The objective of this work is to establish a relationship between the cutting time in rocks, determining a speed and the point load strength index test, Is, to characterize the rock in terms of resistance and avoid sending samples to laboratories. As a first stage, on andesite samples, 5 x 5 x 10 cm test tubes were made. After the elaboration they were subjected to cutting, using an electric floor cutter and the time was evaluated. This cut was made in (...) a transversal way and two parts were obtained, one of them with dimensions 5 x 5 x 5 cm, approximately. In a third stage, the point load strength test was carried out in a press built for this purpose. Finally, the cutting speeds were correlated with the point load test values and only when rock samples do not pigeonhole on the proposed relationship, send them to the laboratory. Keywords: Mining fortification, uniaxial compressive strength, rock cutting, point load strength test index. References [1]P. Feijoo, R. Aucay, D. Ordoñez, "Aplicación del esclerómetro para la determinación de resistencia a compresión de rocas", presentado en el IV Congreso Internacional de Minería y Metalúrgia, Varadero, Cuba, 2018. [2]P. Feijoo y M. Román, «Correlación entre la Deformación y la Resistencia a la Compresión de rocas», uct, vol. 23, n.º 91, p. 6, may. 2019. [3]P. Feijoo, A. Bravo, N. Escandón, "Aplicación “UDAFORMIN” para la determinación del tipo de fortificación minera", presentado en el XII Congreso Iberoamericano de Computación para el Desarrollo, San Salvador, El Salvador, 2019. [4]P. Feijoo y C. Iñiguez, «Corte en las Rocas y su Relación con la Resistencia a Comprensión Simple», RISTI, n.º E 30, p. 59-67, jun. 2020. [5]P. Feijoo y J. Padrón, «La Resistividad de Rocas y su Relación con la Resistencia a Comprensión Simple en Mina», UCT, vol. 24, n.º 99, pp. 61-67, abr. 2020. [6]M. González. El terreno. Ediciones UPC. Barcelona. España, 2001. [7]E. Besoain. Mineralogía de Suelos. Turrialba: Instituto Interamericano de Ciencias Agrícolas de la OEA, 1970. [8]P. Feijoo, A. Flores, B. Feijoo, "The Concept of the Granulometric Area and Its Relation with the Resistance to the Simple Compression of Rocks", presentado en la 7th International Engineering, Sciences and Technology Conference, Panamá, Panamá, 2019, pp. 52-56, doi: 10.1109/IESTEC46403.2019.00018. [9]F. Blyth. Geología para Ingenieros. Cecsa. México D. F. México, 2003. [10] E. Tarbuck & F. Lutgens. Ciencias de la Tierra: Una introducción a la Geología Física. Pearson. Madrid. España, 2005. [11]L. Suarez del Rio, A. Rodríguez, L. Calleja, V. Ruiz de Argandoña, «El corte de rocas ornamentales con discos diamantados: influencia de los factores propios del sistema de corte», CSIC, vol. 48, n.º 250, pp. 53-59, abr-mayjun 1998. [12]Universidad Politécnica de Madrid. Explotaciones de Roca Ornamental. Diseño de explotaciones y selección de maquinaria y equipos. UPM. Madrid. España, 2007. [13]Catalog, Covington,. LAPIDARY & GLASS MACHINERY, USA. Retrieved from https://covington-engineering.com/content/pdf/Covington-Catalog.pdf. [14]D. Burbano, T. García, «Estimación empírica de la resistencia a compresión simple a partir del ensayo de carga puntual en rocas anisótropas », FIGEMPA, vol.1, n.º 2, pp. 13-16, dic. 2016. [15]P. Ramírez, L. de la Cuadra, R. Lain, E. Grigalbo. Mecánica de rocas aplicada a la minería metálica subterránea. Instituto Geológico Minero. Madrid. España, 1984. [16]P. Cordero, "Manual de prácticas de laboratorio de Mecánica de Rocas " tesis, Universidad Nacional Autónoma de México, México D.F., México, 2019. [17]L. González de Vallejo, M. Ferrer. Manual de campo para la descripción y caracterización de macizos rocosos en afloramientos. Instituto Geológico y Minero de España. Madrid. España, 2007. [18]P. Pohjanpera, T. Wanne, E., Johansson. Point Load Test Results From Olkiluoto Area Borehole Cores. Posiva. Finlandia, 2005. [19]P. Ramírez, L. Alejano. Mecánica de rocas: fundamentos e ingeniería de taludes. Universidad Politécnica de Madrid. Madrid. España, 2004. [20]M. Navarrete, W. Martínez, E. Alonso, C. Lara, A. Bedolla, H. Chávez, D. Delgado, J. Arteaga. «Caracterización de propiedades físico-mecánicas de rocas ígneas utilizadas en obras de infraestructura», ALCONPANT, vol. 3, n.º 2, pp. 133-143, ago. 2013. [21]P. Feijoo, "Manual de mecánica de rocas y estabilidad de túneles y taludes" tesis, Universidad del Azuay, Cuenca, Ecuador, 1997. (shrink)

