that have some kind of social recognition mechanism. In the first chapter of my dissertation, I examine the awarding of private, non-monetary badges for hitting performance targets. On Amazon Mechanical Turk, workers receiving this type of badge upon hitting a performance threshold are approximately 9.4 percent more productive than workers in the control group. Interestingly, this increase in productivity was almost the exact same as giving workers hitting the threshold a 20 percent bonus in pay. The second chapter of my dissertation presents the analysis of an actual incentive scheme that has a unique characteristic: it combines both symbolic and pecuniary incentives under the same platform. By examining the results of this real-life application, I can estimate the extent to which workers respond to an actual application of gamification and how its impact varies over time. Understanding the determinants of value captured by different stakeholders is a key issue for both practitioners and scholars in strategic management. The final chapter of my dissertation presents a study on variations in worker compensation in the copper mining industry. Our results show that there is a positive effect of copper price on workers' compensation, but this effect is moderated by the characteristics of labor regulation in each country.

Published
2017

37. Cuantificación de la saltabilidad por funciones de juego en voleibol del campeonato nacional juvenil masculino de la Federación Colombiana de Voleibol octubre 2022

Author

Osorio Londoño, César Augusto, Marín Ramirez , Cristian Felipe, and García García , Luis Guillermo

Subjects
Saque - Voleibol, 790 - Deportes, juegos y entretenimiento::796 - Deportes y juegos al aire libre y deportivos, Educación física, Funciones - Voleibol, Voleibol - Juegos de pelota, Saltos - Voleibol, Ciencias del deporte
Abstract

