¿Cómo puede una bandada de pájaros mantener su vuelo en formación con tanta elegancia y perfecta sincronización? Muchos piensan que los pájaros que van en cabeza son los que guían y los demás les siguen. Pero en realidad una bandada de pájaros no tiene líderes ni organizadores. Se organiza y coordina sin organizador. Hay también una cantidad sorprendente de otros sistemas, desde colonias de termitas hasta atascos de tráfico o sistemas económicos, que funcionan igualmente de manera descentralizada. Tortugas, termitas y atascos de tráfico describe herramientas de computación innovadoras que pueden ayudar a adultos y niños a explorar los secretos de esta interacción descentralizada de sistemas que contienen múltiples elementos. Este entendimiento permite entrenarse para poder ir también más allá de esquemas mentales centralizados. «El libro de Mitchel Resnick es uno de los pocos en el campo de la computación con un discurso interdisciplinario que puede llegar, más allá de la comunidad técnica, a filósofos, psicólogos, así como a historiadores y sociólogos de la ciencia.» Sherry Turkle, Massachusetts Institute of Technology. «Resnick da a sus estudiantes y lectores una prueba de un nuevo y vigoroso modo de pensar, en el que el todo es mucho más que la suma de las partes.» Danny Hills, Walt Disney Imagineering.Índice1. Fundamentos: Introducción. La era de la descentralización/ 2. Construcciones: Construccionismo. LEGO/Logo. StarLogo. Objetos y paralelismo/ 3.Exploraciones: Simulaciones y estimulaciones. Acrasiomicetes. Hormigas artificiales. Atascos de tráfico. Termitas. Tortugas y ranas. Ecología de tortugas. Nueva geometría de tortugas. Incendio forestal. Árboles recursivos/ 4. Reflexiones:La concepción centralizadora. Más allá de la concepción centralizadora./ 5. Proyecciones: Crecer
PREMI EUROPEU DE DIVULGACIÓ CIENTÍFICA ESTUDI GENERAL Els gens que mengem ens introdueix en el món de la biotecnologia d'aliments. Des de fa mil·lennis l'espècie humana ha fet ús dels éssers vivents no sols com a font d'alimentaicó sinó també com a agents modifcadors dels mateixos aliments. La biotecnologia actual empra les tècniques de l'enginyeria genètica per tal de modificar racionalment els organismes i millorar la qualitat i el rendiment dels processos. L'obra ens explica de forma senzilla les tècniques utilitzades al laboratori i presenta un complet panorama dels resultats obintuguts en el camp de les fermentacions, l'agricultura o la ramaderia. És una excel·lent mostra de com enfocar serenament i rigorosament el debat actual sobre els beneficis i riscs de les noves tecnologies.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Different titanium-containing hybrid mesoporous materials have been successfully synthesized from cyclopentadienyl or alkoxo titanium derivatives as titanium sources. The immobilization of the titanium complex has been carried out by grafting or tethering method in order to compare the catalytic performance of each process. Furthermore, two different capped agents have been used to silylate the support surface in order to increase the hydrophobic character of the final catalyst. In chapter 6 it would be evaluated if the choice of the capped agent employed has consequences in the activity of the catalyst in determined epoxidation reactions.Índice1. Introduction. 2. Characterization techniques. 3. Hybrid Materials. 4. Titanium-containing hybrid materials. 5. Copper-containing hybrid materials. 6. Olefin epoxidation. 7. Alcohol oxidation.
¿Son las matemáticas una creación humana? ¿O lo que aparece a través de ellas es el intrincado diseño del universo, que poco a poco vamos descubriendo? Desde la Antigüedad hasta el presente, científicos y filósofos se han maravillado de que una disciplina tan abstracta pudiera explicar de manera tan perfecta el mundo natural. Mario Livio explora brillantemente las ideas matemáticas desde Pitágoras hasta el siglo xxi y nos muestra cómo las más enigmáticas preguntas y las más ingeniosas respuestas nos han llevado a entender mejor el mundo que nos rodea. Este fascinante libro interesará a cualquier persona que sienta curiosidad por la mente humana y la ciencia. «Los lectores habituales de Mario Livio disfrutarán de este libro, y los recién llegados lo descubrirán», Publishers Weekly. «Una fascinante inmersión en las premisas que fundamentan las matemáticas», Booklist.