This work presents a proposal for the characterization of the UnconfinedCompressive Strength test, through a series of operations that can be carried outwithout inconvenience in the field. Initially, fresh rock samples are obtained from outcropsin the area and specimens of specific dimensions are made. After the test specimenelaboration phase, crushing and granulometric classification tests are carried out witha set of specimens and in parallel with a second group, UCS tests are carried out. With theresults, the rock is characterized by graphing (...) granulometric curves and in this graph theareas of fine granulometry are focused, inserting in these areas, the average value of UCS,with which it can be identified and determined when it is really necessary and It is inevitableto send rock samples to laboratories, thus saving time and money for the mining project. Keywords: compression, crushing, granulometry, rock. References [1] F. Blyth and M. de Freitas. Geología para Ingenieros. México: CEGSA, 2003. [2] F. Escolano and A. Mazariegos de la Serna. Guía de reconocimiento de rocas en Ingeniería Civil. España: Editorial Garceta, Escuela Técnica Superior de Ingeniería Civil, Universidad Politécnica de Madrid, 2014. [3] G. Stefano and J. Segovia. Notas del curso de Arte Minero I. Ecuador: Universidad del Azuay, 1991. [4] A. Maistri. Guía al Curso de Tratamiento de Minerales y a las Prácticas de Laboratorio. Ecuador: Universidad del Azuay, 1993. [5] O. Bustamante. Conminución de Minerales Trituración y Molienda. Colombia: Instituto de Minerales CIMEX, Universidad Nacional de Colombia-Sede Medellín, 2006. [6] E. Feijoo, C. Flores and B. Feijoo, "The Concept of the Granulometric Area and Its Relation with the Resistance to theSimple Compression of Rocks," 2019 7th International Engineering, Sciences and Technology Conference, Panama,Panama, 2019, pp. 52-56. [7] E. Feijoo and C. Iñiguez, “Corte en rocas y su relación con la resistencia a compresión simple”, RISTI, N.o E 30, pp. 59-67,junio 2020. [8] M. Galván. Mecánica de Rocas. Correlación entre la Resistencia a Carga Puntual y la Resistencia a Compresión Simple. Colombia: Universidad del Valle, 2015. [9] W. Marín. Evaluación de parámetros materiales de fractura en roca intacta. Colombia: Universidad Nacional de Colombiasede Medellín, 2017. [10]E. Feijoo and J. Padrón, “La resistividad de rocas y su relación con la resistencia a compresión simple en mina”, UCT, vol. 24, Núm. 99, pp. 61-67, abril 2020. (shrink)

This paper closely examines two statements proposed by Feijoo: 1. Machiavelli sets his doctrine in history, therefore his works do not constitute a really original position; 2. Feijoo writes on Machiavelli, but says he never read The Prince entirely. He only read some fundamental quotes, cited by other authors.It is clear that all his references also appear in the voice “Machiavelli” of Pierre Bayle’s Dictionnaire. Moreover, Feijoo’s interpretation is very different from Pierre Bayle’s: in the latter’s view, the work of (...) the Florentine is admirable because Machiavelli breaks with ignorance and hypocrisy revealing the truth of history. According to Feijoo, the Florentine master did not discover anything original and his works merely present the worst examples of governance practices. (shrink)

