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A Memo on the Proof-of-Stake Mechanism [article]

George Gui, Ali Hortacsu, Jose Tudon
2018 arXiv   pre-print
We analyze the economic incentives generated by the proof-of-stake mechanism discussed in the Ethereum Casper upgrade proposal. Compared with proof-of-work, proof-of-stake has a different cost structure for attackers. In Budish (2018), three equations characterize the limits of Bitcoin, which has a proof-of-work mechanism. We investigate their counterparts and evaluate the risk of double-spending attack and sabotage attack. We argue that PoS is safer than PoW agaisnt double-spending attack
more » ... se of the tractability of attackers, which implies a large "stock" cost for the attacker. Compared to a PoW system whose mining equipments are repurposable, PoS is also safer against a sabotage attack.
arXiv:1807.09626v1 fatcat:ybdllclz7vet5lqvosumgnc3ci

Pay-what-you-want because I do not know how much to charge you

José F. Tudón M.
2015 Economics Letters  
h i g h l i g h t s • The paper presents an economic rationale behind pay-what-you-want pricing. • Sellers prefer pay-what-you-want when demand uncertainty is high. • The result depends on the existence of any positive fraction of altruists. • In some cases, pay-what-you-want trumps monopoly or any other pricing mechanism. a b s t r a c t With any positive fraction of altruistic consumers in the population who give away any positive fraction of their gains from trade, there exists a high enough
more » ... level of uncertainty about demand such that the monopolist prefers pay-what-you-want over the traditional monopoly or any other pricing mechanism. Low marginal costs facilitate the adoption of pay-what-you-want. Consumer welfare always increases with pay-what-you-want.
doi:10.1016/j.econlet.2015.10.021 fatcat:zucnxdqcffhijetm54mjhdcwqu

Consumo de tabaco en la población derechohabiente del Instituto Mexicano del Seguro Social

IRMA HORTENCIA FERNÁNDEZ-GÁRATE, JORGE ESCOBEDO-DE LA PEÑA, DAVID HERNÁNDEZ-TAMAYO, HUGO TUDÓN-GARCÉS, JOSÉ DANIEL RAMÍREZ-GALINDO, MARÍA GUADALUPE BENÍTEZ-MARTÍNEZ, ANGEL ZÁRATE-AGUILAR, MARIO MADRAZO-NAVARRO
1997 Salud Pública de México  
Objective. To determine the prevalence of tobacco consumption among the active insured population of the Mexican Social Security Institute. Material and methods. A cross-sectional study in which the active insured population from the 36 political delegations was interviewed by means of a structured and self-applicable questionnaire on tobacco consumption, age of initiation, amount of cigarettes consumed and suspension. Results. The sample consisted of 45 117 subjects, of which approximately
more » ... were men and half women. Smoking prevalence in men was 40% and in women, 17.6%. Prevalence was highest in the north of the country. There is an effect of age on tobacco consumption and more than half started smoking during adolescence. Conclusions. Smoking prevalence was found to be high, however, the average number of cigarettes is low. Suspension index is low. Public health measures are necessary to diminish this addiction.
doi:10.1590/s0036-36341997000200006 fatcat:sfhzmfozr5ch7n3f7e6iiv7axy

El epistolario de Max Aub y Antonio Soriano (1959- 1971): un acercamiento a la literatura española en el exilio
Español

Mª Isabel Tudón Martínez
2013 Fòrum de Recerca  
Mª Isabel Tudón Martínez 697 MT 4 , 24-7-1965).  ...  (en sus cartas aparecen nombres de Camilo José Cela, Tuñón de Lara, J. Díaz-Canedo, Fernández Figueroa, Álvarez del Vayo, Luis Buñuel, A.  ... 
doi:10.6035/forumrecerca.2012.17.44 fatcat:4g4n3oeszzartfokxxvspiikhq