El voleibol es una disciplina deportiva donde se realizan acciones acíclicas que requieren una gran capacidad de reacción y una rápida velocidad de ejecución, por lo tanto, los saltos son frecuentes en acciones defensivas y ofensivas, de tal manera la capacidad de salto del sujeto influye en cuál será su posición dentro del juego, resaltando la importancia de cuantificar los saltos por función. Este estudio toma relevancia ya que existe información limitada en el mundo académico sobre la cuantificación de la saltabilidad por funciones de juego en el voleibol. Es una investigación de tipo observacional descriptivo y responde a un diseño cuantitativo donde se determinará la cantidad de saltos por función de juego en el Campeonato Nacional de Voleibol Juvenil Masculino de la Federación Colombiana de Voleibol octubre 2022. Se cuantifican los saltos de 136 atletas de la categoría juvenil masculino entre 17 y 19 años, 10 equipos representantes de 9 departamentos de Colombia durante 29 partidos oficiales a lo largo de 103 sets jugados en el Campeonato. En el Campeonato Nacional Juvenil Masculino de la Federación Colombiana de Voleibol en total se realizaron 15.410 saltos durante los 5 días de competencia, siendo los jugadores centrales quienes se caracterizaron por acumular mayor número de saltos durante el campeonato comparado con las demás funciones de juego. Tanto en el equipo con mayor y menor cuantificación de saltos, la posición de juego opuestos registra menor medición de saltos. El departamento de Risaralda ocupó el primer lugar dentro del campeonato y fue quien se destacó por tener mayor cuantificación de saltos. La acción de bloqueo fue la que más sumó en la cuantificación general de los deportistas del Campeonato Nacional Juvenil Masculino de la Federación de Voleibol Colombiana. Se recomienda realizar más investigaciones enfocadas en la cuantificación de saltos en jugadores de voleibol de diferentes categorías para reducir la escasez de conocimiento en el mundo académico y deportivo. Volleyball is a sports discipline where acyclic actions are carried out that require a great reaction capacity and a fast speed of execution, therefore, jumps are frequent in defensive and offensive actions, in such a way that the subject's jumping capacity influences what their position will be in the game, highlighting the importance of quantifying the jumps by function. This study is relevant since there is limited information in the academic world on the quantification of jump ability by game functions in volleyball. It is descriptive observational research and responds to a quantitative design where the number of jumps by the memyunction will be determined in the Men's Youth Volleyball National Championship of the Colombian Volleyball Federation in October 2022. The jumps of 136 athletes from the Colombian Volleyball Federation are quantified. youth male category between 17 and 19 years old, 10 teams representing 9 departments of Colombia during 29 official matches throughout 103 sets played in the Championship. In the National Youth Men's Championship of the Colombian Volleyball Federation, a total of 15,410 jumps were made during the 5 days of competition, being the central players who were characterized by accumulating a greater number of jumps during the championship compared to the other game functions. Both in the team with the highest and lowest quantification of jumps, the opposite game position registers the lowest measurement of jumps. The department of Risaralda ranked first in the championship and was the one that stood out for having the highest number of jumps. The blocking action was the one that added the most in the general quantification of the athletes of the National Youth Men's Championship of the Colombian Volleyball Federation. It is recommended to carry out more research focused on the quantification of jumps in volleyball players of different categories to reduce the lack of knowledge in the academic and sports world. Pregrado Profesional en Ciencias del Deporte y la Recreación TABLA DE CONTENIDO 1. 7 2. 8 3. 9 3.1 9 3.2 9 4. 10 4.1 10 Historia del Voleibol 10 A. Base estructural y organizativa del voleibol (1895 – 1924) 10 B. Inicio del voleibol (1925 – 1939) 11 C. Novedades tácticas (1940-1949) 11 D. Potencia en el voleibol (1950-1959) 11 E. Voleibol olímpico, escuela europea VS escuela asiática. (1960-1969) 12 F. Consolidación del juego asiático (1970-1979). 12 G. Especialización por funciones (1980-1989). 12 H. Búsqueda del voleibol espectáculo (1990-2000). 13 Voleibol en Colombia 14 Ley 181 del 18 enero de 1995 14 Decreto Ley 1228 16 Categorías 17 4.2 19 Tipos de salto 20 ● 20 ● 20 ● 21 Fuerza en el salto vertical 21 Fundamentos técnicos 22 Saque en el voleibol 22 Bloqueo en el voleibol 23 Ataque en el voleibol 23 Posiciones de juego 25 Levantador, armador o colocador (1) 25 Auxiliares o puntas (2) 26 Centrales (2) 26 Opuesto (1) 27 Libero (1) 27 4.3 MARCO DE ANTECEDENTES INVESTIGATIVOS 30 5. 36 5.1 36 5.2 36 5.3 37 5.4 38 5.6 TALENTO HUMANO 38 6. 40 6.1 Saltos totales de la categoría juvenil masculino de la Federación Colombiana de Voleibol 2022 41 6.2 Saltos totales por posición de juego de la categoría juvenil masculino de la Federación Colombiana de Voleibol 43 6.3 Saltos por posición de juego de la categoría juvenil masculino de la Federación Colombiana de Voleibol 49 6.4 Correlaciones saltos totales por posición de juego de la categoría juvenil masculino de la federación Colombiana de Voleibol 57 6.5 Tipos de saltos por departamento de la categoría juvenil masculino de la Federación Colombiana de Voleibol 60 6.6 Total tipo de salto por departamento de la categoría juvenil masculino de la Federación Colombiana de Voleibol 76 6.7 Correlaciones tipo de salto por departamento de la categoría juvenil masculino de la federación Colombiana de Voleibol 78 7. 79 8. 81 BIBLIOGRAFÍA 83

Published
2022

39. Sand Consolidation Treatment: Durability in an Alternative Primary Sand Control Method for a Marginal Reservoir

Author

Kueh, Jing Zhi, additional, Tan, Kok Liang, additional, Dev, Daevin, additional, Thamilarasu, Mohana Ramanee, additional, Abd Wahab, Syafiqa, additional, Riyanto, Latief, additional, Hashim, Saharul, additional, Balasandran, Anandhadhasan, additional, Kristanto, Tutus, additional, Ramirez, Cristian, additional, and Chen, Yee Choy, additional

Published
2022
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43. Malaysia's First Successful Implementation of Sand Consolidation Technology as a Primary Sand Control Method Executed during the Drilling Phase: Success Story and Lessons Learned