This essay analyzes how the Benedictine monk Benito Jerónimo Feijoo (1676–1764), one of the most popular Spanish natural philosophers in Europe and America, discussed amorous attraction. In an attempt to reconcile Catholic dogma with empirical knowledge, Feijoo explained the origin of love as the result of wave-like interactions between sensual stimulus, imagination, nerve fibers, and the heart. His physiological model considered men and women to be equal in their internal constituents, which had important consequences for a possible science of matching. (...) First, a possible match could only be known by a physical encounter; second, love bonds could be controlled by training the imagination; third, a harmonious society with happy marriages required accepting the intellectual equality of the sexes. The essay suggests how our knowledge about the nature of emotions influences the way we imagine an ideal society, as it is ultimately about the forces that attract and separate people, as well as the mechanisms to control them. (shrink)

J. L. Ackrill; VIII*—Aristotle's Definitions of Psuche, Proceedings of the Aristotelian Society, Volume 73, Issue 1, 1 June 1973, Pages 119–134, https://doi.org.

Misconceptions about energy conservation abound due to the gap between physics and secondary school chemistry. This paper surveys this difference and its relevance to the 1690s–2010s Leibnizian argument that mind-body interaction is impossible due to conservation laws. Justifications for energy conservation are partly empirical, such as Joule’s paddle wheel experiment, and partly theoretical, such as Lagrange’s statement in 1811 that energy is conserved if the potential energy does not depend on time. In 1918 Noether generalized results like Lagrange’s and proved (...) a converse: symmetries imply conservation laws and vice versa. Conservation holds if and only if nature is uniform. The rise of field physics during the 1860s–1920s implied that energy is located in particular places and conservation is primordially local: energy cannot disappear in Cambridge and reappear in Lincoln instantaneously or later; neither can it simply disappear in Cambridge or simply appear in Lincoln. A global conservation law can be inferred in some circumstances. Einstein’s General Relativity, which stimulated Noether’s work, is another source of difficulty for conservation laws. As is too rarely realized, the theory admits conserved quantities due to symmetries of the Lagrangian, like other theories. Indeed General Relativity has more symmetries and hence more conserved energies. An argument akin to Leibniz’s finally gets some force. While the mathematics is too advanced for secondary school, the ideas that conservation is tied to uniformities of nature and that energy is in particular places, are accessible. Improved science teaching would serve the truth and enhance the social credibility of science. (shrink)

Analogies must be symmetric. If a is like b, then b is like a. So if a has property R, and if R is within the scope of the analogy, then b (probably) has R. However, analogical arguments generally single out, or depend upon, only one of a or b to serve as the basis for the inference. In this respect, analogical arguments are directed by an asymmetry. I defend the importance of this neglected – even when explicitly mentioned – (...) feature in understanding analogical arguments. (shrink)

This volume provides discussions of both the concept of responsibility and of punishment, and of both individual and collective responsibility. It provides in-depth Socratic and Kantian bases for a new version of retributivism, and defends that version against the main criticisms that have been raised against retributivism in general. It includes chapters on criminal recidivism and capital punishment, as well as one on forgiveness, apology and punishment that is congruent with the basic precepts of the new retributivism defended therein. Finally, (...) chapters on corporate responsibility and punishment are included, with a closing chapter on holding the U.S. accountable for its most recent invasion and occupation of Iraq. The book is well-focused but also presents the widest ranging set of topics of any book of its kind as it demonstrates how the concepts of responsibility and punishment apply to some of the most important problems of our time. “This is one of the best books on punishment, and the Fourth Edition continues its tradition of excellence. The book connects punishment importantly to moral responsibility and desert, and it is comprehensive in its scope, both addressing abstract, theoretical issues and applied issues as well. The topics treated include collective responsibility, apology, forgiveness, capital punishment, and war crimes. Highly recommended.”—John Martin Fischer, Distinguished Professor of Philosophy, University of California, Riverside. (shrink)

Even the simplest known living organisms are complex chemical processing systems. But how sophisticated is the behaviour that arises from this? We present a framework in which even bacteria can be identified as capable of representing information in arbitrary signal molecules, to facilitate altering their behaviour to optimise their food supplies, for example. Known asion/Representation theory, this framework makes precise the relationship between physical systems and abstract concepts. Originally developed to answer the question of when a physical system is computing, (...) AR theory naturally extends to the realm of biological systems to bring clarity to questions of computation at the cellular level. (shrink)