Reseñas y libros recibidos

F. Javier Sánchez-Palencia, M. Isabel Martínez Navarrete
2020 Trabajos de Prehistoria  
JSP Gornés Hachero, José Simón. La naveta de Es Tudons. Monumentos y ritos funerarios durante el Bronce Final en Menorca. Colección Sitjot 2, Consell Insular de Menorca. Menorca, 74 pp. ils. c.  ... 
doaj:0e787e5e1466467fa01021eac5fce7ec fatcat:fi6yeprgo5fyrmjeutxhtkuzra

RESEÑA de: Colón Domènech, Germà ; Fortuño Llorens, Santiago (eds.) Humor i literatura : ridentem dicere verum. Castelló de la Plana : Publicacions de la Universitat Jaume I / Fundació Germà Colón Domènech , 2011

Mª Isabel Tudón Martínez
2013 Signa Revista de la Asociación Española de Semiótica  
M.ª Isabel tudón Martínez Universitat Jaume I hUMoR I lItERAtURA.  ...  Etimología y humor es la tercera conferencia, presentada por el profesor José Ignacio Pérez Pascual, de la Universidad de la Coruña.  ... 
doi:10.5944/signa.vol22.2013.6375 fatcat:afndja6xnbgqlhfxhyb6dbe5fm

Zur Taxonomie und Chorologie des Betischen Schmetterlingshaftes Libelloides baeticus (RAMBUR, 1842) mit Beschreibung einer neuen Unterart (Neuroptera, Ascalaphidae)

Eyjolf Aistleitner
2015 Zenodo  
Abb. 4) E t y m o l o g i e : Die neue Unterart wird zu Ehren der Brüder Francisco und Jose- Luis Lencina Gutierrez benannt; beide wohnhaft in Jumilla, Provinz Murcia, die sich um die Erforschung der  ...  . , 5((, 3 && , 27.5.2015 Pto. de Tudons-N, 1000 m, 27.5.2015 Sra. de Mariola, Bañeres-SE, 880-920 m, 15., 26.+31.5.2015, 16(( 2 && ; Torremanzanas, 880 m, 12.5.2015 Torremanzanas, 880 m, 12.5. , 9(( 6  ... 
doi:10.5281/zenodo.5282238 fatcat:qubbuvd3endzndmipvhis4oege

Continuidad y cambio en las prácticas funerarias del bronce final y primera edad del hierro en Menorca

José Simón Gornés Hachero
2017 E-Spania  
GORNÉS, José Simón, J.Mª., GUAL, “El hipogeo XXI de la necrópolis de Cales Coves, Menorca”, i (...) 25 J. S.  ...  Uno de ello conservaba prendida en la trenza un pasador de madera con anillas de estaño como remate terminal. 16 José Simón GORNÉS HACHERO, Sociedad y cambio  ... 
doi:10.4000/e-spania.27157 fatcat:psdnullwqbgy7kji3ajiqvwhke

Aproximación al patrón alimentario de los inhumados en la cista de la Edad del Bronce de Ondarre (Aralar, Guipúzcoa) a través del análisis de isótopos estables de carbono y nitrógeno sobre colágeno óseo

Teresa Fernández-Crespo, Jose Antonio Mujika, Javier Ordoño
2017 Trabajos de Prehistoria  
reconstruction of the individuals interred in the Bronze Age burial cist of Ondarre (Aralar, Guipuzcoa) through carbon and nitrogen stable isotope analysis on bone collagen teresa Fernández-Crespo a , Jose  ...  Así, el análisis conjunto de los valores obtenidos en individuos de esta cronología de los contextos funerarios de Alcaïdus, Biniai Nou, Cala Morell, Càrritx, Cova Gregoria B, Es Tudons, Rafal Rubí, Ses  ... 
doi:10.3989/tp.2016.12177 fatcat:dinr5e2ae5ezxmjhvnzllnqoae

La tradición clásica en la poesía de Juan Gil-Albert escrita en el exilio. Nostalgias del Mediterráneo
Español