Author

Kamaruddin, Nadiah, additional, A Karim, Nurfuzaini, additional, Hasmin, M Ariff Naufal, additional, Bela, Sunanda Magna, additional, Riyanto, Latief, additional, Samuel, Orient Balbir, additional, M Jeffry, Suzanna Juyanty, additional, Hashim, Saharul, additional, Balasandran, Anandhadhasan, additional, Ramirez, Cristian, additional, and Mohan, Ragupathy, additional

Published
2021
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47. Assessing the Enzymatic Hydrolysis of Salmon Frame Proteins through Different By-Product/Water Ratios and pH Regimes

Author

Valencia, Pedro, Valdivia, Silvana, Nuñez, Suleivys, Ovissipour, Reza, Pinto, Marlene, Ramirez, Cristian, Perez, Alvaro, Ruz, Manuel, Garcia, Paula, Jimenez, Paula, Almonacid, Sergio, Valencia, Pedro, Valdivia, Silvana, Nuñez, Suleivys, Ovissipour, Reza, Pinto, Marlene, Ramirez, Cristian, Perez, Alvaro, Ruz, Manuel, Garcia, Paula, Jimenez, Paula, and Almonacid, Sergio

Abstract

The enzymatic hydrolysis of fish by-product proteins is traditionally carried out by mixing ground by-products with water. In addition, pH control is used to avoid pH drops. Higher costs are involved due to the use of pH control systems and the consequent energy cost in the drying stage. This work aimed to evaluate the effect of these conditions on the hydrolysis of salmon frame (SF) proteins, including the SF hydrolysis without added water. SF hydrolysis by subtilisin at 50, 75, and 100% SF under different pH regimes were evaluated by released α-amino (α-NH) groups, total nitrogen, degree of hydrolysis, and estimated peptide chain length (PCL) at 55 °C. The concentration of released α-NH groups was higher in the conditions with less added water. However, the nitrogen recovery decreased from 50 to 24% at 50 and 100% SF, respectively. Changing the SF/water ratio had a more significant effect than changing the pH regime. Estimated PCL changed from 5–7 to 7–9 at 50 and 100% SF, respectively. The operating conditions affected the hydrolysis performance and the molecular characteristics of the hydrolysate.

Published
2021
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48. Suplementación inverno-primaveral de vaquillonas con Biosalt 500

Author

Pueyo, Joaquin Dante, Ramirez, Cristian Ariel, and Alvarez, Claudio Arnoldo

Subjects
Heifers, Biosalt 500, Suplementos, Ganado Bovino, Novilla, Alimentación de los Animales, Cattle, Animal Feeding, Supplements, Vaquillonas
Abstract

La época de destete en nuestra región coincide generalmente con la llegada del invierno. Como el principal recurso forrajero son las pasturas (para el caso de recría principalmente pasturas implantadas), y estas tienen una marcada estacionalidad estival, es que una de las prácticas que se utilizan es la clausura de potreros o reserva de forraje en pie para el período invernal. La limitante de este forraje diferido es su baja calidad, en especial en lo que tiene que ver con la digestibilidad y el contenido proteico del mismo. EEA El Colorado Fil: Pueyo, Joaquin Dante. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria El Colorado; Argentina Fil: Ramirez, Cristian Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria El Colorado; Argentina Fil: Alvarez, Claudio Arnoldo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria El Colorado; Argentina

Published
2021

49. La salida de campo como estrategia que posibilita el análisis de la calidad del agua del Río Frío en el municipio de Campoalegre - Huila para fomentar actitudes de conservación.

Author

Suaza Ramirez, Luis Fernando and Suaza Ramirez, Cristian Felipe

Subjects
STUDENT attitudes, WATER quality, WATER supply, ENVIRONMENTAL education, INVERTEBRATES
Abstract

Copyright of Bio-grafía. Escritos Sobre la Biología y su Enseñanza is the property of Universidad Pedaggica Nacional and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2022

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