In The Face of Emotions, which was Carroll Izard’s first major attempt at elaborating his differential emotions theory (DET), he stated that the book “presents a theoretical framework for the study of emotions and their role in personality and interpersonal processes.” Yet, over the years, his contribution to personality theory has generally been overshadowed by the attention focused on his views on facial expressions and the structure of emotions. This article will begin with a brief overview of the DET perspective (...) on personality development. Then, it will examine how the DET framework can be used to organize recent findings from three lines of research on adult personality. It will conclude with suggestions for future research as well as some personal recollections. (shrink)

Ethical consumerism is the thesis that we should let our values determine our consumer purchases. We should purchase items that accord with our values and refrain from buying those that do not. The end goal, for ethical consumerism, is to transform the market through consumer demand. The arm of this movement associated with food choice embraces the slogan “Vote with Your Fork!” As in the more general movement, the idea is that we should let our values dictate our choices. In (...) this paper, I offer a critique of the Vote with Your Fork campaign (hereafter VWYF) that focuses on the agency of individuals. For VWYF to be effective, minimally, individuals must act _intentionally_ when making food choices. In the ideal case, individuals adopt and endorse the values implicit in VWYF and exhibit _autonomous agency_ when they purchase and consume food. The problem, though, is that a number of things can go wrong along the way. I argue that very few of us are in the position to exhibit autonomous agency with respect to our food choices. Because of this, VWYF could very well undermine its own goals. (shrink)

Throughout the world, Eastern European critical theory is enjoying a moderate, yet exciting, resurgence. From its oppositional roots in praxis philosophy and critical sociology, this diffuse and dynamic tradition has expanded its field of concern to encompass, among other problems, the aporias of democracy, the Holocaust and legacies of totalitarianism, the vicissitudes of modern culture and the ethical imperatives of living after the grand narrative. In the process, Eastern European thought has come to figure as a vital alternative to the (...) dominant tendencies emanating from Frankfurt and Paris. This essay surveys and introduces a collection of papers delivered at The International Conference of Marxist Critical Theory in Eastern Europe held in Chengdu, P.R.C., in November 2018. It both highlights the thematic range of contemporary scholarship on Eastern European critical theory and signals potential directions in future research. (shrink)

Recent literature suggests that intellectual humility is valuable to its possessor not only morally, but also epistemically-viz., from a point of view where epistemic aims such as true belief, knowledge and understanding are what matters. Perhaps unsurprisingly, epistemologists working on intellectual humility have focused almost exclusively on its ramifications for how we go about forming, maintaining and evaluating our own beliefs, and by extension, ourselves as inquirers. Less explored by contrast is how intellectual humility might have implications for how we (...) should conduct our practice of asserting. The present entry aims to rectify this oversight by connecting these two topics in a way that sharpens how it is that intellectual humility places several distinctive kinds of demands on assertion, and more generally, on how we communicate what we believe and know. (shrink)

With an intellectual autobiography by Hans J. Morgenthau.

Research on human beings has significantly increased in ethical and scientific complexity. Ethics review is at a fork in the road. Either we significantly increase the resources we provide to support institutional research ethics committees. Or we abandon the institutional base of human research ethics review and move to model of expert suprainstitutional ethics committees.

This volume includes three previously untranslated transcripts of Kant's logic lectures.

In a recent issue of CQ, N. J. Lowe refers to the ‘slyly Catullan appeal to the language of pietas’ in [Tib.] 3.7 1–2 . In this he follows Matthew Santirocco, who comments on these lines: ‘significantly, the expression for love here is not just cura as before [sc. in 3.16 [4.10] 3], but pia cura. We recall the pietas Catullus proclaimed in his affair with Lesbia and perhaps also pius Aeneas and all that pietas meant to the Augustan age, (...) and then we realise that Sulpicia is now concerned not so much with the mere fact of Cerinthus’ affection as with its quality. (shrink)

A doctor has duties towards his patients of both confidentiality and veracity and at times these may conflict, as in the following case. A mother who has the symptoms of Huntington's chorea does not wish her daughters to know. The doctor must try to make her realise how valuable the information can be to the daughters, and thus obtain her consent to inform them. If the mother's consent cannot be obtained, then the doctor must tell the mother that he cannot (...) allow her attitude to deprive the daughters of this information, especially at this crucial time as they plan to have children. The well-being of the daughters' future families must take precedence over the mother's desire for secrecy regarding her condition. (shrink)