Mª Isabel Tudón Martínez
2013 Fòrum de Recerca  
Maria Isabel Tudón Martínez. La traducción clásica en la poesía de Juan Gil-Albert escrita en el exilio. Nostalgias del Mediterráneo G.  ...  Bibliografía En 1942 empieza una gira por diversos países sudamericanos junto a Máximo José Kahn: en Brasil conoce a Rosa Chacel, su marido el pintor Timoteo Pérez Rubio, Gabriela Mistral,.. y en 1944  ... 
doi:10.6035/forumrecerca.2013.41 fatcat:h6owk56m65gu7pnh4s75vk7siu

Bibliografía de filología hispánica

Nueva Revista De Filología Hispánica
2018 Nueva Revista de Filología Hispánica  
Tudón Martínez, María Isabel 66-2016. Tutin, Agnès 66-1774. Sobejano, Gonzalo V. núm. 2872.  ...  -Univer- sitat Jaume I-Fundació Germá Colón Domènech, Castellón de la Plana, 2016. 184 pp. || PhCa, 23 (2017), 97- 100 (Tudón Martínez). 66-2017.  ... 
doi:10.24201/nrfh.v66i2.3445 fatcat:fdcbfedc2rgfhnrf2f6wazwtle

Page 262 of World Literature Today Vol. 17, Issue 3 [page]

World Literature Today  
Univer¬ sity of Connecticut. * Jose Antonio Ramos. Teatro. La Habana. La Verdnica. 1941. 192 pages. 80c.  ...  This “es- fuerzo de un trabajador en sus ratos robados a sus horas de descanso” is not merely a picture of misery and prosd- tudon, but, according to the author, of the acdon of the bourgeoisie during  ... 

Molecular characterization and population structure of the honeybees from the balearic islands (Spain)

Pilar de la R�a, Jos� Gali�n, Jos� Serrano, R. F.A. Moritz
2001 Apidologie  
Haplotypes colonies A1 A2 M8 M6 Majorca Can Arabí 4 100 Binissalem 6 100 Ariany 4 100 Petra 6 100 Castellitx 6 100 Campos 8 100 Minorca San Climent 6 100 Alaior 6 100 Es Tudons  ...  from Minorca, Francisco Clapés and José Suñer from Ibiza and Vicente Ribas and Pascual Mayans from Formentera, that contributed to this work with their honeybees and comments.  ... 
doi:10.1051/apido:2001141 fatcat:p2bosrddxzbczgv2yx5nvjxhbu

STRATEGIC PLAN TO STRENGTHEN RESEARCH AS A MECHANISM TO INCREASE MEANINGFUL TRAINING BASED ON FORMATIVE RESEARCH

Fredy MARTINEZ
2021 Periódico Tchê Química  
This study describes the model proposed within the Electrical Technology and Engineering programs of the Universidad Distrital Francisco José de Caldas as a distinctive element of its research training  ...  Hernández, M., Vallejo, A., Tudón, J., Hernández, D., and Morales, R. (2019) . Active learning in engineering education. a review of fundamentals, best practices and experiences.  ...  Acknowledgements This work was supported by the Universidad Distrital Francisco José de Caldas, in part through CIDC, and partly by the Facultad Tecnológica.  ... 
doi:10.52571/ptq.v18.n39.2021.03_martinez_pgs_33_42.pdf fatcat:d6suf5wuhjb63l5oplb2kie2yi

Seroprevalence and Prevalence of Mycoplasma synoviae in laying hens and broiler breeders in Spain

Verónica Cortés, Sandra Sevilla-Navarro, Cristina García, Ana Tudón, Clara Marín, Pablo Catalá-Gregori
2020 Poultry Science  
We thank Joaquín Gir on (Merck Sharp & Dohme, MSD) and Jose Luis Balaguer (CEVA) for their technical and economic assistance.  ... 
doi:10.1016/j.psj.2020.11.076 pmid:33518326 pmcid:PMC7936174 fatcat:57cb73zu6zf6hjsmrhcizpxtsm
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