¿Cómo puede una bandada de pájaros mantener su vuelo en formación con tanta elegancia y perfecta sincronización? Muchos piensan que los pájaros que van en cabeza son los que guían y los demás les siguen. Pero en realidad una bandada de pájaros no tiene líderes ni organizadores. Se organiza y coordina sin organizador. Hay también una cantidad sorprendente de otros sistemas, desde colonias de termitas hasta atascos de tráfico o sistemas económicos, que funcionan igualmente de manera descentralizada. Tortugas, termitas y atascos de tráfico describe herramientas de computación innovadoras que pueden ayudar a adultos y niños a explorar los secretos de esta interacción descentralizada de sistemas que contienen múltiples elementos. Este entendimiento permite entrenarse para poder ir también más allá de esquemas mentales centralizados. «El libro de Mitchel Resnick es uno de los pocos en el campo de la computación con un discurso interdisciplinario que puede llegar, más allá de la comunidad técnica, a filósofos, psicólogos, así como a historiadores y sociólogos de la ciencia.» Sherry Turkle, Massachusetts Institute of Technology. «Resnick da a sus estudiantes y lectores una prueba de un nuevo y vigoroso modo de pensar, en el que el todo es mucho más que la suma de las partes.» Danny Hills, Walt Disney Imagineering.Índice1. Fundamentos: Introducción. La era de la descentralización/ 2. Construcciones: Construccionismo. LEGO/Logo. StarLogo. Objetos y paralelismo/ 3.Exploraciones: Simulaciones y estimulaciones. Acrasiomicetes. Hormigas artificiales. Atascos de tráfico. Termitas. Tortugas y ranas. Ecología de tortugas. Nueva geometría de tortugas. Incendio forestal. Árboles recursivos/ 4. Reflexiones:La concepción centralizadora. Más allá de la concepción centralizadora./ 5. Proyecciones: Crecer 
PREMI EUROPEU DE DIVULGACIÓ CIENTÍFICA ESTUDI GENERAL Els gens que mengem ens introdueix en el món de la biotecnologia d'aliments. Des de fa mil·lennis l'espècie humana ha fet ús dels éssers vivents no sols com a font d'alimentaicó sinó també com a agents modifcadors dels mateixos aliments. La biotecnologia actual empra les tècniques de l'enginyeria genètica per tal de modificar racionalment els organismes i millorar la qualitat i el rendiment dels processos. L'obra ens explica de forma senzilla les tècniques utilitzades al laboratori i presenta un complet panorama dels resultats obintuguts en el camp de les fermentacions, l'agricultura o la ramaderia. És una excel·lent mostra de com enfocar serenament i rigorosament el debat actual sobre els beneficis i riscs de les noves tecnologies.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Different titanium-containing hybrid mesoporous materials have been successfully synthesized from cyclopentadienyl or alkoxo titanium derivatives as titanium sources. The immobilization of the titanium complex has been carried out by grafting or tethering method in order to compare the catalytic performance of each process. Furthermore, two different capped agents have been used to silylate the support surface in order to increase the hydrophobic character of the final catalyst. In chapter 6 it would be evaluated if the choice of the capped agent employed has consequences in the activity of the catalyst in determined epoxidation reactions.Índice1. Introduction. 2. Characterization techniques. 3. Hybrid Materials. 4. Titanium-containing hybrid materials. 5. Copper-containing hybrid materials. 6. Olefin epoxidation. 7. Alcohol oxidation. 
¿Son las matemáticas una creación humana? ¿O lo que aparece a través de ellas es el intrincado diseño del universo, que poco a poco vamos descubriendo? Desde la Antigüedad hasta el presente, científicos y filósofos se han maravillado de que una disciplina tan abstracta pudiera explicar de manera tan perfecta el mundo natural. Mario Livio explora brillantemente las ideas matemáticas desde Pitágoras hasta el siglo xxi y nos muestra cómo las más enigmáticas preguntas y las más ingeniosas respuestas nos han llevado a entender mejor el mundo que nos rodea. Este fascinante libro interesará a cualquier persona que sienta curiosidad por la mente humana y la ciencia. «Los lectores habituales de Mario Livio disfrutarán de este libro, y los recién llegados lo descubrirán», Publishers Weekly. «Una fascinante inmersión en las premisas que fundamentan las matemáticas», Booklist.